How many four digit numbers can be formed using the digits 7, 6, 5 and 2 if no

Mathematics

1 answer:

Ksju [112]3 years ago

5 0

Answer:

Step-by-step explanation:

4! = 4*3*2*1 = 24

24 numbers can be formed

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I ate a bunch of cookies. I had 10 cookies and now I have 6. What was the percent decrease?

kirza4 [7]

Answer:

6/10 - 1 = -0.4 = -40%

A decrease of 40%.

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3 years ago

the half-life of strontium-90 is approximately 29 years. how much of a 500 g sample of strontium-90 will remain after 58 years

Yuliya22 [10]

Answer: 125 g

<u>Step-by-step explanation:</u>

$A = P_o\cdot e^{kt}\\\\\text{First, use the given information to find k:}\\\\\bullet A=\dfrac{1}{2}P_o\\\\\bullet k = unknown\\\\\bullet t=29\text{ years}\\\\\dfrac{1}{2}P_o=P_o\cdot e^{k(29)}\\\\\\\dfrac{1}{2}=e^{k(29)}\qquad divided\ both\ sides\ by\ P_o\\\\\\ln\bigg(\dfrac{1}{2}\bigg)=ln\bigg(e^{k(29)}\bigg)\qquad applied\ ln\ to\ both\ sides\\\\\\ln\bigg(\dfrac{1}{2}\bigg)=29k\qquad simplified-ln\ and\ e\ cancel\ out\\\\\\\dfrac{ln\bigg(\dfrac{1}{2}\bigg)}{29}=k\qquad divided\ 29\ from\ both\ sides\\\\\\-0.0239=k$

$\text{Now, use the following in the equation to solve for A:}\\\\\bullet A=unknown\\\bullet P_o=500\\\bullet k=-0.0239\\\bullet t=58\text{ years}\\\\A=500\cdot e^{(-0.0239)(58)}\\\\.\quad=500\cdot e^{-1.386}\\\\.\quad=125$

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3 years ago

(08.05 lc) of a semicircle was rotated about the y-axis, like the one shown below, what would be the resulting three-dimensional

PIT_PIT [208]

It would be a sphere

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3 years ago

Read 2 more answers

If g(x) = x3 - 5 and h(x) = 2x - 2, then h(g(-2))= ?

mixas84 [53]

Please, write "x^3" for "the cube of x," not "x3." "^" denotes exponentiation.

Then you have g(x) = x^3 - 5 and (I assume) h(x) = 2x - 2.

1) evaluate g(x) at x = -2: g(-2) = (-2)^3 - 5 = -8 - 5 = -13

2) let the input to h(x) be -13: h(-13) = 2(-13) - 2 = -28 (answer)

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3 years ago

8x = 32<br> Last question please help

Alexandra [31]

Answer:

x equals 4.

Step-by-step explanation:

32 divided by 8 equals 4. I'm not sure there's any other evidence lol :)

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3 years ago