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Mice21 [21]
3 years ago
11

What value of x makes the equation true? 4x - 3= -9 + 7x Question 2 options: 2 -2 12 −12

Mathematics
1 answer:
ale4655 [162]3 years ago
3 0
4x2 - 3 = 5
-9 + 7x2 = 5

2 is the correct answer
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In figure 2, find x if the perimeter is 4. Does each answer make sense? Why or why not?
stealth61 [152]

The value of x is equal to 1.5.

It is required to find x.

<h3>What is quadratic equation?</h3>

Any equation containing one term in which the unknown is squared and no term in which it is raised to a higher power. The quadratic formula to solve a quadratic equation ax2 + bx + c = 0 is x = [-b ± √(b2 - 4ac)]/2a.

Given that:

So for the triangle, the perimeter would be:

(x^{2} +x+3)+(x^{2} +2x-2)+(x^{2} +2x-9)=4

By solving in above equation, we get

(x^{2} +x+3)+(x^{2} +2x-2)+(x^{2} +2x-9)=4\\\\\\\2x^{2}+5x-8=4\\\\2x^{2}+5x-12=0\\\\2(x + 4)(x - 1.5)=0\\\\ x=-4\\\\ x=1.5

So, we take x= 1.5 and neglect -4 because we can't take negative roots of the quadratic equation.

Hence, the value of x is equal to 1.5.

Learn more about quadratic equation here:

brainly.com/question/17177510

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8 0
2 years ago
The length of a football playing field is 100 yards between the opposing goal lines. What is the length of the football field in
sweet-ann [11.9K]

Answer:

33.3

Step-by-step explanation:

100 divided by 3

3 0
3 years ago
What is the solution to 4x-14+3x=161
Pachacha [2.7K]

Answer:

x = 175/7

Step-by-step explanation:

Combining the like terms in 4x-14+3x=161, we get

7x = 175, and so:

x = 175/7

6 0
4 years ago
Jimmy thought he had purchased 7 folders, but purchased 6. What was his percent error?
OleMash [197]

Answer:

Step-by-step explanation:

Percent Error = | Actual Yield-Theoretical/ Theoretical Yield | *100%

Error= |-1/7|*100%= 14.29%

4 0
3 years ago
Eight minus two times a number is equal to the number plus 17. Find the number.
navik [9.2K]

the answer is 8-2n=n+17   n=-3

3 0
3 years ago
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