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1 year ago

In a sentence.

Mathematics

1 answer:

Allisa [31]1 year ago

8 0

Answer:

Kelsey can buy 9 books.

Step-by-step explanation:

If Kelsey wants to buy as much books as possible with 30$, multiply 3$ by 9 (books) which is 27$.

30$-27$ is 3$ so she will have 3$ extra dollars to use for shipping. 2$ is the price for shipping so she will have an extra dollar.

<em>I hope this was helpful! :) (Please rate/heart this if helpful)</em>

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Peter decided to buy a new car. He made a $2,160 down payment and then took a 48-month loan. The total amount for the car, plus

Serga [27]

16560-2160=14400
14400/48=$300/mo
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4 0

3 years ago

Read 2 more answers

Please help! Thanks in advance.

alukav5142 [94]

In this problem, we need to plug in the given x values for $f(x)=0$ and find a and b.

When we plug in 1, we get: $2 \times {1}^{4} - 5 \times {1}^{3} - 14 \times {1}^{2} + a \times 1 + b = 0$

Simplify:
$2 - 5 - 14 + a + b = 0$
$- 17 + a + b = 0$
$a + b = 17$

We got our first statement about the values of the variables. If we find one more we can find those 2 variables.

We have another given root: 4.

Plug it in:
$2 \times {4}^{4} - 5 \times {4}^{3} - 14 \times {4}^{2} + a \times 4 + b = 0$
$512 - 320 - 224 + 4a + b = 0$
$- 32 + 4a + b = 0$
$4a + b = 32$

Now we have our second one. We can combine them:
$a + b = 17 \\ 4a + b = 32$

I use elimination method which is easier here.

Multiply the top equation by -1: $- a - b = - 17 \\ 4a + b = 32$

Add them up:
$3a = 15$

Simplify:
$a = 5$

Now we have a, we can plug in one of those equations to find b:
$5 + b = 17$
$b = 17 - 5$
$b = 12$

So, the answers are $a=5$ and $b=12$ .

6 0

3 years ago

the pillars of a temple are cylindrically shaped.of each pillar has a circular base of radius 280 cm and height of 10 m how much

Damm [24]

Answer:

3446.464 m³

Step-by-step explanation:

280 cm=2.8 m

S=πr²×h×14

=3.14×2.8²×10×14

=3446.464 m³

5 0

3 years ago

What is the lower extreme and the upper extreme of the numbers 45, 51, 53, 55, 55, 65, 75, 81, 84, 87, 93, 93, 95, 96, 100

Greeley [361]

The lower extreme is the least value in the data set and the upper extreme is the greatest value. These two values can therefore be found directly from an ordered set of data.
Lower extreme is 45
Upper extreme is 100
Good luck

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2 years ago

Ir<br> Coffee costs $9 per pound. How much does 600 pounds of coffee cost?

vitfil [10]

Answer:

11.400 dollars... is the answer

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2 years ago

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