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3 years ago

7

John, Jack, and Jill have 159 marbles altogether. John has 2 more marbles than Jack, and if Jill gave 5 marbles to Jack, Jack wo

uld have the same number of marbles as Jill. How many marbles does each of them have?

1 answer:

miskamm [114]3 years ago

7 0

Answer:

someone else tell me to thank you

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Find the inverse please and thank you

Amanda [17]

The inverse $f^{-1}(x)$ is such that

$f\left(f^{-1}(x)\right) = x$

We have

$f\left(f^{-1}(x)\right) = -9\sqrt{f^{-1}(x) - 8} + 5 = x$

Solve for the inverse.

$-9\sqrt{f^{-1}(x)-8} + 5 = x \\\\ -9\sqrt{f^{-1}(x)-8} = x-5 \\\\ \sqrt{f^{-1}(x)-8} = -\dfrac{x-5}9 \\\\ \left(\sqrt{f^{-1}(x)-8}\right)^2 = \left(-\dfrac{x-5}9\right)^2 \\\\ f^{-1}(x) - 8 = \dfrac{(x-5)^2}{81} \\\\ \boxed{f^{-1}(x) = 8 + \dfrac{(x-5)^2}{81}}$

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2 years ago

A family drives an average speed of 60 miles per hour on a trip from Pensacola to Orlando.

Oksi-84 [34.3K]

The family must drive 430 miles to get to Pensacola Colorado

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3 years ago

Kat sold cell phones for $60. She increased the price by 100%. What is the new price of the cell phones?

ki77a [65]

The new price would be $120

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3 years ago

Read 2 more answers

The marked price of

Tju [1.3M]

Answer:

MP = Rs. 1500

SP = Rs. 1230

Step-by-step explanation:

Let the Cost Price (CP) be x

<u>Then Market Price (MP):</u>

MP = x+ 20% = 1.2x

<u>Discounted Selling Price (SP):</u>

SP = MP - 18% = 0.82*1.2x = 0.984x

<u>Since the difference between CP and SP is Rs.20:</u>

x - 0.984x = 20
0.016x = 20
x= 20/0.016
x = 1250

<u>Then:</u>

MP = 1.2*1250= Rs. 1500

and

SP = 1500*0.82 = Rs. 1230

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3 years ago

−10x + 1 + 7x = 37 i need the answers for that

vaieri [72.5K]

-10x+7x=-3x
3x+1=37
(-1) (-1)
3x=36
(Divide by 3 each side)
3x divided by 3= x
36 divided by 3 = 6
Answer: x=6

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3 years ago