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xxTIMURxx [149]
3 years ago
12

14. Solve the following equations. (a), 7x + 8 = 10 + 3x

Mathematics
2 answers:
3241004551 [841]3 years ago
4 0

answer: x = 1/2

<u>explanation</u>

subtract 3x from both sides

4x+8=10

subtract 8 from both sides

4x=2

divide both sides by 4

x=2/4

simplify

x=1/2 OR x=.5

hope i helped!

Aleonysh [2.5K]3 years ago
4 0

Answer:

x = 1/2

Step-by-step explanation:

7x + 8 = 10 + 3x  (subtract 3 from both sides)

7x -3x +8 = 10  

4x + 8 = 10 (subtract 8 from both sides)

4x = 10 - 8

4x = 2 (divide both sides by 4)

x = 2/4 = 1/2

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6 0
3 years ago
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Gnom [1K]
X=length
y=width
Area (rectangle)=length x width
we suggest this system of  equations:
y=x/5
xy=9/20
solve this system of equations by substitution method:
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x²/5=9/20
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4x²=9
x²=9/4
x=⁺₋√(9/4)
we have two solutions:
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The dimensions of the lake are:
lengh=3/2 miles
width=3/10 miles

to check:
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7 0
3 years ago
Find the length of a line segment with endpoints of -9 and 7.
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Let L be the length

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8 0
3 years ago
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aev [14]

Answer:

True

Step-by-step explanation:

Formula

Tan(x) = opposite / adjacent

Givens

x = 42

adjacent = 14

opposite = ?

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Tan(42) = 0.900404

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14 * 0.900404 = opp/14 * 14   Simplify the left

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