chad poured a sidewalk that is 42 ft long. He is going to start at the beginning and make a cut every 20 inches. How many cuts will Chad make?

Answers

Answer 1

Answer: So The First Step in tackling this problem is first do $42x12$ , The reason why we do this is because we are converting feet to inches. After that we will get 504 inches. The next and final step is to do 504÷20. Then we will get 25.2 so the final answer is that Chad will make 25 cuts.

Answer 2

Answer: Twice because you would divide the 2 numbers together, and you get a small decimal. But since you can't cut a decimal then It would be 2, so 2 cuts. :)

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What is square root of 81
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An object launched vertically from a point that is 37.5 feet above ground level with an initial velocity of 48.6 feet per second can be represented by the equation h=−16t^2+48.6t+37.5, where h is the height of the object and t is the time after the object is launched. How long does it take the object to hit the ground?

Answers

Answer: 3.675 seconds

Step-by-step explanation:

Hi, when the object hits the ground, h=0:

h=−16t^2+48.6t+37.5

0=−16t^2+48.6t+37.5

We have to apply the quadratic formula:

For: ax2+ bx + c

x =[ -b ± √b²-4ac] /2a

Replacing with the values given:

a=-16 ; b=48.6; c=37.5

x =[ -(48.6) ± √(-48.6)²-4(-16)37.5] /2(-16)

x = [ -48.6 ± √ 4,761.96] /-32

x = [ -48.6 ± 69] /-32

Positive:

x = [ -48.6 + 69] /-32 = -0.6375

Negative:

x = [ -48.6 - 69] /-32 = 3.675 seconds (seconds can't be negative)

Feel free to ask for more if needed or if you did not understand something.

The object to hit the ground takes 3.675 seconds.

An initial velocity of 48.6 feet per second

When the object hits the ground, h=0:

h=−16t²+48.6t+37.5

0=−16t²+48.6t+37.5

We have to apply the quadratic formula:

For: ax²+ bx + c

x =[ -b ± √b²-4ac] /2a

Substituting with the values given:

a=-16 ; b=48.6; c=37.5

x =[ -(48.6) ± √(-48.6)²-4(-16)37.5] /2(-16)

x = [ -48.6 ± √ 4,761.96] /-32

x = [ -48.6 ± 69] /-32

Positive:

x = [ -48.6 + 69] /-32 = -0.6375

Negative:

x = [ -48.6 - 69] /-32 = 3.675 seconds (seconds can't be negative)

For such more questions on object

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9p=81
helppppppppppppppppp

Answers

p = 9 becsude 9 x 9 = 81 so yeah

Which costs more per issue, an 18-issue subscription for $40.50 or a 12-issue subscription for $33.60? Explain. (Make sure to show your work and explain your solution Plz.)

Answers

You have to divide total price by "18 times" for the first and by "12 times" for the second.

So,

The 18-issue subscription costs $(40,50)/(18) =\$2.25$ per issue.
The 12-issue subscription costs $(33,60)/(12) =\$2.80$ per issue.

Therefore the 12-issue subscription costs more per issue.

The 18-issue subscription costs 40.50/18. You divide 40.50/18. It is 2.25 per issue
The 12-issue subscription costs 33.60/12. You divide 33.60/12. It is 2.80 per issue

Therefore: The 12-issue subscription costs more than the 18-issue subscription.

1000 equals 50 divided by X?

Answers

=>1000= 50/X ..=>Or , 50/X = 1000=>X = 1000× 50=>X= 50000...Hope it helps!!!

Temperature changes throughout the hours of a day. Early in the morning, temperature increases slowly. At noon, the temperature rises sharply. During the afternoon, the temperature stays the same for several hours. As night falls, the temperature decreases slightly. Choose the graph that best represents this situation,

Answers

Final answer:

A line graph would best represent the temperature changes throughout the hours of a day, showing a slow increase in the morning, a sharp rise at noon, a plateau in the afternoon, and a slight decrease at night.

Explanation:

The best graph to represent the temperature changes throughout the hours of a day would be a line graph. The graph should show a slow increase in temperature early in the morning, a sharp rise at noon, a plateau during the afternoon, and a slight decrease as night falls. This pattern follows the circadian rhythm, where temperature rises throughout the waking day, peaks in the afternoon, and falls during sleep.

Learn more about Temperature changes throughout the day here:

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Answer:

Step-by-step explanation:

the answer is D

Given (x)=-x²+2x,determine
F'(x) using first principle

Answers

Hello,
which principle?

f(x)=-x²+2x
==>f'(x)= -2x+2

You mean maybe this

$\lim_(h \to 0) \frac{f(x+h)-f(x) } {h}$

f(x+h)=-(x+h)²+2(x+h)= -(x²+2hx+h²)+2x+2h
f(x)=-x²+2x

$\lim_(h \to 0) \frac{f(x+h)-f(x) } {h}=\lim_(h \to 0)(-2hx-h^2+2h)/(h)=\lim_(h \to 0)(-2x-h+2)/(1)=-2x+2$

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