3 years ago

Multiply or divide as indicated. X^-3•x^7

Mathematics

1 answer:

user100 [1]3 years ago

4 0

Answer: X^4 you just subtract or add with exponents

Step-by-step explanation:

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the diameters of Douglas firs grown at a Christmas tree farm are normally distributed with a mean of 4 inches and a standard dev

aksik [14]

Answer:

Proportion of the trees will have diameters between 2 and 6 inches = 0.8164

Step-by-step explanation:

Given -

Mean $(\nu )$ = 4

Standard deviation $(\sigma )$ = 1.5

Let X be the diameter of tree

proportion of the trees will have diameters between 2 and 6 inches =

$P(2< X< 6)$ = $P(\frac{2 - 4 }{1.5}< \frac{X - \nu }{\sigma}< \frac{6 - 4 }{1.5})$

= $P(\frac{-2 }{1.5}< Z< \frac{2 }{1.5})$ Put [ $Z = \frac{X - \nu }{\sigma}$ ]

= $P(-1.33< Z< 1.33)$

= $(Z< 1.33) - (Z< -1.33)$

= .9082 - .0918

= 0.8164

6 0

3 years ago

(3x + 2y = 7<br> (7x-2y = 3

sineoko [7]

Answer for the equation by elimination

8 0

2 years ago

PLEASE HELP ME!

Westkost [7]

Answer:

75.09%

Step-by-step explanation:

1st week: 1060

2nd week: 950

3rd week: 1090

4th week: 795

Percent decrease from first to fourth week is 75.09%

Hope this helps!

Plz Mark Brainliest!

5 0

3 years ago

Help, this is due tonight!

Dovator [93]

Answer:

x=18

QR=29

RS=29

QS=29

Step-by-step explanation: 2X-7=5x-61=x+11 solve for x since all sides are equal

5 0

3 years ago

If you cut a 12-inch loaf of bread into1/2 -inch slices, you would have <br> slices of bread.

storchak [24]

You would have two six-inch slices of bread

8 0

3 years ago

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