3 years ago

The first three steps in determining the solution set of the system of equations algebraically are shown.

2 answers:

8 0

Since both are equivalent to y, the equations must be equivalent.
x^2-x-3= -3x+5
x^2+2x-8=0

(x+4)(x-2)=0
x=-4, x=2

Plug the values of x in to either equation
y=-3(-4)+5
y= 12+5
y=17

y= -3(2)+5
y=-6+5
y=-1

Final answer: (-4,17) and (2,-1)

Viktor [21]3 years ago

4 0

Answer:

ayo the answer is C for ED

Step-by-step explanation:

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What is the area of triangle abc below? If necessary, round your answer to two decimal places..... PLEASE PLEASE HELP ME

antiseptic1488 [7]

For a triangle:
$A=\frac{bh}{2}$
$A=\frac{b \times 7.9}{2}$
$b=AD+DC$
Use Pythagorean theorem twice:
$AD^{2}+9.4^{2}=7.9^{2}$
$AD=5.09$

$DC^{2}+23.2^{2}=7.9^{2}$
$DC=21.81$

Thus:
$b=26.9$

And:
$Area=\frac{26.9 \times 7.9}{2}=106.26$

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2 years ago

If a, b, and care digits for which the following holds, then a +b+c=.

Ugo [173]

Answer:

Step-by-step explanation:

8 0

3 years ago

I need help on question b

NeTakaya

Answer:

B=25