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My name is Ann [436]
2 years ago
10

X2 – 1x – 90 = 0 has solutions {a, b}. What is a + b?

Mathematics
1 answer:
s344n2d4d5 [400]2 years ago
3 0

Answer:

a + b =1

Step-by-step explanation:

Write the given quadratic as x^2 – 1x – 90 = 0.  This factors into

(x - 10)(x + 9) = 0, and so the roots/solutions are {-9, 10}.

If we call -9 "a" and 10 "b," then the sum a + b is -9 + 10, or a + b =1.

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In-s [12.5K]
The correct answer to your question is 15 days because if she drinks 1/3 of a can a day it will take 3 days to drink one can. Now multiple the 3 days for one can by the 5 cans and you get 15 days to finish all of the cans.
7 0
2 years ago
What number adds up to be 12 but also multiplies to be 12
netineya [11]
4+3+1+1+1+1+1 =12
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8 0
3 years ago
If a square has a side of 4', what would the area be?<br>A= s2=sxs<br>A= 42= 4'x4<br>A= 16 sq. ft.
statuscvo [17]

Answer:

16 sqft.

Step-by-step explanation:

A=L(W)

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Hope that helps

4 0
3 years ago
Please help! I will mark as brainliest IF answer is right. &lt;3
kramer

Step-by-step explanation:

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Range y belongs to [-4 , 4]

6 0
3 years ago
Lucas wants to put soil in his garden shown below. If soil comes in bags that fill 2 square yards each, how many bags of soil sh
Phantasy [73]

Answer:

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so you will nee 3 bags of soil.

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