2 years ago

Which of the following is the equation of a line perpendicular to the line y=-3/2x+4 passing through the points (3,9)

Mathematics

1 answer:

Luba_88 [7]2 years ago

5 0

<span>Y-y1=m(x-x1)

Y-9 =2/3 (x-3)

Y-9=(2/3)x - 2

Y=(2/3)x + 7

Heres some formulas...</span>

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Answer:

$172.5 hope this helps

Step-by-step explanation:

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2 years ago

3. Sadie and Josie are asked to wrie an expression equivalent to 3(2x+3y).

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The answer is A!
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2 years ago

Base of triangle exceeds the height by 4. If the area is 178.5 square inches, find the length of the base and the height of the

xxMikexx [17]

Area of a triangle:
A= (1/2)(bh)

In this problem we are given:
A= 178.5 $in^{2}$
b= h+4 in
h= UNKNOWN ("h")

Plug in our values into the area equation and solve for "h":
$A= \frac{1}{2} bh$
$178.5 = \frac{1}{2} ((h+4)h)$ (multiply each side by 2 to get rid of the 1/2)
$357 = ((h+4)h)$
$357 = h^{2} +4h$
$0= h^{2} +4h -357$
(357/21=17)
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$0= (h+21)$
$-21= h$ ( a negative height is not possible so, this answer is incorrect.)

$0=(h-17)$
$h=17 in$

Answer: base = (h+4)= (17+ 4) b= 21 in h= 17in

Please comment with any further questions! :)

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2 years ago

Graph the inequality y+4<-2(×+4)

rodikova [14]

$y + 4 < - 2(x + 4) \\ \\ 1. \: - \frac{y + 4}{2} > x + 4 \\ 2. \: - \frac{y + 4}{2} - 4 > x \\ 3. \: x < - \frac{y + 4}{2} - 4$