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irina1246 [14]
2 years ago
13

What is 63% of 400 people

Mathematics
1 answer:
Stells [14]2 years ago
6 0
63% of 400 people is 252 people. 
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The solution set of 4x-(x+7)=2(x+3)​
maria [59]

Step-by-step explanation:

<h3><u>To</u><u> </u><u>Solve</u><u>:</u><u>-</u></h3>

\\ \tt{:}\leadsto 4x-(x+7)=2(x+3)

<h3><u>SOL</u><u>UTION</u><u>:</u><u>-</u></h3>

\\ \tt{:}\leadsto 4x-(x+7)=2(x+3)

\\ \tt{:}\leadsto 4x-x-7=2x+6

\\ \tt{:}\leadsto 3x-7=2x+6

\\ \tt{:}\leadsto 3x-2x=6+7

\\ \tt{:}\leadsto x=13

7 0
2 years ago
Evaluate the function f (x)= x squared -4x+1 at the given values of the independent variable and simplify.
Ivan
<h3>Given</h3>

... f(x) = x² -4x +1

<h3>Find</h3>

... a) f(-8)

... b) f(x+9)

... c) f(-x)

<h3>Solution</h3>

In each case, put the function argument where x is, then simplify.

a) f(-8) = (-8)² -4(-8) +1 = 64 +32 + 1 = 97

b) f(x+9) = (x+9)² -4(x+9) +1

... = x² +18x +81 -4x -36 +1

... f(x+9) = x² +14x +46

c) f(-x) = (-x)² -4(-x) +1

... f(-x) = x² +4x +1

8 0
3 years ago
Solve for x. You must write your answer in fully simplified form.<br> -12x = -10
satela [25.4K]

Answer:

0.83333333333

Step-by-step explanation:

you divide -12 both sides but its a really odd number

5 0
3 years ago
Read 2 more answers
how many such tests would it take for the probability of committing at least one type i error to be at least 0.7? (round your an
drek231 [11]

The number of tests that it would take for the probability of committing at least one type I error to be at least 0.7 is 118   .

In the question ,

it is given that ,

the probability of committing at least , type I error is = 0.7

we  have to find the number of tests ,

let the number of test be n ,

the above mentioned situation can be written as

1 - P(no type I error is committed) ≥ P(at least type I error is committed)

which is written as ,

1 - (1 - 0.01)ⁿ ≥ 0.7

-(0.99)ⁿ ≥ 0.7 - 1

(0.99)ⁿ ≤ 0.3

On further simplification ,

we get ,

n ≈ 118 .

Therefore , the number of tests are 118 .

Learn more about Error here

brainly.com/question/17062640

#SPJ4

4 0
1 year ago
What is the missing number?<br><br> Question 4 options:
Semenov [28]

Answer:

i dont see it

Step-by-step explanation:

6 0
2 years ago
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