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professor190 [17]
3 years ago
15

Solve the system. x + y = 8 2x2 – y = –5 Add the equations

Mathematics
2 answers:
mixas84 [53]3 years ago
6 0

Answer: Solve the system. x + y = 8 2x2 – y = –5 Add the equations, then choose the result. 3x2 = –13 3x2 = 3 2x2… Get the answers you need, now!

2 answers

 

·

 

Top answer:  

2x^2 - y = -5 x + y = 8----------------add2x^2 + x = 3 <==** 2x^2 and x cannot be add

Step-by-step explanation: HAVE A GREAT DAY

Leya [2.2K]3 years ago
5 0

Answer:

X+Y = 8

2X-Y =-5

(X+2X+Y-Y)=8-5

3X=3

X=1

Y:

1+Y=8

Y=8-1

Y=7

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Translate into Algebra.
S_A_V [24]

Answer: $D - $R

Step-by-step explanation:

Given the following :

Amount Jen had initially = $D

Amount had after purchasing video = $R

Amount she paid for the video =?

Amount she paid for video = ( Initial amount had before purchasing video - amount had after purchasing video)

Hence,

Amount paid for video = $D - $R

7 0
3 years ago
Please solve. Evaluate the function.
Yuliya22 [10]

Answer:

(g o f)(x) = \sqrt{-510} (not simplified)

Step-by-step explanation:

(g o f)(x) = g(f(x))

g(x) = \sqrt{3x}  f(x) = x^{3} + 9x

g(f(-5)) = g((-5)^{3} + 9(-5) = (-125) + (-45) = -170

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3 0
3 years ago
Please help me factor this!! Thanks!
Goryan [66]
We need to find two numbers that multiply to 24 (last coefficient) and add to 10 (middle coefficient). Through trial and error, the two values are 6 and 4

6 + 4 = 10
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So we can break up the 10ab into 6ab+4ab and then use factor by grouping

a^2 + 10ab + 24b^2
a^2 + 6ab + 4ab + 24b^2
(a^2+6ab) + (4ab+24b^2)
a(a+6b) + 4b(a+6b)
(a+4b)(a+6b)

Therefore, the original expression factors completely to (a+4b)(a+6b)
5 0
3 years ago
A recipe uses 5 cups of flour for every 2 cups of sugar. How much sugar is used for 1 cup of flour? Exact answers only
Aloiza [94]

Answer:

0.4

Step-by-step explanation:

Hopefully this can help

7 0
3 years ago
The sum of two numbers is 50. One number is 10 less than three times the other number. What are the two numbers?
andrew-mc [135]
Ok so its a guessing game

I say its 40+10 because

40-10{one # is 10 less than)=30
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so 40+10=50
6 0
3 years ago
Read 2 more answers
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