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Dvinal [7]
3 years ago
8

If 3/10 = 30/100 than 4/10 = ?/100

Mathematics
2 answers:
pychu [463]3 years ago
8 0

I'm pretty sure 4/10=40/100

Brums [2.3K]3 years ago
7 0

Here is the equation:

\frac{3}{10} = \frac{30}{100} \rightarrow \frac{4}{10}  =\frac{x}{100}

To find the missing number, you have to cross multiply. Here's the equation:

\frac{4}{10} = \frac{x}{100} \\ \\ 100 \times 4 = 10x

Multiply:

100 \times 4 = 400 \\ 400 = 10x

To leave the variable x alone, you need to divide both sides by 10

\frac{400}{10} = \frac{10x}{10}

Divide:

400 \div 10 = 40 \\ x = 40

Your answer is 40

<em>If you have any questions, feel free to ask in the comments! :)</em>

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A student draws several cards from a deck of 10 unique cards.
egoroff_w [7]

Answer:

There are 210 different ways that 4 cards can be drawn.

There are 252 different ways that 5 cards can be drawn.

There are 120 different ways that 7 cards can be drawn.

Step-by-step explanation:

Use the combination formula

10C4 =210

10C5 = 252

10C7 = 120

6 0
2 years ago
A container in the shape of this cuboid holds 2 litres of water.
zysi [14]

Given:

Volume of cuboid container = 2 litres

The container has a square base.

Its height is double the length of each edge on its base.

To find:

The height of the container.

Solution:

We know that,

1 litre = 1000 cubic cm

2 litre = 2000 cubic cm

Let x be the length of each edge on its base. Then the height of the container is:

h=2x

The volume of a cuboid is:

V=l\times w\times h

Where, l is length, w is width and h is height.

Putting V=2000,\ l=x,\ w=x,\ h=2x, we get

2000=x\times x\times 2x

2000=2x^3

Divide both sides by 2.

1000=x^3

Taking cube root on both sides.

\sqrt[3]{1000}=x

10=x

Now, the height of the container is:

h=2x

h=2(10)

h=20

Therefore, the height of the container is 20 cm.

8 0
3 years ago
The school bus Evie rides is scheduled to arrive at her bus stop at 8:20 a.m. each day. The table below shows the actual arrival
kolbaska11 [484]

Answer:

The probability of the bus getting there BEFORE 8:20 isn't likely

I took an average of all of the numbers and its shows that he bus will be there about 8:20.25

6 0
3 years ago
Which graph has a slope of 1/4?
Arte-miy333 [17]

Answer:Please include images of the graphs!

8 0
2 years ago
Read 2 more answers
Which of the following is the correct ratio for converting kilograms to grams
Brrunno [24]

Answer:

1000 Grams : 1 Kilogram or 1 Kilogram : 1000 Grams

Step-by-step explanation:

In the metric system the value of a kilogram is solved like:

Kg = \frac{g}{1000}

When converting from grams to kilograms, we solve it like:

g = \frac{kg}{0.0010000}

Let's take for example:

2 KG is how many grams?

We use the grams to kilograms formula like so:

g = \frac{2}{0.0010000}

Then we end up with:

g = 2000

6 0
3 years ago
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