The ratio of the number of boys to the number of girls in a class is 5 to 7. How many boys are there if there are 21 girls?

Answers

Answer 1
5/7 = b/21
105/7 = b
15 = b

15 boys

Related Questions

What is the slope of the line that passes through the points (2, 6) and (-1, -9).

Answers

5 is the slope ummmmm so yea

4 fl oz for $8.36 unit rate

Answers

Answer:

I'm pretty sure it's $2.09 for 1 fl oz.

What’s the answers? ,,

Answers

Positive , negative , positive, negative

−x + y = 2 2x + 4y = 32 What action was completed to create this new equivalent system of equations? −x + y = 2 x + 2y = 16

A. Divide the second equation, 2x + 4y = 32, by 2.
B. Divide the first equation, −x + y = 2, by 2.
C. Multiply the second equation, 2x + 4y = 32, by −1.
D.Multiply the first equation, −x + y = 2, by −1.

Answers

Answer:The answer is A

Step-by-step explanation:

Look at the picture I need help

Answers

Answer:its 7 because half of 14 cp=14 so pd =7

Step-by-step explanation:

What's the square root of 17 rounded to the nearest tenth

Answers

Answer:

4.0

Step-by-step explanation:

Answer:

4.1

Step-by-step explanation:

4.1231056 is [tex]\sqrt{17}[/tex]

When rounding to the nearest tenth, we get

4.1

Hope I helped,

PumpkinSpice1

A circular rug has a circumference of 314 inches. What is the approximate area? Round to the nearest whole inch. Use 3.14 for pie 

Answers

Answer:

The area is 7850 square inches

Step-by-step explanation:

Given the circumference, we want to calculate the area

mathematically, the circumference is;

C = 2 pi r

So r is C/2 pi

Area = pi * r^2

Substitute value for r from circumference;

Area = Pi * c^2/4pi^2

Area = C^2/4pi

Area = 314^2/4 * 3.14

Area = 7850 Inches square

Answer:

7,850

Step-by-step explanation:

Three more than the product of a number and 5 is equal to 6.

Answers

3/5 or .60 is the correct answer!


5x + 3 = 6

5x = 3

x = 3/5 or .60
5x + 3 = 6
5x = 3
x = 3/5

After 3 hours of of driving, Paul had gone 183 miles. What was his average rate of speed? Explain your answer.

Answers

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

[tex]s(av) = \frac{∆x}{∆t} \\ [/tex]

[tex]s(av) = average \: \: speed[/tex]

[tex]∆x = covered \: \: distance[/tex]

[tex]∆t = time \: \: of \: \: the \: \: covered \: \: distance \\ [/tex]

_________________________________

[tex]s(av) = \frac{183}{3} \\ [/tex]

[tex]s(av) = 61 \: \: \frac{mile}{hour} [/tex]

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

I am posting this so people can get points so just answer it for point idrk haha

Answers

Answer:

thank youuuu

Step-by-step explanation:

you are so nice

brainliest pls

Answer:

tyyyy

Step-by-step explanation:

The sum of four times a number and negative three is twelve. What is the number?

2 1/4
3 3/4
-2 1/4
6

Answers

The second one because, 3 3/4 x 4 equals 15 which is the sum of 3 3/4 x 4, minus 3 equals 12.

Answer:

Dgfyb

Step-by-step explanation:

On the set of axes below, triangle ABC is graphed. Triangles A'B'C'
and A"B"C", the images of triangle ABC, are graphed after a
sequence of rigid motions.

Answers

Answer:

Step-by-step explanation:

a reflection followed by a rotation

The sequence of rigid motions of the triangle is a reflection followed by a rotation, option (D) is the correct answer.

What is graph?

A graph can be defined as a pictorial representation or a diagram that represents data or values in an organized manner. Graphs are used to map out functions of two variables on a Cartesian coordinate system, which is composed of a horizontal x-axis and a vertical y-axis.

For the given situation,

The graph shows the triangle ABC plotted in the fourth quadrant.

The triangle A'B'C' are graphed in the third quadrant as its reflection.

The triangle A''B''C'' are graphed in the second quadrant by reflecting the triangle A'B'C' and then rotating it.

