The equivalent expression of the given expression 50 - 10 - 15 will be 50 + (- 10) + (- 15). Then the correct option is C.
What is an equivalent expression?The equivalent is the expressions that are in different forms but are equal to the same value.
The expression is given below.
→ 50 - 10 - 15
Then the expression can be written as
→ 50 + (- 10) + (- 15)
Thus, the correct option is C.
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Let O be an angle in quadrant IV such that sec =
17/8
Find the exact values of cot and sin.
How many different 6-digit numbers have a sum of their digits equal to 2?
pls help
If you're talking about 6-digit numbers in base 10 (so there digits are one of the numbers 0-9), such a number can be made up of either
• two 1s and four 0s, or
• one 2 and five 0s
and the leading digit must be non-zero.
If such a number starts with 1, then there are 5 slots which can contain the other 1. So there are 5 numbers in this group.
If such a number starts with 2, the rest are 0s. So there is 1 number in this group.
Then there are only 6 numbers with 6 digits whose digital sum is 2.
110000
101000
100100
100010
100001
200000
If 3n + 2 = 8, find the value of n.
Answer:
2
Step-by-step explanation:
3n+2=8
Collect like terms
3n=8-2
3n=6
Divide both sides by 3
3n÷3=6÷3
n=2
pls help. due at 11:59
Answer:
see the attachment!
i hope this can help you.
Mariana buys a $10 pair of flip flops that is 15% off. How much change will Mariana receive when she buy=
them with a $20 bill.
Answer:
$11.50
Step-by-step explanation:
15% of 10 is 1.5
10-1.5=8.5
20-8.5=11.5
How many possible phone numbers can we make out of XXX – XXXX, where X can be any number 0-9? Show your work and leave your answer in either exponential or factorial form.
There are 10⁷ possible phone numbers from the digit 0 to 9.
What is Permutations?Permutations are different ways of arranging objects in a definite order. It can also be expressed as the rearrangement of items in a linear order of an already ordered set.
Here, there are total 10 possible digits (0 to 9) we can use to create 7 digit phone numbers.
For first place there are 10 possible digits.
similarly for second place again 10 possibilities and so on.
So total number of phone number = 10 X 10 X 10 X 10 X 10 X 10 X 10
= 10⁷
Thus, there are 10⁷ possible phone numbers from the digit 0 to 9.
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Possible phone numbers can be 10 x 9 x 8 x 7 x 6 x 5 x 4 (without repetition) = 10!/3!.
10 10 10 - 10 10 10 10= [tex]10^{7} =1,00,00,000[/tex]. (with repetition)
What is number system?A numeral system is a writing system for expressing numbers; that is, a mathematical notation for representing numbers of a given set, using digits or other symbols in a consistent manner.
There are 7 digit phone number represented with a XXX-XXXX .
So the first x can be 10 different numbers
let us take
10 ___ ___ ____ ____ ____ ____, but which ever number you use, it is then used up.
So then you only have 9 numbers left
10 x 9 x ___ x ___ x ___ x ___ x ___ .
Then, once that number is used it can't be used again, so on
10 x 9 x 8 x 7 x 6 x 5 x 4 (without repetition) = 10!/3!
If the repetition takes place then,
the first place have possibilities of 10 digits
10 __ __ - __ __ ___ __
Now, again repetition is allowed again there are possibilities of 10 digits.
10 10 __- __ __ __ __
and carrying the same way,
10 10 10 - 10 10 10 10= [tex]10^{7} =1,00,00,000[/tex].
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What is the center of a circle with equation (x-4)2 + y2 = 5?
Answer:
(4,0)
Step-by-step explanation:
standard equation for a circle is (x−h)^2 +(y−k)^2 =r^2
circle center: h, k with radius: r
(x-(+4)^2 + (y-0)^2 = 5
the center is (4, 0)
A box of of trading cards has 24-packs of cards in it. Only two of those packs contain limited edition cards.
A: What is the probability that a collector will find both limited edition cards if he buys only 2 packs?
B: What is the probability that he gets at least one limited edition card if he buys 3 packs?
The probability that the collector gets at least one limited edition card if he buys 3 packs is 0.23.
What is Binomial distribution?A common discrete distribution is used in statistics, as opposed to a continuous distribution is called a Binomial distribution. It is given by the formula,
[tex]P(x) = ^nC_x p^xq^{(n-x)}[/tex]
Where,
x is the number of successes needed,
n is the number of trials or sample size,
p is the probability of a single success, and
q is the probability of a single failure.
