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3 years ago

8

What scale factor was applied to the large rocket to produce the small rocket? Show your work and clearly mark your final answer

. (Remember, the small rocket is 20 cm long and the large rocket is 100 cm long).

1 answer:

Kryger [21]3 years ago

6 0

Answer:80

Step-by-step explanation:

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You are selling tickets to your school fair to raise money for the honor society. Student tickets cost $4 and adult tickets cost

inysia [295]

If 480 tickets cost $2580, 1 student ticket is $4, 1 adult is $6. Lets try dividing. 2580/6 and 2580/4. 2580/6=$430 and 2580/4=$645 again. 4 dollars per student and 6 dollars per adult. for the students, I would say approx. of 215 student tickets sold. And for the adults 215 dollars as well. to know this, I looked up multiples of them both. and 215 was the common one. So 215 adult tickets were sold and 215 student tickets were sold

4 0

3 years ago

The USDA conducted tests for salmonella in produce grown in California. In an independent sample of 252 cultures obtained from w

Marat540 [252]

Answer:

The decision rule is

Fail to reject the null hypothesis

The conclusion is

There no sufficient evidence to show that the proportion of salmonella in the region’s water differs from the proportion of salmonella in the region’s wildlife

Step-by-step explanation:

From the question we are told that

The first sample size is $n_1 = 252$

The number that tested positive is $k_1 = 18$

The second sample size is $n_2 = 476$

The number that tested positive is $k_2 = 20$

The level of significance is $\alpha = 0.01$

Generally the first sample proportion is mathematically represented as

$\^ p _1 = \frac{k_1 }{ n_1 }$

=> $\^ p _1 = \frac{18 }{ 252 }$

=> $\^ p _1 = 0.071$

Generally the second sample proportion is mathematically represented as

$\^ p _2 = \frac{k_2 }{ n_2 }$

=> $\^ p _2 = \frac{20 }{ 476}$

=> $\^ p _2 = 0.042$

The null hypothesis is $H_o : p_1 - p_2 = 0$

The alternative hypothesis is $H_a : p_1 - p_2 \ne 0$

Generally the test statistics is mathematically represented

$z = \frac{ \^ p_1 - \^ p_2 - ( p_ 1 - p_2 )}{ \sqrt{\frac{\^ p_1 (1-\^ p_1)}{ n_1 } + \frac{\^ p_2 (1-\^ p_2)}{ n_2 } } }$

=> $z = \frac{ 0.071 - 0.042 - 0 }{ \sqrt{\frac{0.071 (1-0.071)}{ 252 } + \frac{0.042 (1-\^ 0.042)}{ 476 } } }$

=> $z = 1.56$

From the z table the area under the normal curve to the right corresponding to 1.56 is

$P(Z > 1.56 ) =0.05938$

Generally the p-value is mathematically represented as

$p-value = 2 * P(Z > 1.56 )$

=> $p-value = 2 * 0.05938$

=> $p-value = 0.1188$

From the value obtained we see that $p-value > \alpha$ hence

The decision rule is

Fail to reject the null hypothesis

The conclusion is

There no sufficient evidence to show that the proportion of salmonella in the region’s water differs from the proportion of salmonella in the region’s wildlife

5 0

3 years ago

I need help with question 9

makvit [3.9K]

Answer:

f(x)=0.17x+3.00

f(60)=0.17(60)+3.00

f(60)=10.20+3

f(60)=13.20

1 hour will cost $13.20

Step-by-step explanation:

I found the difference in minutes between the given values and the difference in cost between the given values. Between 8 minutes and 25 minutes is 17, and between 25 and 40 is 15 minutes. The difference of $7.25 and $4.36 is $2.89, and the difference between $7.25 and $9.80 is $2.55. I then divided2.89 by 17 and 2.55 by 15 and both resulted in $0.17/minute. I them multiplied 8 minutes by $0.17 toget $1.36. I subtracted that from the cost given for 8 minutes to get $3.00. The $3.00 is the initial charge, or b in slope-intercept form with m=0.17. Plug in 60 for x to find the cost of an hour.

7 0

4 years ago

Factorise 16c squared + 12c

Jobisdone [24]

16c^2 + 12c

4c(4c + 3) <==

4 0

4 years ago

Read 2 more answers

What is the value of p?

guapka [62]

Answer:

61

Step-by-step explanation:

comment if you want a step-by-step

3 0

3 years ago