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3 years ago

Please explain and show work- please use correct grammar!! giving brainlest if explained

Mathematics

1 answer:

daser333 [38]3 years ago

7 0

Answer: The answer is 14

Step-by-step explanation: So, for every 5 books she gets, she gets two free. Here is a chart

5 books bought=2 free books

10 books bough=4 free books

15 books bought=6 free books

20 books bought=8 free books

25 books bought=10 free books

30 books bought=12 free books

35 books bought=14 free books

Every five books bought equals two free books, so if she buys 35 she would get 14, so 49 books in all. hope this helps :)

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A cell phone tower casts a shadow 15 feet long at the same time that a 100-foot building casts a shadow 60 feet long. How tall i

aivan3 [116]

Answer:

27 feet tall

Step-by-step explanation:

100/60

10/6

4 0

3 years ago

Solve g=5m please i need it for my math homework i am really struggling with math

serious [3.7K]

So its g=5gallonsin a Minuit

6 0

4 years ago

Helpp i really neeed it

Marizza181 [45]

Answer:

9 hours

Step-by-step explanation:

If she makes $ 20 for each car, washing 9 cars in 3 hours would get $ 180.

So she will need to work 9 hours 180 + 180 + 180, washing 9 cars in 3 hours and would get $ 540. This is enough to buy her phone and she will have a surplus of $ 120.

In summary she must work 9 hours

Hope this helps you, please give me the brainliest

7 0

3 years ago

Company earns S dollars by selling y items per week. According to the equation S(y)=−2y^2+60y+10, how many items does company ne

sp2606 [1]

Answer:

$Max = 15$

Step-by-step explanation:

Given

$s(y) = -2y^2 + 60y + 10$

Required

Determine number of items that gives maximum earnings;

The general form of a quadratic equation is:

$s(y) = ay^2 + by + c$

And the maximum is calculated as:

$Max = \frac{-b}{2a}$ If a<0

Comparing $s(y) = ay^2 + by + c$ to $s(y) = -2y^2 + 60y + 10$

We have that:

$a = -2$ $b = 60$ $c = 10$

Substitute these values to

$Max = \frac{-b}{2a}$

$Max = \frac{-60}{2 * -2}$

$Max = \frac{-60}{-4}$

$Max = 15$

<em>The number of item that maximizes the function is when y = 15</em>

7 0

3 years ago

Estimate $0.89 ×14 find each product

viva [34]

The product of $0.89 x 14 equals 12.46

5 0

3 years ago