3 years ago

I need help please help me I don’t know what to don’t

Mathematics

1 answer:

Bezzdna [24]3 years ago

5 0

Answer:

wat it's I don't understand

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If 2.5 is a root of the equation 2x^2+5x−q=0, what are the possible values of q?

bulgar [2K]

Answer:

q = -25 $10 +5 = \pm \sqrt{5^2-4*2*q} \\ 225 = 25-8q \\\\8q = -200 \rightarrow q = -\frac {200}8 = -25$

Step-by-step explanation:

Grab the generic solution of the equation. $\frac 52 = \frac{-5 \pm \sqrt{5^2-4*2*q}}{2*2}$ . Let's isolate the radical, and square both sides. $10 +5 = \pm \sqrt{5^2-4*2*q} \\ 225 = 25-8q \\\\8q = -200 \rightarrow q = -\frac {200}8 = -25$

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3 years ago

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What is (9 to the 3rd power)6

Fittoniya [83]

It’s 9 times 9 times 9 times 6 = 4,374

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3 years ago

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Which could be the area of a face of the rectangular prism?

Dmitry_Shevchenko [17]

Answer:

The answer is

B. 6m²

Step-by-step explanation:

N/B: the drawing was not provided, so kindly find attached the drawing for your reference.

We know that the area of a rectangle = length *breath

From the diagram the rectangular surface has a length l=3m

Breath b=2m

Area = 3*2= 6m²

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3 years ago

Please hurry I’m not looking forward to failing

maks197457 [2]

Answer:
110

Explanation:
C shaped angle thing
180 - 70 = 110

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3 years ago

Today, everything at a store is on sale. The store offers a 20% discount. Match the following items with their sale price.

kicyunya [14]

Answer:

100 - 20 = 80

original cost/100 X 80 = sale price

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3 years ago