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kati45 [8]
2 years ago
14

Please help me with this question

Mathematics
1 answer:
ikadub [295]2 years ago
8 0

Answer:

(A.

Explanation:

In A, line AD straight into BC, thus creating two 90 degree angles. This means that they are perpendicular.

(: Hope this helps

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3 years ago
It cost Alexandra $9.90 to send 198 text messages. How many text messages did she send if she spent $2.35?
tatiyna

Answer:

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Identifying equivalent statements and negations of a conditional statement: help
Vitek1552 [10]

Answer:

1: Equal

2: Negation

3: Negation

4: Neither

Step-by-step explanation:

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6 0
3 years ago
find the value of each variable in the circle to the right. the dot represents the center of the circle.
gladu [14]

We have been given an image of a circle. We are asked to find the value of each variable.

We can see that angle b corresponds to diameter of circle. We know that the measure of an angle that is inscribed to the diameter of a circle is 90 degrees . Therefore, the value of b will be 90.

we can see that angle is an inscribed angle of arc 99 degrees. We know that measure of an inscribed angle is half the measure of inscribed arc.

a=\frac{1}{2}\cdot 99

a=49.5

Therefore, the value of a is 49.5 units.

We know that measure of all angles of a triangle is 180 degrees. The measure of 3rd angle will be half the measure of c, so we can set an equation as:

a+b+\frac{1}{2}c=180

49.5+90+\frac{1}{2}c=180

139.5+\frac{1}{2}c=180

139.5-139.5+\frac{1}{2}c=180-139.5

\frac{1}{2}c=40.5

\frac{1}{2}c\cdot 2=40.5\cdot 2

c=81

Therefore, the value of c is 81.

3 0
2 years ago
What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?
EastWind [94]

Answer:

= 440 ft

Step-by-step explanation:

The perimeter of a rectangle is found by adding up all the sides.  We use the formula

P =2(l+w)

where l is the length and w is the width

The length is 140 and the width is 80

P = 2(140+80)

   = 2(220)

   = 440 ft

5 0
3 years ago
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