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Lostsunrise [7]
3 years ago
15

How to solve -66.17738=6.618(4.3x+1.1)-7.1(x-6.8) have not done algebra in 30 years and cannot help my son with this problem

Mathematics
2 answers:
fenix001 [56]3 years ago
4 0

Let's solve your equation step-by-step.

−66.17738=6.618(4.3x+1.1)−7.1(x−6.8)

<em>Step 1: Simplify both sides of the equation. </em>

−66.17738=6.618(4.3x+1.1)−7.1(x−6.8)

−66.17738=(6.618)(4.3x)+(6.618)(1.1)+(−7.1)(x)+(−7.1)(−6.8)(Distribute)

−66.17738=28.4574x+7.2798+−7.1x+48.28

−66.17738=(28.4574x+−7.1x)+(7.2798+48.28)(Combine Like Terms)

−66.17738=21.3574x+55.5598

−66.17738=21.3574x+55.5598

<em>Step 2: Flip the equation. </em>

21.3574x+55.5598=−66.17738

<em>Step 3: Subtract 55.5598 from both sides</em>.

21.3574x+55.5598−55.5598=−66.17738−55.5598

21.3574x=−121.73718

<em>Step 4: Divide both sides by 21.3574. </em>

21.3574x

21.3574

=

−121.73718

21.3574

<u>x=−5.7</u>

kondor19780726 [428]3 years ago
3 0
These are a lot of numbers but I think the answer would b 73.73442
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Answer:

The first image.

x |  y

-4 | 0

0 | 20  <--- When x = 0, the y value is the y-intercept.

4 | 40

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Step-by-step explanation:

To check the slope, we can use the equation (y₂ - y₁) ÷ (x₂ - x₁) using any two pairs given. For this example, I'll use (-4, 0) and (4, 40).

                                                              x₂  y₂         x₁   y₁

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<u></u>

~Hope this helps!~

8 0
3 years ago
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What are the explicit equation and domain for an arithmetic
max2010maxim [7]

Given:

First term of an arithmetic sequence = 5

Second term = 3

To find:

The explicit formula for the given arithmetic sequence.

Solution:

We have,

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Second term: a_2=3

Common difference is

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d=-2

Now, the explicit formula for an arithmetic sequence is

a_n=a+(n-1)d

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It can also be written as

a_n=5-2n+2

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Domain is the set of input values.

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3 years ago
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