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NemiM [27]
3 years ago
9

Please I need help asap.

Mathematics
1 answer:
Burka [1]3 years ago
4 0
QR is the median of the trapezoid, so its length is the average of the top and bottom bases. Write that. Say (length of QR)=1/2 of (length of the top + length of the bottom). That gives you a nice simple equation that you can easily solve for 'x'.
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Identify the solutions to the quadratic equation x^2+3-28=0​
umka2103 [35]

Answer: x= -+ 5

Step-by-step explanation:x^{2}  = 25 X = \sqrt{25} \\X = 5    and X = -5

x

7 0
3 years ago
PLZ Answer ASAP!!!
Sliva [168]

Answer:

D. x = 3

Step-by-step explanation:

The only way we could get a line of symmetry through this figure is to use a vertical line.  The only way to get symmetry would be to put the vertical line though the point x = 3.  When we do that, we can see that the end points of the base are both one unit away from the line of symmetry.  The end points I'm talking about are the points at the coordinates (2, 4), and (4, 4)

6 0
3 years ago
An equation in the form ax2+bx+c=0 is solved by the quadratic formula. The solution to the equation is shown below.x=−7±√ "572"
jolli1 [7]

Answer:

B: a = 1, b= 7, c = -2

Step-by-step explanation:

<u>Quadratic Formula</u>

x=\dfrac{-b \pm \sqrt{b^2-4ac} }{2a}\quad\textsf{when}\:ax^2+bx+c=0

Given:

x=\dfrac{-7\pm\sqrt{57}}{2}

Comparing the terms of the given x-value with those of the quadratic formula:

\dfrac{-b \pm \sqrt{b^2-4ac} }{2a}=\dfrac{-7\pm\sqrt{57}}{2}

Therefore:

  • 2a=2 \implies a=1
  • b = 7
  • b^2-4ac=57

Using the found values of a and b to solve for c:

\implies b^2-4ac=57

\implies (7)^2-4(1)c=57

\implies 49-4c=57

\implies -4c=57-49

\implies -4c=8

\implies c=-2

In summary:   a = 1,  b = 7,  c = -2

\implies x^2+7x-2=0

Therefore, <u>option B</u> is the correct solution.

5 0
2 years ago
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Which expression is equivalent to Negative 32 Superscript three-fifths?
pentagon [3]

Answer: A. -8 on edge

explanation: have a good day :)

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4 0
3 years ago
Read 2 more answers
1. List all the factors of 24.​
sveta [45]

Answer:

1,2,3,4,6,8,12,24,

Step-by-step explanation:

7 0
3 years ago
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