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iragen [17]
3 years ago
12

Lara reads 10 chapters in 4 hours. At this pace, how long will it take her to read 25 chapters? Enter your answer in the box.

Mathematics
2 answers:
Oduvanchick [21]3 years ago
8 0
Lara can read 10 chapters in 4 hours.

At this rate, she can read half that many chapters in half the time.
So she reads 5 chapters in 2 hours.

So Lara reads 10 chapters in 4 hours,
+ 10 chapters in 4 more hours,
+ 5 chapters in 2 more hours.

That's 25 chapters in total, and 10 hours in total, ya? :)


lapo4ka [179]3 years ago
7 0
10/4 = 2.5 chapters per hour
25 chapters/2.5 chapter per hour = 10 hours
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3 years ago
A person invest $1800 in a account that earns 2.46% annual interest. Find when the value of the investment teachers $3500
GrogVix [38]

Answer:

28 years

Step-by-step explanation:

To find the number of years that the investment will reach $3500, we can use the formula of compound interest:

P = Po * (1+r)^t

where P is the final value, Po is the inicial value, r is the annual interest and t is the time in years.

In this question, P = 3500, Po = 1800 and r = 2.46% = 0.0246, so:

3500 = 1800 * (1+0.0246)^t

1.0246^t = 3500/1800

1.0246^t = 1.9444

Using logarithm in both sides:

log(1.0246^t) = log(1.9444)

t*log(1.0246) = 0.2888

t * 0.0106 = 0.2888

t = 0.2888 / 0.0106 = 27.2453 years

So the investment will reach $3500 after 28 years (rounding the result up, because after 27 years the investment will not reach $3500)

4 0
2 years ago
Is ( -5, 6) ( -2, 0) ( 0, 6) ( 0, 2) ( 1, -3) a function
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8 0
2 years ago
Read 2 more answers
The area of the base of a prism is 70 mm2. The perimeter of the base is 50 mm. The height of the prism is 9 mm.
Gala2k [10]
The surface area of a prism is the sum of the lateral area plus the area of the two bases. 

<span>LA = p * h </span>

<span>p is the perimeter of the base </span>

<span>For your prism </span>

<span>SA = 2(70) + 50 * 9 = 590 mm^2  <-----OPTION C
</span>
Hope this answers the question,
4 0
3 years ago
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