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Brrunno [24]
3 years ago
15

Find the anhle measure x in the figure​

Mathematics
1 answer:
Margarita [4]3 years ago
5 0

Answer:

x=25°

Step-by-step explanation:

<u>Sum of angles of a triangle equals 180°</u>

  • x + 10° + 2x + 15° + 3x + 5° = 180°
  • 6x + 30° = 180°
  • 6x = 180° - 30°
  • 6x = 150°
  • x = 150°/6
  • x = 25°
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Factor by grouping<br> 2a^2+ab+5ab+5b^2
masha68 [24]
<span>2a^2+ab+5ab+5b^2
2a(a+b) +5b(a+b)
(a+b)(2a+5b)</span>
4 0
3 years ago
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Which expression results from using the distributive property 2(5 + r)
Vinvika [58]
Using the distributive property we know we distribute by multiplying the outside values to those inside of the parentheses

outside values: 2

inside values: 5 and r

now multiply out inside values by the outside values

2x5 = 10

2xr = 2r

now plug these values back in for the inside values and take away the outside value and the parentheses

so 2(5+r) using the distribution property is 10+2r
7 0
3 years ago
Given AB is tangent to circle C at point B, what is the circumference of circle C?
faltersainse [42]

<u>Given</u>:

Given that AB is a tangent to circle C.

The length of AB is (2r -1)

The length of AC is (r + 1) + r

The length of BC is r.

We need to determine the circumference of the circle C.

<u>Value of r:</u>

The value of r can be determined using the Pythagorean theorem.

Thus, we have;

AC^2=AB^2+BC^2

Substituting the values, we have;

[(r+1)+r]^2=(2r-1)^2+r^2

Simplifying, we have;

(2r+1)^2=(2r-1)^2+r^2

Expanding the terms, we get;

4r^2+4r+1=4r^2-4r+1+r^2

4r^2+4r+1=5r^2-4r+1

Simplifying the values, we have;

4r=-4r+r^2

Adding both sides of the equation by 4r, we get;

8r=r^2

 0=r^2-8r

 0=r(r-8)

Thus, r=0 \ or \ r=8

Since, the radius of the circle cannot be 0.

Hence, the radius of the circle is 8.

<u>Circumference of the circle:</u>

The circumference of the circle can be determined using the formula,

C=2 \pi r

Substituting r = 8, we get;

C=2 \pi (8)

C=16 \pi

Thus, the circumference of the circle is 16π

Hence, Option A is the correct answer.

5 0
3 years ago
At a particular restaurant, each pizza roll has 60 calories and each mini hotdog has 70 calories. A combination meal with pizza
PolarNik [594]

Answer:

There are 9 pizza rolls and 12 mini hotdogs in the meal.

Step-by-step explanation:

We are given the following in the question.

Let x be the number of pizza rolls sold and y be the number of mini hotdogs in the combination meal.

Total number of items in combination meal = 21

Thus, we can write the equation:

x + y = 21

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Calorie in a mini hotdog = 70

Total calories = 1380

Thus, we can write the equation:

60x + 70y = 1380

Solving the two equations, we get,

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4 0
3 years ago
Convert 125% into a decimal.
dalvyx [7]

Answer:

1.25

Step-by-step explanation:

it is what it is

7 0
2 years ago
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