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viva [34]
2 years ago
7

Find the diameter and the radius of the circle 13yd

Mathematics
1 answer:
Reil [10]2 years ago
6 0

Answer:

52

Step-by-step explanation:

This is because the formula is dr

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Pl help it’s for a grade
agasfer [191]
The answer is definitely c
6 0
3 years ago
The measures of the obtuse angles in the isosceles trapezoid are five more than four times the measures of the acute angles. Wri
emmainna [20.7K]

Answer:

a. i. x + y = 180  (1) and  x - 4y = 5   (2)

ii. The two acute angles are 35° each and the two obtuse angles are 145° each.

Step-by-step explanation:

a. The measures of the obtuse angles in the isosceles trapezoid are five more than four times the measures of the acute angles. Write and solve a system of equations to find the measures of all the angles.

i. Write a system of equations to find the measures of all the angles.

Let x be the obtuse angles and y be the acute angles.

Since we have two obtuse angles at the top of the isosceles trapezoid and two acute angles at the bottom of the isosceles trapezoid, and also, since the sum of angles in a quadrilateral is 360, we have

2x + 2y = 360

x + y = 180  (1)

Its is also given that the measures of the obtuse angles in the isosceles trapezoid are five more than four times the measures of the acute angles.

So, x = 4y + 5   (2)

x - 4y = 5   (2)

So, our system of equations are

x + y = 180  (1) and  x - 4y = 5   (2)

ii. Solve a system of equations to find the measures of all the angles.

Since

x + y = 180  (1) and  x - 4y = 5   (2)

Subtracting (2) from (1), we have

x + y = 180  (1)

-

x - 4y = 5   (2)

5y = 175

dividing both sides by 5, we have

y = 175/5

y = 35°

From (1), x = 180° - y = 180° - 35° = 145°

So, the two acute angles are 35° each and the two obtuse angles are 145° each.

4 0
3 years ago
In the year 2002, a company made $3.3 million in profit. For each consecutive year after that, their profit increased by 5%. How
Anton [14]

Answer:

The profit would be 7.7 million in 2007

Step-by-step explanation:

3 0
3 years ago
Factor:<br> 4x^2+4xy−288y^2
Sonja [21]
4x^2+4xy-288y^2=\\&#10;4(x^2+xy-72y)=\\&#10;4(x^2+9xy-8xy-72y)=\\&#10;4(x(x+9y)-8y(x+9y))=\\&#10;4(x-8y)(x+9y)
7 0
3 years ago
Are the expressions 2x+8 and 2(x+4)+4 equivalent
andriy [413]

Answer:

No

Step-by-step explanation:

2x+8 2(x+4)+4

2(x)+2(4)+4

2x+8+4

2x+12

4 0
3 years ago
Read 2 more answers
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