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tresset_1 [31]
3 years ago
10

What is the length of an arc with a central angle of 43? radians and a radius of 42 cm? use 3.14 for pi. round to the nearest hu

ndredth, if necessary. enter your answer as a decimal in the box. cm?
Mathematics
1 answer:
uysha [10]3 years ago
4 0
L=R*angle, but the angle *must* be in radians. So, just translate 43 degrees into radians: 43 * pi / 180, and you'll get:

L = 42 * ( 43 * pi / 180 ) ~ 31.504666, which rounded to the nearest hundredth is 31.50 cm.
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What is the value of the expression (-8/9) + (-2/3) x (-4 1/2)
geniusboy [140]

\frac{4}{9}

I hope this this is what you need ..

6 0
3 years ago
Please help me now plz
sergey [27]

Answer:

x=12

Step-by-step explanation:

The right side is a right triangle

The base is 1/2 of the bottom or 5

The height is x and the hypotenuse is 13

We can use the Pythagorean theorem

a^2 +b^2 = c^2

5^2 +x^2=13^2

25+x^2 = 169

Subtract 25 from each side

25-25+x^2 = 169-26

x^2 =144

Take the square root of each side

sqrt(x^2) = sqrt(144)

x= 12

4 0
3 years ago
At a water park, 27 out of 90 tickets sold were child tickets. what percentage of the tickets were child tickets?
Alik [6]
You do 27 divided by 90 27/90=0.3 and then move the decimal two places which would give you 30%
3 0
3 years ago
The revenue from selling x shirts is r(x)=12x.
kenny6666 [7]

Answer:

p(x) = 7x - 20

Step-by-step explanation:

A company makes a profit selling goods when the revenue taken in from the sales is greater than the cost of those goods:  p(x) = r(x) - c(x) > 0.

In this case the revenue function is r(x) = 12x; the cost function is c(x) = 5x + 20, and the profit function is p(x) = 12x - (5x + 20), or:

p(x) = 12x - 5x - 20, or

p(x) = 7x - 20

4 0
3 years ago
A suit is on sale for $154. If the original price of the suit was $440, what percent was discounted for the sale
Zina [86]
440(100-p)/100=154

440(100-p)=15400

44000-440p=15400

-440p=-28600

p=65%

So the price was discounted 65% off the original price.
5 0
3 years ago
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