1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
LuckyWell [14K]
2 years ago
7

One and sixty-five hundredths added to twelve and seven tenths

Mathematics
2 answers:
borishaifa [10]2 years ago
7 0

Answer:

14.35

Step-by-step explanation:

one and sixty-five hundredths added to twelve and seven tenths

i.e.,

<em><u>1.65 + 12.7</u></em> = <em><u>14.35</u></em>

kolbaska11 [484]2 years ago
5 0

Answer:

14.35

Step-by-step explanation:

1.65 + 12.7

You might be interested in
uppose that an automobile manufacturer advertises that its new hybrid car has a mean gas mileage of 50 miles per gallon. You tak
Harlamova29_29 [7]

Answer:

t=\frac{47-50}{\frac{5.5}{\sqrt{30}}}=-2.988    

p_v =2*P(t_{(29)}  

If we compare the p value and the significance level given \alpha=0.05 we see that p_v so we can conclude that we have enough evidence to fail reject the null hypothesis, so we can conclude that the true mean is significantly different from 50 mpg at 5% of signficance.  

Step-by-step explanation:

Data given and notation  

\bar X=47 represent the sample  mean  

s=5.5 represent the sample standard deviation

n=30 sample size  

\mu_o =50 represent the value that we want to test

\alpha=0.01 represent the significance level for the hypothesis test.  

t would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the true mean is 50 or no, the system of hypothesis would be:  

Null hypothesis:\mu = 50  

Alternative hypothesis:\mu \neq 50  

If we analyze the size for the sample is = 30 but we don't know the population deviation so is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:  

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

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

Calculate the statistic

We can replace in formula (1) the info given like this:  

t=\frac{47-50}{\frac{5.5}{\sqrt{30}}}=-2.988    

P-value

The first step is calculate the degrees of freedom, on this case:  

df=n-1=30-1=29  

Since is a two tailed test the p value would be:  

p_v =2*P(t_{(29)}  

Conclusion  

If we compare the p value and the significance level given \alpha=0.05 we see that p_v so we can conclude that we have enough evidence to fail reject the null hypothesis, so we can conclude that the true mean is significantly different from 50 mpg at 5% of signficance.  

4 0
2 years ago
2) The sum of 5x and 2x is at least 14
Semmy [17]

Answer:

b

Step-by-step explanation:

if it is less than 14 then the big side of the arrow would be facing the 14

6 0
3 years ago
Read 2 more answers
What is the distance between the points (2, 10) and (-6, 4) on the coordinate
Amanda [17]

Answer:

c

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
You sold 60 units of candy. The amount
nlexa [21]

Answer:

$3.50

Step-by-step explanation:

6 0
3 years ago
Can someone please help me with this question?? It’s really hard and once you understand it, can you please give me an explanati
Thepotemich [5.8K]

We want to subtract 8x + 3 from -2x+5. We can create an expression to represent this.

-2x + 5 - (8x + 3).


After this, lets distribute the - sign (think of this like expanding something with -1).

-2x + 5 - 8x - 3


Lastly, we just need to combine like terms.

-2x + 5 - 8x - 3


Combine the 5 and -3 to get 2.

-2x + 2 - 8x


Combine the -2x and -8x to get -10x.

-10x + 2


The final answer to the question is therefore A.

3 0
3 years ago
Other questions:
  • What’s the answer for x thanks
    7·1 answer
  • The profits in hundreds of dollars, P(c), that a company can make from a product is modeled by a function of the price, c, they
    14·1 answer
  • If Mr. arenth wants to put new carpeting in the room shown, how many square feet should he order L= 14ft. W = 6c-8ft. L= 5+3c ft
    10·2 answers
  • What’s 1+1?????????????????????
    14·2 answers
  • Ella swims four times a week at her club's pool. She swims the same number of laps on Monday, Wednesday, and Friday, and 15 laps
    10·1 answer
  • 6(y +3) =72. Y= ???? <br> What does y equal
    9·2 answers
  • QUICK PLS!
    11·1 answer
  • 165.8 - ( 5 ^3 + 5 ) +
    14·2 answers
  • .
    7·1 answer
  • The line x +ky=18 has a gradient of - 1/6 (a) Find the value of k.​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!