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1 year ago

Plc help! Factor completely 2a^3b-ab^3-1 2/3ab^3-a^3b-4 1/2a^2b-1/2a^2b

Mathematics

1 answer:

alexandr402 [8]1 year ago

7 0

Answer:

116−−√

110−−√

14√

18√

Step-by-step explanation:

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Ben drove 230 kilometers in 3 hours, and Pia drove 250

Drupady [299]

9514 1404 393

Answer:

Pia drove faster

Step-by-step explanation:

Speed is the ratio of distance to time. If the time is the same, the greater distance is associated with the greater speed.

Pia drove farther in 3 hours, so drove faster.

3 0

2 years ago

Which of the following points is a solution of the inequality y < -|x|?

ch4aika [34]

Answer:

(1, -2)

Step-by-step explanation:

1 < -|-2|

1 < |2|

because its absolute x can be -2 or +2. Both are greater than 1 so absolute 2 gets eaten.

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2 years ago

What will be the area of the given shape? (please help)

Leni [432]

Answer:

620

Step-by-step explanation:

To find the area of strangely-shaped structures, like this one, it is easiest if we cut the shape into smaller, more recognizable, shapes..

We can first cut off the top/center rectangle of this shape , which has a width of 10, and a length of 12. The "area" is length × width.

So, we multiply 12 × 10 to find the area of this section.

12 × 10 = 120

if we look at the bottom half, we can see that there is an identical rectangle (because it has the same width of 10 and length of 12) ! So, we can simply add 120 to our total twice to count both of these areas.

(when putting areas of multiple portions together, we add--not multiply)

120 (first/top rectangle)

+ 120 (lower rectangle)

_______________

240

So, our area so far is 240.

Now, we need to find the horizontal (left-right) section of this shape.

We can see that it has a width of 10 (look at the right end), and a length of 38 14 + 10 + 14 (38 total)

So, to find the area of this portion, we will multiply its length × width, which we know is: 38 × 10

38 × 10 = 380.

So, we can now add our areas together:

240

+ 380

__________

620

So, our area of this shape is 620

6 0

1 year ago

Read 2 more answers

Tell whether the sentence below is true or false:

omeli [17]

Answer:

true

Step-by-step explanation:

geometry

3 0

2 years ago

A random sample of adults in the US were asked whether they consider a car a necessity or a luxury,1 and we find that a confiden

Ainat [17]

Answer:

There is 95% confidence that the true proportion of people who say that a car is a necessity lies in the interval (0.83, 0.89).

Step-by-step explanation:

A (1 - α)% confidence interval for population proportion is given by:

$CI=\hat p\pm z_{\alpha/2}\times \sqrt{\frac{\hat p(1-\hat p)}{n}$

The sample size is, n = 1483.

The 95% confidence interval for the population proportion of people who say that a car is a necessity is,

CI = (0.83, 0.89)

A (1 - α)% confidence interval for a population parameter implies that there is (1 - α) probability that the true parameter value is contained in the interval.

Or, there is (1 - α)% confidence that the confidence interval consists of the true population parameter value.

The 95% confidence interval for the population proportion of people who say that a car is a necessity implies that the true proportion of people who say that a car is a necessity lies in the interval (0.83, 0.89) with a probability of 0.95.

Or, there is 95% confidence that the true proportion of people who say that a car is a necessity lies in the interval (0.83, 0.89).

3 0

2 years ago