What is the formula of 20 is 4% of what number. How do you get the whole number

Mathematics

2 answers:

lutik1710 [3]2 years ago

6 0

Well we know 4% is just 4/100.

So 20 = 4/100.

Let's find out what 1/100 is and multiply that by 100:

20/4 = 5.

So 1/100 = 5.

5*100 = 500.

lesantik [10]2 years ago

4 0

Answer:

.04 * x = 20

x = 500

Step-by-step explanation:

4% is just 4/100 or .04

Let's solve your equation step-by-step.

0.04x=20

Step 1: Divide both sides by 0.04.

0.04x / 0.04 = 20 / 0.04

x=500

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Ierofanga [76]

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3 years ago

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Luba_88 [7]

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2 years ago

Janice is 7 years older than Tam. Complete the table, and then graph this situation.

qwelly [4]

Answer:

The table in the exercise can be completed with the next results:

x y
2 9
4 11
6 13
8 15

Step-by-step explanation:

As in the exercise Janice is 7 years older than Tam, to obtain the result in the table, you must add 7 to each age in the column x, with this we can make the next formula:

y = x + 7

Remember that x is Tam's age, and y is Janice's age, so, you must replace the x variable in each case to obtain the result to y:

When x is 2:

y = 2 + 7
y = 9

When x is 4:

y = 4 + 7
y = 11

When x is 6:

y = 6 + 7
y = 13

When x is 8:

y = 8 + 7
y = 15

At last, to obtain the graph you can use the formula made: y = x + 7, and you'll obtain a graph like the attached picture, where each time x obtain a unit, the y variable obtain a unit too maintaining the diference of 7.