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Soloha48 [4]
3 years ago
8

0.9<2x-0.7<1.5

2x - 0.7 < 1.5" alt="0.9 < 2x - 0.7 < 1.5" align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
Nitella [24]3 years ago
3 0

Answer:

0.8<x<1.1

Step-by-step explanation:

Take 0.9<2x-0.7<1.5 add everything by 0.7 to get 1.6<2x<2.2 then divide everything by 2 to get 0.8<x<1.1

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Solve the inequality and graph the solution<br> 7x ≥ -91
Alex Ar [27]

The solution is x \geq 13.

Solution:

Given inequality:

7 x \geq 91

Divide by 7 on both sides.

$\frac{7 x}{7} \geq \frac{91}{7}

x \geq 13

The solution is x \geq 13.

The image of the graph is attached below.

5 0
3 years ago
Alpha false and true Which of the following statements are true? If false, explain briefly.
solmaris [256]

Answer:

A. False

B. True

C. True

D.True

Step-by-step explanation:

A. False . The significance level or alpha is the probability of rejecting the null hypothesis when it is true. For example, a significance level of 0.05 indicates a 5% risk of concluding that a difference exists when there is no actual difference. 0.01 alpha is better than 0.05 alpha . 0.01 indicate a 1% risk of rejecting the null hypothesis when it is true .

B. True . If the p-value is less than alpha, we reject the null hypothesis . Therefore statistically significant.

C . True . If the p-value is less than alpha, we reject the null hypothesis

D. True . Alpha will be greater than p-value . Therefore we will reject .

8 0
3 years ago
: In a marketing survey, a random sample of 730 women shoppers revealed that 628 remained loyal to their favorite supermarket du
scoundrel [369]

Answer:

The point estimate for p is 0.86.

Step-by-step explanation:

We are given that in a marketing survey, a random sample of 730 women shoppers revealed that 628 remained loyal to their favorite supermarket during the past year (i.e. did not switch stores).

Let p = <u><em>proportion of all women shoppers who remain loyal to their favorite supermarket</em></u>

Now, the point estimate for the population proportion (p) is represented by ;

      Point estimate for p =  \hat p  =  \frac{X}{n}

where, X = Number of women shoppers who remained loyal to their favorite supermarket during the past year = 628

            n = sample of women shoppers = 730

So, <u>point estimate for p</u> (\hat p)  =  \frac{X}{n}  

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4 0
3 years ago
If the markup rate is 50%, then the cost of a shirt that regularly sells for $60 is $40. true or false?​
Natasha2012 [34]

Answer:

false

Step-by-step explanation:

half of 60 dollars is 30

think of it as half of 6

5 0
3 years ago
I need some answers be quick pls. If you get it right I will give you brainliest
kipiarov [429]

Step-by-step explanation:

multiple the power and real number

7 0
3 years ago
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