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djyliett [7]
3 years ago
15

Factorise fully -14x - 8ease do quick, will mark brainiest!​

Mathematics
2 answers:
DIA [1.3K]3 years ago
8 0

Answer:

<h2>2(-7x -4)</h2>

Step-by-step explanation:

- 14x - 8

Write -8 as -4×2

- 14x + 2 \times 4

Factor out common term : 2

2( - 7x - 4)

OleMash [197]3 years ago
5 0

Answer:

-2( 7x+4)

Step-by-step explanation:

-14x - 8

Factor out -2

-2*7x -2*4

-2( 7x+4)

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The mayor is interested in finding a 98% confidence interval for the mean number of pounds of trash per person per week that is
saul85 [17]

Solution :

Given :

Sample mean, $\overline X = 34.2$

Sample size, n = 129

Sample standard deviation, s = 8.2

a. Since the population standard deviation is unknown, therefore, we use the t-distribution.

b. Now for 95% confidence level,

   α = 0.05, α/2 = 0.025

  From the t tables, T.INV.2T(α, degree of freedom), we find the t value as

  t =T.INV.2T(0.05, 128) = 2.34

  Taking the positive value of t, we get  

  Confidence interval is ,

  $\overline X \pm t \times \frac{s}{\sqrt n}$

 $34.2 \pm 2.34 \times \frac{8.2}{\sqrt {129}}$

 (32.52, 35.8)

 95% confidence interval is  (32.52, 35.8)

So with $95 \%$ confidence of the population of the mean number of the pounds per person per week is between 32.52 pounds and 35.8 pounds.

c. About $95 \%$ of confidence intervals which contains the true population of mean number of the pounds of the trash that is generated per person per week and about $5 \%$ that doe not contain the true population of mean number of the pounds of trashes generated by per person per week.  

4 0
2 years ago
Evaluate t Divided 3/4 for T equal 9 3/4
Molodets [167]
T / 3/4 ; t = 9 3/4

9 3/4 / 3/4

9 3/4 = 39/4

39/4 / 3/4
39/4 x 4/3
39 x 4 = 156
4 x 3 = 12
156/12 / 4/4 = 39/3 = 13
7 0
3 years ago
Find the missing side.
schepotkina [342]

Answer:

2 units

Step-by-step explanation:

x= 2×4/4 = 2 units

5 0
2 years ago
Will somebody help me understand this better?
Dima020 [189]
I think what ur sopposed to do is multiply all the numbers+ find out what number the letters are then multiply that with the other numbers, if that makes sence
7 0
2 years ago
I need this done by tonight<br> I will good rating+good reward if correct
Slav-nsk [51]

Answer:

A. biased because if people are leaving a fast food restaurant, they are more likely to eat fast food restaurants than if you were to survey them in a more random setting.

B. Representative because her eggs came from multiple sample spaces.

C. biased because the tallest corn stalk is expected to have more ears.

4 0
3 years ago
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