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3 years ago

I need help ASAP!!!!!

1 answer:

7 0

2x-3y=13
x+2y=-4

First times the second problum by 2.
2x-3y=13
2(x+2y=-4)

Your new problum is
2x-3y=13
2x+4y=-8

Now subtract both problums
2x-3y=13
-2x+4y=-8
------------------
-7y=-21

Now divde the -7 on both sides.
-7y=-21
/7 /-7
---------------
y=2

Now you want to substitute the y for the 2 in on of your problums.
x+2(2)=-4

Now mutiplie the 2 by the 2
x+4=-4

Now subtract the 4 on both sides to solve for x.
x+4=-4
-4 -4
--------------
x=-8

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Subtract the following polynomials, then place the answer in the proper location on the grid. Write your answer in descending po

NikAS [45]

Answer:

$-2x^2-2x-7$

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Step-by-step explanation:

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4 years ago

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If you have a balance of 1,000 on your edit card and the interest rate is 17 3/4% a year in order to pay off the $100 in 5 years

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Answer:

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Step-by-step explanation:

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Use the compound amount formula A = P(1 + r)^5. Replacing P with $1,000, r with 0.1775 and t with 5 years, we get the payoff balance

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6 0

3 years ago

Find the equation of the line graphed below. Write the equation in the form y = mx + b and identify m and b m = b =

Alla [95]

ANSWER:

m = -3/4

b = -3

$y=-\frac{3}{4}x-3$

STEP-BY-STEP EXPLANATION:

We have that the equation in its slope-intercept form is the following:

$\begin{gathered} y=mx+b \\ \text{where m is the slope and b is y-intercept} \end{gathered}$

We calculate the slope as follows:

$m=\frac{y_2-y_1}{x_2-x_1}$

To calculate the slope we use the intercepts that are (-4, 0) and (0, -3), we replace:

$m=\frac{-3-0}{0-(-4)}=\frac{-3}{4}=-\frac{3}{4}$

Now, the value of b would be -3, since the y-intercept is (0,-3), therefore, the equation would be:

$y=-\frac{3}{4}x-3$

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1 year ago

ABDE is an isosceles trapezoid. Select all

ioda

Answer:

Step-by-step explanation:

triangles that are the same are congruent

A) no

B) no

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3 0

3 years ago

Please help me I'm failing and I'm so confused!!!!!!!

stiv31 [10]

Answer:

y=9

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Step-by-step explanation:

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3 years ago

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