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3 years ago

you and a friend tutor for a total of 12 hours. use the tape diagram to find how many hours you tutor.

Mathematics

1 answer:

Semenov [28]3 years ago

7 0

You tutor 9 hours and you friend tutors for 3, i believe

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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

B. subtract polynomials: (3x-5-7x^2) - (-2+6x^2-5x)

yaroslaw [1]

Answer:

8x-7x^2-39

Step-by-step explanation:

4 0

3 years ago

Thea scored an average of 13 points per game in her first 5 basketball games. In her 6th game, the average changed to 17 points

sammy [17]

Average of 5 games = 13
Total of 5 games = 13 x 5 = 65

Average of 6 games = 17
Total of 6 games = 102

6th game = 102 - 65 = 37

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Answer: Her score for the 6th game as 37.
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6 0

3 years ago

Help me with this pls

AleksandrR [38]

Answer:

% 12626373893 /282828292

3 0

3 years ago

Lana is planting a garden that is going to have an area of 432 square feet. She wants the length of the garden to be 3 times the

Pavlova-9 [17]

Answer: 108 feet

Step-by-step explanation:

Area of a rectangle = l x w

432 = 3x + x

432 = 4x

432 /4 = x: x = 108 = width

6 0

3 years ago

you and a friend tutor for a total of 12 hours. use the tape diagram to find how many hours you tutor. ​

you and a friend tutor for a total of 12 hours. use the tape diagram to find how many hours you tutor.