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Ghella [55]
2 years ago
11

Brainiest to whoever is correct

Mathematics
1 answer:
olchik [2.2K]2 years ago
8 0

Answer:

algebra

angle in a triangle is 180degree so you do 20+8=180degree and you do y+x+v+w+z+b

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Find the area. Answer without units
sergiy2304 [10]
I think it would be 105


19+15+32+13+26
4 0
3 years ago
More solving quadratic equations: the quadratic formula again, what we've all been waiting for. the quadratic formula is pretty
kirill [66]
You don't have a question in there but I can tell you that the quadratic formula that is shown is not quite correct.
<span>x = -b ± √b2 - 4ac 2a
For one thing, the first 3 terms should ALL be divided by 2a
The square root symbol should be extended from b^2 through 4ac
The division symbol is missing.
So the quadratic formula SHOULD read:
x = [-b +- sq root (b^2 - 4ac) ] / 2a
Also I have attached a graphic of the quadratic formula.



</span>

5 0
3 years ago
The height of a trapezoid can be expressed as x – 4, while the bases can be expressed as x + 4 and x + 9. if the area of the tra
AlexFokin [52]

Answer: 19 cm

<u>Step-by-step explanation:</u>

A_{trapezoid}=\frac{b_{1}+b_{2}}{2}*h

                99 = \frac{(x+4 + x+9}{2}*(x - 4)

                99 = \frac{(2x + 13}{2}*(x - 4)

              198 = (2x + 13)(x - 4)

              198 = 2x² + 5x - 52

                 0 = 2x² + 5x - 250

                 0 = 2x²- 20x + 25x - 250

                 0 = 2x(x - 10) + 25( x - 10)

                 0 = (2x + 25)(x - 10)

0 = 2x + 25     or        0 = x - 10

  -\frac{25}{2} = x      or          x = 10

Since length cannot be negative, -\frac{25}{2} can be disregarded

Larger base: x + 9  = 10 + 9   = 19

5 0
2 years ago
Read 2 more answers
Como se hace -8n+7=31
velikii [3]
-8n+7=31
-8n+7-7=31-7
-8n=31-7
-8n=24
-8n÷(-8)=24÷(-8)
n=24÷(-8)
n=-24÷8
n=-3
8 0
3 years ago
One box holds 16 crayons.Another box holes 24 crayons.Write a sentence using words that compares the crayons in two boxes.
arlik [135]
One box is bigger than the other
5 0
2 years ago
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