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Charra [1.4K]
2 years ago
10

Max drove 460 miles in 8 hours at a constant speed. How long would it take him to drive 661.25 miles at that speed

Mathematics
2 answers:
alexira [117]2 years ago
4 0
Rate x time = distance

8r = 460  Divide both sides by 8

rate = 57.5 miles per hour

At that speed (57.5mph) and the distance of 661.25miles we should divide

661.25 miles ÷ 57.5 mph = 11.5 hours

Makovka662 [10]2 years ago
3 0

Answer:

It will take 11.5 hours.

Step-by-step explanation:

Max drove 460 miles in 8 hours, so he drove 460/8 = 57.5 miles in one hour. Now,

\frac{57.5 miles}{1 hour} = \frac{661.25 miles}{x hours}

we found x,

x = \frac{661.25*1}{57.5}

x = 11.5 hours.

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Step-by-step explanation:

Tax is a compulsory sum levied by the government. it increases the price of the good

tax paid = tax rate x price of the book

18 x 8%

18 x 0.08 = $1.44

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3 years ago
Ben has a collection of 240 baseball cards. Of these cards, 30% once played
Luda [366]
Ok so lets start off with calculating the percentage. We have 240 cards so lets find 25% of them so lets use 240 times .25 we get 60 cards then take away 240 - 60 = 180. Next we do the 30% so 240 times .30 would be 72 so take away 180 from 72 thats 108. So there are 108 Houston Astros Cards.
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3 years ago
If the length of rectangle is thrice of its breadth and it's perimeter is 32 cm then finds its area​.​
jeka57 [31]

Answer:

48 cm²

Explanation:

Let the breadth be b, then the length is 3b

P = 2(Length + Breadth)

32 = 2(3b + b)

32 = 2(4b)

8b = 32

b = 4

Breadth is 4 cm

Length: 3b = 3(4) = 12 cm

Area of rectangle:

Length × Breadth

12 × 4

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3 0
1 year ago
Read 2 more answers
The half-life of the radioactive element unobtanium-43 is 10 seconds. If 48 grams of unobtanium-43 are initially present, how ma
natka813 [3]

Answer:

At time, 10 seconds, the mass remaining is 24 grams

At time, 20 seconds, the mass remaining is 12 grams

At time, 30 seconds, the mass remaining is 6 grams

At time, 40 seconds, the mass remaining is 3 grams

At time, 50 seconds, the mass remaining is 1.5 grams

Step-by-step explanation:

Given;

initial mass of the radioactive element  = 48 grams

half life, t = 10 seconds

time of decay (s)                          remaining mass of the  radioactive element

0 ------------------------------------------------- 48 grams

10------------------------------------------------- 24 grams

20 ------------------------------------------------- 12 grams

30 -------------------------------------------------- 6 grams

40 --------------------------------------------------- 3 grams

50 ----------------------------------------------------- 1.5 grams

60------------------------------------------------------0.75 grams

Thus;

At time, 10 seconds, the mass remaining is 24 grams

At time, 20 seconds, the mass remaining is 12 grams

At time, 30 seconds, the mass remaining is 6 grams

At time, 40 seconds, the mass remaining is 3 grams

At time, 50 seconds, the mass remaining is 1.5 grams

7 0
3 years ago
Hurryyyyyy!!! <br>which expression is equivalent to 7(1+3)? <br>a.1+21<br>b.7+21<br>c 7+3<br>d.7+4
n200080 [17]

Answer:

b. 7+21

Step-by-step explanation:

If you do 1+3=4 and then 4 times 7 that equals 28. When you do 7+21 that equals 28 too. So b is the answer

4 0
3 years ago
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