Answer:
2
Step-by-step explanation:
because there are 2 x'S
Answer:
hiiii lol. so ganfNFnnq6mq6n1j
Mr. Zhou surveyed his 25 students to find out how much time they spent doing homework each week. The results of his survey are shown in the table below. How many students spent 5–10 hours doing homework each week?
7
8
12
32
Answer: it’s 12
Step-by-step explanation:
which set dose - 4/9 belong A integers B whole numbers C natural numbers D rational numbers
Answer:
-4/9 is a rational number
Step-by-step explanation:
Rational numbers are the numbers you can make by dividing one integer by another, so in other words a fraction.
Answer
4/9 belongs to rational numbers (D).
Explanation
(Lol moderator deleted everyone's answers so I'm gonna answer).
First I'll give you a definition of each choice.
Integers: Integers don't include decimals or fractions. Integers are positive and negative numbers. So basically it's this; (..., -3, -2, -1, 0, 1, 2, 3, ...). The '...' means numbers from infinity to the next number. I hope this makes sense Imao.
Whole numbers: whole numbers are integers, except they don't include negative numbers. Whole numbers include 0 (zero)... (0, 1, 2, 3, ...)
Natural numbers: natural numbers are whole numbers but they don't include 0 (zero)... (1, 2, 3, ...)
Rational numbers: rational numbers are numbers that can be expressed as a fraction. This includes repeating decimals such as 0.333 repeating. Rational numbers also include integers, because if you put the number over one, that is a fraction. Rational numbers are basically every number except for the radicals of some numbers (such as the square root of 3) and pi.
So now let's just see which one 4/9 is.
Well, 4/9 is not an integer, whole number, or natural number because it is a fraction.
But 4/9 can be expressed as a fraction (well, it already is one) meaning it is a rational number.
You are given that cos(A)=15/17, with A in Quadrant IV, and cos(B)=4/5, with B in Quadrant IV. Find cos(A−B). Give your answer as a fraction.
Please help i need this asap.
Answer:
4/5
Step-by-step explanation:
There are four quadrants in a coordinate geometry.
The value of cos(A - B) is 84/85
The given parameters are:
[tex]\mathbf{cos(A) = \frac{15}{17}}[/tex]
[tex]\mathbf{cos(B) = \frac{4}{5}}[/tex]
Using trigonometry ratio, we have:
[tex]\mathbf{sin^2(A) + cos^2(A)= 1}[/tex]
Substitute [tex]\mathbf{cos(A) = \frac{15}{17}}[/tex]
[tex]\mathbf{sin^2(A) + (\frac {15}{17})^2 =1}[/tex]
Expand
[tex]\mathbf{sin^2(A) + \frac{225}{289} =1}[/tex]
Collect like terms
[tex]\mathbf{sin^2(A) =1 - \frac{225}{289}}[/tex]
Evaluate fraction
[tex]\mathbf{sin^2(A) =\frac{64}{289}}[/tex]
Take square roots of both sides
[tex]\mathbf{sin(A) =\pm\frac{8}{17}}[/tex]
The angle is in the fourth quadrant.
So, we have:
[tex]\mathbf{sin(A) =-\frac{8}{17}}[/tex]
Also,
Substitute [tex]\mathbf{cos(B) = \frac{4}{5}}[/tex] in [tex]\mathbf{sin^2(B) + cos^2(B)= 1}[/tex]
[tex]\mathbf{sin^2(B) + (\frac 45)^2= 1}[/tex]
[tex]\mathbf{sin^2(B) + \frac{16}{25}= 1}[/tex]
Collect like terms
[tex]\mathbf{sin^2(B) = 1 - \frac{16}{25}}[/tex]
Simplify fraction
[tex]\mathbf{sin^2(B) = \frac{9}{25}}[/tex]
Take square roots
[tex]\mathbf{sin(B) = \pm \frac{3}{5}}[/tex]
The angle is also in fourth quadrant
So, we have:
[tex]\mathbf{sin(B) = - \frac{3}{5}}[/tex]
To calculate cos(A - B), we make use of:
[tex]\mathbf{cos(A - B) = cos(A)cos(B) + sin(A)sin(B)}[/tex]
So, we have:
[tex]\mathbf{cos(A - B) = \frac{15}{17} \times \frac{4}{5} + \frac{-8}{17} \times \frac{-3}{5}}[/tex]
Evaluate
[tex]\mathbf{cos(A - B) = \frac{60}{85} + \frac{24}{85}}[/tex]
Take LCM
[tex]\mathbf{cos(A - B) = \frac{60+24}{85}}[/tex]
[tex]\mathbf{cos(A - B) = \frac{84}{85}}[/tex]
Hence, the value of cos(A - B) is 84/85
Read more about quadrants at:
https://brainly.com/question/7196054
4+4(4-9x9)
What is the answer to this question?
