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Afina-wow [57]
3 years ago
14

Twice a number increased by 3 is 45. What is the number?

Mathematics
2 answers:
Arada [10]3 years ago
7 0
135 because 45x3=135 at least I'm sure this is what you mean
irinina [24]3 years ago
5 0

2N+3=45

2N = 42

N = 42/2 = 21

N = 21

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Kendra has a painting canvas that is 20 inches wide by 37 inches high. She painted a red rose, which covered 50% of the canvas.
uysha [10]
The total area is:
 A = (20) * (37)
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 740in ^ 2 -----> 100%
 x --------------> 50%
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 Answer:
 
the area of the canvas which was covered by the red rose was:
 
x = 370 in ^ 2
6 0
3 years ago
Zach wants to build a slanted skateboard ramp. He knows he wants the ramp to form a 15 degrees angle with the ground and be 4 fe
Fynjy0 [20]

Answer: The ramp would be 15.5 feet long.

Step-by-step explanation: Please refer to the attached diagram for details.

Angle C shows the angle to be formed by the ramp from the ground, which is 15 degrees. Also, from the ground, it’s going to be four feet tall, which is line AB. The top of the ramp is point A, which makes line AC the entire length of the ramp. Since we have a reference angle (angle C) and two sides, the opposite and the hypotenuse, we shall apply the trigonometric ratio.

SinC = opposite/hypotenuse

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By cross multiplication we now have

b = 4/Sin15

b = 4/0.2588

b = 15.4599

Approximately b = 15.5

Therefore the length of the ramp would be 15.5 feet

6 0
3 years ago
If sea level = 0, write an integer that represents 25 feet below sea level.
Svetach [21]

Answer: -25

Step-by-step explanation:

6 0
3 years ago
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Define the opposite and the absolute value of -8.
umka2103 [35]

Answer:

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Step-by-step explanation:

6 0
3 years ago
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Please answer all for 50 points and show the answers thank you
melamori03 [73]
What do you need help with? it helps us to know the question!
6 0
3 years ago
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