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IrinaK [193]
3 years ago
12

Use Cramer's rule to solve 4x + 3y = 4, -3x - y = 7. Show your work.

Mathematics
1 answer:
nikklg [1K]3 years ago
3 0
The answer is shown in the picture because it ran afoul of Brainly's "bad word" detector.

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Graph the solution of the inequality on a number line. x − (5 − 3x) ≤ 2x − 1
egoroff_w [7]

Answer:

  • x ≤  2

Step-by-step explanation:

  • x − (5 − 3x) ≤ 2x − 1
  • x - 5 + 3x  ≤  2x - 1
  • 4x - 5 ≤  2x - 1
  • 4x - 2x ≤  5 - 1
  • 2x ≤  4
  • x ≤  2 or x ∈ (- oo, 2]

The graph includes all point to the left from point 2, same point included

4 0
3 years ago
Read 2 more answers
People use water to​ cook, clean, and drink every day. An estimate of 33.9​% of the water used each day is for cooking. If a fam
Lady_Fox [76]

Answer:

23 gallons of water

Step-by-step explanation:

People use water to​ cook, clean, and drink every day. An estimate of 33.9​% of the water used each day is for cooking. If a family uses 67.8 gallons of water a day for cooking​, how many gallons do they use every​ day?

This is calculated as:

33.9 % × 67.8 gallons of water

= 0.339 × 67.8 gallons of water

= 22.9842 gallons of water

Approximately = 23 gallons of water

Therefore, 23 gallons of water are used everyday for cooking

5 0
2 years ago
Which equation can be used to find A, the area of the parallelogram shown? A = 5 × 9 A = 4 × 9 A = 12 × 5 × 9 A = 12 × 4 × 9
Vlada [557]

Answer:

I believe it's A=5 times 9 but since the triangle is special (3-4-5), it could be 12 times 5. Hope this kinda help :)

5 0
3 years ago
Write the point-slope form of the equation for a line that passes through (6,-1) with a slope of 2​
Vika [28.1K]

Answer: y + 1 = 2(x-6)

Step-by-step explanation:

Point Slope Form is y-y₁=m(x-x₁), and all you have to so is substitute in the values that you were given. So, the slope is 2, so you substitute that value in for m. Then, you substitute 6 in for x₁ (because 6 is the x value of the coordinate you were given) and you substitute -1 for y₁ (and it becomes positive because two negatives make a positive)

Hope this was helpful! Please feel free to ask me any questions!

3 0
2 years ago
Read 2 more answers
I really need help with this( 25 points to whoever answers)
masya89 [10]
Look over all of the possible answers.  If any of them contains either M or N or both, the result is irrational.  There's one exception:  N^2 produces a rational number because the radical disappears.
6 0
2 years ago
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