Answer:
=-616
Step-by-step explanation:
8(4-9x9)
bidmas
8(4-81)
8(-77)
Answer:
-616 is the answer for the question
What is the discriminant
of the equation
3x2-7x+6=0
Help guys :(
The scale on a map reads 1 cm = 250 km. How far is the actual distance if the map distance measures 3.8 cm?
Answer:
950 km
Step-by-step explanation:
1 cm = 250 km
3.8 * 250 = 950
Answer:
950 km
Step-by-step explanation:
[tex]\frac{1}{250} = \frac{3.8}{x}[/tex]
(cross multiply)
250(3.8)= 950
(divide both sides by 1)
950/1=950
ILL GIVE BRAINLY THING
9514 1404 393
Answer:
d. The data is continuous because it is connected, without gaps.
Step-by-step explanation:
If you can draw the graph without lifting your pencil, then the data is continuous. That is the case here. The best description is the last one:
The data is continuous because it is connected, without gaps.
any nepali here...............who play freefire
Answer:
I am nepali but i donot play freefire
a 10ounce containerof milk contains 200 calorieshow many calories does each ounce of milk contain.
Answer:
Each ounce contains 20 calories.
Step-by-step explanation:
200/10 = 20/1
20/1 simplified is 20.
Answer:
20 calories per ounce
Step-by-step explanation:
if 200 calories is in 10 ounces of milk, then you can divide 200 by 10; 200 ÷10=20 calories per ounce
the ratio of dogs to cats at the pet shop is 1 : 2 there are 15 dogs how many cats are there
Answer:
30
Step-by-step explanation:
1:2 = 1 (x2)
15 x 2
30
helpp idk what the heck im supposed to do so if anyone can help thank you <3 :)
Hope this helps you!
Solve the Inequality for x
4x − 5 ≥ 7
Move all terms not containing x to the right side of the inequality.
4x ≥ 12
Divide each term by 4 and simplify.
x ≥ 3
The result can be shown in multiple forms.
Inequality Form:
x ≥ 3
Interval Notation:
[3,∞)
Lots of love for you darling!~ <3
You graph it here
Answer:
Step-by-step explanation:
Alright, so this is basically just another equation, but then you see the greater than or equal to sign. How do I solve this? You may be asking. Well, treat it like an equation and worry about the sign later.
4x - 5 [tex]\geq[/tex] 7
Solve for x.
Add 5 to each side, then divide by 4 to each side.
4x [tex]\geq[/tex] 12
x [tex]\geq[/tex] 3 <----This is the answer.
Now for the graph. Look at the picture below:
That's what the graph should look like. Since it has a greater than or equal to sign, the line will be solid.
The graph is basically saying that anything that is greater than 3 (including 3) is counted, which is why that entire right side of 3 is shaded in.
Also, the way you should technically graph it is on a number line. So make a number line.
-2 -1 0 1 2 3 4 5 6 7 8 9 10
<-----|-----|-----|-----|-----|-----€-----|-----|-----|-----|-----|-----|-----|----->
(Pretend € is the filled in dot).
So, the above number line is what it should look like when graphed. The € circle is filled in because we are including the 3.
#teamtrees #WAP (Water And Plant)
What is the value of x?
x+13=9
Enter your answer in the box in simplest form
plz i will give 15
Answer:
x = -4
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASEquality PropertiesStep-by-step explanation:
Step 1: Define equation
x + 13 = 9
Step 2: Solve for x
Subtract 13 on both sides: x = -4Step 3: Check
Plug in x into the original equation to verify it's a solution.
Substitute in x: -4 + 13 = 9Add: 9 = 9Here we see that 9 does indeed equal 9.
∴ x = -4 is a solution of the equation.
