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3 years ago

Tara's car accelerated from 10 miles per hour to 70 miles per hour in 12 seconds.

Mathematics

2 answers:

Vera_Pavlovna [14]3 years ago

8 0

5 miles per hour is correct

Ivahew [28]3 years ago

6 0

You would subtract 70-10 and get 60. Then do 60/12. That gives you 5 mphps

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Lois makes customised tee-shirts. She advertises and receives orders through her own website. She buys blank tee-shirts for $1 e

Kay [80]

Lois will sell her tee-shirt for $13.20

The percentage profit = $\frac{profit}{cost price}$ × 100

Profit = Selling price - cost price

Cost price is the total amount expended in making the tee-shirts

cost price includes cost of buying blank shirt , cost of fabric paint and amount Lois pay herself

cost of buying blank shirt = $1

cost of fabric paint = $1

amount Lois pay herself = $1\frac{1}{2}$ x $6

$\frac{3}{2}$ x $6 = $9

Total cost price = $1 + $1 + $9 = $11

0.2 = $\frac{profit}{11}$

profit = 11 x 0.2 = $2.2

$2.20 = selling price - $11

selling price = $11 + 2.20 = $13.20

To learn more about selling price, please check : brainly.com/question/15533091?referrer=searchResults

3 0

3 years ago

Given that sinΘ = 1/2 and that Θ lies in quadrant II, determine the value of cosΘ.

amm1812

With $\theta$ in quadrant II, we expect to have $\cos\theta$ . Then

$\cos^2\theta+\sin^2\theta=1\implies\cos\theta=-\sqrt{1-\sin^2\theta}$

$\implies\cos\theta=-\dfrac{\sqrt3}2$

7 0

3 years ago

7 times as much as the sum of 1/3 and 4/5

Aliun [14]

The sum of 1/3 and 4/5 is 17/15 because I turned the fractions into fractions with common denominators.

7 x 17/15 is 119/15 or 7 14/15. You do whole number x numerator and leave the denominator so you get 119/15. The answer is 7 14/15 :)

5 0

3 years ago

The distance around a circle is 37.7 meters long. what is the diameter of the circle?

aksik [14]

Ok so we know that the distance around the circle (or circumference) is equal to the diameter times pi.
This means that
$37.7 = \pi \times d$
d being the diameter,

This means that:
$d = \frac{37.7}{\pi}$
= 12.00028271
= 12 m

So the diameter of the circle is 12 metres.

Hope this helped

6 0

4 years ago

Sally knows the number of hours worked per week for five of the her employees is

steposvetlana [31]

sixth person work per week=47 hours

Average:

The average is defined as the mean value which is equal to the ratio of the sum of the number of a given set of values to the total number of values present in the set

Given :

the number of hours worked per week for five of her employees is

30, 30, 38, 35, and 30.

the average work of 6 employees is 35 hours per week

Solution :

Let, Total work per week= S

sixth person work per week=x

Total work per week= Number of people x average working hour

S= 35(6) = 210..(1)

S = 30+30+38+35+30+x

S= 163+x..(2)

By equation 1 and equation 2

210= 163+x

210-163=x

47=x

sixth person work per week=47 hours

More details:brainly.com/question/2906096

#SPJ9

3 0

2 years ago