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slava [35]
4 years ago
11

Here is a number machine.

Mathematics
1 answer:
Ket [755]4 years ago
5 0

Answer:

a) 37

b) 9

Step-by-step explanation:

(The input) × 5 - 3 = (The output)

When the input is 8,

8 × 5 - 3

= 40 - 3

= 37

When the output is 42.

(The input) × 5 - 3 =42

(The input) × 5 = 42 + 3

(The input) × 5/5=45/5

(The input) = 9

The input was 9.

You might be interested in
Calculate the amount and compound interest on Rs 5000 compounded annually or 2 years 6 months at the rate of 10% per annum.
cluponka [151]

Answer:

Amount

Rs 6345.30

Compound interest

Rs 1,345.30

Step-by-step explanation:

Here in this question, we are interested in calculating the amount and the compound interest on the value given.

To calculate the amount, we use the formula below;

A = P(1 + r/n)^nt

Where; A is the amount which we want to calculate

P is the principal which is Rs 5,000

r is the interest rate per annum = 10% = 10/100 = 0.1

n is the number of times per year in which it is compounded ( since it is annually, then it is 1)

t is the number of years which is 2.5 years( kindly know that 6 months is same 1/2 year , so 6 months is same as 0.5, and thus 2 years 6 months becomes 2.5 years)

now let’s substitute all these values;

A = 5000(1 + 0.1/1)^(1*2.5)

A = 5000(1 + 0.1)^2.5

A = 5000(1.1)^2.5

A = 6,345.2935314294

This is approximately Rs 6,345.30

The second part of the question asks to calculate compound interest

Mathematically ;compound interest = Amount - principal

= 6345.3 - 5000 = Rs 1,345.30

7 0
4 years ago
Spencer wants to burn 450 calories while biking. Biking burns about 10 calories per minute. When Spencer goes biking, he usually
Lady bird [3.3K]

Answer:

60 minutes including the 15 minute rest.

Step-by-step explanation:

450/10 is 45. Therefore, biking for 45 minutes will loose 450 calories, 10 calories per minute.  Maybe half way during the 45 minutes Spencer will take the 15 minute rest. This brings the biking trip 60 minutes.

8 0
4 years ago
8 1/3 33/4 8.287 8.29 order from least to greatest
valina [46]

Answer:

33/4 - 8.287 - 8.29 - 8 1/3

----------------------------------------------------------------------------------------------------------------

pls can i get brainliest it took soo long to figure out

7 0
3 years ago
What is the area of this figure?​
Kipish [7]

Answer:

Area is measured in "square" units. The area of a figure is the number of squares required to cover it completely, like tiles on a floor. Area of a square = side times side. Since each side of a square is the same, it can simply be the length of one side squared.

Step-by-step explanation: hope this helps

4 0
3 years ago
(-3) - (-7) pls show your work​
anyanavicka [17]

Answer:

4

Step-by-step explanation:

-3-(-7) is the same as -3+7, which is also the same as 7-3, which is equal to 4

3 0
3 years ago
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