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3 years ago

Solve x2 − 20 = 0. If necessary, round to the nearest hundredth.

Mathematics

1 answer:

kicyunya [14]3 years ago

3 0

Answer:

x is 4.47

Step-by-step explanation:

${ \sf{ {x}^{2} - 20 = 0 }} \\ { \sf{ {x}^{2} = 20}} \\ { \sf{x = \sqrt{20} }} \\ { \sf{x = 4.47}}$

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The perimeter of a square is the product of four and the length of a side. Which of the following function rules could be used t

Sindrei [870]

Perimeter of square is P = 4s.....s = length of 1 side

so ur function rule is : y = 4x

6 0

3 years ago

An article estimates, with 90% confidence, that the proportion of elementary school teachers who are female is 82%. The article

GREYUIT [131]

Answer: (80% , 85%)

Step-by-step explanation:

We know that, confidence interval for population proportion is given by :-

(p-E , p+E)

, where p = sample proportion , E = Margin of error.

Given : Proportion of elementary school teachers who are female = 82%.

The article also states the maximum error of their estimate = 3%.

Then, the 90% confidence interval for the proportion of elementary school teachers who are female will be :

(82%-2% , 82%+3%)

= (80% , 85%)

Hence, the resulting 90% confidence interval for the proportion of elementary school teachers who are female = (80% , 85%)

5 0

3 years ago

there are 3 boys and 2 girls in the Krunch family.Mr.Krunch bought 3 1/2 pounds of candy to divide equally among them.How much c

user100 [1]

In total there are 5 kids so
5÷3.5=1.4
(rounded)

7 0

3 years ago

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Over [174]

Answer:

I would say the answer is $5.00/lb

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6 0

3 years ago

You have a goal of saving to build up a nest egg of $625,357.24, and you are going to make regular deposits to an account that p

Delvig [45]

The monthly deposit required to save up to $625,357.24 (future value) in 40 years at a 7.2% APR is $225.20.

<h3>What is the monthly deposit?</h3>

The monthly deposits are the periodic savings that the investor must make to achieve future value.

The monthly deposit is compounded at the monthly annual percentage rate (APR).

We can compute the required monthly deposits using an online finance calculator as follows:

N (# of periods) = 480 months (40 years x 12)

I/Y (Interest per year) = 7.2%

PV (Present Value) = $0

FV (Future Value) = $625,357.24

Results:

Monthly Deposits (PMT) = $225.20

Sum of all periodic payments = $108,096 ($225.20 x 480)

Total Interest = $517,261.24

Thus, to save $625,357.24 in 40 years, you need to deposit $225.20 monthly.

Learn more about periodic deposits (payments) at brainly.com/question/13031679

#SPJ1

6 0

1 year ago