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RUDIKE [14]
3 years ago
15

Please can someone help?

Mathematics
2 answers:
Lady_Fox [76]3 years ago
5 0

Answer:

The answer is 40cm

Step-by-step explanation:

hope this helps :)

Nikolay [14]3 years ago
3 0

Answer:

40

Step-by-step explanation:

Side of square = x

Long side of rectangle = x + 5

Short side of rectangle = x - 3

(x - 3)(x + 5) = 84

x^2+2x-15=84

x = 9, x = -11

X has to be 9 because x cannot be negative.

9 + 5 = 14

9 - 3 = 6

14 + 14 + 6 + 6 = 40

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Find the measures of the angles of an isosceles triangle with a vertex angle of 42 degrees
I am Lyosha [343]

Answer:

69°, 69°, and 42°

Step-by-step explanation:

Isosceles triangles have three angles -- one vertex angle and two base angles.

The <u>base angles have the same measure</u> and the vertex angle has a different measure.

<u>Remember all triangles' interior angles sum to 180°.</u>

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Since the base angles are the same, <u>each base angle is:</u>

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Therefore the angles in the triangle measure 69°, 69°, and 42°.

3 0
4 years ago
Fred washes a car in 6 minutes, Carl washes a car in 8 minutes. If they wash a car together then how long will it take?
kondor19780726 [428]

Based on the problem Carl will complete...

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