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Olegator [25]
2 years ago
7

2x-9y=26 6x-2y=-22 solve by substitution step by step please

Mathematics
1 answer:
lord [1]2 years ago
3 0

Answer:

y=-8

x=-23

Step-by-step explanation:

see attached document

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sattari [20]
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4 years ago
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The sum of four consecutive whole numbers is 230.Find the numbers.
taurus [48]

<span>х is the first number
(x + 1) is the second number
(x + 2) is the third number
(x + 3) is the fourth number
</span>
x + x+1 + x+2 + x+3 = 230
4x + 6 = 230
4x = 230 - 6
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Answer: 56, 57, 58, 59.
7 0
3 years ago
A rocket is launched into the air and follows the path, h (t) = -3 * t^2 + 12 * t
DanielleElmas [232]

check the picture below.


so, the rocket will come back to the ground when h(t) = 0, thus


\bf h(t)=-3t^2+12t\implies \stackrel{h(t)}{0}=-3t^2+12t\implies 0=-3t(t-4)\\\\[-0.35em]~\dotfill\\\\0=-3t\implies 0=t\impliedby \textit{0 seconds when it took off from the ground}\\\\[-0.35em]~\dotfill\\\\0=t-4\implies 4=t\impliedby \textit{4 seconds later, it came back down}

8 0
4 years ago
I need help on these questions
Kay [80]
1.) 10c - 12 = -2
-2C is the temperature in Tallahassee

2.) 48 kilometers divided the average of 3.2 Km
48÷3.2=15
15 is the value of D

3.) You seem to have 3 =D

4.) I'm pretty sure you just add \frac{1}{4} +  \frac{1}{3} =  \frac{7}{12}
7/12 is your answer

----------------------------------------------------------------------------------------------------------------
Thank You! Have a great day =D
and please correct me if wrong =D
7 0
3 years ago
the sum of three and a number is added to twenty four I need to translate each verbal expression in to a algebraic expression ​
Ede4ka [16]

Answer:

(3+x)+24

Step-by-step explanation:

3 0
3 years ago
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