Ask question

Ask question

All categories

xxTIMURxx [149]

3 years ago

13

The radio of boys to girls is 3:4. There were 60 girls at the dance. How many boys were at the dance?

2 answers:

IRINA_888 [86]3 years ago

5 0

Answer: There are 45 boys

Step-by-step explanation:

3:4

60÷4=15

15×3

=45

bagirrra123 [75]3 years ago

3 0

<h2><u>Answer:</u></h2><h2>a. Use a proportion comparing boys to girls at the dance. boys/girls=3/4=x/60</h2><h2>Solve the proportion by cross-multiplying, setting the cross-products equal to each other, and solving as shown below.</h2><h2>(3)(60) = 4x</h2><h2>180 = 4x</h2><h2>180/4=4x/4</h2><h2>45=x</h2><h2>There were 45 boys at the dance.</h2><h2><u></u></h2><h2><u>Thank you </u></h2><h2><u>sunshinemadison101</u></h2>

You might be interested in

PLEASE HELP due soon!I forgot how to do it omg

Flura [38]

Answer:

(3, -3) is correct

Step-by-step explanation:

-4 × 3 = -12. -12 + 9 = -3

8 0

2 years ago

Please and thank you help with math!!

Anvisha [2.4K]

Answer:none of these

Step-by-step explanation:

5 0

2 years ago

A concert ticket that originally cost $46.50 is on sale for $38.75. What is the percent of decrease, rounded to the nearest tent

Arturiano [62]

You subtract 38.75 from 46.5, which is 7.75. 7.75/46.5=about .16666, or 16.7 percent.

5 0

2 years ago

A segment with endpoints (3,7) and (-8,7) is rotated around the origin. how long will the new segment be ?

amid [387]

11 units long. When something is rotated it does not change its shape/length, only when it is dilated.

4 0

2 years ago

Read 2 more answers

number of bacteria in a certain population Increases according to a continuous exponential growth model with How many hours does

vladimir1956 [14]

Answer:

It takes 1.77 hours for the population to double.

Step-by-step explanation:

Equation for population growth:

The equation for population growth, after t hours, with a growth rate parameter of r, as a decimal, is given by:

$P(t) = P(0)(1+r)^t$

Growth rato parameter of 48% per hour

This means that $r = 0.48$ . So

$P(t) = P(0)(1+r)^t$

$P(t) = P(0)(1+0.48)^t$

$P(t) = P(0)(1.48)^t$

How many hours does it take the size of the sample to double?

This is t for which P(t) = 2P(0). So

$P(t) = P(0)(1.48)^t$

$2P(0) = P(0)(1.48)^t$

$(1.48)^t = 2$

$\log{(1.48)^t} = \log{2}$

$t\log{1.48} = \log{2}$

$t = \frac{\log{2}}{\log{1.48}}$

$t = 1.77$

It takes 1.77 hours for the population to double.

3 0

2 years ago