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maksim [4K]
3 years ago
10

Which ordered pair is a solution of x−5y<7?

Mathematics
2 answers:
Aleonysh [2.5K]3 years ago
8 0

Answer:

(-3,2)

Step-by-step explanation:

Svetllana [295]3 years ago
3 0

Answer:

3,2 i think sorry if im wrong

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You saved $35 to buy two books. The first book cost an unknown amount and the second book cost $24. If you don't have any money
vovangra [49]

Answer:

$11 Dollar

Step-by-step explanation:

35 - 24 = 11

5 0
2 years ago
Someo ne pllllzzzz help me asap i will give brain thingy and 20 points!
Lelu [443]

Part 1) Finding the inverse

Let x = r and y = H(r)

We have the equation y = 6240(1 + x/100)^t which is the same as saying y = 6240(1 + 0.01x)^t since 1/100 = 0.01

From here, swap x and y to get the equation x = 6240(1+0.01y)^t

Let's solve for y

x = 6240(1+0.01y)^t

6240(1+0.01y)^t = x

(1+0.01y)^t = x/6240

1+0.01y = (x/6240)^(1/t)

0.01y = (x/6240)^(1/t)-1

100*0.01y = 100*((x/6240)^(1/t)-1)

y = 100*((x/6240)^(1/t)-1)

y = 100*(x/6240)^(1/t) - 100

This becomes r = 100*(H/6240)^(1/t) - 100 after we replace y with r and x with H. Note the r and H swapped places, just like x and y did. Earlier we had H isolated on the left, but now r is isolated on the left.

We could write r(H) = 100*(H/6240)^(1/t) - 100 to mean the same thing.

So what exactly does this inverse function do? Well the original function tells us the number of households for any given growth rate, which is r.

The inverse function swaps things around to allow us to find the growth rate if we know how many households there are. We're working backwards. In both cases, t is held to some constant fixed value.

===========================================================

Part 2) Finding the growth rate if the number of households is 7800 after 3 years.

We're going to plug in H = 7800 and t = 3 into the inverse function we found to determine the value of r, or r(H)

r(H) = 100*(H/6240)^(1/t) - 100

r(7800) = 100*(7800/6240)^(1/3) - 100

r(7800) = 7.72173450159419

You'll need your calculator to get this approximate value. After rounding to two decimal places, we get r(7800) = 7.72

Since r = 7.72, this means the growth rate is 7.72%

4 0
2 years ago
I need help with this pleasee
Setler [38]
76+20x
factor out 4
4 (19+5x)

so one possible dimensions of the rectangle is 4 by 19+5x
4 0
3 years ago
Read 2 more answers
PLEASE HELP ME!!! Its easy!
timurjin [86]
-2.1, should be right
6 0
2 years ago
Read 2 more answers
Classify the quotient as positive ,negative,zero undefined -15 divided by (-5)
natka813 [3]
Positive

step by step explanation
5 0
3 years ago
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