3 years ago

Simplify 5(x - 2) + 3x A.8x - 2 B.8x - 10 C.-7x

Mathematics

2 answers:

timofeeve [1]3 years ago

7 0

The answer should be B. 8x-10

Novosadov [1.4K]3 years ago

5 0

The answer is B because u multiply each number in parenthesis by 5

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Please I need help!!!

Valentin [98]

Answer:

Solution given:

for second

we have

f(x)=x²-9x-36

let

y=x²-9x-36

when

x=0

y=-36

when

y=0

0=x²-9x-36

x²-12x+3x-36=0

x(x-12)+3(x-12)=0

(x-12)(x+3)=0

either

x=12

x=-3

So,

x and y intercepts are (-3,0)(12,0) and 0,-36)

7 0

3 years ago

Dalton and Connor each invest money. The function f(x) = 850(1.07)x models the value of Dalton’s account after x years. The func

masha68 [24]

The answer to the question is A. 7%.

7 0

3 years ago

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To get a B in math, Alexandria Pappas must average 80 on five tests. Scores on the first four tests were 82,74,82,and 74.Wha

motikmotik

Answer:

88 score.

Step-by-step explanation:

Given:

To get a B in math, Alexandria Pappas must<u> average 80</u> on five tests.

Scores on the first four tests were <em>82, 74, 82, and 74.</em>

Question asked:

What is the lowest score that she can get on the last test and still get a B?

Solution:

Let lowest score she can get on the last test = $x$

As we know:

$Average=\frac{Sum\ of \ observations}{Number\ of\ observations}\\ \\ 80=\frac{82+74+82+74+x}{5} \\ \\$

By cross multiplication:-

$80\times5=312+x \\ \\400=312+x\\Subtracting\ both\ sides\ by\ 312\\400-312=312-312+x\\88=x$

Thus, she can get 88 score on the last test to get a B in math.

5 0

4 years ago

6+2(5-3a)=2a(2+8).....

qaws [65]

4000 hope I helped you

7 0

3 years ago

Solve the equation and determine the value of t. t + 38 = 420

Valentin [98]

Answer:

t=382

Step-by-step explanation:

6 0

3 years ago

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