Answer:
x=-4
Step-by-step explanation:
So when solving a one-step algebraic equation you need to remember what you do to one side you have to do to the other side. In the problem x + 13 = 9 you need to subtract 13 from both sides to isolate x. So your problem should look like x = 9 - 13. Now all you have to do is solve 9 - 13 which is -4. So x = -4.
I hope this helped.
Solve for X please :)
Answer:
x = 10
Step-by-step explanation:
Assuming the 2 figures are similar, then the ratios of corresponding sides are equal, that is
[tex]\frac{5}{x}[/tex] = [tex]\frac{4}{8}[/tex] ( cross- multiply )
4x = 40 ( divide both sides by 4 )
x = 10
PLEASE HELP!! In a radio station contest, the first prize is $2,000 and the second prize is $500. The probability of winning the first prize is 0.005 and the probability of winning the second prize is 0.008. The station runs this contest many, many times to increase its listening audience. What is the expected payout for each time the station offers the opportunity to win the prizes?
A. $2,300
B. $500
C. $100
D. $14
E. $10
Answer:
THe awnswer is B
Step-by-step explanation:
Answer: D. $14
Step-by-step explanation: I got this right on Edmentum
Identify the slope of the line for the equation y= 1/6x + 1/4
Answer:
1/6x or just 1/6
Step-by-step explanation:
the equation is y = mx + b and 1/6x is in place m which is the slope
stream blueberry eyes by MAX AND SUGA periodTt
The slope is also known as the gradient and the rate of change of the line. The slope of the line for the equation y= 1/6x + 1/4 is 1/6
Slope of a lineThe slope is also known as the gradient and the rate of change of the line, The equation of aline in slope intercept form is expressed as:
y = mx + b
where
m is the slope
b is the y-intercept
Given the equation y = 1/6x + 1/4
Compare
mx = 1/6x
m = 1/6
Hence the slope of the line for the equation y= 1/6x + 1/4 is 1/6
Learn more on slope here: https://brainly.com/question/3493733
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in order to lure new customers to a credit card
Answer:
Tell them you don't take cash
Which equation is equivalent to
1
4
+x=-- ? Select all that apply.
4
6
x=
4
6
=
5
c-
11
2
x
Alw
Answer:
is that 14 or 1/4?
Step-by-step explanation:
Water flows through a pipe at a rate of 8600 cubic meters per hour. Express this rate of flow in quarts per second. Round your answer to the nearest whole number.
Answer:
R = 2524 quarts/s
Step-by-step explanation:
Water flows through a pipe at a rate of 8600 cubic meters per hour.
We know that,
1 m³ = 1056.69 quarts
1 hour = 3600 s
Rate of flow of water = 8600 cubic meters per hour
[tex]R=8600\ \dfrac{m^3}{h}\\\\=8600\times \dfrac{1056.69\ \text{quarts}}{3600\ s}\\\\=2524.311\ \text{quarts/s}[/tex]
or
R = 2524 quarts/s
So, the rate of flow of water is 2524 quarts/s.
Half of a number x is equal to 9 less than 2 times that same number. What is the
number
Answer:
[tex]x = 6[/tex]
Step-by-step explanation:
Analyzing the statement one after the other:
Half a number x: [tex]\frac{1}{2}x[/tex]
Equals to: [tex]=[/tex]
9 less than twice that same number: [tex]2x - 9[/tex]
Bring them together, we have:
[tex]\frac{1}{2}x = 2x-9[/tex]
Collect Like Terms
[tex]\frac{1}{2}x - 2x= -9[/tex]
[tex]\frac{x}{2} - 2x= -9[/tex]
[tex]\frac{x - 4x}{2} = -9[/tex]
[tex]\frac{ - 3x}{2} = -9[/tex]
Multiply through by 2
[tex]2 * \frac{ - 3x}{2} = -9 * 2[/tex]
[tex]- 3x = -18[/tex]
Divide through by -3
[tex]x = 6[/tex]
If x and y are both integers, which expression(s) are equivalent to ||x – y||?
A) ||y – x||
B)
||y + x||
C)
||y|| – ||x|| if x≤y and x≥0
D)
||x|| – ||y|| if y>x
E)
||y|| + ||x|| if y>x
If x and y are both integers, then the expression equivalent to ll x - y ll is,
ll y -x ll.
Here,
Given expression is, ll x - y ll
What is modulus function?
The modulus function gives the magnitude or absolute value of a number irrespective of the number being positive or negative.
