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icang [17]
3 years ago
7

Need help!!! Will make brainlyest!!

Mathematics
1 answer:
sweet-ann [11.9K]3 years ago
7 0

Answer:

Step-by-step explanation:

1. To find x make these 2 equations equivalent to each othe.

3x + 6 = 8x - 10

2. Subtract x terms from both sides

(3x - 8x) + 6 = (8x - 8x) - 10

3. Subtract constant from left side.

-5x + 6 = -10

-5x + (6 - 6) = (-10 - 6)

-5x = -16

4. Divide be x term from the left side.

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The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.30​, and the sample statistics
IrinaK [193]

Answer: 0.84

Step-by-step explanation:

let p be the population proportion of adults who smoked a cigarette in the past week.

As per given , we have

H_a: p

Sample size : n= 1491

The sample proportion of adults smoked a cigarette= \hat{p}=\dfrac{x}{n}=\dfrac{462}{1491}=0.30985915493\approx0.31

The test statistic for proportion is given by :-

z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}

Substitute all the values , we get

z=\dfrac{0.31-0.30}{\sqrt{\dfrac{0.30(1-0.30)}{1491}}}\\\\=\dfrac{0.01}{\sqrt{0.000141}}\\\\=\dfrac{0.01}{0.011874342087}=0.84261497731\approx0.84

Hence, the value of the test statistic = 0.84

6 0
3 years ago
Simplify the expression.
snow_tiger [21]
The answer to the question is d.
8 0
3 years ago
On Monday, Jan made withdrawals of $15, $55, and $65 from her savings account. On the same day, her twin sister Julie made withd
jeyben [28]

Answer:

340

Step-by-step explanation:

8 0
3 years ago
These lines are below are parallel if the slope of the green line is -4 what is the slope of the red line
Alja [10]

Answer:

The slope would also be -4.

Step-by-step explanation:

This is because parallel lines have the exact same slope. Since these two lines are parallel and the first has a slope of -4, the second must as well.

7 0
3 years ago
Read 2 more answers
Perry finished a 100-meter race in 7/8 of a minute. The winner of the race used 14/15 of Perry's time to finish the race. How mu
konstantin123 [22]

Answer:

49 seconds

Step-by-step explanation:

The time perry used is 7/8 of a minute

a minute equals to 60 seconds

so the time perry used is 7/8 x 60 = 52.5 seconds

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so 14/15 x 52.5 = 49 seconds

3 0
3 years ago
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