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3 years ago

10

Please explain how you got your answer also. A class has 21 girls and 12 boys. What is the probability that a boy's name is draw

n at random?
12 over 21
21 over 12
12 over 33
21 over 33

1 answer:

Tresset [83]3 years ago

3 0

It’s the answer 12 over 33

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Try one last time

Ierofanga [76]

Answer:

$144

Step-by-step explanation:

divide 272 by 17 and then multiply that answer by 9

272/17 is 16

so 16 dollars an hour

multiply that by 9

you get 144

3 0

3 years ago

Preston is making cookies. He has fraction 4 over 5 cups of flour in a bag. He then used two fractions 1 over 10 cup scoops of f

maks197457 [2]

Step 1: 1/10 + 1/10 = 2/10

Step 2: 4/5 - 2/10
GCF: multiply both sides of 4/5 by 2 = 8/10

Step 3: 8/10 - 2-10 = 6/10

ANSWER: C <span>fraction 6 over 10, because fraction 4 over 5 minus 2 times fraction 1 over 10 equals fraction 4 over 5 minus fraction 2 over 10 </span>

8 0

3 years ago

Read 2 more answers

Franklin Construction Company build a sidewalk around two sides of a new library, as shown in the figure. what is the area of th

PtichkaEL [24]

Answer:

$630.36\ ft^2$

Step-by-step explanation:

we know that

To find out the area of the sidewalk, multiply the length by the width of the sidewalk

The width of the sidewalk is equal to

$113.4\ ft-110\ ft=3.4\ ft$

or

$75.4\ ft-72\ ft=3.4\ ft$

The area is equal to

$113.4(3.4)+72(3.4)\\385.56+244.8\\630.36\ ft^2$

4 0

3 years ago

Triangle def is similar to triangle xyz. what is the value of x?

nexus9112 [7]

Answer:

x = 48 ft

Step-by-step explanation:

Triangle DEF is similar to triangle XYZ

10 x 4 = 40 ft

so

12 x 4 = 48 ft

Answer

x = 48 ft

3 0

3 years ago

How do you complete problem number 4?

brilliants [131]

(I'm going to translate y' to dy/dx as it makes it easier to read for me, you could change it back if you wanted.)
$x \frac{dy}{dx} -y=0$
$\frac{dy}{dx} = \frac{y}{x}$
$\int \frac{1}{y} dy= \int \frac{1}{x} dx$ (separate the variables)
$\ln y=\ln x +c$
$\ln y = \ln kx$ (by letting c = ln k and using log laws)
$y=kx$ (raise everything to power e)
$3=k\times1 \implies k=3$ (applying boundary conditions)
Particular solution: $y=3x$

3 0

3 years ago