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2 years ago

Write and solve a proportion to answer the question. 30% of what number is 9?

Mathematics

2 answers:

Vikentia [17]2 years ago

8 0

Answer:

The answer would be 30.

Step-by-step explanation:

Calculating 9×100÷30 equals 30 and that would be your answer.

miv72 [106K]2 years ago

6 0

Answer:

Step-by-step explanation:

30% * x = 9

x = 9/30%

x = 9/0.3

x = 30.

So, 30 is the number

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lisabon 2012 [21]

The answer is 100 mL.

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2 years ago

I am stuck, please help

ASHA 777 [7]

Answer:

2323

Step-by-step explanation:

Mental math means to find a way to do this problem in your head without using paper, pencil or a calculator.

The question says there are 23 classes and each class is to collect 101 items.

The equation would be 23 x 101.

To do this in your head real quick, make the numbers easier to multiply.

Make the 101 items 100. That means you are telling each class to collect 1 less item or 23 less items total.

You can do this in your head real quick. 23 classes collecting 100 items is 2300 items.

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2 years ago

The coordinates on a map for City A are (57, 11) and those for City B are (121, 79). Note that coordinates represent miles. Find

Juliette [100K]

Answer:

93 miles

Step-by-step explanation:

Use the distance formula:

d = $\sqrt{(x2 - x1)^2 + (y2 - y1)^2}$

Plug in the values:

d = $\sqrt{(121 - 57)^2 + (79 - 11)^2}$

d = $\sqrt{4096 + 4624}$

d = $\sqrt{8720}$

d = 93.4

= 93 miles

4 0

3 years ago

Read 2 more answers

The perimeter of the triangle below is 97 cm.

Sloan [31]

Answer:

The length of EF = x = 18 cm

Option A is correct.

Step-by-step explanation:

Ware given perimeter of triangle = 97 cm

We need to find length of EF = x = ?

The length of EG = x+7

The length of EF = x

The length of GF = 3x

The formula used is: $Periemter \ of \ triangle= Sum \ of \ all \ sides \ of \ triangle$

Putting values and finding x i.e length of EF

$Periemter \ of \ triangle= Sum \ of \ all \ sides \ of \ triangle\\97=x+7+x+3x\\97-7=5x\\5x=90\\x=\frac{90}{5}\\x=18 \ cm$

So, value of x=18 cm

The length of EF = x = 18 cm

Option A is correct.

4 0

3 years ago

Mike has 8 feet of rope . How many inches of rope does he have.

Ostrovityanka [42]

96 in. of rope.
8x12=96

4 0

3 years ago

Read 2 more answers

Write and solve a proportion to answer the question. 30% of what number is 9? ​

Write and solve a proportion to answer the question. 30% of what number is 9?