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xeze [42]
2 years ago
7

If 2x^2-5x+7 is subtracted from x^2+2x-11, what is the leading coefficient?

Mathematics
1 answer:
guajiro [1.7K]2 years ago
3 0

Answer:

-1

Step-by-step explanation:

2x² - 5x + 7 is subtracted <em>from </em>x² + 2x - 11, so

(x² + 2x - 11) - (2x² - 5x + 7)

x² + 2x - 11 - 2x² + 5x -7 (Distribute the negative)

-x² + 7x - 18 (Combine like terms)

The leading coefficient is the coefficient of the first term, so it is -1.

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Answer:

She could purchase from stores A, D and E.

Step-by-step explanation:

She needs 8 cups so I multiplied each price by 8;

Store A 0.49(8)=$3.92

Store B 0.51(8)=$4.08

Store C 0.55(8)=$4.40

Store D 0.48(8)=$3.84

Store E 0.45(8)=$3.60

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3 years ago
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A researcher claims that a post-lunch nap decreases the amount of time it takes to run 20 meters. Ten subjects are randomly sele
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Answer:

4. A​ post-lunch nap decreases the amount of time it takes males to sprint 20 meters.

Step-by-step explanation:

This question wants us to state the claim and the hypothesis.

This researchers claim can be found in the first sentence of this question.

Claim: post lunch nap decreases the time it takes to run for 20 meters.

The correct answer option for the claim is the 4th answer option. And it means that sleeping after lunch reduces the time it takes males to run in a 20m race.

B. Hypothesis

H0: Ud <= 0

H1: Ud > 0

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5 0
2 years ago
A bag contains 19 white balls and 6 black balls. the balls are drawn with replacement. what is the expected number of white ball
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3 years ago
If line GH is perpendicular to line HJ, then GJ is ____ HJ.
valentinak56 [21]

Option A: >

Solution:

Given a triangle GHJ.

The line GH is perpendicular to line HJ.

This means the triangle is a right angled triangle.

In ΔGHJ, GH is the base of the triangle and

HJ is a height of the triangle.

Then the third side must be the hypotenuse of the right triangle.

We know that by the Pythagoras theorem,

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(\text {GJ})^2=(\text {GH})^2+(\text {HJ})^2

This clearly shows that the hypotenuse is greater than the height.

⇒ GJ > HJ

Option A: > is the correct answer.

If line GH is perpendicular to line HJ, then GJ is > HJ.

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Can someone explain how to solve the system of equation x+y=3 by graphing?
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Answer:

its not possible


Step-by-step explanation:


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