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gladu [14]
2 years ago
11

There are 9 girls and 11 boys in a class, and two students will be chosen one after another. Find the probability that both are

boys.
Mathematics
1 answer:
ddd [48]2 years ago
3 0

Answer:

11/20

Step-by-step explanation:

total=20

11=boys

9=girls

p(b)=11/20

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What is the scale factor on a graph
Dimas [21]

Answer: The scale factor of a dilation is the factor by which each linear measure of the figure (for example, a side length) is multiplied.

Step-by-step explanation:

A dilation can be described in coordinate notation as (x,y)→(2x,2y)

4 0
2 years ago
Andrew has one book that is 237 inches thick and a second book that is 3.56 inches thick. If he stacks the books, about how tall
sattari [20]
You just add the thickness of the 2 books which is 237+3.56=240.56
Then you round the hundredth place which is 5 and next to it is the number 6 and that’s 5+ so it’s going up by a number. The answer is 240.6 inches tall. I tried explaining it well so sorry if you didn’t understand.
3 0
3 years ago
What are similarities between rigid and nonrigid transformations?
Dimas [21]

Answer:

here are four main types of transformations: translation, rotation, reflection and dilation. These transformations fall into two categories: rigid transformations that do not change the shape or size of the preimage and non-rigid transformations that change the size but not the shape of the preimage

Step-by-step explanation:

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7 0
3 years ago
Mary buys a reel of thread for sewing. There are 10 m of thread on the real. She uses 210 cm. How much is left on the reel in ce
babunello [35]

Answer:

the length of the thread remaining is 790 cm

Step-by-step explanation:

Given;

original length of the thread, L₀ = 10 m = 1000 cm

the length of the thread used, L₁ = 210 cm

The length of the thread remaining is calculated as follows;

ΔL = L₀ - L₁

ΔL = 1000 cm - 210 cm

ΔL = 790 cm

Therefore, the length of the thread remaining is 790 cm

5 0
2 years ago
If 3m+2n=16 and m−2n=0, then what is the value of m?
umka21 [38]

Answer:

m= 4

Step-by-step explanation:

3m +2n= 16 -----(1)

m -2n= 0 -----(2)

From (2):

m= 2n -----(3) (+2n on both sides)

subst. (3) into (1):

3(2n) +2n= 16

6n +2n= 16

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n= 16 ÷8

n= 2

subst. n=2 into (3):

m= 2(2)

m= 4

7 0
3 years ago
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