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storchak [24]
3 years ago
10

How do I figure out solve kx+7=4 for x​

Mathematics
1 answer:
Vedmedyk [2.9K]3 years ago
6 0
<h3>Answer:   x = -3/k</h3>

==============================================

Work Shown:

kx+7 = 4

kx+7-7 = 4-7 .... subtract 7 from both sides

kx = -3

kx/k = -3/k .... divide both sides by k

x = -3/k

The value of k cannot be zero. As the steps show, we are following PEMDAS in reverse to undo each operation to help isolate x. Subtraction is the opposite of addition, and division is the opposite of multiplication.

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3 years ago
3 / m + 4 - 4 / m = 6 (i) Show that this equation can be written as 6m^2 + 25m+16= 0
Evgen [1.6K]

Answer:

Proved Below

Step-by-step explanation:

\sf \frac{3}{m+4} - \frac{4}{m} = 6\\LCM = m(m+4)\\Multiplying \ both \ sides \ by\ m(m+4)\\3m - 4(m+4) = 6m(m+4)\\3m-4m-16 = 6m^2+24m\\-m-16 = 6m^2+24m\\Adding\ m\ to\ both\ sides\\-16 = 6m^2+24m+m\\-16 = 6m^2+25m\\Adding \ 16 \ to \ both \ sides\\0 = 6m^2+25m+16\\OR\\6m^2+25m+16 = 0

Hence, Proved that \sf \frac{3}{m+4} - \frac{4}{m} = 6 is equivalent to \sf 6m^2+25m+16 = 0.

6 0
3 years ago
Read 2 more answers
HELP ASAP!! IM FAILING AND I TRANSFER IN A WEEK. IDK HOW TO DO THIS:
suter [353]
X = W
y = L

<span>1. Write a function that could be used to find the garden’s length y in feet,
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</span>
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y = 20/x

<span>2. What happens to the length of the 20-square-foot garden as its width
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Step-by-step explanation:

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Answer:

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x+5=

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7 0
3 years ago
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