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3 years ago

Do you know the answer to this

Mathematics

1 answer:

ludmilkaskok [199]3 years ago

8 0

Answer:

$4x^2y\sqrt[4]{3y}$

Step-by-step explanation:

$\sqrt[4]{768x^8y^5} =$

$= \sqrt[4]{256 \times 3(x^2)^4y^4y}$

$= \sqrt[4]{4^4 \times 3(x^2)^4y^4y}$

$= 4x^2y\sqrt[4]{3y}$

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Chantelle has signed up for hockey. Her parents set a limit of $400 for costs for the season. It costs $250 to sign up plus $5 f

sveticcg [70]

The first step would be to subtract 250 from 400 which is equal to 150. Then you divide 5 into 150 to find the number of times she can do the ice time. So the answer would be 30. I hope this helped

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4 years ago

Read 2 more answers

What figure below has exactly 2 lines of symmetry?

Yuki888 [10]

Answer:

Step-by-step explanation:

A has 8 lines of symmetry, because they're all the same.

B has 4 lines of symmtery because those are all the same

C has only 2 because the vertical lines are symmetrical to each other, but not to the horizontal lines

D has 10 symmetrical lines because they're all the same

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3 years ago

To estimate the proportion of city voters who will vote for the Republican candidate in the election, two students, Manny and Ni

Anvisha [2.4K]

Answer:

Manny's 95% confidence interval would have the larger margin of error.

The smaller the sample size the larger the margin of error. Manny's sample size is smaller than Nina's.

Step-by-step explanation:

Margin of error for the confidence interval of a proportion is given as z[sqrt (p(1-p) ÷ n)]

z is test statistic

p is sample proportion

n is sample size

From the formula above, the relationship between margin of error and sample size is inverse in which decrease in one quantity (sample size) leads to a corresponding increase in the other quantity (margin of error)

Manny's sample size is 50 while Nina's is 100.

Therefore, Manny's 95% confidence interval would have the larger margin of error because her sample size is smaller.

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4 years ago

A manufacturer of industrial solvent guarantees its customers that each drum of solvent they ship out contains at least 100 lbs

Hitman42 [59]

Answer:

Step-by-step explanation:

Let X be the solvent present

Then given that the manufacturer of industrial solvent guarantees its customers that each drum of solvent they ship out contains at least 100 lbs of solvent.

X is N(101.3, 3.68)

a) $P(X>100) = P(Z>\frac{100-101.3}{3.68} =P(Z>-0.35)\\=0.6368$

Probability = 0.6368

b) $P(X>100)= 0.97$ means Z score = 1.88

X=100+1.88(s) =101.3

s=1.3/1.88=0.6914

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4 years ago

The length of the longer side of rectangle $r$ is $10$ percent more than the length of a side of square $s.$ the length of the s

liraira [26]

Let
x-------------> length of the side of a square

[area of a square]=x*x------> x²

[area of rectangle]=[shorter side]*[longer side]
[shorter side]=0.90 x-------> (is 10% percent less than the length of a side of square)
[longer side]=1.10x-------> (is 10% percent more than the length of a side of square

[area of rectangle]=(1.10x)*(0.90x)-----> 0.99x²

[the ratio of the area of rectangle to the area of square]=0.99x²/x²=0.99

the answer is
the ratio of the area of rectangle to the area of square is 0.99

7 0

3 years ago