what happens to the standard deviation and mean when you add a value to the data set that is equal to mean

The table shows periodic data. Use the drop down menus to find the phase shift. y = 2 cosine(pi/4(x-c)) + 3. The function is shi

Diano4ka-milaya [45]

Answer:

right and -1

Step-by-step explanation:

3 0

3 years ago

The price of a pair of jeans at a store increased by 25% to $40. Find the price of the pair of jeans before the increase

Katen [24]

First you gotta look for the value of the 25% in the 40$ So it will be
25&=0.25
0.25x40=10
Now all you gotta do it’s
40-10=30
You subtract becaus le they ask you to find the price before it was increased so that why you gotta subrtract it

7 0

3 years ago

Suppose the length of the base b of a rectangle is increased by 20 percent and the length of the altitude h is increased by 40 p

jek_recluse [69]

9514 1404 393

Answer:

(a) 1.2b

(b) 1.4h

(c) A = 1.68bh

(d) 68%

Step-by-step explanation:

(a) If 20% of b is added to b, you have ...

b + 0.20b = 1.2b

__

(b) Similarly, if 40% of h is added to h, you have ...

1.4h

__

(c) The area of the new rectangle is the product of the new dimensions:

A = (1.2b)(1.4h)

A = 1.68bh

__

(d) The original rectangle area is A = bh, so the percentage change can be computed as ...

(A'/A -1)×100% = ((1.68bh)/(bh) -1)×100% = (1.68 -1)×100% = 68%

The given increases in base and height increase the area by 68%.

5 0

3 years ago

A 14 foot ladder makes a 62° angle with the ground. To the nearest foot,how far up the house does the ladder reach?

yarga [219]

Check the picture below.

make sure your calculator is in Degree mode.

8 0

3 years ago

Jeanine Baker makes floral arrangements. She has 11 different cut flowers and plans to use 7 of them. How many different selecti

Alex Ar [27]

Answer:

<h2>330 different possible selections are there.</h2>

Step-by-step explanation:

There is a total of 11 cut flowers.

Jeanine Baker has to choose 7 flowers among the 11 flowers.

The formula for choosing r numbers from n numbers is defined by $^{n}C_{r} = \frac{n!}{r!\times(n - r)!}$ , n > r.

From 11 flowers 7 flowers can be chosen in $^{11} C {7} = \frac{11!}{7!\times4!} = \frac{8\times9\times10\times11}{2\times3\times4}.$ = 330 ways.

There are 330 possible ways to choose 7 flowers from 11 flowers.

6 0

3 years ago