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3 years ago

Estimate 7192 divided by 9

Mathematics

2 answers:

Katyanochek1 [597]3 years ago

8 0

So you would divide that and get 799.1 repeating
. If you round that you should get 800.

lianna [129]3 years ago

7 0

Since 9 times 8 is 72, and 7200 is close to that number, a proper estimate would be 800.

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Cate and Elena were playing a card game. The stack of cards in the

Colt1911 [192]

Answer:

Step-by-step explanation:

So you first start off with 24, then you add 8 cards and take away 12 + 9 cards, making the equation:

24 + 8 - (12 + 9)

= 32 - 21

= 11

3 0

3 years ago

A data set includes data from student evaluations of courses. The summary statistics are n, , s. Use a significance level to t

Andru [333]

Complete question :

A data set includes data from student evaluations of courses. The summary statistics are nequals92, x overbarequals4.09, sequals0.55. Use a 0.10 significance level to test the claim that the population of student course evaluations has a mean equal to 4.25. Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim.

Answer:

H0 : μ = 4.25

H1 : μ < 4.25

T = - 2.79

Pvalue =0.0026354

we conclude that there is enough evidence to conclude that population mean is different from 4.25 at 10%

Step-by-step explanation:

Given :

n = 92, xbar = 4.09, s = 0.55 ; μ = 4.25

H0 : μ = 4.25

H1 : μ < 4.25

The test statistic :

T = (xbar - μ) ÷ s / √n

T = (4.09 - 4.25) ÷ 0.55/√92

T = - 0.16 / 0.0573414

T = - 2.79

The Pvalue can be obtained from the test statistic, using the Pvalue calculator

Pvalue : (Z < - 2.79) = 0.0026354

Pvalue < α ; Hence, we reject the Null

Thus, we conclude that there is enough evidence to conclude that population mean is different from 4.25 at 10%

4 0

3 years ago

The sales of homes in a new development have been increasing. In January, 5 homes were sold, in February, 12 homes were sold. In

Volgvan

The number rule is plus seven

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3 years ago

Read 2 more answers

Joni earned $0.625 per day for two days as interest on her $1,000.00 investment. What percent interest did she earn in total? Gi

Kitty [74]

Joni’s total interest earned is 0.125% of her investment.

<u>Solution:</u>

Given that

Interest earned by Joni per day = $0.625

Investment done by Joni = $1000

Duration of earning interest = 2 days

Total interest earned = interest earned by Joni $\times$ duration of interest earned.

= 0.625 $\times$ 2 = $1.25

$\text { Percentage of interest earned }=\frac{\text {total interest earned}}{\text {investment done}} \times 100$

$=\frac{125}{1000} \times 100=0.125 \%$

So Joni’s total interest earned is 0.125% of her investment.

4 0

3 years ago

Let H represent the height of the Colossus roller coaster. Explain why H - 13= 184 and h-34=163 are equivalent equations. Then e

Liula [17]

Explanation:

The two equations are $H-13=184$ and $H-34=163$

To determine why the two equations are equivalent, let us solve the equation.

Consider solving the equation $H-13=184$ , we get,

Adding 13 on both sides, we get,

$H=197$

Consider solving the equation $H-34=163$ , we get,

Adding 37 on both sides, we get,

$H=197$

Thus, when solving both the equations, the value of H is equal.

Since, the value of H is equal, the equations $H-13=184$ and $H-34=163$ are equivalent equations.

The meaning of the solution:

A value of a variable which makes the equation true is called a solution.

Here the value of the variable H is 197. Let us substitute the value in the equations $H-13=184$ and $H-34=163$ to determine whether it makes the equation true.

Let us substitute $H=197$ in $H-13=184$ , we get,

$197-13=187$

$187=187$

Hence, $H=197$ is true solution.

Also, let us substitute $H=197$ in $H-34=163$ , we get,

$197-34=163$

$187=187$

Hence, $H=197$ is true solution.

3 0

4 years ago