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3 years ago

Can u please help me out

Mathematics

1 answer:

LekaFEV [45]3 years ago

3 0

Answer:6

Step-by-step explanation:

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Pag si X! si X na don't alam alam Y its your X breaks on you<br> What does this mean

Elena-2011 [213]

Answer:

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Step-by-step explanation:

8 0

2 years ago

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Solve the system of equations using the elimination method. <br><br> 4x+3y=16<br> x=-3y+13

Ipatiy [6.2K]

Step by Step Solution
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System of Linear Equations entered :

[1] -4x - 3y = -7
[2] 16x - 3y = 13
Graphic Representation of the Equations :

-3y - 4x = -7 -3y + 16x = 13

Solve by Substitution :

// Solve equation [2] for the variable x

[2] 16x = 3y + 13

[2] x = 3y/16 + 13/16
// Plug this in for variable x in equation [1]

[1] -4•(3y/16+13/16) - 3y = -7
[1] - 15y/4 = -15/4
[1] - 15y = -15
// Solve equation [1] for the variable y

[1] 15y = 15

[1] y = 1
// By now we know this much :

x = 3y/16+13/16
y = 1
// Use the y value to solve for x

x = (3/16)(1)+13/16 = 1
Solution :
{x,y} = {1,1}

7 0

2 years ago

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According to the website www.collegedrinkingprevention.gov, "About 25 percent of college students report academic consequences o

astraxan [27]

Answer:

The required confidence interval is (3.068,4.732)

Step-by-step explanation:

Consider the provided information.

He plans to use a 90% confidence interval. He surveys a random sample of 50 students. The sample mean is 3.90 alcoholic drinks per week. The sample standard deviation is 3.51 drinks and wants to construct 90% confidence interval.

Thus, n=50, $\bar x$ =3.90 σ=3.51

Now find degree of freedom.

$df=n-1\\df=50-1=49$

The confidence level is 90% and df=49

Therefore,

$\frac{\alpha}{2} =\frac{1-0.90}{2}$

$\frac{\alpha}{2} =0.05$

Now by using t distribution table look at 49 df and alpha level on 0.05.

$t_{\frac{\alpha}{2}} = 1.67653$

Calculate SE as shown:

$SE=\frac{\sigma}{\sqrt{50} }$

$SE=\frac{3.51}{\sqrt{50}}=0.4964$

Now multiply 1.67653 with 0.4964

Therefore, the marginal error is: 1.67653 × 0.4964≈ 0.832

Now add and subtract this value in given mean to find the confidence interval.

$\bar x-E$

Hence, the required confidence interval is (3.068,4.732)

4 0

3 years ago

The force of an object (f) is equal to its mass (m) times its acceleration (a). Thus, the formula for calculating force is f = m

natima [27]

Hello There! Sorry for the late answer, but better late than never as they say! The correct answer to your query is B: A= F divided by m. Please tell me if this helps any or not.

6 0

2 years ago

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Identifyin g a Data Set with an Outlier

Alchen [17]

I don’t really see an outlier but if i have to choose one i would do the 678

7 0

3 years ago

Can u please help me out​

Can u please help me out