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adoni [48]
2 years ago
15

A road-roller levels 3000m of road in 4hours How many metres does it level in a 24 hourday? please help me​

Mathematics
1 answer:
Naya [18.7K]2 years ago
7 0

Answer:

18,000 meters

Step-by-step explanation:

We know:

  • v = 4 and t = 24

Substitute:

{ v = 4      ⇒ INTO FORMULA ⇒ D = V × T : D = 4 × 24

{ t = 24

Cross out the common factor:

⇒ 6 × 3000

Calculate the product or quotient:

⇒ 18,000

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ICE Princess25 [194]

Answer:

x=-9

Step-by-step explanation:

first you make the coefficients equal to each other by doing a common factor which in this case is 5. Then you have to do the variable for each time the common number is repeated which is 5^x * 5^x= 5^(x+3)*5^(x+3)*5^(x+3) This would make it equal to 5^2x=5^(3x+9). Since the non exponents are common factors you can get rid of them and solve for the exponent by doing 2x=3x+9. You solve that equation to get x=-9.

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2 years ago
The function h(t) = -16t^2 + 16t represents the height (in feet) of a horse (t) seconds after it jumps during a steeplechase.
Vladimir79 [104]
A.) To find the maximum height, we can take the derivative of h(t). This will give us the rate at which the horse jumps (velocity) at time t.

h'(t) = -32t + 16

When the horse reaches its maximum height, its position on h(t) will be at the top of the parabola. The slope at this point will be zero because the line tangent to the peak of a parabola is a horizontal line. By setting h'(t) equal to 0, we can find the critical numbers which will be the maximum and minimum t values.

-32t + 16 = 0

-32t = -16

t = 0.5 seconds

b.) To find out if the horse can clear a fence that is 3.5 feet tall, we can plug 0.5 in for t in h(t) and solve for the maximum height.

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If 4 is the maximum height the horse can jump, then yes, it can clear a 3.5 foot tall fence.

c.) We know that the horse is in the air whenever h(t) is greater than 0. 

-16t^2 + 16t = 0

-16t(t-1)=0

t = 0 and 1

So if the horse is on the ground at t = 0 and t = 1, then we know it was in the air for 1 second.
7 0
3 years ago
What is the expression on -1/64
prisoha [69]

Answer:

The expression of ideas or feelings is the showing of them through words, actions, or artistic activities. ... Your expression is the way that your face looks at a particular moment. It shows what you are thinking or feeling. Levin sat there, an expression of sadness on his face.

Step-by-step explanation:


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3 years ago
PLEASE, I'M STUCK! Sketch the graphs of x = 7 and y=-1. Then find the point at which the two graphs intersect.
ycow [4]
Hello!

I have attached three graphs. The first one for x = 7, second one for y = -1, and third one with both x = 7 and y = -1 on the same graph. 

Hope this helps :))

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Number of emails received in one account every day from the day it was created until it was canceled:
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The answer is B. Complete information.

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