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GREYUIT [131]
3 years ago
15

Write and solve a problem for 42 divided 7 in which the quotient is the number of groups

Mathematics
1 answer:
Verdich [7]3 years ago
4 0

Answer:

6

Step-by-step explanation:

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Jason bought a jacket on sale for 50% off the original price and another 25% of the discount price. If the dragon originally cos
anzhelika [568]

Answer: Jason paid $33 for the jacket

Step-by-step explanation: 50% of 88 is 44. Because it’s percent off we subtract. 88-44=44. That’s the discount price. Now we discount the discounted price. Remember that this is NOT a 75% discount, it’s two separate discounts. 25% of 44 is 11. 44-11=33. The final price is $33.

7 0
3 years ago
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I’ll give brainly <br> Solve for x.<br> 27<br> 36<br> x<br> 28<br> X= <br> ?
alexandr402 [8]

Answer:

i dont understan the method you gave me can youbplease ask again showing a different method

6 0
3 years ago
Dibuja estos seis segmentos ab,cd,ef,,gh,ij,klde forma que se cumpla la razón de proporcionalidad siguiente
Brilliant_brown [7]
I believe your answer is 89
5 0
3 years ago
Use the power series for 1 1−x to find a power series representation of f(x) = ln(1−x). What is the radius of convergence? (Note
Viktor [21]

a. Recall that

\displaystyle\int\frac{\mathrm dx}{1-x}=-\ln|1-x|+C

For |x|, we have

\displaystyle\frac1{1-x}=\sum_{n=0}^\infty x^n

By integrating both sides, we get

\displaystyle-\ln(1-x)=C+\sum_{n=0}^\infty\frac{x^{n+1}}{n+1}

If x=0, then

\displaystyle-\ln1=C+\sum_{n=0}^\infty\frac{0^{n+1}}{n+1}\implies 0=C+0\implies C=0

so that

\displaystyle\ln(1-x)=-\sum_{n=0}^\infty\frac{x^{n+1}}{n+1}

We can shift the index to simplify the sum slightly.

\displaystyle\ln(1-x)=-\sum_{n=1}^\infty\frac{x^n}n

b. The power series for x\ln(1-x) can be obtained simply by multiplying both sides of the series above by x.

\displaystyle x\ln(1-x)=-\sum_{n=1}^\infty\frac{x^{n+1}}n

c. We have

\ln2=-\dfrac\ln12=-\ln\left(1-\dfrac12\right)

\displaystyle\implies\ln2=\sum_{n=1}^\infty\frac1{n2^n}

4 0
3 years ago
A person recently read that 84% of cat owners are women. How large a sample should the researcher take if she wishes to be 90% c
Lana71 [14]

Answer:

405

Step-by-step explanation:

To find sample size, use the following equation, where n = sample size, za/2 = the critical value, p = probability of success, q = probability of failure, and E = margin of error.

n=\frac{(z_{\frac{\alpha }{2} })^{2} *p*q  }{E^2}

The values that are given are p = 0.84 and E = 0.03.

You can solve for the critical value which is equal to the z-score of  (1 - confidence level)/2.  Use the calculator function of invNorm to find the z-score.  The value will given with a negative sign, but you can ignore that.

(1 - 0.9) = 0.1/2 = 0.05

invNorm(0.05, 0, 1) = 1.645

You can also solve for q which is 1 - p.  For this problem q = 1 - 0.84 = 0.16

Plug the values into the equation and solve for n.

n =\frac{(1.645)^2*0.84*0.16}{(0.03)^2}\\n= 404.0997333

Round up to the next number, giving you 405.

6 0
3 years ago
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