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2 years ago

In a classroom, the probability that the teacher will chose a boy from 20 students is 0.45. How many students are not boys?

Mathematics

1 answer:

padilas [110]2 years ago

5 0

The answer is 9 boys!! hope this helps

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(-5, 10) (-5, 9) What is the slope?

Sveta_85 [38]

Answer:

The slope is undefined.

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(9-10)/(-5-(-5))

m=-1/(-5+5)

m=-1/0

undefined

Since the slope is undefined, this is a vertical line.

5 0

1 year ago

Read 2 more answers

IF A = [5, 6, 7] and B = [7, 8, 9] then A ∪ B is equal to

Zielflug [23.3K]

Answer:

=[5,6,7,8,9]

Step-by-step explanation:

a=(5,6,7)

B=(7,8,9)

AUB=(5,6,7)U(7,8,9)

=[5,6,7,8,9]

4 0

2 years ago

Read 2 more answers

I’m not sure how to do this please help

Nikolay [14]

Answer:

B :step 2 she didnt collect all the like terms and calculate

Step-by-step explanation:

first rewrite remove all ( )Parentheses

2nd collect all like terms and calculate

a^4 + 7a -16 -12^a^3 + 5a -3

a^4 + 12a - 19 - 12a^3 ( Like terms are 7a +5a and -16 +-3)

so she skipped the second step

3 0

2 years ago

Compare the exponential functions f, g, and h which are shown below.

Nostrana [21]

Hello,
Please, see the detailed answer in the attached files.
Thanks.

5 0

2 years ago

How do you solve 10+5(3x-4)=2x+7

Taya2010 [7]

Answer:

$x=1\dfrac{4}{13}$

Step-by-step explanation:

Given the equation

$10+5(3x-4)=2x+7$

Use distributive property:

$10+5\cdot 3x-5\cdot 4=2x+7\\ \\10+15x-20=2x+7$

Use commutative property to rewrite the equation:

$15x+10-20=2x+7$

$15x-10=2x+7$

Add 10 th both sides:

$15x-10+10=2x+7+10\\ \\15x=2x+17$

Subtract $2x:$

$15x-2x=2x+17-2x\\ \\13x=17$

Divide by 13:

$x=\dfrac{17}{13}=1\dfrac{4}{13}$

4 0

3 years ago