30 girls and boys have planned for a picnic. there is a ratio of 3 girls to 7 boys how many boys are there?

Answers

Answer 1

Answer: To solve the given problem We can consider, 30% are girls of 30 people 70% are boys in 30 people In order to get the number, we just multiply the total number of people with the percentage of the designated target populace.
1.    30 x 0.3 = 9 girls
2.    30 x 0.7 = 21 boys
3.    21 boys + 9 girls = 30 people

Hence, there are 21 boys.

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Please answer ASAP! An explanation is a MUST requirement in order to receive points and the Brainliest answer. Thank you.
What is 689 divided by 24

How to simplify 182/39

Answers

182/39
182/39 = improper fraction

182 ÷ 39 = 4.6...
39 × 4= 156
182 - 156 = 26

4 = whole number
26 = numerator
39 = denominator

4 26/39

This ^^ is how you simplify 182/39.

182/39 = 4 26/39.

182/39 in simplest form is 4 26/39

What is the unit rate in dollars per hour if u have 3.5 hours equals $10

Answers

Okay. So this is a simple division problem. All you need to do is divide 10 by 3.5. This will figure out how much you spend per single hour. you'll come up with around 2.855. So I'd round down, and say $2.85 per hour.

3.5 hours equal $10
3.5 hours= 7/2 hours

if 7/2 hours = $10
1 hour = $(10)/( (7)/(2) ) = 10*(2)/(7) = (20)/(7)$ dollars

Unit rate = $(20/7) per hour

Write an addition equation that can help you 9-6 explain your answer

Answers

6+3=9 because if you put 9-6=3 and they are fact families

What is the solution of the system of equations shown below? y = –x + 3
y = 4x – 2

A. (0, 3)
B. (1, 2)
C. (2, 1)
D. (0, −2)

Answers

Answer:

B. (1,2)

Step-by-step explanation:

y = –x + 3.......(1)

y = 4x – 2.......(2)

Putting (1) into (2)

-x + 3 = 4x - 2

4x + x = 3 + 2

5x = 5

x = 5/5

x = 1

And putting x = 1 in (1)

y = -x + 3

y = -1 + 3

y = 2

Answer:

B. (1, 2)

Step-by-step explanation:

YEP!! YOUR ANSWER IS B (1, 2)

Putting (1) into (2)

-x + 3 = 4x - 24x + x = 3 + 2

5x = 5

x = 5/5

x = 1

And putting x = 1 in (1)

y = -x + 3

y = -1 + 3

y = 2

What is 5/100 as a decimal

Answers

0.05 simple. Move the spaces to the left as the number of 0 in the decimal. Two 00 so move two space to the left.

Your answer would be 0.05, because you MUST divide 5 into 100, which gets you 0.05.
I hope I helped! :-)

A ramp leads up to a building. The top of the ramp is 5 feet above the ground, and the bottom is 15 feet from the building as shown.What is the length of the ramp? Round your answer to the nearest tenth of a foot.

A.
15.8 ft

B.
14.1 ft

C.
16.0 ft

D.
20.0 ft

Answers

To answer this you have to use Pythagoras's theorem: a^2 + b^2 = c^2

Put in the values:
5^2 + 15^2 = c^2

Simplify it:
25 + 225 = c^2

Simplify again:
250 = c^2

Square root both sides:
15.8113883008 = c

So the ramp is:
15.8113883008 feet

Now round the number:
15.8ft

The above is the answer :)
(btw sorry in advance if you've spotted a mistake)

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