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oksano4ka [1.4K]
3 years ago
5

Last week, you finished Level 2 of a video game in 32 minutes. Today, you finish Level 2in 28 minutes. What is your percent of c

hange
Mathematics
1 answer:
Nina [5.8K]3 years ago
6 0

Answer:

12.5% decrease

Step-by-step explanation:

[(V2 - V1)  /  V1] x 100 = Percent Change

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An item is regularly priced at $40. It is on sale for 30% off the regular price. What is the sale price?
morpeh [17]

40$ - 100% (full price)

x$ - 70% (100-30=70%)

40 * 70 = 100x

2800 = 100x

x = 28

Answer 28$

or

40$ = 100%

then 1% = 40/100 = 0.4$

so 70% will be 0.4 * 70 = 28$

8 0
3 years ago
What is the correct domain and range in set notation
Kipish [7]

Answer:

The one on the middle left.

Explanation:

x goes infinitely in the positive direction.

y does not show any sign of not going infinitely positively or negatively.

7 0
3 years ago
A brick of cheese is 3/4 inch thick . A deli cuts the brick of cheese into slices that are 1/8 thick. How many 1/8 inch slices c
Vesnalui [34]
3/4 is the simplified version of 6/8. How I got this is I know that 4 goes into 8 twice so you multiply by 2. Whatever you do to the bottom you do to the top so you will get 6/8.
8 0
3 years ago
Given the following signal:  x(n) = {4, −1, 2, 5, − 2, 3}  Compute the 6-point DFT of x(n) directly from the DFT equation  −
FrozenT [24]

Answer:

Computing the 6-Point DFT of x(n), where X = 0,1,2,3,4,5

x(0) = 11

x(1) = 21/8 -j13/8

x(2) = 27/8 + j33/32

x(3) = 1139/256 + j91/256

x(4) = 4389/1024

x(5) = 4.14685 - j1379/8192

Step-by-step explanation:

See the picture for workings.

Given X(n) = { 4, -1, 2, 5, -2, 3}

Six point DFT implies that N = 6

Step 1 = write out equation X(k)

Step 2 = substitute "Wn" in the equation X(k) to give a new equation

Step 3 = when N=6, substitute for "N" in the new equation and simplify the new X(k) equation.

Step 4 = use 0, 1, 2, 3, 4, 5 in finding the DFT

4 0
3 years ago
An equation is shown below: −2(4x − 1) − 7 = 5 Which statement shows a correct next step in solving the equation? A)The equation
Yakvenalex [24]
B. The equation can become -2(4x-1)=12 by applying the addition property of equality.
5 0
3 years ago
Read 2 more answers
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