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Marina CMI [18]
3 years ago
13

A jacket that reguraly costs $40 is on sale for $32 what percent of decrease was in the price of the jacket

Mathematics
2 answers:
Scorpion4ik [409]3 years ago
4 0
Use the formula (new price-old price) / old price

32-40=-8
-8/40=-20%

the percent difference is 20%

the negative means it was a markdown
lawyer [7]3 years ago
3 0
Original price: $40
Sale Price: $32
Total changes: $8
Take the amount increase/decrease and times divide by the original amount and times by 100
8/40=.2 x 100= 20%
or 10% of 40 is 4
20% of 40=8
so The percent was 20%
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Answer:

3. Standard deviation is the square root of the variance.

4. Standard deviation is useful because it has the same units as the underlying data.

Step-by-step explanation:

3. In statistics, the dispersion in a given data with respect to its mean distribution can be determined or measured by standard deviation and variance. The standard deviation of a distribution can also be determined as the square root of variance.

4. Standard deviation is measured in the same units as that of the original data. Thus it has the same units as the underlying data.

5 0
3 years ago
Please answer! will give 5 stars, brainliest (if two people answer.), 20 pts, and thanks.
Charra [1.4K]

Answer:

66

Step-by-step explanation:

Angle 2 and 4 are supplementary, so if angle 4 is 123, then 180-123=57.

So angle 2 is 57.

Then, if angle 2 and 3 are 57 and we know that all angles of a triangle have to add up to 180, then:

                             57+57+angle 1=180

                                114+ angle 1=180

                                        angle 1= 66

3 0
2 years ago
Find the vertex of the parabola whose equation is y = x 2 + 8x + 12. (-4, 12) (-4, -4) (0, -6)
dsp73

The answer should be (-4,-4)


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5 0
3 years ago
If the perimeters of each shape are equal, which equation can be used to find the value of x? A triangle with base x + 2, height
Tju [1.3M]

Correct question :

If the perimeters of each shape are equal, which equation can be used to find the value of x? A triangle with base x + 2, height x, and side length x + 4. A rectangle with length of x + 3 and width of one-half x. (x + 4) + x + (x + 2) = one-half x + (x + 3) (x + 2) + x + (x + 4) = 2 (one-half x) + 2 (x + 3) 2 (x) + 2 (x + 2) = 2 (one-half x) + 2 (x + 3) x + (x + 2) + (x + 4) = 2 (x + 3 and one-half)

Answer: (x + 2) + x + (x + 4) = 2 (one-half x) + 2 (x + 3)

Step-by-step explanation:

Given the following :

A triangle with base x + 2, height x, and side length x + 4 - - - -

b = x + 2 ; a = x ; c = x + 4

Perimeter (P) of a triangle :

P = a + b + c

P =( x + 2) + x + (x + 4) - - - (1)

A rectangle with length of x + 3 and width of one-half x

l = x + 3 ; w = 1/2 x

Perimeter of a rectangle (P) = 2(l+w)

P = 2(x+3) + 2(1/2x)

If perimeter of each same are the same ; then;

(1) = (2)

(x + 2) + x + (x + 4) = 2(x+3) + 2(1/2x)

7 0
3 years ago
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