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2 years ago

15

Plzzzz help me ppl maths

1 answer:

erica [24]2 years ago

4 0

$(m + 7)(m + 3) \\ m(m + 3) + 7(m + 3) \\ m {}^{2} + 3m + 7m + 21 \\ m {}^{2} + 10m + 21$

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In statistics, the middle value of an ordered set of values is called what?

zaharov [31]

This is called the median.

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3 years ago

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.

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

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:

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

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

Read more about distance and rates at:

brainly.com/question/24659604

4 0

3 years ago

The ratio of the angle measures in a triangle is 3 : 5 : 7. What are the measures of the angles of the triangle?

NeTakaya

Answer:

36, 60, 84

Step-by-step explanation:

3+5+7=15

180/15=12

12*3=36

12*5=60

12*7=84

8 0

2 years ago

A business owes $8000 on a loan. Every month, the business pays 12 of the amount remaining on the loan.

steposvetlana [31]

<span>$125 is to be paid during the 6th month.</span>

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3 years ago

The circle graph shows the results of a survey by a bakery on which of their new products 105 customerspreferred most. How many

Katen [24]

If 105 customers were the total, and 35% prefers cake, we must calculate 35% of 105, then we must do 105 multiplied by 35%, we can doit transforming the 35% in the fraction notation:

$35\%=\frac{35}{100}$

And the multiplication

$105\cdot\frac{35}{100}=36.75$

Therefore, if we round it to the nearest whole number, the number of customers that prefer cake is 37.

37 customers prefer cake.

4 0

1 year ago