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3 years ago

83 and one third percent as a fraction

1 answer:

6 0

83 1/3% = (83 1/3)/100
 = ((3*83 + 1)/3)/100
 = (250/3)/100 
 = 250/300 
 = (5*50)/(6*50) = (5/6)*(50/50)
83 1/3% = 5/6

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Given the equation y - 4 = (x + 8) in point-slope form, identify the equation of the same line in standard form.

yawa3891 [41]

Standard form
solve for y
y-4=x+8
add 4 to both sides
y=x+12

4 0

4 years ago

Brainliest + 20 pts to whoever helps pls!!

Blizzard [7]

Answer:

Correct option is (a). 60.391 and 101.879; because the test statistic is in a critical region, the test rejects the null hypothesis.

Step-by-step explanation:

A Chi-square test for population variance is used to perform this test.

The standard deviation is, 2.0 minutes.

Then the variance is, 4.0 minutes.

The hypothesis for this test is:

H₀: The population variance of all commute times is equal to 4.0 minutes, i.e. σ² = 4.

Hₐ: The population variance of all commute times is not equal to 4.0 minutes, i.e. σ² ≠ 4.

The test statistic is:

$\chi^{2}_{calc.}=\frac{(n-1)s^{2}}{\sigma^{2}}$

The critical region of this test is defined as:

Reject H₀ if $\chi^{2}_{calc.}$ or $\chi^{2}_{calc.}>\chi^{2}_{(1-\alpha /2), (n-1)}$ .

The degrees of freedom is:

$n-1=81-1=80$

Compute the critical from a Chi-square table.

$\chi^{2}_{\alpha /2, (n-1)}=\chi^{2}_{0.05, 80}=101.879\\\chi^{2}_{(1-\alpha /2), (n-1)}=\chi^{2}_{0.95, 80}=60.391\\$

The test statistic value is, $\chi^{2}_{calc.}=105.8$ .

$\chi^{2}_{calc.}=105.8 > \chi^{2}_{0.05, 80}=101.879$

The null hypothesis is rejected because the test statistic is in the critical region.

Thus, the correct option is (a).

6 0

3 years ago

What is the substitution to 3x y=-16 5x y=-20?

erica [24]

The first one ,to substitute 3xy from -16 ...so divided both side by 3 .so, (xy =-5.33). the second one,5xy =-20. so,divided both sides by 5 so xy = -4....

5 0

3 years ago

Solve the equation. 5x + 6 = 2(2x – 3) what dose x =

Lady_Fox [76]

Answer:

x=−12

Step-by-step explanation:

Let's solve your equation step-by-step.

5x+6=2(2x−3)

Step 1: Simplify both sides of the equation.

5x+6=2(2x−3)

5x+6=(2)(2x)+(2)(−3)(Distribute)

5x+6=4x+−6

5x+6=4x−6

Step 2: Subtract 4x from both sides.

5x+6−4x=4x−6−4x

x+6=−6

Step 3: Subtract 6 from both sides.

x+6−6=−6−6

4 0

3 years ago

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Again lol please help (:

Morgarella [4.7K]

Answer:

Stuck Watch a video or use a hint

Step-by-step explanation:

7 0

3 years ago

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