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vagabundo [1.1K]
3 years ago
15

Can someone help me with this problem. Ive been trying to work it out for a while now and still cant seem to find the answer.

Mathematics
1 answer:
Karolina [17]3 years ago
3 0

Answer:

DG=8.62

Step-by-step explanation:

DG is also the hypotenuse. Use the sine ratio. Insert values:

sineX=\frac{opposite}{hypotenuse}\\\\sin72=\frac{8.2}{x}

Solve for x. Multiply both sides by x:

x*(sin72)=x*(\frac{8.2}{x} )

x*sin72=8.2

Divide both sides by sin 72:

\frac{x*sin72}{sin72}=\frac{8.2}{sin72}

x=\frac{8.2}{sin72}

Insert into a calculator:

x=8.622

Round to the nearest hundredth:

x=8.62

Done.

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Write an equation that passes through the point (1, 3) and is perpendicular to x – 2y = -8.
Umnica [9.8K]

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y = -2x + 5

Step-by-step explanation:

Given:

Passes through point (1, 3)

Perpendicular to x – 2y = -8

Solve:

x – 2y = -8

y = 1/2x + 4

The slope is m = 1/2

The slope of the perpendicular line is the inverse of the slope of the original equation.

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Making an inverse equation of y = -2x + a

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2 years ago
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The total surface area of this triangular pyramid is_____?<br><br> help asap
Inessa05 [86]

Answer: 208 in^2

Step-by-step explanation:

find the surface area of the square base

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2 years ago
Does anyone get this​
ivolga24 [154]

Answer:

Step-by-step explanation:

Ok so to find constant of proportionality, you need to find K.

X would be gallons and y is cost.

To find k you need to do k=y/x

k=17.50/5

k=3.5

That's the first one. Now you need to make sure its <em>constant</em> with each one so keep going.

k=35/10

k=3.5

k=52.50/15

k=3.5

For all of those 3.5 was constant.

Because they are constant, that means the data in the graph is a proportion.

An example of an unproportional relationship would be if instead of 15 in the last column, it was 16.

k=52.50/16

k=3.28

That be different from the other 3.5's meaning its not proportional. But that's just an example.

If you need extra help reach out to me and I'll help you best I can. I hope this helps though. <3

8 0
3 years ago
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