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zysi [14]
3 years ago
6

☺️☺️can anyone do a step by step explanation. You dont have too but if possible. Thanks

Mathematics
2 answers:
Mandarinka [93]3 years ago
7 0
QR and QS are perpendicular bisectors of the isosceles triangle XYX
so QR= QS
1/2 x + 2 = x - 10
1/2 x - x = - 10 - 2
-1/2x = - 12
      x = (-12) * (-2/1)
      x = 24

QS = 24 - 10
QS = 14

Answer
C . 14
goldenfox [79]3 years ago
5 0
Since the triangle above is isosceles, its legs are congruent. If RS was drawn, we can see visually how QR and QS are congruent also. QR and QS have the same slope, so they would travel the same distance before intersecting. Therefore, we can set up an equation where the value of QR equals the value of QS.

QR = QS
1/2x + 2 = x - 10
multiply both sides to eliminate the denominator
x + 4 = 2x - 20
24 = x
subtract x from both sides to get all "x" terms on one side
add 20 to both sides to get all non-variable terms on one side.
QS = 24 - 10
Substitute the value of x back into the value of QS
QS = 14
Combine all like terms.

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Whole numbers are also integers. There are other integers which are the opposites of the whole numbers (−1, −2, −3, ...). These negative numbers lie to the left of 0 on the number line. Integers are the whole numbers and their opposites.

4 0
3 years ago
Victoria is taking swimming lessons. Her swimming instructor charges $29.50 per hour. If Victoria has swimming lessons for 4.5 h
jarptica [38.1K]

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123.75

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7 0
3 years ago
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Cheeseburgers are two for<br> $5.00. How much would 5<br> cheeseburgers cost?
stiv31 [10]

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6 0
3 years ago
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30 points
igomit [66]
Since the rate of descent is a constant this is a linear equation and can be expressed as:

h=vt+b, where h=feet, v=slope or rate, b=y-intercept (y value when x=0 which is the initial height)

h=-2t+b, using the point (3,67) we can solve for b, or the initial height

67=-2(3)+b

67=-6+b

73=b  so the initial height was 73 ft and the height equation is then:

h(t)=67-2t so when t=8 you have:

h(8)=67-2(8)

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8 0
3 years ago
Percy solved the equation x2 7x 12 = 12. his work is shown below. is percy correct? explain. 1. (x 3)(x 4) = 12 2. x 3 = 12 or x
stepladder [879]

Percy solved the equation by expanding the expression on the left-hand side, and this is incorrect

<h3>How to determine the true solution?</h3>

The equation is given as:

x^2 + 7x + 12 = 12

The first step in solving the equation is to equate the equation to 0.

i.e.

x^2 + 7x + 12 - 12 = 0

This given

x^2 + 7x = 0

From the question, Percy solved the equation by expanding the expression on the left-hand side

Hence, Percy's solution is incorrect

Read more about equations at:

brainly.com/question/2972832

#SPJ4

6 0
2 years ago
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