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hodyreva [135]
3 years ago
13

If the length of a rectangular television screen is 20 inches and its height is 15 inches,

Mathematics
1 answer:
scoundrel [369]3 years ago
4 0
Use the Pythagorean theorem: 

<span>C = √[a^2 + b^2] </span>
<span>C = √[(20^2 + 15^2] </span>
<span>C =√[400 + 225] </span>
<span>C = √(625) </span>
<span>C = 25 inches </span>

Answer: 3.25 inches <span>✔️</span>
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The figure below shows two half-circles at the ends of a rectangle with the dimension shown.
timurjin [86]

Answer:

D. 154

Step-by-step explanation:

The area of the rectangle is 15*5= 75 inches

The area of the 2 semicircles combined, which make a circle, are:

π*r², where r is 5

r²=25

π*25=78.53981633

75 + 78.53981633 is about 154

5 0
2 years ago
2x + 3 = 5, then, x=
Pavlova-9 [17]

Answer:

x= 1

Step-by-step explanation:

2x1=2+3=5

7 0
3 years ago
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Anesh normally buys 1.5 litre bottles of soft drink. At the supermarket he notices a promotion bottle that has 25 percent extra.
slavikrds [6]

Answer:

6ml

Step-by-step explanation:

=25%÷100%

=0•25

1.5l to ml

1L=1000ml

=1.5000ml÷0.25

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6 0
2 years ago
Helena wrote the equation using point-slope form for the line that passes through the points (5, 1) and (3, 5). Analyze the step
viva [34]

Answer:

In step 2, she didn’t use an x and y from the same coordinate pair

Step-by-step explanation:

see the attached figure to better understand the problem

we have the points (5, 1) and (3, 5)

step 1

Find the slope

The formula to calculate the slope between two points is equal to

m=\frac{y2-y1}{x2-x1}

substitute

m=\frac{5-1}{3-5}

m=\frac{4}{-2}

m=-2

step 2

The equation of the line in point slope form is

y-y1=m(x-x1)

take the point (3,5)

m=-2

substitute

y-5=-2(x-3)

y-5=-2x+6

y=-2x+6+5

step 3

y=-2x+11

therefore

In step 2, she didn’t use an x and y from the same coordinate pair

3 0
3 years ago
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Which of the following is a characteristic of the circumcenter of a triangle? A. It is the center of the circle that can be insc
ki77a [65]
Answer is A. It is the center of the circle that can be inscribed in a given triangle
Explanation
The circumcenter is called ”the circumcenter” because it is the center of the circle that ”circumscribes” the triangle.
6 0
1 year ago
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