Now,
Let x = 2 and y = 1
Hence, ll x - y ll = ll 2 - 1 ll = 1
And, ll y - x ll = ll 1 - 2 ll = 1
So, Option A is true.
Hence, If x and y are both integers, then the expression equivalent to llx - y ll is, ll y -x ll.
Learn more about the modulus function visit:
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A movie theater sells adult tickets for $4 and children tickets for $2. At a certain movie, there were 90 people in attendance and a total of $260 in sales. How many adults and children were at the movie?
What percent of 400 is 77
7 is % of 400
The levine family gas 10 gallons of gas in the car. The car uses 1 5/8 of a gallon each hour. How long can they drive on 10 gallons of gas?.
Answer:
6 hours
Step-by-step explanation:
6 * 1 5/8
6* 13/8=9.75
Answer:
6 hours
Step-by-step explanation:
Kelly's Cafe has regular coffee and decaffeinated coffee. This morning, the cafe served 20 coffees in all, 30% of which were regular. How many regular coffees did the cafe serve?
Answer:
the cafe served 6 regular coffees
Step-by-step explanation:
to get your answer you can multiply the percentage times the amount served in total
Total regular coffees served = 6.
What is percentage?A percentage is a number or ratio that can be expressed as a fraction of 100. If we have to calculate percent of a number, divide the number by the whole and multiply by 100. Hence, the percentage means, a part per hundred. The word per cent means per 100. It is represented by the symbol “%”.
Given,
Total coffees served = 20
No. of regular coffees = 30% of 20
= 30/100 × 20
No. of regular coffees = 6
Hence, Kelly's café served 6 regular coffees.
Learn more about percentage here:
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Henry wants to join a book of the month club. The first club costs $30 to join and $10 per
book. The second club costs $15 per book and has no fee to join. How many books
would need to be purchased from each club for the clubs to cost to same?
Answer:
25
Step-by-step explanation:
Factorise fully 2x^2-8x
Answer:
2x(x-4)
Step-by-step explanation:
2[tex]x^{2}[/tex]-8x= 2([tex]x^{2}[/tex]-4x)= 2x(x-4)
Answer:
[tex]\mathrm{Factor}\:2x^2-8x:\:2x\left(x-4\right)[/tex]
Step-by-step explanation:
Given the expression
[tex]2x^2-8x[/tex]
[tex]\mathrm{Apply\:exponent\:rule}:\quad \:a^{b+c}=a^ba^c[/tex]
[tex]x^2=xx[/tex]
so the expression becomes
[tex]2x^2-8x=2xx-8x[/tex]
[tex]=2xx-2\cdot \:4x[/tex]
[tex]=2x\left(x-4\right)[/tex] ∵ [tex]\mathrm{Factor\:out\:common\:term\:}2x[/tex]
Therefore,
[tex]\mathrm{Factor}\:2x^2-8x:\:2x\left(x-4\right)[/tex]
i will give Brainliest
can you please put the answers by the questions?
thx
(i you see 69 for points skskskskskks)
Answer:
idkkk im trying to figure it out as quick as i cannn
Step-by-step explanation:
The shortest distance from a line to the center of a circle of a radius 4 units is 12 units. The circle is reflected across the line. What is the radius of the resulting image?
Answer: The radius will still be 4 units.
Step-by-step explanation:
Since it is a rigid transformation, nothing of the shape will change excepts it location meaning that the radius of the shape will still stay the same.
The radius is 4 and after a reflection , the radius will still be 4.
SERIOUS NEED OF HELP!!!! *giving brainliest*
70 concert tickets were sold for $550. Each adult ticket cost $9 and each children’s ticket cost $5. How many adults tickets were sold? (Write only the number for the answer.)
Answer:
Total tickets = 70
Total cost = $550
Adult's ticket = $9
Child's ticket = $5
Difference = 9 - 5 = $4
Assume all 70 are child's tickets
5 x 70 = 350
But the total cost was 550
550 - 350 = $200
The $200 must have come from Adult's tickets, which has a difference of $4.
200 ÷ 4 = 50
So there are 50 adult's tickets.
70 - 50 = 20
And there are 20 child's tickets.
If you run 100 meters in 10 seconds, what is your average speed
Answer:
Yeah it's 10
Step-by-step explanation:
100/10=10
