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rosijanka [135]
4 years ago
8

What is the solution to this system of equations?

Mathematics
1 answer:
Leto [7]4 years ago
6 0
Use the property of substitution to solve:
2 ( x - 2y = 15) ... 2x - 4y = 30
                           2x + 4y = -18

subtract.....     4x = 12  
divide by 4        x =3   place into original equation 3 - 2y = 15
                                                                                   -2y = 12
                                                                                     y = -6
(3, -6)
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MaRussiya [10]

Answer: Choice C) 3.9098 \times 10^8

=========================================

Work Shown:

4.8388 \times 10^8 - 9.29 \times 10^7\\\\4.8388 \times 10^8 - \left(0.929\times10^{1}\right) \times 10^7\\\\4.8388 \times 10^8 - 0.929\times10^{1+7}\\\\4.8388 \times 10^8 - 0.929\times10^8\\\\\left(4.8388-0.929\right) \times 10^8\\\\3.9098 \times 10^8\\\\

-----------------

Side notes:

  • 4.8388 \times 10^8 = 483,880,000 = almost close to 484 million
  • 9.29 \times 10^7 = 92,900,000 = close to 93 million
  • 3.9098 \times 10^8 = 390,980,000 = just a bit under 391 million

7 0
3 years ago
Everyone keeps on ignoring me): please help will mark brainliest):
Anvisha [2.4K]

Answer:

Step-by-step explanation:

They are testing whether you remember the basic 30,60,90 degree triangle side relationship. The ratio of sides for this triangle are 1 opposite the 30 degree angle, square root of three opposite the 60 degree angle and a hypotenuse of 2 opposite the 90 degree angle.

x/2=2/1

x=4/1=4

bottom answer choice

x/4=3^(1/2)/1

x=4(3^(1/2))

third answer choice

4 0
3 years ago
The initial number of views for a certain website was 15. The number of views is growing exponentially at a rate of 22% per week
Oksi-84 [34.3K]

t he number of views expected to be four weeks from now can be calculated using the equation:

F = P ( 1+i)^n

Where F is the future views

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F = 15 ( 1+ 0.22)^4

F = 33 views

8 0
3 years ago
Read 2 more answers
Find the remainder when f(x) is divided by x - k.<br> 9) f(x) = x' - 8x? - 10x² – 24x
OlgaM077 [116]

Answer: Graphing a Quadratic Function

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Step-by-step explanation:

Graphing a Quadratic Function

f(x) ÷ x - k.

9) f(x) = x' - 8x? - 10x² – 24x

6 0
4 years ago
So for this question would it be 1?
Nutka1998 [239]
Yes it would be one because anything with the 0 on the upper corner is 1
7 0
3 years ago
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