Given that a box of trading cards contains 24-packs of cards in it. And Only two of those packs contain limited edition cards. Therefore, the probability of finding a limited edition card will be,
[tex]P = \dfrac2{24} = \dfrac{1}{12}[/tex]
The probability of not getting a limited edition card will be,
[tex]q = \dfrac{24-2}{24} = \dfrac{22}{24} = \dfrac{11}{12}[/tex]
Now, using the binomial distribution, the probability can be found.
A.) The probability that a collector will find both limited edition cards if he buys only 2 packs is
[tex]P(x) = ^nC_x p^xq^{(n-x)}\\\\P(x=2) = ^2C_2 \cdot(\dfrac1{12})^2 \cdot (\dfrac{11}{12})^{(0)}\\\\P(x = 2) = 0.0069 \approx 0.007[/tex]
B.) The probability that he gets at least one limited edition card if he buys 3 packs can be written as,
The probability of at least a limited edition card
= 1 - Probability of not getting any limited edition card
The probability of getting no special edition card will be,
[tex]P(x) = ^nC_x p^xq^{(n-x)}\\\\P(x=0) = ^3C_0 \cdot(\dfrac1{12})^0 \cdot (\dfrac{11}{12})^{(3)}\\\\P(x = 0) = 0.77[/tex]
Now,
The probability of at least a limited edition card
= 1 - Probability of not getting any limited edition card
The probability of at least a limited edition card = 1 - P(x=0) = 1-0.77 = 0.23
Hence, the probability that the collector gets at least one limited edition card if he buys 3 packs is 0.23.
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Work out length of AB
[tex] \huge \tt \color{pink}{A}\color{blue}{n}\color{red}{s}\color{green}{w}\color{grey}{e}\color{purple}{r }[/tex]
[tex] \large\underline{ \boxed{ \sf{✰\:Note }}}[/tex]
★ 1st let's know what is the given figure is and it's related concepts for solving !
➣ Given Triangle is a right angled triangle
➣ It is having 3sides let's know what are the name of these sides
➣ 1st AB is know as hypotenuse
➣ 2nd AC and is called Base of the triangle
➣ 3rd BC whích is know as perpendicular of the triangle
➣ Hypotenuse(H):-The side of a right triangle opposite the right angle.
➣ Perpendicular(P):- Exactly upright; extending in a straight line.
➣ Base(B):- it also known as the side opposite to hypotenuse
➣Perpendicular and base are know as the leg of right angled triangle
➣ We can easily find length of one missing side by using a theorem name as "Pythagorean theorem"
➣ Pythagorean theorem :- A mathematical theorem which states that the square of the length of the hypotenuse of a right triangle is equal to the sum of the squares of those of the two other sides
★ Note :- The Pythagorean theorem only applies to right triangles.
[tex] \rule{70mm}{2.9pt}[/tex]
★ Writing this theorem mathematically ★
[tex] { \boxed{✫\underline{ \boxed{ \sf{Pythagorean \: theorem \: ⇒ {Hypotenuse }^2={ Base }^2+ {Height }^2}}}✫}}[/tex]
★ Here ★
➣ Base (AC)= 22cm
➣ Perpendicular (height) (BC)= 8cm
[tex] \rule{70mm}{2.9pt}[/tex]
✝ Assumption ✝
➣ let Hypotenuse ( AB ) = "x"
[tex] \boxed{ \rm{ \pink ➛AB^2= AC^2+BC^2}}[/tex]
[tex] \rule{70mm}{2.9pt}[/tex]
✝ let's substitute values ✝
[tex]\rm{ \pink ➛x^2=22 ^2+8^2} \\ \rm{ \pink ➛x^2 = 484+ {64} } \\ \rm{ \pink ➛ {x}^{2} = 548 } \\ \rm{ \pink ➛= {x} = \sqrt{548} } \\ \rm{ \pink ➛ x = 2\sqrt{137} \: or23.4} \\ [/tex]
[tex] \rule{70mm}{2.9pt}[/tex]
Hence Hypotenuse (AB) in the given triangle is of
[tex] { \boxed{✛\underline{ \boxed{ \sf{2\sqrt{137} \: or23.4\green✓}}}✛}}[/tex]
[tex] \rule{70mm}{2.9pt}[/tex]
Hope it helps !
