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3 years ago

Solve the following inequaltity. (x-8)^2(x+7)>0 What is the solution?

Mathematics

1 answer:

GREYUIT [131]3 years ago

8 0

$(x-8)^2(x+7)>0 \\x\in(-7,8)$

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3.5+2=2x-10help me HELP ME JIGGABOOS

Genrish500 [490]

3.5 + 2 = 2x - 10
5.5 = 2x -10
+10 +10
—————————
15.5 = 2x
—— ——
2 2

7.75 = x

7.75 is the answer

5 0

10 months ago

an 8 by 10 inch piece of cardboard cost $ 2.00. if the cost of the cardboard is proporcional to its area what is the cost of pie

denis23 [38]

Answer: $4

The cost of an 8x10 piece is $2, and 16x20 is just 2 times that amount, multiply the cost.

7 0

3 years ago

Q4.

goblinko [34]

The coding of the statistic is used to make it easier to work with the large sunshine data set

The mean of the sunshine is 3.05 $\overline 6$

The standard deviation is approximately 18.184

Reason:

The given parameters are;

The sample size, n = 3.

∑x = 947

Sample corrected sum of squares, Sₓₓ = 33,065.37

The mean and standard deviation = Required

Solution:

$Mean, \ \overline x = \dfrac{\sum x_i}{n}$

The mean of the daily total sunshine is therefore;

$Mean, \ \overline x = \dfrac{947}{30} \approx 31.5 \overline 6$

$s = \dfrac{x}{10 } - \dfrac{1}{10}$

$E(s) = \dfrac{Ex}{10 } - \dfrac{1}{10}$

$E(s) = \dfrac{31.5 \overline 6}{10 } - \dfrac{1}{10} = 3.05 \overline 6$

The mean ≈ 3.05 $\overline 6$

Alternatively

, $The \ mean \ of \ the \ daily \ total \ sunshine, \, s = \dfrac{31.5 \overline 6 - 1}{10 } = 3.05\overline 6$

The mean of the daily total sunshine, $\overline s$ ≈3.05 $\overline 6$

$Var(s) = Var \left(\dfrac{x}{10 } - \dfrac{1}{10} \right)$

$Var(s) = \left(\dfrac{1}{10}\right)^2 \times Var \left(x \right)$

Therefore;

$Var(s) = \left(\dfrac{1}{10}\right)^2 \times 33,065.37 = 330,6537$

Therefore;

$s = \sqrt{330.6537} \approx 18.184$

The standard deviation, $s_s$ ≈ 18.184

Learn more about coding of statistic data here:

brainly.com/question/14837870

3 0

2 years ago

The number in front of the decimal point represents part of a unit while the

posledela

Answer:

False

Step-by-step explanation:

Because the numbers before the decimal is the whole number and the ones after arn't

6 0

2 years ago

Charmaine's Coffee shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Charmaine $5.75 per pound, a

DIA [1.3K]

Type A = $5.75 per pound
Type B = $4.55 per pound

1 set → 1 pound of Type A + 4 pounds of type B
1 set → 5.75 + 4(4.55)
1 set → $23.95

Number of sets = $526.90 ÷ 23.59 = 22

1 set → 1 pound of Type A
22 sets → 1 x 22 = 22 pounds of type A

Answer: 22 pounds of Type A

5 0

3 years ago