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Leto [7]
2 years ago
15

Help this is due today

Mathematics
1 answer:
Gelneren [198K]2 years ago
8 0

Answer:

2 1/2 I think

Step-by-step explanation:

you find the L.C.M for all the fractions and multiply it. You should end up with whole numbers.

It should look like this

2n+3n=2

n= <u>2n+3n</u><u> </u> = <u>5</u>

2 2

n= 2 1/2

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Determine the given point is a solution to the equation. Show all work.<br> 1) 3x-7y=4; (1,-1)
marusya05 [52]

Answer:

  NOT a solution

Step-by-step explanation:

Substitute the values of x and y and see if the equation is satisfied:

  3(1) -7(-1) = 3 +7 = 10 ≠ 4 . . . . . . the given point is not on the line

(1, -1) is not a solution to the equation.

_____

(-1, 1) is a solution

6 0
3 years ago
Identify the conclusion in a hypothesis test of the following claim and sample data:
Anarel [89]

Answer:

C

Step-by-step explanation:

Firstly, we set up the null and alternative hypothesis as follows;

The null hypothesis is;

H0: μ ≥ 12

The alternative hypothesis is;

Ha : μ < 12

Next step is to calculate the test statistic z

Mathematically;

z = (x - μ )/ σ /√n

= (11.58 - 12) /1.93/√(80

Test statistic z = -1.92

Now we proceed to find the probability value that is equal to the value of the test statistic. We can find this by using the standard normal table or NORMSTD function on excel

P(z < -1.92) = 0.0274

P-value = 0.0274

alpha = 0.05

From the above, we can see that

P-value < alpha

And because of this, we are going to reject the null hypothesis and therefore accept the alternative.

We then conclude that there is sufficient evidence to conclude that "The average battery life (between charges) of this model of tablet is at least 12 hours."

7 0
3 years ago
which is a statistical question? A. how old is harvey? B. what did oliver eat for dinner last night ? C. how many hours a day do
andreyandreev [35.5K]

Answer:

i think it is c because its a complete question and sentence if im wrong tell me ( ;

brainlyest would be nice btw ( ;

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
2. y = 5x2 + 10x – 3
Mice21 [21]

Answer:

x= -7/10 or x= -0.7 , y= 7

Step-by-step explanation:

Find the x-intercept:                  Find the y-intercept:

y= 5×2+10x-3                                y= 5×2+10x-3  

0=10+10x-3                                    y= 5×2+10×0-3

0=7+10x                                         y= 7

-10x=7

x=-7/10

8 0
3 years ago
Find the LCM:<br>h. 3x^2(x+1) (x-1) and 6x(x-1)^2 (x+2)<br>​
Svet_ta [14]

Answer:

the LCM is 6x^2(x-1)^2(x+2)

5 0
2 years ago
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