How is the graph of the parent quadratic function transformed to produce the graph of y=-(2x+6)²+3?
O The graph is compressed horizontally by a factor of 2, shifted left 3 units, reflected over the x-axis, and translated up
3 units.
O The graph is reflected over the x-axis, compressed horizontally by a factor of 2, shifted left 6 units, and translated up
3 units.
The graph is stretched horizontally by a factor of 2, reflected over the x-axis, shifted left 3 units, and translated up 3
units.
The graph is reflected over the x axis, stretched horizontally by a factor of 2, shifted left 6 units, and translated up 3
units.
Answer:
the final option
Step-by-step explanation:
the negative sign causes a reflection, the +6 in the parentheses cases a 6 unit shift left and the +3 causes a 3 unit shift up
F the positive z-axis points upward, an equation for a horizontal plane through the point (0,−2,−3) is
The equation for a horizontal plane through the point (0,−2,−3) is z= -3.
What is a system of equations?A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.
Let's assume n is the normal vector for the horizontal plane < 0, 0, 1 > .
The co-ordinate of the point is (0,−2,−3)
The general equation of a plane is -
[tex]n < x-x_0 , y - y_0, z-z_0 > =0\\\\ < 0,0,1 > \\\\0(x)+0(y+2) +1(z+3)\\\\z = -3[/tex]
Thus, The equation for a horizontal plane through the point (0,−2,−3) is z= -3.
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The square root of 8+3 times the square root of 2 + the square root of 32
Answer:
[tex]9 \sqrt{2} [/tex]
Step-by-step explanation:
[tex] \sqrt{8} + 3 \sqrt{2} + \sqrt{32} \\ \\ = \sqrt{ {2}^{2} \times 2} + 3 \sqrt{2} + \sqrt{ {2}^{4} \times 2 } \\ \\ = 2 \sqrt{2} + 3 \sqrt{2} + {2}^{2} \sqrt{2} \\ \\ = 2 \sqrt{2} + 3 \sqrt{2} + 4 \sqrt{2} \\ \\ = 9 \sqrt{2} [/tex]
Jesse and Mark are jogging along the route shown at a rate of 12 miles per hour. They start by jogging south along Capitol Street for 1 mile, then turn east on H Street and jog for 1.75 miles. At that point, Jesse is tired and decides to walk home along Florida Avenue at a rate of 5 miles per hour. Mark plans to jog back the way they came. Jesse wants to find out who will arrive home first and by how much time. Which statements should he consider when solving the problem? Check all that apply.
A triangle. The sides are Capitol Street, H Street, and they hypotenuse is Florida Avenue.
Jesse will walk home a distance of approximately 2.0 miles as found by evaluating 1 squared + 1.75 squared = d squared and then 1 + 3.0625 = d squared.
Jesse will take about 0.4 hours to walk the rest of the way home as found by 2.0 = 5 (t).
Jesse will walk home a distance of approximately 2.25 miles as found by 1 squared + 1.75 squared = d squared and then 2 + 3.0625 = d squared.
Mark will jog home a distance of 2.75 miles.
It will take Mark about 0.23 hours to jog home as found by 2.75 = 12 (t).
Mark will jog home a distance of 2.25 miles.
Mark will get home about 0.17 hours (or 10 minutes) sooner.
Mark will get home about 0.21 hours (or 12.5 minutes) sooner.
Jesse take 0.4 hours while Mark take 0.23 hours to reach back to home. The statements which should Jesse consider when solving this situation is statement 2.
What is Pythagoras theorem?Pythagoras theorem says that in a right angle triangle, the square of the hypotenuse side is equal to the sum of the square of the other two legs of the right angle triangle.
Jesse and Mark are jogging along the route shown at a rate of 12 miles per hour.
