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Mumz [18]
3 years ago
15

A pair of shoes that originally cost $47.50 is on sale for 25% off. What is the sale price? $40.52, $59.38, $35.63, $11.88

Mathematics
2 answers:
Anna71 [15]3 years ago
7 0

Answer:

35.63

Step-by-step explanation:

statuscvo [17]3 years ago
3 0

Answer:

35.63

Step-by-step explanation:

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If a and b are two angles in standard position in Quadrant I, find cos(a-b) for the given function values. sin a=3/5and cos b=12
goldfiish [28.3K]

The identity in question is

cos(a - b) = cos(a) cos(b) + sin(a) sin(b)

so that

cos(a - b) = 12/37 cos(a) + 3/5 sin(b)

Since both a and b lie in the first quadrant, both cos(a) and sin(b) will be positive. Then it follows from the Pythagorean identity,

cos²(x) + sin²(x) = 1,

that

cos(a) = √(1 - sin²(a)) = 4/5

and

sin(b) = √(1 - cos²(b)) = 35/37

So,

cos(a - b) = 12/37 • 4/5 + 3/5 • 35/37 = 153/185

7 0
2 years ago
Nadia solved the equation 4x-4=20!4x=16 x=4what error did she make
irakobra [83]
4(4) -4 = 16-4 = 12
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8 0
3 years ago
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which car can travel farther on 1 gallon of gas if blue car travels 18 2/5 miles using 0.8 gallons of gas and red car travels 17
Black_prince [1.1K]

Divide the miles by the gallons used for each car to find the miles per gallon, then compare them:

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Red car: 17 2/5 miles / 0.7 gallons = 24.86 miles per gallon.

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8 0
3 years ago
Find the value of the trigonometric ratio. Simplify the ratio of possible.(Hint:you may need to use pythagorean theorem first)
sergey [27]
Your answer will be 17/15

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H²=p²+b²
Where p is bc
And b is ac
Then keep the value and solve it and you will get h as 17
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If you didn’t understand please tell me
4 0
3 years ago
How do you find the equation of a parabola given two x intercepts
Ivahew [28]
Let's assume that the parabola has the following intersections with the x axis:
 x1 = p
 x2 = q
 To find the equation of the parabola, we write the following product of binomials:
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 Where,
 p, q: intersections with the x axis.
 When developing the product of binomials, we obtain the equation of the parabola.
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(x-p) (x-q) = 0
4 0
3 years ago
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