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sesenic [268]
3 years ago
15

What could describe Anita’s race from minute 3 to minute 5?

Mathematics
2 answers:
amm18123 years ago
7 0

Answer:

b) She stopped to change a flat tire.

Step-by-step explanation:

I'm assuming the y-axis of the graph says distance.

Over time, Anita did not move at all which indicates that she stopped. There is nothing to do with speed in this question do you can take out answers a) and d). c) is pretty irrelevant because why would Anita continue riding her bike after if she already won. So the answer is b) She stopped to change a flat tire.

Hope this helped! :)

victus00 [196]3 years ago
6 0
She stopped to change a flat tire
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If x+a is a factor of 2x²+2ax+5x+10,find a.
vazorg [7]

If x+a is a factor of the polynomial, it means that -a is a root of the polynomial.

In fact, if a polynomial p(x) has a root x_0 (i.e. p(x_0)=0), then the polynomial is divisible by (x-x_0)

In your case, you know that the polynomial is divisible by (x+a)=(x-(-a)), so -a is a solution.

Let's evaluate p(-a) and set it to zero:

2(-a)^2+2a(-a)+5(-a)+10 = 0 \iff 2a^2-2a^2-5a+10=0 \iff -5a+10 = 0 \iff a = 2

We can check the answer: if a=2 the polynomial becomes

2x^2+2(2)x+5x+10 = 2x^2+9x+10

And we're claiming that -a=-2 is a root of this polynomial:

2(-2)^2+9(-2)+10 = 2\cdot 4 - 18 + 10 = 0

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3 years ago
How do I find the side lengths for this triangle if only one side and ond angle is given? Plz help
alexandr1967 [171]
The two unknown sides are equal to each other so then the two unknown angles are also equal.

A triangle angles add up to 180
36 + 2x = 180
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cos(72) = 11/H
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answer E .



8 0
3 years ago
A construction crew has just finished building a road. The crew worked for 10 days. If they built 314 kilometers of road each da
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Answer:

3140

Step-by-step explanation:

If they made 314 kilometers per day and they worked for 10 days, multiply:

314*10=3140

The total length of the road is 3,140 kilometers.

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3 years ago
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