Hence we can conclude that the sequence of rigid motions of the triangle is a reflection followed by a rotation, option (D) is the correct answer.

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Aretha Foster, single, is marketing director for
The Canterbury Community, a senior living center. She is paid
a weekly salary of $735.00. If her weekly federal income tax
withholding is $66.84, find the number of withholding allowances
she claims if the tax is computed using the percentage method.

Answers

Answer:

11.14       brailiest please

Step-by-step explanation:

#11
write the equation of a line in point slope-form

Answers

Answer:

y - 5 = 1/4 (x+1)

Step-by-step explanation:

y - 5 = 1/4 (x - (-1))

to simplify the problem you can change (x - (-1)) to (x+1) because subtracting a negative is the same as adding a positive

y - 5 = 1/4 (x+1)

and that is your final answer if you want to keep it in point slope formula

3. Multiply and simplify: (4x + 3)(x - 1)
Answer =

Answers

4x^2-x-3 is the correct answer:)

Answer: = 4x² - x - 3

(4x+3)(x -1 ) = 4x² + 3x - 4x - 3 = 4x² - x - 3

Step-by-step explanation:

Six girls of differing heights are arranged in 2 rows of 3 each. Each girl is taller than the girl in front of her and also taller than the girl to her right. How many arrangements of the six girls are possible?

Answers

Answer:

5 possible ways

Step-by-step explanation:

Questions like this are a bit technical. Therefore, there are no perfect formula, all you have to do is picture the scene and count. Having said that. Let us use name the positions the girls are standing according to the question:

D E F

A B C

I have arranged this according to how the question has specified, meaning F is the tallest and A is the shortest if I take F to be at the back right and A to be at the front left.

In reality, A and F can never change their positions if we maintain the arrangement specified.

What we have left is to look for how to rearrange, D, E, B and C that will still make it fit the arrangement. Take note that E cannot be in front of B because she is taller than B.

Since positions for shortest and tallest are fixed, you are left with 4 people and you need two of them for the front position. This can be gotten using 4C2 = 6, but the two tall persons can't be in the front else it will disrupt the arrangement, so we have to eliminate that case which will occur once, therefore we have 5 possible ways we can make the arrangements as required.

Plz quick can some one help me with these two questions also plz show working out

Answers

22a. ¼ of salary = £3600
total salary = £3600 x 4 = £14400
total amount of salary spent
= (£14400x20%) + (2/5 x £14400) + £3600
= £2880 + £5760 + £3600
= £12240

total amount saved
= £14400 - £12240
= £2160

23a. amount anwar saves = 12%
= 0.12 of his salary
amount bethany saves = 1 - 7/8
= 1/8 = 0.125 of her salary

hence, bethany saves more money each week.

A spinner with 9 equal sections is numbered 1 through 9. The probability of spinning a 3 is
What is the probability of not spinning a 3?
Enter your answer as a fraction, in simplest form, in the box.

Answers

Answer:

8/9

Step-by-step explanation:

the probability of spinning 3 is 1/9 so just subtract with 1 or 9/9

What’s the value of c ? Just type in the answer!!!

Answers

Answer:

43

Step-by-step explanation:

Mark and his 3 friends are out at Applebee's. Their bill totaled $52.35. If they left the server a 20% tip, how much would each person pay splitting the bill evenly

Answers

27.92 each person would have to pay

Jerilyn made 40 treats for her birthday. She gave away 14 to her family before taking the rest to school. What percent did she give away to her family?

Answers

The answer is 35%

This is because Jerilyn gave away 14 of her sweets.
100/40 = 2.5
2.5 x 14 = 35%

please and thank you

Answers

Answer:

(1) x=5    (2) [tex]8\sqrt{3}[/tex]    (3) [tex]4\sqrt{3}[/tex]  (4) x=30

Step-by-step explanation:

what was the significancHeather has an international cell phone plan.


The number of texts she sent in September can be represented by x.


She pays $30 per month plus $0.05 per text.


Her bill for September was $60.

What is x, the number of texts Heather sent during the month of September?

