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3 years ago

11

Solve the proportion

1 answer:

ad-work [718]3 years ago

4 0

Answer :
D) x =18/5

Solution :

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Assume that when adults with smartphones are randomly selected, 57% use them in meetings or classes. If 8 adult smartphone use

vovikov84 [41]

Answer:

≈ 0.2526

Step-by-step explanation:

<u>The number of combinations of 4 out of 8:</u>

8C4 = 8!/(4!(8-4)!)= 8*7*6*5/(1*2*3*4)= 70

<u>Success factor is: </u>

57% = 0.57

<u>and failure factor is: </u>

(100 - 57)%= 43%= 0.43

<u>Probability:</u>

0.57⁴*0.43⁴*70 ≈ 0.2526

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3 years ago

Find the value of this expression if x= -7<br><br> x^2+5/x+1

Ray Of Light [21]

Answer:

-9

Step-by-step explanation:

Replace x with -7 in the expression:

x^2 + 5 / x + 1

-7^2 + 5 / -7 + 1

49 + 5 / -6

54/-6

simplify the fraction

9/-1 = -9

8 0

3 years ago

The sum of the cube of a number and 12

Black_prince [1.1K]

Let the "number" be n.

The expression would be $n^3+12$

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3 years ago

A farmer wants to increase the area of his rectangular pen but keep the pen a rectangular shape. He decides to add 2 1/2 feet of

sesenic [268]

Answer:

91/4(w+21/2)=108 3/4

Step-by-step explanation:

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3 years ago

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PLS HELP ME, PLS THIS IS DUE FIRST CORRECT ANSWER GETS BRAINLIEST

goblinko [34]

Answer:

C

Answer is
C

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2 years ago

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