They start by jogging south along Capitol Street for 1 mile, then turn east on H Street and jog for 1.75 miles. At that point, Jesse is tired and decides to walk home along Florida Avenue at a rate of 5 miles per hour.Here, Thus, Florida Avenue is hypotenuse triangular path and the other two sides are Capitol Street and H Street. The distance of Florida Avenue is,
[tex]1^2+1.75^2=d^2\\1+3.0625=d^2\\4.0625=d^2\\d=\sqrt{4.0625}\\d=2.0156[/tex]
Thus, Jesse walks 2.0156 with 5 miles per hour. Thus, the time taken by him is
[tex]t_J=\dfrac{2.0}{5}\\t_j=0.4\rm\;hr[/tex]
Mark plans to jog back the way they came which is 2.75 miles (1+1.75) long with speed of 12 miles per hour. Thus, the time taken by him is
[tex]t_M=\dfrac{2.75}{12}\\t_M=0.23\rm\;hr[/tex]
Thus, Jesse take 0.4 hours while Mark take 0.23 hours to reach back to home. The statements which should Jesse consider when solving this situation is statement 2.
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How can l use models to find part of a number?
Answer:
In math, number blocks are commonly used as models, where a small square equals 1, a long rectangle equals 10, and a large square equals 100. As models, blocks can be used for addition, subtraction, multiplication, and division. You can represent a problem given by using the correct models.
Ximena gave out a survey to some students in her school about their favorite color. students could choose between red and blue. 180 of those surveyed said their favorite color was red. 55% of the students surveyed said their favorite color was blue. how many students were surveyed in total?
Answer:
Step-by-step explanation:
what we know is that 45% of the total was 180 (they voted red)
55% of the total voted blue.
To find the total, we need to set up a cross-multiplication equation
180/45 = ?/100
180 times 100 is 18000
18000/45 = 400
400 students were surveyed in total
we can check this by getting 55% of this, and adding it to 180.
If it equals to 400, then we're right.
55% of 400 = 220
220 + 180 = 400
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The perimeter, p, of a square is a function of its side length, s. The perimeter of the square is 28 inches or less. What is the domain of the function for this situation
The domain of the function for this situation is; s<= 7.
What is the domain of the function?It follows from the task content that the perimeter , p, of a square is a function of its side length, s. The perimeter of the square is 28 inches or less.
On this note it follows that;
P = 4s <= 28
Hence, it follows that; s<=7.
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Which picture shows a distance of 1/3 from Point A to Point B?
The correct answer is Choice A
Alright this time can somebody help?
I'm pretty sure the answer is 232cm
11x8=88
88÷2=44
44x4=176
8x7= 56
176+56=232
Correct me if I'm wrong :)
Answer:
Surface area =
160 sq cm
Step-by-step explanation:
To find surface area, you find the area of all the faces and add them together. There are 4 faces (flat surfaces) The base is a triangle and the 3 sides are also triangles. The area of a triangle is:
A = 1/2 b•h
For the base,
A = 1/2•8•7
A = 28 sq cm
For the sides, we can do one calculation and times by 3 because they are all the same.
A = 1/2•8•11
= 44 sq cm
One face is 44, 3×44 is 132 for all three faces.
Surface area =
28 + 132
= 160 sq cm
The volumes of two similar figures are given. The surface area of the smaller figure is given. find the surface area of the larger figure
V=2875 m^3
V = 1472 m^3
S.A. = 928 m^2
The surface area of the larger figure is [blank] m^2
Step-by-step explanation:
the surface area of a figure is always the result of a combination of multiplication(s) of 2 dimensions (side lengths).
and the volume of 3 dimensions (side lengths).
"similar figures" means that they share the same angles. and that there is one scaling factor that applies to all sides (and all other lines like heights).
so, no matter what sides are used to calculate the surface areas and the volumes, it is the same scaling factor used for each of them.
in a multiplication of 2 sides (for the area) the scaling factor is therefore applied twice and hence squared, in a multiplication of 3 sides it is applied 3 times and therefore cubed.
let's call the scaling factor f.
1472 × f³ = 2875
and then
928 × f² = large S.A.
let's use the first to get f :
1472 × f³ = 2875
f³ = 2875 / 1472 = (125 × 23) / (64 × 23) = 125/64
f = 5/4
f² = (5/4)² = 5²/4² = 25/16
large S.A. = 928 × 25/16 = 58 × 25 = 1450 m²
A school buys pens and pencils from a supplier. The supplier charges $0.05 for each pencil and $0.25 for each pen. The school pays $400 for the pens and pencils.
