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IRINA_888 [86]
2 years ago
6

Need quick help with 2 math equations asap! Thanks!

Mathematics
1 answer:
solong [7]2 years ago
5 0

Before answering, keep in mind that parallel lines have equal slopes and perpendicular lines have negative reciprocal slopes. Each problem has you find the slope and then use that rule.


For line F, m = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}}


Let xx_{1} = 7, xx_{2} = 9, yy_{1} = 13, yy_{2} = -3


m = \frac{-3 - 13}{9-7}


m = \frac {-16}{2}


m = 8


For line E, the calculations are similar and the slope is 3/5. The perpendicular line would have m = -5/3.

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What is the GCF of 28a^3 b and 16ab ? <br><br> A)4ab<br> B)4a3b<br> C)28ab<br> D)112a3b2
N76 [4]
28a⁴b: 2 · 2 · 7 · a · a · a · a · b
 16ab: 2 · 2 · 2 · 2 · a · b

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7 0
3 years ago
I need help with solving it
mars1129 [50]

The given equation has a slope of \frac{-9}{7}.  Parallel lines have the same slope.

Point-Slope formula: y - y₁ = m(x - x₁)  ; where (x₁, y₁) is the point and "m" is slope

y - y₁ = m(x - x₁)

y - (-4) = \frac{-9}{7}(x - 2)

y + 4 = \frac{-9}{7}x + \frac{18}{7}

<u>  - 4</u>     <u>       - \frac{28}{7}</u>

   y = \frac{-9}{7}x - <u>\frac{10}{7}</u>


7 0
3 years ago
Peter was given 40 words to spell to qualify for a prize. He must spell at least 90% of those words correctly. At least how many
AnnZ [28]

Answer:

He should have to spell at least 36 of these words correctly.

Step-by-step explanation:

40 words.

He must spell at least 90% of those words correctly.

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He should have to spell at least 36 of these words correctly.

6 0
2 years ago
Use elimination to solve the system of equations:
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4
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8 0
2 years ago
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8 0
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