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Dafna11 [192]
3 years ago
15

Solve the system by using elementary row operations on the equations. Follow the systematic elimination procedure.

Mathematics
1 answer:
Natali5045456 [20]3 years ago
4 0

Answer:

Step-by-step explanation:

The given equation is expressed as

x1 + 2x2 = -24- - - - - - - - --1

x1 + 7x2 = -11- - - - - - - --2

We would eliminate x1 by subtracting equation 2 from equation 1. It becomes

- 5x2 = - 13

Dividing both sides of the equation by - 5, it becomes

- 5x2/- 5 = - 13/- 5

x2 = 13/5

Substituting x2 = 13/5 into equation 2, it becomes

x1 + 7 × 13/5 = -11

x1 + 91/5 = - 11

x1 = - 11 - 91/5

x1 = - 146/5

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Can someone help me please .
Ymorist [56]

Answer:

D

Step-by-step explanation:

The angle CDG equals 90 degrees and the angle GDE also equals 90 degrees. Supplementary angles are angles that add up to be 180 degrees.

CDG + GDE = 180 degrees

6 0
3 years ago
Find the exponential function that satisfies the given conditions:
swat32

<u>Answer-</u>

<em>The exponential function that satisfies the given conditions is f(t)=67(0.9953)^t</em>

<u>Solution-</u>

This can be represented as exponential decreasing function,

f(t)=a(1 - r)^t

Where,

  • a = starting amount = 67
  • r = rate = 0.47% = 0.0047
  • t = week

Putting the values,

\Rightarrow f(t)=67(1 - 0.0047)^t

\Rightarrow f(t)=67(0.9953)^t

Therefore, the exponential function that satisfies the given conditions is

f(t)=67(0.9953)^t

4 0
3 years ago
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Hamdan scored 8 out of 10 on his history quiz. Which is his score as a fraction in simplest form?
xenn [34]

Answer:

4 over 5

Step-by-step explanation:

The simplist form of 8/10 is 4/5.

6 0
3 years ago
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A used car was purchased in july
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Answer:

Where's the rest of the question?

Step-by-step explanation:

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Complete the function table below for the function F(x) = x2 + 1.
VMariaS [17]
The answer is true, and let me explain this to you like this:
<span>F(x) = 4x - 6
when x = 1, F(x) = 4 * 1 - 6 = -2
when x = 2, F(x) = 4 * 2 - 6 = 2
when x = 3, F(x) = 4 * 3 - 6 = 6
when x = 4, F(x) = 4 * 4 - 6 = 10
</span><span>second row is: -2, 2, 6, 10
</span><span>differences are: 2 - (-2) = 4; 6 - 2 = 4; 10 - 6 = 4
</span>So, the <span>second row is in arithmetic progression.
Hope this is what you were looking for</span>
5 0
3 years ago
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