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Anna [14]
3 years ago
15

If pq=7 and qr=28 then what is pr

Mathematics
2 answers:
polet [3.4K]3 years ago
8 0
If pq=7 and qr=28 then,
p=7/q and r=28/q

pr=7/q×28/q
pr=196/q^2

Hope it helps you
Flura [38]3 years ago
3 0

Answer:

pr = 4.

Step-by-step explanation:

If pq=7 and qr=28 then what is pr?

qr / pq = r/p = 28/7 = 4.

prq^2 = 7 * 28 = 196

196 = 2 * 2 * 7 * 7

q^2 is a perfect square so looks like it could be 49 then pr would be  4.

Since r/p = 4 then r = 4 and p = 1 would  suit the equalities.

Checking with the given information: pq = 1 *7 = 7 and qr = 7*4 = 28 so we have the right answer.

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(-6x3-4x2-8)+(x3-x2-9x+4) add together and simply
Aleksandr [31]

Answer:

-5x³ -5x² -9x - 4

Step-by-step explanation:

(-6x³-4x²-8)+(x³-x²-9x+4)

Add the like terms.

-6x³ and x³ are like terms. -6x³ + x³ = -5x³

-4x² and -x² are like terms. -4x² - x² = -5x²

-8 and 4 are like terms. -8 + 4 = -4

-6x³-4x²-8 +x³-x²-9x+4 = -5x³ -5x² -9x - 4

6 0
3 years ago
What are 3 consecutive numbers that is the sum of -27.please be right.use odd numbers
qaws [65]
You're asking for three consecutive odd numbers, then
Let, the numbers = x, x+2, x+4

It is given that, x + x+2+ x+4 = -27
3x + 6 = -27
3x = -27 - 6
x = -33/3
x = -11
Then, x+2 = -9 & x+4 = -7

In short, Your Numbers would be: -7, -9,-11

Hope this helps!
6 0
3 years ago
To start a taco food truck service, a woman borrowed $7,500. If the loan was for 5 years and the amount of interest was $3187.50
Inga [223]

Answer:

The interest rate was 42.5%.

Step-by-step explanation:

8 0
3 years ago
PLZ HELP 13 POINTS!!!!!!!!!!
pogonyaev
Input values must have exactly one output value in order for the function to remain a function.
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8 0
3 years ago
Read 2 more answers
Solve for 1/3(x+2)=2/3x+4
Norma-Jean [14]

Answer:

Step-by-step explanation:

Let's solve your equation step-by-step.

1

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3 years ago
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