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4 years ago

Help I need a answer fast

Mathematics

1 answer:

Gnom [1K]4 years ago

4 0

Answer: L' is (2,4) M' is (3,1) N' is (0,4)

Step-by-step explanation:

For each ordered pair, you add 2 to the x (the first number, which is horizontal on the graph) and 3 to the y (the second number, which is vertical).

L is (0,1) so you add 2 to the 0 and 3 to the 1 to get L' (2,4)

M is (1,-2), so you add 2 to the 1 and 3 to the -2 to get M' (3,1)

N is (-2,1), so you add 2 to the -2 and 3 to the 1 to get N' (0,4)

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Raj builds a side table in the shape of a cube. Each edge of the cube measures 30 inches. Raj wants to cover the top and four si

storchak [24]

Answer:

Step-by-step explanation:

1 edge: 30in

top + 4 sides: 150in to be covered by tile

1 tile: 3in

How many tiles will Raj need to cover 150 inches?

3in x 50 = 150in

Therefore, Raj will need 50 ceramic tiles to cover the top and four sides of the table.

Answer:

50 tiles

(please tell me if I am wrong, but hope I helped)

8 0

3 years ago

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Kelly has 2 dimes as many quarters as dimes.She has 18 quarters.How many dimes does she have?

DedPeter [7]

She has 9 dimes Bc 9x2=18

8 0

3 years ago

Find the nth term of the sequence 7,25,51,85,127

olya-2409 [2.1K]

Let a (n) denote the n-th term of the given sequence.

Check the forward differences, and denote the n-th difference by b (n). That is,

b (n) = a (n + 1) - a (n)

These so-called first differences are

b (1) = a (2) - a (1) = 25 - 7 = 18

b (2) = a (3) - a (2) = 51 - 25 = 26

b (3) = a (4) - a (3) = 85 - 51 = 34

b (4) = a (5) - a (4) = 127 - 85 = 42

Now consider this sequence of differences,

18, 26, 34, 42, …

and notice that the difference between consecutive terms in this sequence b is 8:

26 - 18 = 8

34 - 26 = 8

42 - 34 = 8

and so on. This means b is an arithmetic sequence, and in particular follows the rule

b (n) = 18 + 8 (n - 1) = 8n + 10

for n ≥ 1.

So we have

a (n + 1) - a (n) = 8n + 10

or, replacing n + 1 with n,

a (n) = a (n - 1) + 8 (n - 1) + 10

a (n) = a (n - 1) + 8n + 2

We can solve for a (n) by iteratively substituting:

a (n) = [a (n - 2) + 8 (n - 1) + 2] + 8n + 2

a (n) = a (n - 2) + 8 (n + (n - 1)) + 2×2

a (n) = [a (n - 3) + 8 (n - 2) + 2] + 8 (n + (n - 1)) + 2×2

a (n) = a (n - 3) + 8 (n + (n - 1) + (n - 2)) + 3×2

and so on. The pattern should be clear; we end up with

a (n) = a (1) + 8 (n + (n - 1) + … + 3 + 2) + (n - 1)×2

The middle group is the sum,

$\displaystyle 8\sum_{k=2}^nk=8\sum_{k=1}^nk-8=\frac{8n(n+1)}2-8=4n^2+4n-8$

so that

a (n) = a (1) + (4n ² + 4n - 8) + 2 (n - 1)

a (n) = 4n ² + 6n - 3

4 0

3 years ago

Whoever gets this right gets brainlyess answer and it's worth 10 points :)

mart [117]

There are 42÷2=21 homes very month. As a result,21×6=126 homes every 6 months is your final answer. Hope it help!

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3 years ago

The original price of an item is $50. it is marked down 20%. what is the sale price?

KiRa [710]

The sale price would be $10 because 50*.2=10. (You move the decimal point in 20% to the left two places to = .2)

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3 years ago