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kondor19780726 [428]
2 years ago
10

A tune up automotive facility marks up its part by 25% suppose that the facility charges its customers $1.75 for each spark plug

it's sells which is the facility cost for each spark plug?
Mathematics
1 answer:
ss7ja [257]2 years ago
5 0

Answer:

$1.4

Step-by-step explanation:

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A right triangle has one 64degree angle and one 90 degree angle
melamori03 [73]

Answer:

I dont know what your asking, for the other angle? Ig so. Answer: THE OTHER ANGLE IS 26. :)

Step-by-step explanation:

64 + 90 = 154.

All triangles add up to 180 degrees.

180-154 = 26.

7 0
3 years ago
Write a rule for the nth term of the arithmetic sequence described below.
belka [17]

Answer:

an = 115 + (n - 1) (-6)

a25 = - 29

Step-by-step explanation:

We use the definition for the nth term of an arithmetic sequence:

an = a1 + (n - 1) d

a5 = 91 = a1 + (5 - 1) d

91 = a1 + 4 d

a20 = 1 = a1 + (20 - 1) d = a1 + 19 d

1 = a1 + 19 d

now we subtract term by term one expression from the other

90 = 4 d - 19 d

90 = - 15 d

divide both sides by -15 to isolate d

d = 90 / (-15) = -6

Now we can calculate what a1 is using for example:

1 = a1 + 19 d

1 = a1 - 114

add 114 to both sides:

115 = a1

Then our general expression for the sequence is:

an = 115 + (n - 1) (-6)

We can now use it to calculate the value of a25:

a25 = 115 + (24) * (-6) = -29

7 0
2 years ago
ANSWERS TO 7-8 ASAP PLZZZ MARKINV BRAINLIEST
soldier1979 [14.2K]

Answer:

7. B

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Step-by-step explanation:

8 0
3 years ago
What is the image of (-5,3) after a reflection over the x-axis?
Trava [24]

Answer: (-5, -3)

Step-by-step explanation:  In a reflection over the x-axis, the x-value remains the same, the y-value changes to the opposite sign.

5 0
3 years ago
Isosceles triangle XYZ with angle X congruent angle Z? How do you solve for?
Vera_Pavlovna [14]
If X is congruent to Z then they have to be the same number, then you add them and the result you substract it from 180 and that equals Y (remember that the sides of a triangle add up to 180)
8 0
3 years ago
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