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Inessa [10]
3 years ago
15

Evaluate 4t^2 divided by t for t=10

Mathematics
2 answers:
DiKsa [7]3 years ago
5 0

40

substitute t = 10 into the expression

4t² = 4 × 10² = 4 × 100 = 400

now divide by 10 → \frac{400}{10} = 40

svp [43]3 years ago
5 0

Hey there!!

In order to solve this, we will need to take a closer look at the question.

Let's rewrite this question as :

4 ( t )² / t- this makes it clear. We will just have the square the value of t not the 4.

Given :

t = 10

... 4 ( 10 )² / 10

... 4 ( 100 ) / 10

... 400 / 10

... 40

Hope my answer helps!!

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valkas [14]

Answer:

t=\frac{1.8-2}{\frac{0.5}{\sqrt{48}}}=-2.771    

The degrees of freedom are given by:

df=n-1=48-1=47  

And the p value would be:

p_v =P(t_{(47)}    

Since the p value is lower than the significance level we have enough evidence to conclude that the true mean for this case for the growth rate is less than 2cm per week

Step-by-step explanation:

Information given

\bar X=1.8 represent the sample mean for the growth

s=0.5 represent the sample standard deviation    

n=48 sample size    

\mu_o =2 represent the value that we want to compare

\alpha=0.01 represent the significance level

t would represent the statistic    

p_v represent the p value

System of hypothesis

We need to conduct a hypothesis in order to check if the true mean is less than 2cm per week, the system of hypothesis are :    

Null hypothesis:\mu \geq 2    

Alternative hypothesis:\mu < 2    

Since we don't know the population deviation the statistic is given by:

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}} (1)    

Replacing the info given we got:

t=\frac{1.8-2}{\frac{0.5}{\sqrt{48}}}=-2.771    

The degrees of freedom are given by:

df=n-1=48-1=47  

And the p value would be:

p_v =P(t_{(47)}    

Since the p value is lower than the significance level we have enough evidence to conclude that the true mean for this case for the growth rate is less than 2cm per week

6 0
3 years ago
What is the area of the obtuse triangle below?
kolezko [41]

Answer:

198

Step-by-step explanation:

just multiply 22 by 8

8 0
2 years ago
4A.
antoniya [11.8K]

The number of paychecks Jalen will have to save until he can purchase the laptop is 6

<h3>How many paychecks will Jalen have to save until he can purchase the laptop? </h3>

<u>Define your variable</u>

To do this, we use the following variables

  • x represents the number of paychecks
  • y represents the cost of the laptop

<u>Set up an equation, and solve it.</u>

In (a), we have:

  • x represents the number of paychecks
  • y represents the cost of the laptop

Using the above variables, the equation is:

y = 200 + 50x

The cost of the laptop is $500.

So, we have:

200 + 50x = 500

Evaluate the like terms

50x = 300

Divide by 50

x = 6

Hence, the number of paychecks Jalen will have to save until he can purchase the laptop is 6

Read more about linear equations at:

brainly.com/question/14323743

#SPJ1

4 0
1 year ago
In the diagram find the area of DEF
Agata [3.3K]

Answer:

Im sorry Im not sure

Step-by-step explanation:

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2 years ago
Find the values of x and y using the figure below. Round your answer to the nearest integer.
11111nata11111 [884]

Answer:

x = 11

y = 17

Step-by-step explanation:

5y and (7y - 34) are vertical angles which means they're equal to each other:

5y = 7y - 34

5y - 7y = -34

-2y = -34

y = 17

(8x + 7) and (9x - 4) are also vertical angles:

8x + 7 = 9x - 4

8x - 9x = -4 - 7

-x = -11

x = 11

5 0
3 years ago
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