the ratio of boys to girls at the movie is 4:7. If there are 21 girls, how many boys are at the movie?

Answers

Answer 1

Answer: $boys:girls=4:7\n\ngirls=21\n\ntherefore\n\nboys:21=4:7\n\n(boys)/(21)=(4)/(7)\ \ \ \ \ |cross\ myltiply\n\n7\ boys=4*21\n\n7boys=84\ \ \ \ \ |divide\ both\ sides\ by\ 7\n\nboys=84:7\n\n\boxed{boys=12}$

Answer 2

Answer: $7x=21\nx=3\n\n4x=4\cdot3=\boxed{12}$

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Explain the full answer

Answers

rememer you can do anything to an equaiton as long as you do it to both sides

and the erased answer is correct

10=-6.5+n
add 6.5 both sides
10+6.5=6.5-6.5+n
16.5=0+n
16.5=n

Which expression is equvilent to -3 (-6b +5)

Answers

18b-15
-3x-6b=18b
-3x5=-15

hope this helps, if it doesn't don't hesitate to tell me :)

-3 (5+6b, that might work

Find the unknown demension. round to the nearest whole number. v=210cubic cm 5cm by 14cm by h

Answers

5 * 14 * x = 210
70 * x = 210
x= 3
the unknown dimension is 3 cm

What times what times what equals 66

Answers

The answer is 11 x 6=66
That 11, 6, and 1 are some of the factors of 66.
So we use 11 and 6 and we get 66.
This is only the easiest factors we can multiply.
There are many more factors that you can multiply together and get 66.

The combinations of three numbers that multiply to give 66 are (1, 2, 33), (1, 3, 22), (1, 6, 11), and (2, 3, 11). that is 1 × 2 × 33 = 66, 1 × 3 × 22 = 66, 1 × 6 × 11 = 66, 2 × 3 × 11 = 66.

What is multiplication

Multiplication is an arithmetic operation that combines two or more numbers to find their product. When you multiply two numbers, you are essentially adding one number repeatedly to itself a certain number of times.

For example, if you multiply 3 by 4, it means adding 3 to itself four times:

3 × 4 = 3 + 3 + 3 + 3

= 12

In multiplication, the numbers being multiplied are called the multiplicand and the multiplier. The result of the multiplication is called the product.

5 × 6 = 5 + 5 + 5 + 5 + 5 + 5 = 30

2 × 9 = 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 = 18

7 × 3 = 7 + 7 + 7 = 21

Multiplication can be performed with any real numbers, including whole numbers, fractions, decimals, and even negative numbers. The basic principles and properties of multiplication remain the same regardless of the numbers being multiplied.

Learn more on multiplication here brainly.com/question/10873737

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Combine the like terms to create an equivalent expression.
7n+4n

Answers

Answer:

11n

Step-by-step explanation:

(7+4) = 11

Answer:

11n

Step-by-step explanation:

Combine Like Terms

(7n) + (4n) are like terms

Add Them together

7+4=11

Therefore

when like terms are combined, the expression can be solved to 11n.

Solve.4x + 2 ≥ –6

A.
x ≥ –1

B.
x ≤ –1

C.
x ≤ –2

D.
x ≥ –2

Answers

it's c bruh ok good bye

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