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dmitriy555 [2]
3 years ago
9

Help me I keep getting it wrong

Mathematics
1 answer:
gtnhenbr [62]3 years ago
4 0

Answer:

see explanation

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = \frac{2}{3} x - 6 ← is in slope- intercept form

with slope m = \frac{2}{3}

Parallel lines have equal slopes , then

y = \frac{2}{3} x + c ← is the partial equation

To find c substitute (9, 2) into the partial equation

2 = 6 + c ⇒ c = 2 - 6 = - 4

y = \frac{2}{3} x - 4 ← equation of parallel line

-------------------------------------------------------------------

Given a line with slope m then the slope of a line perpendicular to it is

m_{perpendicular} = - \frac{1}{m} = - \frac{1}{\frac{2}{3} } = - \frac{3}{2} , then

y = - \frac{3}{2} x + c ← is the partial equation

To find c substitute (9, 2) into the partial equation

2 = - \frac{27}{2} + c ⇒ c = 2 + \frac{27}{2} = \frac{31}{2}

y = - \frac{3}{2} x + \frac{31}{2} ← equation of perpendicular line

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Answer:

D

Step-by-step explanation:

Since triangles ABC and CDB are similar, CD and CB is the same as the ratio between CB and CA. 15:9=x:15. x=25. Subtracting CD to just be left with AD, we get 25-9=16, or answer choice D. Hope this helps!

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3 years ago
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2 years ago
Which of the following algebraic expressions can be used to express the statement "three less than z squared?"
Citrus2011 [14]
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6 0
3 years ago
Pam and her sister have a pattern of saving money. Pam saved 40 dollars and her brother saved 100 dollars.
Keith_Richards [23]

Answer:

true

Step-by-step explanation:

Pam saved 40

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3 years ago
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A class is selling magazines as a fund raiser. Of the 500 magazines sold, Amy sold 1/9 of them. Garret sold 0.145 of the magazin
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500 total magazines...

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Garret sold 0.145.....0.145(500) = 72.5
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Carlita sold 0.095.....0.095(500) = 47.5

Garret sold the most

or u could have done it this way...
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u will still get the same answer...Garret

3 0
3 years ago
Read 2 more answers
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