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2 years ago

12

Write a number sentence to represent the sum modeled on the number line. In two or more complete sentences, explain your reasoni

ng.

1 answer:

Afina-wow [57]2 years ago

4 0

Answer:

0 + (-2.5) + 5

Step-by-step explanation:

from 0 to -2.5 then to 5 so add 0 + (-2.5) + 5

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What are the coordinates of (-3,4) when it is reflected over the y-axis.

AysviL [449]

Answer:

D. (4,3)

Step-by-step explanation:

(-3,4)

Reflection in the y-axis:

Same y, -ve x

(3,4)

Reflection in y = x

(x,y) goes to (y,x)

(3,4) goes to (4,3)

3 0

3 years ago

What is the positive solution of x square minus 36 equals 5x

777dan777 [17]

Answer:

<span>⇒x=9</span> (positive solution)

Explanation:

<span><span>x2</span>−36=5x</span>

<span>→<span>x2</span>−36−5x=0</span>

Factor the expression:

We get:

<span><span>(x−9)</span><span>(x+4)</span>=0</span>

First solution:

<span>⇒<span>(x−9)</span>=<span>0<span>x+4</span></span></span>

<span>⇒<span>(x−9)</span>=0</span>

<span>⇒x=<span>9</span></span>

3 0

3 years ago

For the functions f(x)=−7x^2−x and g(x)=9x^2−4x, find (f−g)(x) and (f−g)(1)

musickatia [10]

Answer:

See below.

Step-by-step explanation:

$f(x)=-7x^2-x\\g(x)=9x^2-4x\\(f-g)(x)=f(x)-g(x)\\(f-g)(x)=(-7x^2-x)-(9x^2-4x)\\(f-g)(x)=-7x^2-x-9x^2+4x\\(f-g)(x)=-16x^2+3x\\\\(f-g)(1)=-16(1)^2+3(1)\\(f-g)(1)=-16+3=-13$

5 0

3 years ago

On a piano achievement test, the final score is made up of 65% performance, 30% sight reading, and 5% written theory. John earne

kap26 [50]

It's 80.75 for the answer!

6 0

2 years ago

Flura [38]

Answer:

<em><u>C</u></em>

Step-by-step explanation:

-6(-2/3 + 2x)

= 12/3 = 4

4 is the answer to the first number times -6. This is because 2 negatives are equal to a positive.

-6 * 2x

= -12

<em><u>So, it can be concluded that the answer is C</u></em>

4 0

3 years ago