Answer:
Step-by-step explanation:
Are the outcomes on the two cards independent? Why?
Yes. The events can occur together. No. The probability of drawing a specific second card depends on the identity of the first card. No. The events cannot occur together. Yes. The probability of drawing a specific second card is the same regardless of the identity of the first drawn card.
Math in My World
Example 1
Blair is arranging 18 cupcakes on a shelf. Find the
factors of 18. Use arrays to find the factors.
Answer:
445455
Step-by-step explanation:
the volume of a cube with edge lengths of 2/3 units
What is the edge length of a cube with volume 27/64 cubic units?
Pleas helppppppppppppp
Answer:
[tex]a=\sqrt[3]{\frac{27}{64}} = 0.75[/tex]
edge length = 0.75
Equation: [tex]a=\sqrt[3]{V}[/tex]
Help me pls Ahhhh
Help me brainles
Answer:
0.94, 1.03, 1.09, 1.1
Step-by-step explanation:
1.1
1.03
0.94
1.09
Those are the numbers in decimal form in sequence.
So it would be 0.94, 1.03, 1.09, then 1.1
I can't help on the graphing part, but thats the best you can pretty much get. Hope it helps :)
Does anybody know this? I followed the example and did the formula and it told me it was 11.99 but it was wrong. Find the length of the radius if the area of the sector is 361.6 and the central angle is 288 use 3.15 round your answer to the neatest whole number
Hi Student!
The first step that we need to take to solving this problem (and almost any problem), is to concentrate the important information for the problem that is provided. Looking at the problem we can see that we are trying to determine what the length of the radius is. In order to solve this problem we are provided with the area of a sector of 361.6 meters squared and a central angle of 288 degrees.
Now that we have the important information taken care of, we can move onto the part of actually solving the problem. We must first convert our degrees to radians because the equation that we will be using can only use radians for the angle and not degrees. We can simply convert our angle to radians by multiplying it by π/180.
[tex]288\ degrees\ *\ \frac{\pi }{180\ degrees}[/tex]
[tex]288\ degrees\ *\ \frac{3.14}{180\ degrees}[/tex]
[tex]\frac{288\ degrees\ *\ 3.14}{180\ degrees}[/tex]
[tex]5.024\ radians[/tex]
After completing this step, we have converted our degrees to radians and now we can move onto the step where we plug in our information into an equation and solve for our unknown.
[tex]Sector\ Area = radius^2\ *\ \frac{angle}{2}[/tex]
[tex]361.6\ m^2 = radius^2\ *\ \frac{5.024}{2}[/tex]
[tex]361.6\ m^2 = radius^2\ *\ 2.512[/tex]
[tex]\frac{361.6\ m^2}{2.512} = \frac{radius^2\ *\ 2.512}{2.512}[/tex]
[tex]143.949\ m^2 = radius^2[/tex]
[tex]\sqrt{143.949\ m^2} = \sqrt{radius^2}[/tex]
[tex]12\ m = radius[/tex]
Therefore, after solving our equation for our unknown, we can see that our radius is really close to 12 meters (so we can just round up as the problem stated).
please help please :)
Answer:
Amber these are tricky
Step-by-step explanation:
plug in 0 for x to see where it intercepts, also, b/c the line goes up hill, it's a positive slope. :)
So B) is good
HELP Sam measures the height of 7 different scoops of ice cream. The mean of the heights was 3.8 cm. Which of the following best describes the mean?
Answer:
B
Step-by-step explanation:
mean=(a+b+c+d+e+f+g)/7
Sam measures the height of 7 different scoops of ice cream. The mean height was 3.8 cm. If all the scoops are evenly distributed, they would all be 3.8 cm tall.
How to find the mean value of a data set?The mean value of the data set is the ratio of the sum of the data set's values to the number of values it has.
If the data set consists of values
x_1, x_2, ..., x_n
, then we get the mean value as:
[tex]\overline{x} = \dfrac{x_1 + x_2 + \cdots + x_n}{n}[/tex]
Sam measures the height of 7 different scoops of ice cream. The mean height was 3.8 cm.
