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mel-nik [20]
3 years ago
13

WILL MARK BRAINLIEST!!!!

Mathematics
2 answers:
Ber [7]3 years ago
8 0

Answer:

Step-by-step explanation:

2x-3

2(21)-3

42=3

39

svetlana [45]3 years ago
6 0

Answer:

its 5

3(2x-3)=21

6x-9=21

6x=30

x=5

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john is 15 years old. john's mom takes him and his younger soster to a football game. tickets are $22 for adults and $16 for chi
oee [108]
Answer: 54$

Explanation:

Total cost = 16 + 16 + 22
Total cost = 32 + 22
Total cost = 54
7 0
3 years ago
A rectangle has an area of 45x2 − 42x − 48 and a width of 5x − 8. What is the length of the rectangle?
Irina18 [472]

Dividend

Divisor

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9x+6

3 0
3 years ago
Read 2 more answers
PLS HELPPPP!!!!! WILL GIVE BRAINLIST!!!!!!!!!!
IRISSAK [1]

Answer: C) y=-2+2

Step-by-step explanation: Rise over run says that the slope is -2 and the line hits the y axis at +2 so the equation would be y = -2 + 2.

6 0
2 years ago
Finish breaking the sentence into three separate ideas
german

Answer:

Some researchers share marleys concerns

Thier studies suggest young people gain self esteem from some books

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Step-by-step explanation:

7 0
3 years ago
According to the U.S. Bureau of the Census, the average age of brides marrying for the first time is 23.9 years with a populatio
JulsSmile [24]

Answer:

We conclude that young women are delaying marriage and marrying at a later age.

Step-by-step explanation:

We are given that the average age of brides marrying for the first time is 23.9 years with a population standard deviation of 4.2 years.

The sociologist randomly samples 100 marriage records and determines the average age of the first time brides is 24.9 years.

Let \mu = <u><em>average age of brides marrying for the first time.</em></u>

So, Null Hypothesis, H_0 : \mu = 23.9 years     {means that young women are not delaying marriage and marrying at a later age}

Alternate Hypothesis, H_A : \mu > 23.9 years     {means that young women are delaying marriage and marrying at a later age}

The test statistics that would be used here <u>One-sample z test statistics</u> as we know about the population standard deviation;

                         T.S. =  \frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }  ~ N(0,1)

where, \bar X = sample average age of the first time brides = 24.9 years

            \sigma = population standard deviation = 4.2 years

            n = sample of marriage records = 100

So, <u><em>the test statistics</em></u>  =  \frac{24.9-23.9}{\frac{4.2}{\sqrt{100} } }

                                     =  2.381

The value of z test statistics is 2.381.

<u>Now, at 1% significance level the z table gives critical value of and 2.326 for right-tailed test.</u>

Since our test statistic is more than the critical value of z as 2.381 > 2.326, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which <u>we reject our null hypothesis</u>.

Therefore, we conclude that young women are delaying marriage and marrying at a later age.

5 0
3 years ago
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