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3 years ago

Jordan wants to solve the following system using the elimination method:

2 answers:

7 0

In the first equation, we have 3y. In the second equation we have y.

If we multiply the second equation by 3, then if we subtract both the equations, we will be able to eliminate y.

If we multiply the second equation by -3, then if we add both the equations, we will be able to eliminate y.

The answer to your question is: 3 and -3.

Marysya12 [62]3 years ago

6 0

Answer:

The answer is -3.

Step-by-step explanation:

I just took the test, and this is the correct answer.

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Simplify the expression to a single numerical value. 3x2^3 x 2x3^2.

matrenka [14]

It’s wants 20 characters lol but the answer is b

4 0

4 years ago

2x(27x+5) Evaluate this please

igomit [66]

Answer:

54x^2 + 10x

Step-by-step explanation:

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3 years ago

EFGH is an isosceles trapezoid. If EH=4x-27 and FG=x+9, find the value of x.<br> PLEASE HELP ASAP!

djyliett [7]

Answer:

If EFGH is an isosceles trapezoid,

EH=4x-27+

FG=x%2B9+

EG=3y%2B19

FH=11y-21

then EH=FG and EG=FH

set up equations:

4x-27=x%2B9 .......solve for x

4x-x=27%2B9

3x=36

x=36%2F3

3y%2B19=11y-21.......solve for y

11%2B19=11y-3y

30=8y

y=30%2F8

y=15%2F4

y=3.75

so,x=12 and y=3.75

you can also check the length of equal sides and equal diagonals:

EH=4%2A12-27+=21

FG=12%2B9+=21

EG=3%283.75%29%2B19=30.25

FH=11%283.75%29-21=30.25x=12

Step-by-step explanation:

5 0

3 years ago

It is solving multi-step inequalities.

kati45 [8]

If you took a better picture I would be able to solve it. Sorry it is pretty blury

3 0

3 years ago

Read 2 more answers

Find the equation of the line using the point-slope formula. Write all the final equations

vivado [14]

Answer:

$y=\frac{1}{2}x+\frac{5}{2}$

Step-by-step explanation:

We are going to find the slope by lining up the points vertically and subtract, then put 2nd difference over first.

Also you could just use $\frac{y_2-y_1}{x_2-x_1}$ . It is the same thing.

( 5 , 5)

-( 1 , 3)

--------------

4 2

So the slope is 2/4 or 1/2 after reducing.

The point-slope form a line is

$y-y_1=m(x-x_1)$ with a point on the line $(x_1,y_1)=(1,3)$ given and with slope $m=\frac{1}{2}$ given.

$y-3=\frac{1}{2}(x-1)$

We are going to solve this for y and simplify what we can because our goal is y=mx+b; this is slope-intercept form. It is called that because it tells us the slope,m, and the y-intercept,b.

Distribute:

$y-3=\frac{1}{2}x-\frac{1}{2}$

Add 3 on both sides:

$y=\frac{1}{2}x-\frac{1}{2}+3$

Simplify:

$y=\frac{1}{2}x+\frac{5}{2}$

4 0

4 years ago