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2 years ago

5

Q4. Find the range, standard deviation, and variance for the following sample data:

1 answer:

AURORKA [14]2 years ago

5 0

Answer:

40 I think but no I think

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What the slope of a line

swat32

Answer:

The slope of a line is a number that measures its "steepness", usually denoted by the letter m. It is the change in y for a unit change in x along the line.

Hope it helps.

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2 years ago

Melanie invests $4,000 into an account offering 4% interest compounded annually. Gina invests $4,000 into a simple interest savi

VashaNatasha [74]

Melanie:
Amount after 5 years = 4000(1 + 0.04)⁵ = $4867

Gina:
Amount after 5 years = 4000 + 5(0.045 x 4000) = $4900

Answer: Gina has the greater balance and her balance is $4900.

4 0

2 years ago

Read 2 more answers

A triangular lot has sides of 215m, 185m, and 125m. Find the measures of the angles at its corners

Vlada [557]

Answer:

The measures of the angles at its corners are $59.1\°,35.4\°,85.5\°$

Step-by-step explanation:

see the attached figure to better understand the problem

step 1

Find the measure of angle A

Applying the law of cosines

$185^{2}= 215^{2}+125^{2}-2(215)(125)cos(A)$

$2(215)(125)cos(A)= 215^{2}+125^{2}-185^{2}$

$cos(A)= [215^{2}+125^{2}-185^{2}]/(2(215)(125))$ $cos(A)=0.513953$

$A=arccos(0.513953)=59.1\°$

step 2

Find the measure of angle B

Applying the law of cosines

$125^{2}= 215^{2}+185^{2}-2(215)(185)cos(B)$

$2(215)(185)cos(B)= 215^{2}+185^{2}-125^{2}$

$cos(B)= [215^{2}+185^{2}-125^{2}]/(2(215)(185))$ $cos(B)=0.81489$

$B=arccos(0.81489)=35.4\°$

step 3

Find the measure of angle C

Applying the law of cosines

$215^{2}= 125^{2}+185^{2}-2(125)(185)cos(C)$

$2(125)(185)cos(C)= 125^{2}+185^{2}-215^{2}$

$cos(C)= [125^{2}+185^{2}-215^{2}]/(2(125)(185))$ $cos(C)=0.0784$

$C=arccos(0.0784)=85.5\°$

3 0

2 years ago

Pls answer will mark brainliest! Ashlyn is having new hardwood flooring installed at the living room kitchen and dining room if

Alexus [3.1K]

Answer:

$580.13

Step-by-step explanation:

<u>The area of the flooring:</u>

A = 1/2*8*(13.5 - 7.5) + 1/2(8 + 4 + 18)(7.5) = 136.5 ft²

<u>Cost of flooring:</u>

136.5*$4.25 = $580.13

4 0

2 years ago

Is perpendicular to . How many 90° angles are formed by the intersection?

xxTIMURxx [149]

4, there are 4 equal angles

3 0

3 years ago