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Zarrin [17]
3 years ago
8

V / -0.8 +14=39 plssss help this is literally so hard ​

Mathematics
1 answer:
Nat2105 [25]3 years ago
3 0
<h2><u>Answer:</u></h2><h2> \boxed{\boxed{\sf~v=-20}}</h2><h2 /><h2><u>Solution Steps:</u></h2>

______________________________

<h3>1.) Subtract 14 from both sides:</h3>
  • 14-14= Cancels Out
  • 39-14=25

<em>  - We do this because we have to get 2 variables/numbers on each side of the equals, and the only way to do so is to cancels other numbers out by doing the opposite of what we see. </em>

<u>Equation at the end of Step 1: </u>

  • v ÷ -0.8=25

<h3>2.) Multiply both sides by −0.8:</h3>
  • -0.8 × -0.8= Cancels Out
  • 25 × -0.8=-20

______________________________

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Mkey [24]
The numerator represents a number of equal parts, and the denominator is how many of those equal parts make up a whole.
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4 years ago
5 minus the product of 2 and a number is 7 as a equation
mrs_skeptik [129]

Answer:

2x - 5 = 7

Step-by-step explanation:

product is the result of multiplication which means multiplication is involved with 2 and a number which can be substituted for x

5 is subtracted from all of that

7 is the answer of it all

5 0
4 years ago
What is equivalent to -1/4y -2 1/4y + 1/2 (4-2y) a) -3y + 2 b) -3 1/2y + 2 c) -4y + 4
Amanda [17]

Answer:

B. -3 1/2y + 2

Step-by-step explanation:

Our expression is: \frac{-1}{4} y-2\frac{1}{4} y+\frac{1}{2} (4-2y).

Let's first distribute out that parentheses. Remember that distribution is simply taking the sum of the product of the outside term with each of the inside terms. Here, the outside term is 1/2 and the inside terms are 4 and -2y:

\frac{1}{2} (4-2y)=\frac{1}{2} *4+\frac{1}{2} *(-2y)=2-y

Now, we have:

\frac{-1}{4} y-2\frac{1}{4} y+2-y

We want to combine like terms, which means combining all the terms with y in them:

\frac{-1}{4} y-2\frac{1}{4} y-y+2=\frac{-1}{4} y-\frac{9}{4} y-\frac{4}{4} y+2=\frac{-1-9-4}{4} y+2=\frac{-14}{4} y+2=\frac{-7}{2} y+2

Remember that -7/2 can be written as the mixed number -3 1/2, so our final answer is:

-3 1/2y + 2

The answer is thus B.

<em>~ an aesthetics lover</em>

7 0
3 years ago
Given the function h(x)=-x^2+4x+12, determine the average rate of change of the function over the interval −2≤x≤4.
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Answer:

2

Step-by-step explanation:

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\frac{f(b) - f(a)}{b-a}

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f(a) = f(- 2) = - (- 2)² + 4(- 2) + 12 = - 4 - 8 + 12 = 0

Then

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