Ask question

Ask question

All categories

Liono4ka [1.6K]

1 year ago

13

Three-fourths of people at the concert are children. If there are 87 children, what is the total number of people at the concert

?

1 answer:

dusya [7]1 year ago

5 0

Answer:

65

Step-by-step explanation:

87 times .75 is 65.25 but since a quarter if a persone does not make sense in this context we round down to the nearest whole number

You might be interested in

A. ASA Postulate <br> B. HL Theorem <br> C.AAS Theorem<br> D. SAS Postulate

TiliK225 [7]

Answer:

your answer will be <em><u>B. HL Theorem </u></em>

Step-by-step explanation:

hope it helps you...

4 0

2 years ago

What is the measure of angle A in the triangle?<br> Enter your answer in the box.<br> mZA=

stepladder [879]

Answer:

50

Step-by-step explanation:

The sum of the angles of a triangle add to 180 degrees

A + B + C = 180

2x-10 + 70+ x+30 = 180

Combine like terms

3x +90 = 180

Subtract 90 from each side

3x+90-90=180-90

3x= 90

Divide by 3

3x/3= 90/3

x=30

We want to find angle A

A = 2x-10

=2*30 -10

=60-10

50

6 0

3 years ago

Read 2 more answers

Use the Counting Principle to find the probability. Choosing the 7 winning lottery numbers when the numbers are chosen at random

frozen [14]

Answer: 120

<u>Step-by-step explanation:</u>

Since the order of the numbers doesn't matter we can use the formula:

$\dfrac{n!}{r!(n-r)!}\quad \text{where n is the quantity of items and r is the quantity chosen}\\\\\text{In this problem, there are 10 numbers (n = 10) and 7 to be chosen (r = 7)}\\\\_{10}C_{7}=\dfrac{10!}{7!(10-7)!}\\\\.\qquad=\dfrac{10!}{7!3!}\\\\.\qquad=\dfrac{10\times 9\times 8\times 7!}{7!\times 3\times 2\times 1}\\\\.\qquad=10\times 3\times 4\\\\.\qquad=120$

7 0

2 years ago

Read 2 more answers

What’s the area of this figure?

Ivan

Answer:

C. 155.5 cm2

Step-by-step explanation:

area = 5*15 + (15+8)*7/2 = 75 + 80.5 = 155.5 cm2

3 0

3 years ago

Find the surface area of the cylinder. Round to the nearest whole number.

natulia [17]

Answer:

I think it is 730

Step-by-step explanation:

I hope this helped o(〃＾▽＾〃)o

4 0

2 years ago

Read 2 more answers