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nignag [31]
3 years ago
8

If r+s/r =3 and t+r/t =5, what is the value of s/t ? (A) 12 (B) 35 (C) 4 (D) 8 (E) 16

Mathematics
1 answer:
Leno4ka [110]3 years ago
3 0

Answer:

The answer of this question is (D) 8

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Determine the value of a 10 year old car that costs $24,500 new and depreciates by 9% every year
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First, we need to know how much the car depreciates each year. Multiply the price of the car by the percentage.

We can turn 9% into a decimal by moving the decimal point two places to the right.

9% = .09

24500 * .09 = 2205

Multiply the product by the amount of years you want to predict the price at.

2205 * 10 = 22050

Subtract that from the original price of the car.

24500 - 22050 = 2450

The value of a 10 year old car that costs $24500 and depreciates 9% every year will cost $2450.
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To finance her community college education, Sarah takes out a loan for $3400. After a year Sarah decides to pay off the interest
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Determine the solution set of (2x - 5)2 = 11.
zhenek [66]
I think what you meant was

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Square root both sides of (1), i.e.

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From (2), we have

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By adding 5 to both sides in (3), we have

2x = 5 ± √11 -- (4)

Divide both sides of (4) by 2, and we obtain

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x = (5 + √11)/2, (5 - √11)/2 ...Ans.
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Two cities are 45 miles apart. Two trains, with speeds of 70 mph and 60 mph, leave the two cities at the same time so that one i
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The perimeter of triangle RXA is 24. If RX = 4 and RA = 11, find XP and PA. A. XP = 1.5, PA = 7.5 B. XP = 2.4, PA = 6.6 C. XP =
mart [117]
The picture in the attached figure

we know that
RX+RA+XA=24
XA=24-RA-RX------> XA=24-11-4----> XA=9
XA=XP+PA
so
XP+PA=9------> XP=9-PA-----> equation 1

RX/XP=RA/PA

11*XP=4*PA-----> equation 2
substitute equation 1 in equation 2
11*[9-PA]=4*PA-----> 99-11*PA=4*PA----> 15*PA=99----> PA=99/15
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the answer is the option
<span>B. XP = 2.4, PA = 6.6 </span>

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