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Alja [10]
3 years ago
10

The area of a rectangle is 4 2 square inches. The length is 7 inches. What is the perimeter of the rectangle?

Mathematics
1 answer:
77julia77 [94]3 years ago
5 0

Answer: 26

Step-by-step explanation:

Area of a rectangle is length times width.

The area, 42, divided by the length, 7, is 6.

2 sides of the rectangle are 7, so the other 2 are 6.

6+6+7+7=26. The perimeter is 26.

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Two angle of a tranigle measure 55 and 20 what is the measure of the third angle
wariber [46]

Answer:

105 degrees

Step-by-step explanation:

Recall that the sum of angles in a triangle is 180 degrees. As such, where a, b and c are the angles of a triangle then

a + b + c = 180 ( all in degrees)

Given that two angles of a triangle measure 55 and 20, let the size of gthe 3rd be T then

55 + 20 + T = 180

simplify

75 + T = 180

Subtract 75 from both sides

T = 180 - 75

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7 0
2 years ago
see i don't mind giving my points away..Can anyone help me solve this though for a brainlest and extra points?​
victus00 [196]

Answer:

a=17\sqrt{2}

Step-by-step explanation:

As we have 2 of the angles, we can find the third. The measure of the third angle is 45 degrees.

As this is the same measure as the other, that means that the side length will be the same.

Now was have two side lengths of 17 in a right triangle, so we can use the Pythagorean theorem to find a.

Recall that the pythagorean theorem states: a^2+b^2=c^2

In this case, a is 17, b is 17, and c is a

Knowing this, we can input our value into this formula and solve for a.

17^2+17^2=a^2\\\\289+289=a^2\\\\a=\sqrt{578} \\\\a=17\sqrt{2}

6 0
3 years ago
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I'm honestly conflicted between C and D. Help.​
hichkok12 [17]
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2 years ago
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On Triangle ABC, Angle A measures 30 degrees, Angle B measures 90 degrees, and Angle C measures 60 degrees. List the sides of Tr
Mazyrski [523]

Answer:

A=30  B=90  C=60

Step-by-step explanation:

A=30 C=60  B=90

8 0
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