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Phantasy [73]
3 years ago
7

Can someone help me here pretty pls

Mathematics
1 answer:
IRINA_888 [86]3 years ago
7 0

5 minutes would be 290 and 8 minutes would be 464.

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The base of a triangle is twelvetwelve more than twice its height. if the area of the triangle is 4545 square​ centimeters, find
mr Goodwill [35]
In order to begin we must start off with the formula for the area of a triangle, which is a=1/2b(h) where a is area, b is base, and h is height.

In this scenario, we know that the area is 45cm^2 and the base is 2h+12 (since it is twice it’s height plus twelve). We can plug this into the area equation and then proceed to solve out accordingly.
a=1/2b(h)
45=1/2(2h+12)(h)
90=(2h+12)(h)
90=2h^2 + 12h
0= 2h^2 + 12h - 90

Simplify by dividing the two out.

h^2 + 6h - 45 = 0.

Now plug into the quadratic formula (with a=1, b=6, and c=-45) as shown in the image below.

After plugging the equation in and solving, we come to the idea that h is roughly equal to 4.34. We can now plug this back into the triangle area formula to solve out for b.
a=1/2b(h)
45=1/2(2h + 12)(h)
45=1/2(20.69)(4.34)
45=45.

In conclusion;
The height is ≈ 4.34
The base is ≈ 8.68

Hope this helps :)
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4 years ago
Find the distance between each pair of points. round your answer to the nearest tenth, if necessary. (-8, -5), (-4, 3)
Anuta_ua [19.1K]
The answer would be 8.9
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Expand and simplify 2(2x+3)+(5x+4)
LekaFEV [45]
2(2x+3)+(5x+4) simplified would be 4x+6+5x+4 and if you add those together you get 9x+10. Hope I helped! if you have any questions just leave a comment
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Answer asap please!!
skad [1K]
Answer is B. 11. The square root is roughly 10.5, so you round up and get 11
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Karen purchased fabric for a project she is working on. She bought 3 yards of fabric. Each yard cost $6.68. How much money did K
Juli2301 [7.4K]

Answer:

$20.04

Step-by-step explanation:

$6.68 x 3 = $20.04

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