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Mashutka [201]
3 years ago
12

A car run 3/4 mile per minute another car can run 4/5 mile per minute.what is the difference in speed in miles per hour?

Mathematics
1 answer:
dybincka [34]3 years ago
3 0

Answer:

3 miles per hour

Step-by-step explanation:

We need to subtract the two numbers to find the difference in speeds

4/5 - 3/4

We need to get a common denominator of 20

4/5 *4/4 - 3/4 *5/5

16/20 - 15/20

1/20  

The car going 4/5 miles per minute is going 1/20 miles per minute faster than the car going 3/4 miles per minute.

The question asks for miles per hour, not miles per minute.  We know  that there are 60 minutes per hour.

1/20 miles per minute * 60 minutes / hour

60/20 miles/hour

3 miles/ hour

The car going 4/5 miles per minute is going 3 miles per hour faster than the car going 3/4 miles per minute.

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I need help with similar triangles
Alika [10]

Answer:

ΔGHI and ΔDEF  are similar by SSS criteria

Step-by-step explanation:

Consider triangle GHI and triangle DEF

In ΔGHI, GH = 2, HI =4 and GI = 3.5

In ΔDEF , DE =4, EF = 6 and DF = 7

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5 0
3 years ago
1=10^0 into logarithmic form
Tatiana [17]

Answer:

0 = log_{10} 1

Step-by-step explanation:

Base for the exponent and for the logarithm are the same!

10^0 is the <u>exponential</u> form where 10 is the base and 0 the exponent

log_{10} 1 is the l<u>ogarithm</u> form where 10 is the base

To solve log_{10} 1 =   ask the question :

To what power should I raise the base 10 to obtain the number 1 ?

The answer to the power 0 therefore

log_{10} 1 = 0

1 = 10^{0}   -is-the- exponential -form\\0 = log_{10} 1 - is -the -logarithmic -form

7 0
2 years ago
Can someone please please please help me it’s ergent
JulsSmile [24]

Answer:

D 192

Step-by-step explanation:

used:  new: total

4:          1     :  5

We have 240 stamps

240/5 = 48

Multiply each number by 48

used:  new: total

4*48:   1*48  :  5*48

192  :  48     :  240

There are 192 used stamps and 48 new stamps in his collections

7 0
3 years ago
Read 2 more answers
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