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zhannawk [14.2K]
2 years ago
15

PLEASE HELP I WILL MARK BRAINLIEST

Mathematics
1 answer:
Mice21 [21]2 years ago
7 0

Answer:

180 i think if you are not sure with my ans then just don't use it k bey

Step-by-step explanation:

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Factor the quadratic equation below to reveal the solutions. X^2+4x-21=-9
a_sh-v [17]

Answer:

x = 3 and x = -7

Step-by-step explanation:

The given quadratic equation is x^2+4x-21=0. We need to find the solution of this equation.

If the equation is in the form of ax^2+bx+c=0, then its solutions are given by :

x=\dfrac{-b\pm \sqrt{b^2-4ac} }{2a}

Here, a = 1, b = 4 and c = -21

Plugging all the values in the value of x, such that :

x=\dfrac{-b+ \sqrt{b^2-4ac} }{2a},\dfrac{-b- \sqrt{b^2-4ac} }{2a}\\\\x=\dfrac{-4+ \sqrt{(4)^2-4\times 1\times (-21)} }{2(1)},\dfrac{-4- \sqrt{(4)^2-4\times 1\times (-21)} }{2(1)}\\\\x=3, -7

So, the solutions of the quadratic equation are 3 and -7.      

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3 years ago
You need to earn at least $100. You earn $8.00 per hour mowing lawns. Write and solve an inequality that represents the number o
leonid [27]

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subject?

Step-by-step explanation:

7 0
3 years ago
∆ XYZ ≅ ∆ MNL<br><br> Find XY
aivan3 [116]
95 because if you do the math you’ll get the answer
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What is the relationship between the 6s in 660,472​
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The first 6 is 600,00 and the second is 60,000, so they are in the hundred thousands place and the thousands place
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In ΔCAB, point E is the midpoint of AC and point D is the midpoint of BC . If the measure of AB is 8 units, what is the measure
strojnjashka [21]

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4 units

Step-by-step explanation:

CAB and EAD are similar triangles with sides in the ratio 2:1

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4

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