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mart [117]
3 years ago
13

If you can travel 500 miles in 1 hour, how long will it take you to travel 800 miles

Mathematics
1 answer:
zhenek [66]3 years ago
7 0

Answer:

1 hours and 30 minutes

Step-by-step explanation:

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A population of mice is increasing exponentially. On Monday there were 120 most. One month later there were 132 most. Ready func
djyliett [7]

Answer:

y=120 * 1.1^x --- function

The monthly rate is 10%

Step-by-step explanation:

Given

Let

x \to months

y \to mice

So, we have:

(x_1,y_1) = (0,120) --- Monday

(x_2,y_2) = (1,132) --- One month later

Required

The function

The function is represented as:

y=ab^x

In (x_1,y_1) = (0,120), we have:

120 = a * b^0

120 = a * 1

120 = a

a=120

In (x_2,y_2) = (1,132), we have:

132 = a * b^1

132 = a * b

Substitute: a=120

132 = 120 * b

Solve for b

b = \frac{132}{120}

b = 1.1

So, the function is:

y=ab^x

y=120 * 1.1^x

To calculate the monthly rate (r), we have:

y =a(1 + r)^x

Compare to: y =ab^x

1 + r = b

Make r the subject

r = b-1

Substitute b = 1.1

r = 1.1-1

r = 0.1

Express as percentage

r = 0.1*100\%

r = 10\%

5 0
2 years ago
Assume the mean life of an iPhone is 5 years (60 months)and a standard deviation of 8 months If the age in years at which an iPh
melamori03 [73]

Answer:

Answer:

safe speed for the larger radius track u= √2 v

Explanation:

The sum of the forces on either side is the same, the only difference is the radius of curvature and speed.

Also given that r_1= smaller radius

r_2= larger radius curve

r_2= 2r_1..............i

let u be the speed of larger radius curve

now, \sum F = \frac{mv^2}{r_1} =\frac{mu^2}{r_2}∑F=

r

1

mv

2

=

r

2

mu

2

................ii

form i and ii we can write

v^2= \frac{1}{2} u^2v

2

=

2

1

u

2

⇒u= √2 v

therefore, safe speed for the larger radius track u= √2 v

8 0
2 years ago
I need help on this question as soon as possible
Dennis_Churaev [7]

Answer:

2.5, 5, 7, 8

Step-by-step explanation:

6 0
3 years ago
Evaluate 2.5m - 3.6n when m = 2 and n=5
Anon25 [30]

Answer:

-13

Step-by-step explanation:

2.5 * 2 = 5.

3.6 * 5 = 18.

5 - 18 = -13

3 0
3 years ago
Please help D:
lawyer [7]
The answer is <span>The sum is 10 · 11.
</span>
The first 10 positive even numbers are:
2, 4, 6, 8, 10, 12, 14, 16, 18, 20

Their sum is:
 2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 + 18 + 20 = 110

Now, let's present it as two factors:
110 = 11 * 10
3 0
3 years ago
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