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3 years ago

Which ordered pair is a solution of the equation? y=8x+3y=8x+3

Mathematics

2 answers:

jeyben [28]3 years ago

7 0

y=8x+3y=8x+3

the answer is (7,4) i think

_queenshadygucci_

Mrac [35]3 years ago

3 0

Multiply the first equation by 4 (so that both equations will have 8x terms) and then subtract:

8x-20y = -24

8x +3y = 68

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

0 -23y = -92

Now divide both sides by -23:

y = 4

Find x by plugging y=4 into either equation:

8x +3(4) = 68

8x = 68 - 12

8x = 56

x = 7

So the answer is ordered pair is (7,4)

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2 years ago

What is the value of x? A. 4 B. 4√3 C. 8 D. 8√3

SashulF [63]

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3 years ago

9. Find the volume of the triangular pyramid. (2pts)-10 mI9 m16 m

Makovka662 [10]

Answer:

240 m³

Explanation:

The volume of a pyramid is equal to:

$V=\frac{1}{3}\times B\times H$

Where B is the area of the base and H is the height of the pyramid.

Then, the base of the pyramid is a triangle, so the area of a triangle is equal to:

$B=\frac{b\times h}{2}$

Where b is the base of the triangle and h is the height of the triangle. So, replacing b by 16 m and h by 9 m, we get:

$B=\frac{16\times9}{2}=\frac{144}{2}=72m^2$

Finally, replacing B by 72 m² and H by 10 m, we get that the volume of the pyramid is equal to:

$V=\frac{1}{3}\times72\times10=\frac{1}{3}\times720=240m^3$

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1 year ago

Help!!! please!!! Confused!

OleMash [197]

∵AB＝CB
∴∠BAC＝∠BCA

∵AB bisect ∠MAT
∴∠MAB＝∠TAB

Hope my answer helped u :)

4 0

3 years ago