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podryga [215]
3 years ago
14

Constant of proportionality​

Mathematics
1 answer:
Vadim26 [7]3 years ago
8 0

Answer:

9.1) k = 4.6

9.2) k = 6

Step-by-step explanation:

9.1) 115 = k(25)

To find constant of proportionality, k, divide both sides by 25

\frac{115}{25} = \frac{k(25)}{25}

4.6 = k

Constant of proportionality, k = 4.6

9.2) 15 = k(2.5)

To find constant of proportionality, k, divide both sides by 2.5

\frac{15}{2.5} = \frac{k(2.5)}{2.5}

6 = k

Constant of proportionality, k = 6

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Leno4ka [110]

Answer:

1 year=3.2%

2 year=6.4%

3 year=9.6%

Step-by-step explanation:

Since the% increases every year

So for the first year=

3.2% of 1

3.2%×1

3.2%

For second year

3.2% ×2

6.4%

For the third year

3.2% × 3

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4 0
3 years ago
If you double a number and then add 1616​, you get two fifths 2 5 of the original number. what is the original​ number?
Scilla [17]
Let the original number be x.

Acc. to the question,
     2x+1616=(2/5)x
or, 10x+8080=2x
or, 10x-2x= -8080
or, 8x= -8080
or, x= -8080/8
or, x = -1010

Therefore, the original number is -1010
4 0
4 years ago
Suzanne needs material for her school project. She buys 5.50 yards of material at $3.87 a yard. What is the total cost of the ma
ASHA 777 [7]
   5.50
x 3.87
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21.285
5 0
3 years ago
Read 2 more answers
Put it in decimal form plssss………
raketka [301]
The answer is 58, because 2/5 is equal to 0.4, and 0.4 multiplied by 145 is 58.
3 0
3 years ago
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Sean is driving to visit his friend in another state.In the first hour he travels 1/5 of the total distance. In the second hour
lozanna [386]

Answer:

They live 285 miles apart

Step-by-step explanation:

Let the total distance be x miles

Sean is driving to visit his friend in another state. In the first hour he travels 1/5 of the total distance. This means that he drove x/5 in the first hour. In the second hour he travels 34 miles. That means

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(x/5 + 34)miles

He still has 194 miles more to go.

Therefore,

The total distance is the sum of the distance travelled in the first and second hour + the remaining distance.

x = x/5 + 34 + 194

x = x/5 + 228

Cross multiplying

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4x = 1140

x = 1140/4 = 285 miles

7 0
3 years ago
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