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3 years ago

If u add 125 to 0.5 of a number ,the result is 800 which equation would help you to find the number?

Mathematics

1 answer:

Brrunno [24]3 years ago

6 0

Let the number be n. Then 0.5n+125=800.
Multiply all 3 terms by 10:

5n+1250=8000, or n = 6750 (answer)

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In the following table of values, the first differences are

ExtremeBDS [4]

Answer:

-7

Step-by-step explanation:

Given

$\begin{array}{ccc}x & {y} & {First\ difference} & {-2} & {34} & {}&{-1} & {27} & {} &{0} & {20} & {} & {1} & {13} & {} & {2} & {6} &{} \ \end{array}$

Required

The first difference

To do this, we simply calculate the difference between the consecutive y-values.

i.e.

$d = y_{n+1} - y_n$

So, we have:

$d = y_2 - y_1 = 27 - 34 = -7$

$d = y_3 - y_2 = 20 - 27 = -7$

$d = y_4 - y_3 = 13 - 20 = -7$

$d = y_5 - y_4 = 6-13 = -7$

<em>Hence, the first differences are -7 (all through)</em>

5 0

3 years ago

Katrina drinks 0.5 gallons of water per day. Which expression shows how to find the number of cups of water she drinks in a week

Vilka [71]

The answer is 128 i hope that helps

8 0

3 years ago

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SOVA2 [1]

distributive property

-4x - y + 2x - 6y

Combine like terms

-2x - 7y

6 0

3 years ago

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What value of x makes the equation -5x - (-7 - 4x) = -2(3x - 4) tru

Aloiza [94]

Answer: 1/10 or 0.1

Step-by-step explanation:

-(-7 - 4x) = -2(3x - 4)

7 + 4x = -6x + 8

* subtract 7 from both sides

4x = -6x + 1

* Add 6x to both sides

10 x = 1

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2 years ago

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Butoxors [25]

Answer:

x = -30

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Step-by-step explanation:

Look at the picture

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2 years ago