[tex]\overline{x} = \dfrac{x_1 + x_2 + \cdots + x_n}{n}[/tex]
mean=[tex]\dfrac{(a+b+c+d+e+f+g)}{7}[/tex]
Therefore, If all the scoops are evenly distributed, they would all be 3.8 cm tall.
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radius of a semi circle
please help me Find the slope
Answer:
-1/2
Step-by-step explanation:
let's look at the change from the red point to the blue point
thus, (x₁, y₁) = red point = (-4, 1) and (x₂, y₂) = blue point = (-2, 0)
note that (x₁, y₁) and (x₂, y₂) can be interchanged
slope = change in y / change in x = (y₂-y₁)/(x₂-x₁) = (0-1) / (-2-(-4)) = -1/2 as our slope
The graphs of two linear equations are shown.
(the picture)
What is the best estimate of the solution to the system of equations?
(0,4)
( 0 , 4 )
(4,0)
( 4 , 0 )
(−1,8)
( − 1 , 8 )
(8,−1)
( 8 , − 1 )
Answer:
(0,4)
(8,-1)
Because the graph is low and high or concave up and concave downWhich is the equivalent of TAN 0?
Answer:
Option A.
Step-by-step explanation:
The tangent(theta) is equal to the ratio of the length opposite to the length of the adjacent side, which in this case would be the secant and cosecant.
I need help with these soon for the marking period
Answer:
1) x = 62.2
2) x = 35.9
3) x = 61.9
4) x = 53.1
Please help!!!!!!
What is the geometric possibility of being in the square and not in the circle? The radius of the circle is five inches. Express percent’s to the nearest tenth.
A. 21.5%
B. 23.0%
C. 20.0%
Answer:
A
Step-by-step explanation:
square: 10² = 100
Circle: π*5² = 3.14*25 = 78.5
In the squqre not in the circle: 100-78.5 = 21.5
HELPPPPP QUICKLYYY !!! The picture shows a cylinder of height x which has been inscribed in a sphere of radius r. Find the volume of a cylinder in terms of x.
See attached. We can draw a right triangles contained within both shapes.
The triangle has height x (same as the cylinder), base 2r (same as the diameter of the cylinder), and hypotenuse 6 (same as the diameter of the sphere).
Since it's a right triangle, the Pythagorean theorem holds and we have
x² + (2r)² = 6²
which we solve for r to get
x² + 4r² = 36
4r² = 36 - x²
r² = 9 - x²/4
r = √(9 - x²/4)
Then the volume of the cylinder, whose height is x and whose base has radius r, is
π r² x = π (9 - x²/4) x = (36x - x³) π/4
The square root of 83
Answer:
The answer would be 9.1104335791443.
If an item has a retail price = $475 and a discount of $45, what percentage discount is offered?
Answer:
A 9.47% discount was given
Step-by-step explanation:
The question is asking us to find how much percent of 475 is 45. Therefore we do the following:
[tex] \frac{45}{475} \times \frac{100}{1} = \frac{4500}{475} [/tex]
after dividing we get 9.473 which is approximately 9.47%
To check if what we got is correct we do the opposite and instead find 9.47% of 475.
[tex] \frac{475}{1} \times \frac{9.47}{100} = \frac{4498.25}{100} [/tex]
After dividing we find that is equal to 44.98 which is approximately 45.
One week, Alonso earned $204.40 at his job when he worked for 14 hours. If he is paid the same hourly wage, how many hours would he have to work the next week to earn $554.80
Answer:
About 30-34 hours i estamate
Step-by-step explanation:
Alonso should work for 38 hours to earn $554.80.
What is arithmetic?In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication, and division,
Here,
Alonso earned $204.40 at his job when he worked for 14 hours.
Let Alonso per hour be x,
x = 204.40 / 14
x = 14.6
Now,
Alonso works for hours to earn $554.80,
= total pay/pay of an hour
= $554.80 / 14.6
= 38
Alonso should work for 38 hours to earn $554.80.
Thus, Alonso should work for 38 hours to earn $554.80.
