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docker41 [41]
3 years ago
11

-5x+2y=9 y=7x I need help with in the next 10 minutes I will give brainiest!!!!!

Mathematics
1 answer:
Yanka [14]3 years ago
7 0

Answer:

x = 1 and y = 7

Step-by-step explanation:

First, you substitute the y into the first equation

-5x+2(7x)=9

-5x+14x=9

9x=9

x=1

Then put the x into the equation to find y

This is if you substitute using the second equation

y=7(1)

y=7

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3 0
3 years ago
Need help for important quiz. I need the answers to all the blanks please!!!
Mekhanik [1.2K]

Answer:

$15.25=1h+2p+3s

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$10.25=1h+2p+3s

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Step-by-step explanation:

Just solve each one at a time :D

Gl on your quiz!

5 0
3 years ago
What is the solution to the equation 1/square root of 8 = 4^(m + 2)?
Digiron [165]
Take the log (base 4) of both sides of the equation.
\log_{4}(\frac{1}{\sqrt{8}}) = m + 2
\frac{-1}{2} \log_{4}(4^{\frac{3}{2}})-2 = m
-2 \frac{3}{4}= m

The appropriate choice is ...
  m = -11/4
8 0
3 years ago
Read 2 more answers
Which expression is equivalent to StartRoot 128 x Superscript 8 Baseline y cubed z Superscript 9 Baseline EndRoot? Assume y grea
zepelin [54]

The expression √(128x⁸y³z⁹) is equivalent to the expression 8x⁴yz⁴ √(2yz). Then the correct option is C.

The missing options are given below.

<h3>What is an equivalent expression?</h3>

The equivalent is the expressions that are in different forms but are equal to the same value.

The expression is given below.

⇒ √(128x⁸y³z⁹)

Then the expression is given below.

⇒ √[(64 × 2)(x⁴)²(y²y)(z⁸z)]

⇒ 8x⁴yz⁴ √(2yz)

Then the correct option is C.

More about the equivalent link is given below.

brainly.com/question/889935

#SPJ1

4 0
2 years ago
Thank you thank you thank you thank you thank you thank you thank
GuDViN [60]

Answer: yuh

Step-by-step explanation:

yuh

6 0
3 years ago
Read 2 more answers
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