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ss7ja [257]
3 years ago
15

Solve for x.5(x – 10) = 30 – 15x

Mathematics
1 answer:
nlexa [21]3 years ago
6 0
5(x-10)=30-15x

5x-50=30-15x

20x=30+50
x=4.
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What does 8x + 4 equal?
postnew [5]

Answer:

4 (2x+1)

Step-by-step explanation:

Factor 4 out of 8x+4

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2 years ago
Read 2 more answers
Pls help. Evaluate the expression 3.14(a2 + ab) when a = 3 and b = 4. (Input decimals only, such as 12.71, as the answer.)
givi [52]
3.14(3(2) + 3(4))
3.14( 6 + 12) 
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4 0
3 years ago
Find the equation of a parabola with a vertical axis and its vertex at the origin and passing through the point (-2, 3)
vredina [299]

a vertical axis, I assume it means a vertical axis of symmetry, thus it'd be a vertical parabola, like the one in the picture below.

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8 0
3 years ago
Please help! Please explain how to do this, I am so lost.
alexdok [17]
Ok, so we know that RST is equal to 6x+12
And RST is also equal to 78 + 3x-12
so we set them equal to each other

6x + 12 = 3x - 12 + 78
And simplify
3x = 54
x = 18

Finally, we solve for the angle with 18 for x

6(18) + 12
108 + 12
120

Hope this helps
8 0
2 years ago
Please help don’t understand
JulijaS [17]
The angles opposite equal sides are also equal. The sum of angles in a triangle is 180. So 2x + 27 + 2x + 27 + 3x + 28 = 180.

7x + 82 = 180
7x = 98
x = 14

Now plug x into each angle to find their measures.
6 0
2 years ago
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