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3 years ago

What is 2.1 as a fraction?

Mathematics

1 answer:

german3 years ago

7 0

2 1/10 because the 1 in 2.1 is in the tenth place

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If there are approximately 1.8 million cars in Vancouver and if each car travels an average of 17,500 kilometres in a year, how

Goryan [66]

Rates are used to measure a quantity over another.

The 1.8 million cars use $1.85 \times 10^{10}$ liters each year

Given

$Cars = 1.8\ million$

$d = 17500km$ --- distance

$r = 40miles/gallon$

First, we calculate the number (n) of gallons used by each car

$r = \frac{d}{n}$

Solve for n

$n = \frac{d}{r}$

So, we have:

$n = \frac{17500km}{40miles/gallon}$

$n = \frac{17500km}{40miles}gallon$

Convert miles to kilometers

$n = \frac{17500km}{40km \times 1.60934}gallon$

$n = \frac{17500km}{64.3738km}gallon$

$n = 271.85\ gallon$

The number of gallons (N), used by all the cars is:

$N = n \times cars$

$N = 271.85 \times 1.8\ million$

$N = 489330000$

Convert to liters

$N = 489330000 \times 3.78541L$

$N = 1852314675.3L$

In scientific notation to 2 decimal places, we have:

$N = 1.85 \times 10^{10}L$

Hence, the number of liters used is $1.85 \times 10^{10}$

Read more about distance and rates at:

brainly.com/question/24659604

4 0

3 years ago

Alex jogs 5,000 meters twice a day. How many kilometers does Alex jog each day?

murzikaleks [220]

1 kilometer = 1000 meters

5000 meters / 1000 = 5 kilometers

5 kilometers x 2 times per day = 10 kilometers per day.

answer: D) 10 kilometers

3 0

2 years ago

2/3 to the fourth power

Stella [2.4K]

The correct answer is 16/81. Hope this helps.

5 0

3 years ago

Read 2 more answers

I feel like it’s either answer 2 or 4. i just don’t understand the -9 part

harina [27]

Answer:

n < 27

Step-by-step explanation:

let the number be n

$\frac{1}{3} n - 3 < 6 \\ add \: 3 \: to \: both \: sides \\ \frac{1}{3}n - 3 + 3 < 6 + 3 \\ \frac{1}{3} n < \\ 9 \\ multiply \: both \: sides \: by \: 3 \\ \frac{1}{3} n \times 3< 9 \times 3 \\ n < 27$

8 0

3 years ago

Which is equivalent to 216 1/3? A.3 B.6 C.36 D.72

nydimaria [60]

The 1/3 power is another way to write the cube root.
∛216 = 6

3 0

3 years ago