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shows a reading which is 8% higher than the actual pressure.
what is the actual pressure when it shows up as £39.42
The actual pressure before the percentage increase is 36.5
How to calculate the Actual pressure?New pressure = £39.42Percentage increase = 8%let
x = actual pressure39.42 = x + (8% of x)
39.42 = x + (0.08x)
39.42 = 1.08x
x = 39.42 ÷ 1.08
x = 36.5
Therefore, the actual pressure before the percentage increase is 36.5
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Nyla compared 790 and 709.her work is shown at the right. Is Nyla comparison correct ? If not, correct her mistake
Answer:
its correct so you don't need to do anything
Step-by-step explanation:
The solution is, result of subtraction = 81.
What is Subtraction?Subtraction is the process of taking away a number from another. It is a primary arithmetic operation that is denoted by a subtraction symbol (-) and is the method of calculating the difference between two numbers.
here, we have,
given that,
Nyla compared 790 and 709.
so, we have,
790 - 709
=81
Hence, The solution is, result of subtraction = 81.
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helpppppppp asappppppppppp pleaseeee
Length of sides:
A = 4 ftB = 8 ftC = 6 ftD = 10 ftSurface Area:
(perimeter of base)(length) + (base)(height)
(8+10+6)(4)+(8)(6)
(24)(4)+48
96+48
144 ft²
1. (a) Solve the differential equation (x + 1)Dy/dx= xy, = given that y = 2 when x = 0. (b) Find the area between the two curves y = x2 and y = 2x – x2.
(a) The differential equation is separable, so we separate the variables and integrate:
[tex](x+1)\dfrac{dy}{dx} = xy \implies \dfrac{dy}y = \dfrac x{x+1} \, dx = \left(1-\dfrac1{x+1}\right) \, dx[/tex]
[tex]\displaystyle \frac{dy}y = \int \left(1-\frac1{x+1}\right) \, dx[/tex]
[tex]\ln|y| = x - \ln|x+1| + C[/tex]
When x = 0, we have y = 2, so we solve for the constant C :
[tex]\ln|2| = 0 - \ln|0 + 1| + C \implies C = \ln(2)[/tex]
Then the particular solution to the DE is
[tex]\ln|y| = x - \ln|x+1| + \ln(2)[/tex]
We can go on to solve explicitly for y in terms of x :
[tex]e^{\ln|y|} = e^{x - \ln|x+1| + \ln(2)} \implies \boxed{y = \dfrac{2e^x}{x+1}}[/tex]
(b) The curves y = x² and y = 2x - x² intersect for
[tex]x^2 = 2x - x^2 \implies 2x^2 - 2x = 2x (x - 1) = 0 \implies x = 0 \text{ or } x = 1[/tex]
and the bounded region is the set
[tex]\left\{(x,y) ~:~ 0 \le x \le 1 \text{ and } x^2 \le y \le 2x - x^2\right\}[/tex]
The area of this region is
[tex]\displaystyle \int_0^1 ((2x-x^2)-x^2) \, dx = 2 \int_0^1 (x-x^2) \, dx = 2 \left(\frac{x^2}2 - \frac{x^3}3\right)\bigg|_0^1 = 2\left(\frac12 - \frac13\right) = \boxed{\frac13}[/tex]
PLEASE HELP ASAP!!!!
Step-by-step explanation:
[tex] - \csc { }^{2} (9) + \cot {}^{2} (9) [/tex]
[tex] - \frac{1}{ \sin {}^{2} (9) } + \frac{ \cos {}^{2} (9) }{ \sin {}^{2} (9) } [/tex]
[tex] - ( \frac{1}{ \sin {}^{2} (9) } - \frac{ \cos {}^{2} (9) }{ \sin {}^{2} (9) } )[/tex]
[tex] - ( \frac{ \sin {}^{2} (9) }{ \sin {}^{2} (9) } )[/tex]
[tex] - (1)[/tex]
[tex] - 1[/tex]
The answer is -1
Consider z1 = 4 – 4 startroot 3 endrooti and z2 = –16i. What is z1 – z2? 4 – 12startroot 3 endroot i 4 12startroot 3 endroot i 4 – 4( startroot 3 endroot – 4)i 4 4 (startroot 3 endroot – 4)i
The answer is: [tex]z_1-z_2[/tex]= 4-4([tex]\sqrt{3i}[/tex]-4i)
The correct option is: (D)
What are Complex numbers?A complex number is the sum of a real number and an imaginary number. A complex number is of the form a + ib and is usually represented by z. Here both a and b are real numbers. The value 'a' is called the real part which is denoted by Re(z), and 'b' is called the imaginary part Im(z).
