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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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Step-by-step explanation:

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7 0
2 years ago
What is the length of the hypotenuse in a right triangle if the legs are 50 and 120
miv72 [106K]

Good evening  

Answer:

<h2>130</h2><h2 />

Step-by-step explanation:

let L represent the length of the hypotenuse :

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the Pythagoren theorem states that :

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then

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__________________________

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5 0
3 years ago
The table below gives a record of variations of the values of y with the values of x. Draw a scatter plot for the data.
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6 0
3 years ago
Read 2 more answers
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Answer:

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Step-by-step explanation:

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8 0
2 years ago
Four more than double a number is 100 what is the answer?
algol13

Answer:

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Step-by-step explanation:

48 + 48 = 96

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7 0
3 years ago
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