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2 years ago

Plz help me get the answer ASAP

Mathematics

2 answers:

Dimas [21]2 years ago

8 0

9b^3 -11 -10b^3

combine like terms

9b^3 -10b^3 -11

-b^3 -11

gayaneshka [121]2 years ago

4 0

Answer:

$\large\boxed{-b^3-11}$

Step-by-step explanation:

$(9b^3-11)-10b^3\qquad\text{cobine like terms}\\\\=(9b^3-10b^3)-11=-b^3-11$

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Answer:

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Step-by-step explanation:

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2 years ago

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Free_Kalibri [48]

Answer:

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2 years ago

Select from the drop-down menu to correctly identify the property shown. 0.8+(1.2+(−3))=(0.8+1.2)+(−3)

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2 years ago

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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.

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2 years ago

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Answer:

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2 years ago

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