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kirill [66]
3 years ago
5

In a class of 40 students, everyone has either a pierced nose or a pierced ear. The professor asks everyone with a pierced nose

to raise his or her hand. Eight hands go up. Then the professor asked everyone with a pierced ear to do likewise. This time there are 34 hands raised. How many students have piercings both on their ears and their noses?
Mathematics
1 answer:
stepan [7]3 years ago
6 0
2 students have both their nose and ears pierced
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(Round to the nearest tenth of a percent.) In 2011, the IRS increased the deductible mileage cost to
RUDIKE [14]

Answer:

\%Change = 8.8\%

Step-by-step explanation:

Given

Initial = 51\ cents

Final = 55.5\ cents

Required

Determine the percentage change

Percentage change is calculated as;

\%Change = \frac{Final - Initial}{Initial} * 100\%

\%Change = \frac{55.5 - 51 }{51 } * 100\%

\%Change = \frac{4.5}{51} * 100\%

\%Change = \frac{4.5* 100\%}{51}

\%Change = \frac{450\%}{51}

\%Change = 8.8\%

<em>Hence, the percentage change is approximately 8.8%</em>

6 0
2 years ago
Which equation represents the relationship between the side length, x, and the perimeter, y? y = one-fourth x y = 4x y = x + 13.
elixir [45]

Answer: B.

Y = 4x

Step-by-step explanation:

Given that the side of a shape is x

The perimeter of the shape is y

Perimeter of a rectangle can be expressed as:

P = 2L + 2W

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But if the shape is a square, and the side of the shape is x, then, the perimeter will be

P = 4x

Where perimeter P = Y

Therefore, perimeter Y will be;

Y = 4x

Therefore, the correct answer is B which is:

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4 0
2 years ago
Find the value of x if ∡A and ∡B are supplementary angles.
Elanso [62]

Answer:

x = 30.5

Step-by-step explanation:

Two angles are supplementary when they add up to 180°.

So we know that:

C + D = 180

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(3x-44) + (5x-20) = 180

We add up the X's.

8x-44-20 = 180

8x-64 = 180

Then we send 64 to the other side adding:

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And then the 8 goes dividing:

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3 0
2 years ago
Candy bars are sold in a local store for 90 cents each. The factory has $1500 in fixed costs plus 10 cents of additional expense
pychu [463]

Answer:

Produce of 2000 candy bars is the break even point.

Step-by-step explanation:

4 0
3 years ago
From her window 5m above the ground, Sherri spots a turtle on the ground at a 34 degree angle of depression. To the nearest tent
Thepotemich [5.8K]
Let y be the distance from the turtle to the base of the building.

tan (34) = 5/y
y = 5 ÷ cos(34) 
y = 7.4m

-----------------------------------------------------------------
Answer: The distance is 7.4 meters (Answer A)
-----------------------------------------------------------------
3 0
3 years ago
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