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Alex
3 years ago
14

a car travels 10 miles in 15 minutes, how many miles will the car travel in 60 minutes at this rate? how many miles will it trav

el in 45 minutes?
Mathematics
1 answer:
nlexa [21]3 years ago
3 0

Answer:60/15=4

So 10 miles in 15 min = 40 in 60 min or 30 in 45.

Step-by-step explanation:

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PLEASE HELP 20 POINTS
Anika [276]
Hello!

A sample of Bromine-82 begins at 80 mL. We are given that this value will decrease by half of its current amount every 35 hours. First, we'll determine the number of times that 35 goes into 140. This will reveal the number of times we should divide the sample by 2:

140 ÷ 35 = 4

We have now proven that there are 4 periods of 35 hours in 140 hours. This means that we will divide the sample in half a total of 4 times, as follows:

1. 80 ÷ 2 = 40
2. 40 ÷ 2 = 20
3. 20 ÷ 2 = 10
4. 10 ÷ 2 = 5

We have now proven that an 80 mL sample of Bromine-82 will be reduced to only 5 mL after 140 hours. Therefore, the correct answer is 5 mL.

I hope this helps!
7 0
2 years ago
Read 2 more answers
James rode his bike for 0.65 hours and traveled 8.45 km what is his speed?
skelet666 [1.2K]
S=d/t
s=8.45km/0.65hr
s= 13km/hr

Therefore the speed is 13km/h.

Hope that helps :)
5 0
3 years ago
Find the minimum distance between the point (-3,2) and the line y = -x + 1
Natasha2012 [34]

The minimum distance  between the point(-3,2) and the line y = -x + 1  is \sqrt{2} units.

<h3>What is a line segment?</h3>

The line that joins  two points on a cartesian plane is a line segment.

Analysis:

The formula for calculating distance between a line and a point is

d = \frac{Ax1 + By1 + c}{\sqrt{A^{2} + B^{2}  } }

where A = coefficient of x term of the line, B = coefficient of y in the line and C is the constant term of the line.

x1 and y1 are coordinates of the point.

for the line y = -x + 1 which is  = y + x -1 = 0, A = 1, B = 1, C = -1, x1 = -3, y = 2
d = \frac{1(-3) + 1(2) + (-1)}{\sqrt{(-3)^{2}  + 2^{2} } }= \sqrt{2} units

In conclusion, the distance between the point and the line is  \sqrt{2} units

Learn more about distance between line segments: brainly.com/question/2437195

#SPJ1

4 0
1 year ago
Solve each triangle. Round your answers to the nearest tenth.<br> m∠A = 60°, m∠B = 30°, c = 30 cm
Svetach [21]

Answer:

mb = 30

Step-by-step explanation:

i got it from me school

8 0
1 year ago
Read 2 more answers
Which expression is equivalent to 64y18 – 1000z6?
const2013 [10]
(16y6)3 - (10z2)3 I think is the right answer
3 0
3 years ago
Read 2 more answers
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