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melisa1 [442]
3 years ago
8

Solve each system by elimination: 10x+8y= -18 8x+8y= -24

Mathematics
2 answers:
diamong [38]3 years ago
7 0

Answer:

Step-by-step explanation:

10x + 8y = -18

-8x - 8y = 24

2x = 6

x = 3

8(3) + 8y = -24

24 + 8y = -24

8y = -48

y = -6

(3, -6)

ruslelena [56]3 years ago
7 0
(3,-6) would be the answer to this question
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On a cold night in Ohio, the temperature was –7 degrees Fahrenheit. By morning the next day, the temperature increased 15 degree
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Answer:

37 degrees Fahrenheit

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4 0
3 years ago
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3y+10x-54=0 5y-2x-34=0<br><br> x=<br><br> y=
Blababa [14]
<h3>Answer:</h3><h2>x = 3 and y = 8 → (3, 8)</h2><h3>Step-by-step explanation:</h3>

\left\{\begin{array}{ccc}3y+10x-54=0&\text{add 54 to both sides}\\5y-2x-34=0&\text{add 34 to both sides}\end{array}\right\\\left\{\begin{array}{ccc}3y+10x=54\\5y-2x=34&\text{multiply both sides by 5}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}3y+10x=54\\25y-10x=170\end{array}\right}\ \ \ \ |\text{add both sides of the equations}\\.\ \ \ \ \ 28y=224\qquad\text{divide both sides by 28}\\.\ \ \ \ \ \ \ \dfrac{28y}{28}=\dfrac{224}{28}\\.\ \ \ \ \ \ \ \boxed{y=8}

\text{put the value of y to the first equation}\\\\3(8)+10x=54\\24+10x=54\qquad\text{subtract 24 from both sides}\\24-24+10x=54-24\\10x=30\qquad\text{divide both sides by 10}\\\dfrac{10x}{10}=\dfrac{30}{10}\\\boxed{x=3}

8 0
3 years ago
Kelby has several she has B birds C cat and F frogs the expression B+(C+F) represents the total number of pets Kelley has what C
zaharov [31]

Answer:

The total number of Cats and Frogs

Step-by-step explanation:

Number of Birds Owned = B

Number of Cats = C

Number of Frogs =F

The expression that represents the total number of pets owned by Kelby

=B+(C+F)

NOTE: SUM/ADDITION = +

Therefore:

The expression C+F represents the total number of Cats and Frogs owned by Kelby.

5 0
4 years ago
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