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QveST [7]
3 years ago
13

What is the value of r in (3r+4) ° (8r-2

Mathematics
1 answer:
lana66690 [7]3 years ago
8 0

Answer:

r = 49

Step-by-step explanation:

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2x+14y=-108 9x+2y= 2 Solve the following system of equations using any method
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<span>2x+14y=-108
</span><span>63x+14y= 14       (multiply the second equation by 7 and subtract)
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-61x=-122
x=-122/-61
x=2
2(2)+14y=-108
4+14y=-108
14y=-112
y=-112/14
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Please help ASAP!!!<br><br> it is science<br><br> what are the body parts of a mollusk??
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Answer:

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URGENT!!! please help me with these two problems, and solve with statement-reasoning. Thank you!!!
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Answer:

See below.

Step-by-step explanation:

By definition the median of the triangle bisects the  base of the isosceles triangle.

We need to prove that the 2 triangles formed by the median are congruent.

If the 2 triangles are ABD  and ACD  where BD is the median and < ABC is the angle from which BD is drawn.

BD = BD  ( the common side)

AD = DC ( because BD is the median).

AB =  AC ( because ABC is  an isosceles triangle).

So Triangles ABD and ACD are congruent by SSS.

Therefore  m < ABD = m <  CBD,  so BD is the bisector of < ABC.

To prove BD is also the altitude:

Triangles ABD and CBD are congruent as we have just proven. Therefore the

of measure of the base angle ABD = m < CBD . Also they are adjacent angles ( on the same line) so they add up to 180.

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8 0
3 years ago
How would you graph 10&lt;=20
irinina [24]

Answer:

with a line

Step-by-step explanation:

so you get a use a graph calculator and you put in that and it shows the answer.

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Minchanka [31]
Where’s the picture of the question or the blank?
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2 years ago
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