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3 years ago

Evaluate this expression when x= 8 and y= 2: −2x2+3xy+y2

Mathematics

1 answer:

Monica [59]3 years ago

6 0

Answer:

This is the answer:

=20

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State if each pair of ratios forms a proportion 12/24 and 3/4

raketka [301]

Answer:

Step-by-step explanation:

12/24 reduces to 1/2, whereas 3/4 does not reduce. This pair of ratios does not form a proportion.

If both ratios reduced to the same common value, that would represent a proportion.

4 0

2 years ago

Read 2 more answers

12. Ms. Smith keeps eight different cookbooks on a shelf in one of her kitchen cabinets. How many ways can the eight cookbooks b

Ghella [55]

Answer:

The number of ways are 40320.

Step-by-step explanation:

Consider the provided information.

Ms. Smith keeps eight different cookbooks on a shelf in one of her kitchen cabinets.

We need to determine the number of different ways to put eight cookbooks on the shelf.

We need to select 8 cookbooks taking 8 at a time.

So use the permutation formula: $^{n}P_{n}$

Substitute n=8 and simplify.

$^8P_8=\frac{8!}{(8-8)!}\\8!=40320$

Hence, the number of ways are 40320.

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3 years ago

Jay evaluated the expression 3x(3+12 dived by 3)-4. For his first step, he added 3+12 to get 15. What was Jay's error? Find the

sp2606 [1]

Bidmas, division before addition3x(3+12/3)-4 = 3x(3+4)-4 = 21-4 = 17

6 0

2 years ago

Read 2 more answers

What is the domain of this function?

noname [10]

It is B my friend I worked it out non problem

5 0

3 years ago

Can someone please help me??? ahhh

pishuonlain [190]

Volume of the cylinder

$= \pi {r}^{2} h$

r = 4

h = 9

Volume

$= \pi \times {4}^{2} \times 9 \\ = 3.14 \times 16 \times 9 \\$

<h2> $= {452.16}^{3}$ </h2><h3>Option A is the correct answer </h3>

Hope this will help....

8 0

2 years ago