Since we have given : [tex]z_1[/tex]==4-4[tex]\sqrt{3i}[/tex] and [tex]z_2[/tex]= -16i
The difference of z1 - z2 would be:
So,
[tex]z_1-z_2[/tex] = 4-4[tex]\sqrt{3i}[/tex] - (-16i)
[tex]z_1-z_2[/tex] =4-4[tex]\sqrt{3i}[/tex]+16i
[tex]z_1-z_2[/tex] =4-4([tex]\sqrt{3i}[/tex] -4i)
Hence, [tex]z_1-z_2[/tex]= 4-4([tex]\sqrt{3i}[/tex]-4i)
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Answer:
4 – 4( StartRoot 3 EndRoot – 4)i
it's C.
Step-by-step explanation:
took the L for yall bc my shtoopid ahh thought it was D, which is 4 + 4
f(x)=4x-1. g(x)=-2|x+3|. what is the y value when f(x)=g(x)
..............................................................
The work of a student to find the dimensions of a rectangle of area 8 + 16x and width 4 is shown below:
Step 1: 8 + 16x
Step 2: 4(4) + 4(12x)
Step 3: 4(4 + 12x)
Step 4: Dimensions of the rectangle are 4 and 4 + 12x
In which step did the student first make an error, and what is the correct step?
Answer:
Step 1: 8 + 16x Step 2: 4(4) + 4(12x) Step 3: 4(4 + 12x) Step 4: Dimensions of the rectangle are 4 and 4 + 12x In which step did the student first make an error and what is the correct step? Step 3; 4 + (4 + 12x) Step 3; 4 + (4 ⋅ 12x) Step 2; 4(2) + 4(4x) Step 2; 4(2) + 4x(2)
Jennifer has a job that pays her $5200 per month. She also has to pay
12% per month in Federal Taxes and 3.5 % per month in State Taxes. If
these are her only deductions, then what is her net pay for the year?
O A. $4,394
B. $26,364
C. $52,728
D. $63,872
Answer:
4394
5200 X 0.12 = 624 --> 5200 - 624 = 4576
5200 X 0.035 = 182
4576 - 182 = 4394
Betty’s Bite-Size Candies are packaged in bags. The number of candies per bag is normally distributed, with a mean of 50 candies and a standard deviation of 3. At a quality control checkpoint, a sample of bags is checked, and 12 bags contain fewer than 47 candies. How many bags were probably taken as samples?
A. 15 bags
B. 75 bags
C. 36 bags
D. 24 bags
SOMEONE HELP QUICK!!
Answer:
24
Step-by-step explanation:
47= Mean
4 bags represent 16% of samples
16%=4
100= x
X=100 x4/16
100x4=400
400/16= 25
Since the answer ask for a probablity the answer is 24.
I need help with all of these questions you see on the top. there the red squares. please someone smart. this is one of the problems I need to finish this tonight.
Answer:
49°
Step-by-step explanation:
The marked angles are "vertical" angles. They have the same measure.
∠TGF = ∠HGM = 49°
_____
You don't need to know the value of p to answer this question. It is 7.
Answer:
∠TGF = 49°
Step-by-step explanation:
From the diagram, we get that ∠TGF is equal to ∠MGH because they are vertical angles.
Hence,
⇒ ∠TGF = ∠MGH
⇒ ∠TGF = 49°
A middle school took all of its 6th grade students on a field trip to see a symphony at a theater that has 3080 seats. The students filled 1078 of the seats in the theater. What percentage of the seats in the theater were filled by the 6th graders on the trip?
Answe
about 30-45 Percent.
Step-by-step explanation:
can someone help me with my math?
Answer:
Trinity, find the answers below
Step-by-step explanation:
for the 1st picture, minor angels ∠1, ∠2, ∠3 are all the same as the shown angle of 130°
for the 2nd picture, minor angles ∠2, ∠3 are the same as the shown angle of 80° and ∠1 is the adjacent angle to 80°, so it's 100° , because 180° - 80° = 100°
jake has an account that is compounded every month at a rate of 3.5%.if he invests $20,000,what will the balance be after 5 years