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3 years ago

Cara can ride her bike 6 miles in 24 minutes. Which ratio shows the number of miles to minutes Cara can ride her bike?

Mathematics

1 answer:

-BARSIC- [3]3 years ago

6 0

Answer:

1:4

Step-by-step explanation:

24/2=12

6/2=3

12/3=4

3/3=1

So the ratio is 1:4

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In a parking lot there are motorcycles and cars. You count 98 wheels, and your friend counts 30 vehicles. How many cares are the

nata0808 [166]

Car normally has 4 wheeles
motorcycles normall have 2 wheels

c=cars
m=motorcycles

4c+2m=98
c+m=30

multiply second equation by -2 and add to the original equaiton

-2c-2m=-60
4c+2m=98 +
2c+0m=38

2c=38
divide 2
c=19
sub

c+m=30
19+m=30
m=11

11 motorcycles
19 cars

3 0

3 years ago

Read 2 more answers

How do I solve 2/ (sqrt3 -1) ?

nordsb [41]

√3-1

after subtracting one from √3 and dividing two you get √3-1

4 0

3 years ago

3,394 divided by 42

almond37 [142]

Answer:

80.80

Step-by-step explanation:

3394/42 simplified would be 1697/21

as a mixed form it would be 80 and 17/21

As a decimal, 80.809...

Hope this helps :)

6 0

4 years ago

The 7th grade class experienced a 15% decrease in enrollment. Last year, the 7th grade class had 280 students. How many students

Monica [59]

238 students are enrolled in the 7th grade class this year

<u>Solution: </u>

Given that

Percentage decrease in number of students enrolled in 7th grade = 15%

Number of students enrolled last year = 280

Need to determine number of students enrolled in 7th grade this year.

Lets assume number of students enrolled this year = x

<em>Percentage decrease in enrollment </em>= (Number of student enrolled last year – Number of students enrolled this year) whole divided by number of students enrolled last year multiplied by 100

$\begin{array}{l}{\Rightarrow 15=\frac{280-x}{280} \times 100} \\\\ {=>15 \times 280=28000-100 x} \\\\ {=>100 \mathrm{x}=28000-4200=23800} \\\\ {\Rightarrow x=\frac{23800}{100}} \\\\ {\Rightarrow x=238}\end{array}$

Hence number of students enrolled this year = 238.

7 0

3 years ago

(3х + 4) - (х + 2) =

Rina8888 [55]

The answer to (3x + 4) - (x + 2) is

2(x + 3).

(3x + 4) - (x + 2) = 2(x+3)

4 0

3 years ago

Read 2 more answers