All categories

3 years ago

(-2/3) -15.6 + (1/4 x -15.6)

Mathematics

2 answers:

borishaifa [10]3 years ago

6 0

Answer:

Step-by-step explanation:

$\frac{-2}{3}-15.6+\frac{1}{4}x-15.6 = \frac{-2}{3}- 15.6 - 15.6 + \frac{1}{4}x\\\\ = \frac{-2}{3} - 31.2+\frac{1}{4}x\\\\= \frac{-2}{3}-\frac{31.2*3}{1*3}+\frac{1}{4}x\\\\= \frac{-2}{3}-\frac{93.6}{3}+\frac{1}{4}x\\\\= \frac{-95.6}{3}+\frac{1}{4}x$

Ksivusya [100]3 years ago

4 0

Answer:

Video result for (-2/3) -15.6 + (1/4 x -15.6) negative two thirds times negative fifteen and six tenths plus one fourth times negative fifteen and six tenths. please help me.4:33

Multiplying positive and negative fractions (video)

Khan Academy · Khan Academy

Video result for (-2/3) -15.6 + (1/4 x -15.6) negative two thirds times negative fifteen and six tenths plus one fourth times negative fifteen and six tenths. please help me.4:11

Dividing negative fractions (video)

Khan Academy · Khan Academy

Video result for (-2/3) -15.6 + (1/4 x -15.6) negative two thirds times negative fifteen and six tenths plus one fourth times negative fifteen and six tenths. please help me.5:01

Subtracting fractions with unlike denominators (video)

Khan Academy · Khan Academy

Video result for (-2/3) -15.6 + (1/4 x -15.6) negative two thirds times negative fifteen and six tenths plus one fourth times negative fifteen and six tenths. please help me.6:22

Adding fractions with different signs (video)

Khan Academy · Khan Academy

Feedback

Step-by-step explanation:

You might be interested in

] It is claimed that 42% of US college graduates had a mentor in college. For a sample of college graduates in Colorado, it was

Bad White [126]

Answer:

$z=\frac{0.480 -0.42}{\sqrt{\frac{0.42(1-0.42)}{1045}}}=3.930$

The p value for this case would be given by:

$p_v =P(z>3.930)=0.0000443$

For this case the p value is lower than the significance level so then we have enough evidence to reject the null hypothesis so then we can conclude that the true proportion is significantly higher than 0.42

Step-by-step explanation:

Information given

n=1045 represent the random sample selected

X=502 represent the college graduates with a mentor

$\hat p=\frac{502}{1045}=0.480$ estimated proportion of college graduates with a mentor

$p_o=0.42$ is the value that we want to test

z would represent the statistic

$p_v$ represent the p value

Hypothesis to test

We want to test if the true proportion is higher than 0.42, the system of hypothesis are.:

Null hypothesis: $p \leq 0.42$

Alternative hypothesis: $p > 0.42$

The statistic is given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

Replacing the info we got:

$z=\frac{0.480 -0.42}{\sqrt{\frac{0.42(1-0.42)}{1045}}}=3.930$

The p value for this case would be given by:

$p_v =P(z>3.930)=0.0000443$

7 0

3 years ago

Is y=4x+3 and 4x+y=3 parallel or perpendicular or neither?

Sedbober [7]

Neither of the equations are parallel or perpendicular

3 0

3 years ago

Which are solutions of the equation x2 - 16 = 0? Check all that apply.

Setler [38]

Answer:

x=-4

x=4

Step-by-step explanation:

We can factor x^2 -16 = 0 by recognizing that it is a difference of squares. That means we can factor the equation to (x-4)(x+4) = 0. By using the Zero Product Property we know that either (x-4) or (x+4) is equal to 0. That means that x either equals -4 or 4.

8 0

3 years ago

Read 2 more answers

What is the multiplicative inverse of 2 1/2?<br><br> A) 2/3<br> B) 2/5<br> C)2

zheka24 [161]

If you get rid of the whole number in that fraction, you will have 3/2.
So the opposite of that would be 2/3.
I believe the answer is 2/3.

5 0

3 years ago

Read 2 more answers

In the diagram, figure I is a square, and figures II and III are equilateral triangles. What is the value of x?

baherus [9]

Answer: