3 years ago

What option is correct: A or B

Mathematics

1 answer:

Yuliya22 [10]3 years ago

5 0

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Find the product? (n - 4)(3n+7)

vampirchik [111]

Answer:

3n^2 - 5n - 28

Step-by-step explanation:

(n - 4)(3n + 7)

3n^2 + 7n - 12n - 28

3n^2 - 5n - 28

hope this hepls!!!

6 0

3 years ago

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The ratio of the perimeter of two similar polygons is 5:7. The area of the smaller polygon is 30 sq. cm. Find the area of the la

Debora [2.8K]

Answer:

42sq

Step-by-step explanation:

5:7

30 sq: x sq

30/5=6 sq for 1 of the ratio

6*7=42 sq for 7 of the ratio

4 0

3 years ago

Describe the error in the work shown.

mihalych1998 [28]

The error was in second step.

3√(y^3)^4 = y^4

(Cube root cancels cube and not power 4)

The answer should be:

xy^4/4

//Hope it helps.

4 0

3 years ago

Imagine your playing a game, you are currently level 5 and it takes 55 EXP to level up to level 6, each battle you fight you gai

sattari [20]

Step-by-step explanation:

55 / 3 = 18.333.

Since it is a decimal, we round up to the nearest whole number.

It will take at least 19 battles to level up.

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3 years ago

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What is the perimeter of the trapezoid with vertices Q(8, 8), R(14, 16), S(20, 16), and T(22, 8)? Round to the nearest hundredth

andre [41]

Answer:

The perimeter is 38.25 units

Step-by-step explanation:

The perimeter of the tra-pezoid is the distance around it.

The length of the bases can be found using the absolute value method.

|RS|=|20-14|=6 units.

|TQ|=|22-8|=14

Recall the distance formula;

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

We use the distance to find the non parallel sides.

$|ST|=\sqrt{(20-22)^2+(16-8)^2} =8.25$ units.

and

$|QR|=\sqrt{(8-14)^2+(16-8)^2} =10$ units.

The perimeter of the tra-pezoid is

=14+10+6+8.25=38.25

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3 years ago

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