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seraphim [82]
3 years ago
15

The points (3,-2) and (7,r) lie on a line with the slope 3/4. Find the missing coordinate r.​

Mathematics
1 answer:
snow_lady [41]3 years ago
8 0

Answer:

the answer is 1

Step-by-step explanation:

X1=3 X2=7

Y1=-2 Y=r

M=y2-Y1/X2-X1

3/4=r-(-2)/7-3

3/4=r+2/4

Cross multiply

4(r+2)=4*3

4r+8=12

collect like terms

4r=12-8

4r=4

divide the by the co efficient of x

r=1

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In AGHI, h = 300 inches, G=30° and H=29º. Find the length of i, to the nearest<br> inch.
dalvyx [7]

Given:

In triangle GHI, h = 300 inches, G=30° and H=29º.

To find:

The length of i.

Solution:

We have, G=30° and H=29º.

Using angle sum property, we get

m\angle G+m\angle H+m\angle I=180^\circ

30^\circ+29^\circ+m\angle I=180^\circ

59^\circ+m\angle I=180^\circ

m\angle I=180^\circ-59^\circ

m\angle I=121^\circ

According to Law of sines,

\dfrac{a}{\sin A}=\dfrac{b}{\sin B}=\dfrac{c}{\sin C}

Using Law of sines, we get

\dfrac{h}{\sin H}=\dfrac{i}{\sin I}

\dfrac{300}{\sin 29^\circ}=\dfrac{i}{\sin 121^\circ}

\dfrac{300}{0.4848}=\dfrac{i}{0.8572}

Multiply both sides by 0.8572.

\dfrac{300}{0.4848}\times 0.8572=i

530.44554=i

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Therefore, the length of i is about 530 inches.

6 0
3 years ago
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ArbitrLikvidat [17]
The answer is B, 5+7=12. You can also just subtract 5 from 12 and that’ll also give you the answer
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What is the slope of these two equations?
Juli2301 [7.4K]

Answer:

8. 0

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Step-by-step explanation:

8. 0

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> because the x variable is always the same, no matter what y variable we graph, we will have the same outcome. So, this would look like a straight line, which have an undefined slope.

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<em />

<em />

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xz_007 [3.2K]

Answer:

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Step-by-step explanation:

Answered by Gauthmath

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Step-by-step explanation:

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