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Archy [21]
3 years ago
13

Brian is skateboarding at 8 kilometers per hour. How long will it take Brian to travel 12 kilometers?

Mathematics
1 answer:
brilliants [131]3 years ago
4 0

Answer:

An hour and 30 minutes.

Step-by-step explanation:

In one hour, they travel 8 kilometers. They then have 4 kilometers left. 4 is half. of 8, so I would possibly take half the time it would to travel 8, making it 30 minutes for the other 4 kilometers.

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Miranda had 4 pounds, 6 ounces of clay. She divided it into 10 equal parts. How heavy was each part?
Mazyrski [523]

Change pounds to ounces.

1 pound = 16 ounces.

4 x 16 = 64 + 6 = 70 total ounces of clay.

Now divide by 10:

70 / 10 = 7

Each part was 7 ounces.

3 0
3 years ago
An ant can travel at a constant speed of 980 inches every 5 minutes. At this rate, how far can the ant travel in 7 minutes?
Ratling [72]
I think that answer is 1375


Explanation:

980 divided by 5= 196

196x5=980 so

196x7= 1375

Since the the unit rate was 196.


Might be wrong though


8 0
3 years ago
Read 2 more answers
Find the dimensions of a rectangle with area 512 m2 whose perimeter is as small as possible. (If both values are the same number
Masja [62]

Answer:

<h2>√512 by √512 </h2>

Step-by-step explanation:

Length the length and breadth of the rectangle be x and y.

Area of the rectangle A = Length * breadth

Perimeter P = 2(Length + Breadth)

A = xy and P = 2(x+y)

If the area of the rectangle is 512m², then 512 = xy

x = 512/y

Substituting x = 512/y into the formula for calculating the perimeter;

P = 2(512/y + y)

P = 1024/y + 2y

To get the value of y, we will set dP/dy to zero and solve.

dP/dy = -1024y⁻² + 2

-1024y⁻² + 2 = 0

-1024y⁻² = -2

512y⁻² = 1

y⁻² = 1/512

1/y² = 1/512

y²  = 512

y = √512 m

On testing for minimum, we must know that the perimeter is at the minimum when y = √512

From xy = 512

x(√512) = 512

x = 512/√512

On rationalizing, x = 512/√512 * √512 /√512

x = 512√512 /512

x = √512 m

Hence, the dimensions of a rectangle is √512 m  by √512 m

5 0
4 years ago
One-third of students totaled 12 in attendance. each pupil was what fraction of the group?
liubo4ka [24]
Let x represent the total number of pupils: (1/3)x = 12
Multiply both sides by 3:  x = 36
Total number of pupils is 36

1 pupil out of 36 pupils = 1/36

Answer: 1/36



6 0
3 years ago
What is the slope of a line that is perpendicular to the line y = 8x + 5?−8 -1/8 1/8 8
Cerrena [4.2K]

Answer:

-1/8

Step-by-step explanation:

When slopes are perpendicular that means it's completely opposite.

The opposite of 8 is 1/8

But 8 is positive that means we have to make the pereldicular slope negative

Therefore your answer is -1/8

Hope this helps p,z mark brainliest!

6 0
4 years ago
Read 2 more answers
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