Answers

Answer: x = 500

Step-by-step explanation:

1. You turn it into 30 + 0.05x = 60

2. Subtract 30 from both sides to get 0.05x = 30

3. Then divide 30 by 0.05 and get 600

4. Write down x = 600

Solve for AB


a: 3.6
b: 15
c: 4
d: 10

Answers

A because 9 divided by 15 equals 0.6. Then I multiply 0.6 times 6 which equals 3.6. I didn’t 9 divided by 15 because they are congruent.

Your friend claims the measure of an exterior angle will always be greater than the sum of the nonadjacent interior angles measures. Is your friend correct> Explain your reasonings. ​

Answers

Answer:

your friend is wrong

Step-by-step explanation:

There is a theorem in geometry called the Exterior Angle Theorem which was developed by Euclid (Greek mathematician that lived in Alexandria around 300 B.C.) that states that the exterior angle of a triangle will always equal the sum of the 2 nonadjacent interior angles.

If you look at the attached image, °d = °a + °c

Find the factors of function f, and use them to complete this statement.
f(x)= 2x^4 - x^3 -18x^2 + 9x

Answers

Answer:

-3, 0, 1/2, 3

The factors of function f is -3, 0, 1/2, 3

We have given that,

the factors of function f, and use them to complete this statement.

f(x)= 2x^4 - x^3 -18x^2 + 9x

What is the function?

A function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the set Y is called the codomain of the function. Functions were originally the idealization of how a varying quantity depends on another quantity.

We have to determine the factor of the given function

[tex]2x^4 - x^3 -18x^2 + 9x =0[/tex]

[tex]x(2x^3-x^2-18x+9)=0[/tex]

[tex]x=0 \ and \ 2x^3-x^2-18x+9=0[/tex]

[tex]2x^3-x^2-18x+9=0[/tex]

[tex]2x-1=0\quad \mathrm{or}\quad \:x+3=0\quad \mathrm{or}\quad \:x-3=0[/tex]

Therefore the factors  [tex]2x^3-x^2-18x+9=0[/tex] are

[tex]x=\frac{1}{2},\:x=-3,\:x=3[/tex]

-3, 0, 1/2, 3

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In a sandwich shop, 22% of the sandwiches they sell are ham. What is 22% written
as a decimal?

Answers

Answer:

0.22

Step-by-step explanation:

It is 0.22 written as a decimal instead as a percent%.

Hey again.. Please answer!!

Answers

Answer:

I can't see the question

its too small can you type it out?

Step-by-step explanation:

Answer:

32 cups and 24 cups

Step-by-step explanation:

4x + 3x = 56

7x = 56

x = 8

4(8) = 32 cups of pretzels

3(8) = 24 cups of candy corn

Two of the angles of a triangle measure 50° and 80°. Classify the triangle.
Equilateral
А
Isosceles
В
Scalene

Answers

Answer:

B) Scalene

because if in an isosceles triangle,2 angles are the same while equilateral have 3 angles the same

4. Count by 50¢. Use dollar
notation.
$0.00,
$1.00,
$1.50, $2.00,
$3.50,
$5.00,
Please help

Answers

Answer:

$0.00, $0.50, $1.00, $1.50, $2.00, $2.50, $3.00, $3.50, $4.00, $4.50, $5.00, $5.50

Step-by-step explanation:

Just add .50 (cents) on every time. When it comes to dollar notation, it should be marked with the dollar sign in front, and then the dollar amount, and then a decimal and the cent amount. The cent amount would be to the hundreths.

Answer:

Blank 1 = .50

Blank 2 = 2.50

Blank 3 = 3.00

Blank4 = 4.00

Blank 5 = 4.50

Blank 6 = 5.50

Step-by-step explanation:

Add or subtract .50

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Most cities and towns have many elected positions, from school board to city council to mayor, and any citizen over 18 years old can run. Once you're elected, you'll have the opportunity to help solve problems and make decisions to improve people's lives. Plus, you can consider running for higher offices, like state representative, governor, or even president!Of course, getting elected is usually not easy. Even local positions are highly competitive, and you'll need to be organized and hardworking to run a successful political campaign. Before you run, you should be prepared to raise money, give speeches, and have a well-thought-out plan about what you want to accomplish once elected. 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