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2 years ago

15

Shelley is making a rectangular blanket with dimensions 8 1/2 feet by 5 1/2 feet. She purchases 10 yards of ribbon to put a bord

er around the blanket. Which statement is true?

1 answer:

scoray [572]2 years ago

6 0

Answer:

there are no options listed, but some statements that are true about this question are:

total perimeter = (8.5 x 2) + (5.5 x 2) = 28 feet = 9¹/₃ yards
since Shelley purchased 10 yards of ribbon, it should be enough
after finishing the blanket, Shelley will have 2 feet of ribbon left

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in the figure below trianglePQM and triangleQRP are right triangles. the measure of lineQM is 6 and the measure of lineQP is 8.

Kipish [7]

Answer:

Option 4 is correct. The length of PR is 6.4 units.

Step-by-step explanation:

From the given figure it is noticed that the triangle PQR and triangle MQR.

Let the length of PR be x.

Pythagoras formula

$hypotenuse^2=base^2+perpendicular^2$

Use pythagoras formula for triangle PQM.

$PM^2=QM^2+PQ^2$

$PM^2=(6)^2+(8)^2$

$PM^2=36+64$

$PM^2=100$

$PM=10$

The value of PM is 10. The length of PR is x, so the length of MR is (10-x).

Use pythagoras formula for triangle PQR.

$PQ^2=QR^2+PR^2$

$(8)^2=QR^2+x^2$

$64-x^2=QR^2$ .....(1)

Use pythagoras formula for triangle MQR.

$MQ^2=QR^2+MR^2$

$(6)^2=QR^2+(10-x)^2$

$36=QR^2+x^2-20x+100$

$36-x^2+20x-100=QR^2$ .... (2)

From equation (1) and (2) we get

$36-x^2+20x-100=64-x^2$

$20x-64=64$

$20x=128$

$x=6.4$

Therefore length of PR is 6.4 units and option 4 is correct.

3 0

3 years ago

What is 0.000982 in scientific notation

madam [21]

9.82 x 1/10 = 0.982

9.82 x 1/10 x 1/10 = 0.0982

9.82 x 1/10 x 1/10 x 1/10 = 0.00982

9.82 x 1/10 x 1/10 x 1/10 x 1/10 = 0.000982

Therefore:

9.82 x 10^(-4) = 0.000982

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VMariaS [17]

Answer:

305 miles per hour

Step-by-step explanation:

61 miles per hour

61(5)= 305 miles/ hour

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jolli1 [7]

Answer : H-2
I can sure that's the answer

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Slav-nsk [51]

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