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Alex73 [517]
3 years ago
13

Kona’s mother realized that her age is the difference of Kona’s age squared and four. If k represents Kona’s age, which expressi

on represents Kona’s mother’s age?
Mathematics
2 answers:
san4es73 [151]3 years ago
7 0
(K²+4)= her moms age :)
ira [324]3 years ago
5 0

Answer:  The required expression representing Kona's mother age is k^2-4.

Step-by-step explanation:  Given that Kona’s mother realized that her age is the difference of Kona’s age squared and four.

We are to find the expression that represents Kona’s mother’s age.

Given that Kona's age is represented by k.

So, the square of Kona's age will be k^2.

Now, we are suppose to take the difference of k^2 and 4, which is represented by

k^2-4.

We cannot take 4-k^2, because the age of Kona's mother cannot be so small.

Therefore, if 'm' represents the age of Kona's mother, then we get

m=k^2-4.

Thus, the required expression is k^2-4.

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The perimeters of the square and the regular pentagon are equal.
Mashutka [201]

Answer:

the answer is 60 not 42 goodluck

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3 years ago
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Choose all of the equivalent ratios for 64:80<br> 8:12<br> 32:40<br> 4:5<br> 16:24<br> 120:160
Alinara [238K]

Answer:

32/40, 4/5

Step-by-step explanation:

All these ratios are follow the ratio 4:5 meaning they are equivalent to "64:80".

8:12=0.666667

16"24=0.666667

120:160=0.75

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3 years ago
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A car travels 500 miles at an average speed of 60 MPH on the return trip the same route that it travels 50 miles per hour how lo
xxMikexx [17]

Step-by-step explanation:

it is not clear - is 500 miles the whole round trip, or is it only the trip in one direction ?

and do we need the time for the whole round trip, or only for the return trip ?

in any case, always remember,

speed = distance/time

therefore, to get time, we need to divide distance by speed :

distance / distance/time = time×distance/distance = time

so, let's calculate all these different scenarios :

1. 500 miles is only one direction, and we measure only the time going back with 60 mph :

500 / 60 = 50/6 = 25/3 = 8 1/3 = 8 hours 20 minutes.

as 1/3 of 1 hour = 1/3 of 60 minutes = 60/3 = 20 minutes.

2. 500 miles is only one direction (going 1000 miles altogether), and we measure the time going to with 50 mph and going back with 60 mph :

500 / 50 = 10 hours

500 / 60 = 8 hours 20 minutes

the whole round trip takes 18 hours 20 minutes.

3. 500 miles is the whole round trip. so, 250 miles is one direction. and we measure only the time going back with 60 mph :

250 / 60 = 25/6 = 4 1/6 = 4 hours 10 minutes.

as 1/6 of 1 hour = 1/6 of 60 minutes = 60/6 = 10 minutes.

4. 500 miles is the whole round trip. so, 250 miles is one direction. and we measure the time going to with 50 mph and back with 60 mph :

250 / 50 = 5 hours

250 / 60 = 4 hours 10 minutes

the whole round trip takes 9 hours 10 minutes.

did you notice ?

when going only half the distance, also the time it takes to travel that distance is only half (or vice versa - double). because the ratio distance/time is always the same.

7 0
2 years ago
Solve by completing the square.<br> X^2-2x-15=0 (help)
gladu [14]

Step-by-step explanation:

x² - 2x - 15 = 0

x1 = 5

x2 = -3

8 0
3 years ago
Read 2 more answers
Solve for x. Show your work or explain your answer.
Alja [10]
X=2
x=15
4x+1=9
-1 -1
4x=8
4/4x=8/4=2

x/5-1=2
+1 +1
x/5=3
(5) (5)
x=15
8 0
3 years ago
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