If the school bought 1,500 pencils, how many pens did the school buy?
please help
Answer:
1300 pens
Explanation:
Set up equations where p is pencil, q is pens
Equation's:
1st equation: 0.05p + 0.25q = 400
2nd equation: p = 1500
Insert equation 2 into 1:
0.05(1500) + 0.25q = 400
75 + 0.25q = 400
0.25q = 325
q = 325/0.25
q = 1300
what is the average of 8 and 9
Answer:
The correct answer should be 8.5 (I think) : )
a professor teaches four different science classes. he wants to try out a new style of exam, so during finals, he gives the new exam to 15
randomly selected students in each class. the other students take the regular exam.
what is the sample in this situation?
The sample in this situation where professor wants to try out a new style of exam, thus, during finals, is 15.
What is random sample?Random sample is the way to choose a number or sample in such a manner that each of the sample of the group has an equal probability to be chosen.
Sample is the particular group which is gathered from a data. A professor teaches four types of science classes. Professor wants to try out a new style of exam, thus, during finals,
The gives the new exam to 15 randomly selected students in each class and remaining other students take the regular exam. Thus, the sample is 15.
Hence, the sample in this situation where professor wants to try out a new style of exam, thus, during finals, is 15.
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Which is the equation of the line passing through (0, 4) and (8, 0)?
A. Y= - 1/2+ 8
B. Y= - 1/2+4
C. Y= -2x+4
D. Y= -2x+8
Answer:
B: y = -(1/2)x + 4
Step-by-step explanation:
I'll assume the x term is missing from options A and B:
IThey should read:
A. Y= - (1/2)x+ 8
B. Y= - (1/2)x+4
Use the two given points to calculate the slope of the line of the form y=mx+b, where m is the slope and b is the y-intercept (the value of y when x = 0).
(0,4) and (8,0)
Rise = (0 - 4) = -4
Run = (8 - 0) = 8
Slope, m, = -4/8 or -(1/2)
The perpendicular line has the form y = -(1/2)x + b. There are options that have a -(1/2) slope: A and B.
To narrow it down, we need to calculate a value of b.
Use y = -(1/2)x + b and solve for b using either of the two given points [(0,4) or (8,0)]. I'll use (0,4).
y = -(1/2)x + b
4 = -(1/2)(0) + b
b = 4
The equation is thus y = -(1/2)x + 4, option B
SOMEBODY HELP! Math extra credi middle school
Step-by-step explanation:
5
A, d and e are the answer, multiplication/division never changes
6. yes, perpendicular lines are inside of each other always. how ever not all intersecting lines are perpendicular, for they're not 90° degrees.
3. ? (sorry)
4. ??
2. ?
Not sure if I did this right Can someone help? Find the value of x.
Answer:
6
Step-by-step explanation:
Given :
⇒ The triangles are similar
⇒ The sides are in proportion
===============================================================
Solving :
⇒ [tex]\frac{6}{15+6} = \frac{8}{3x+10}[/tex]
⇒ [tex]\frac{6}{21}= \frac{8}{3x+10}[/tex]
⇒ [tex]\frac{2}{7} = \frac{8}{3x+10}[/tex]
⇒ [tex]\frac{1}{7}=\frac{4}{3x+10}[/tex]
⇒ 1(3x + 10) = 7(4)
⇒ 3x + 10 = 28
⇒ 3x = 18
⇒ x = 6
=============================================================
Solution :
The value of x is 6
Lines m and n are parallel on a coordinate plane. Lines m and n are transformed by the same rotation, resulting in image lines s and t. Which statement describes the relationship between lines s and t?
The statement that best describes the relationship between lines s and t is: Lines s and t are parallel.
What are parallel lines?Parallel lines are as those lines that does not intersect one another despite being equal to each other.
Lines s and t are said to be parallel lines because they are cut by transversal which in turn means that transversal intersect lines s and t to make it parallel lines.
Therefore the statement that best describes the relationship is :Lines s and t are parallel.
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Find the values of x and y in parallelogram PQRS. PTy, TR 4x1, QT 2y, TS 5x+8
Answer:
Step-by-step explanation:
Which equals 4 quarts?
6 cups
16 pints
16 cups
O
12 pints
Answer:
16 cups
Step-by-step explanation:
1 quart = 4 cups
A town has a population of 2.33 x 104 and grows at a rate of 7% every year. Which a equation represents the town's population after 6 years?
Answer:
[tex]p = (2.33 \times {10}^{4})( {1.07}^{6} )[/tex]
Ingrid and Reed want to choose a tool that will allow them to measure the volume of a box. Which tool is most useful for Ingrid and Reed to measure the volume of a box?
