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3 years ago

Paul can build a desk in 12

Mathematics

1 answer:

DaniilM [7]3 years ago

3 0

Answer:

288

Step-by-step explanation:

First, find how much of the desk each person can finish in 1 hour. Paul can finish 1/12 because he finishes the whole thing in 12 hours and Shawn can finish 1/8 because he finishes the whole thing in 8 hours.

Then find a common denominator and add those together to find how much they could do together in 1 hour.

2/24 + 3/24 = 5/24 So they can finish 5/24 of the desk in 1 hour if they work together.

So to finish 24/24 of the desk, they'll need to do 4 hours (20/24 of the desk) and 48 minutes (4/24 of the desk)

It asked for the number of minutes, so multiply 4 by 60 and add 48 to find the total number of minutes. 4*60 = 240 and 240 + 48 = 288

So it will take them 288 minutes to build the desk together.

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a football is kicked into the air. The height of the football can be modeled by h=-16x^2 +32x, where h is the height reached by

Andrej [43]

Your question is incomplete, here is the complete question;

A football is kicked into the air and follows the path defined by h=-2x^2+16x, where x is the time in seconds and h is the height in meters. What is the maximum height reached by the football?

Answer:

maximum height=h=32 meters

Step-by-step explanation:

The given equation is the equation of the parabola or quadratic equation.

The maximum height of the ball will occur at the axis of symmetry.

For the axis of symmetry let h=0,

so,

$-2x^2+16x=0$

comparing this equation to standard quadratic/parabola's equation, we get

a= -2, b=16 and c=0

Formula for axis of symmetry is x=-b/2a

x=-16/2*(-2)

x=-16/-4

x=4 it means axis of symmetry is vertical line through the point x=+4, so the maximum height will occur at x=+4

put x=4 to get maximum height as;

$h=-2(4)^2+16(4)$

$h=-2(16)+64\\\\h=-32+64\\\\h=32$

Maximum height $=h=32\ meter$

8 0

3 years ago

HELP !!

Mamont248 [21]

in my opinion C is the answer

6 0

3 years ago

Antonio buys a 10-pound bag of potatoes for $3.98. To the nearest cent, how much is 1 pound of potatoes?

valentinak56 [21]

Answer:

C $0.40

Step-by-step explanation:

to find how much one pound of potatoes is, you have to divide the the cost of the bad by the number of pounds ($3.98 divided by 10 pounds)

$3.98 : 10 = $0.398 = $0.40

3 0

3 years ago

A triangle with side length of 4 inches, 7 inches and 10 inches is

nexus9112 [7]

Answer:

scalene

Step-by-step explanation:

also an acute triangle is something to do with angles so as long as no angles are provided, scalene is the best option

4 0

3 years ago

A circle is inscribed in a square is 10 inch sides what is the circumference of the circle use 3.14 as an approximation for pie

MissTica

Answer:

31.4 inches

Step-by-step explanation:

If a circle is inscribed in a square then diameter of circle inscribed is same as side as of square.

In the given problem it is given that side of square is 10 inches.

So diameter of circle inscribed is 10 inches

we know radius of circle is half of diameter of circle

Thus, radius of circle inscribed = diameter of circle/2 = 10/2 = 5inches.

Expression to calculate circumference of circle is given by $2\pi r$

where r is the radius of circle.

Thus circumference of circle inscribed is

$2*\pi *5\\=> 10*3.14 \\=> 31.4$

Thus, circumference of circle inscribed is 31.4 inches

6 0

3 years ago