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3 years ago

Plzzzzzzzzzzzzzzzzzzzz

Mathematics

2 answers:

-BARSIC- [3]3 years ago

5 0

Step-by-step explanation:

1. 6s⁹ t³

2. y³ + 3y² + 3y + 1

hope it helps!

bazaltina [42]3 years ago

4 0

The answer should be only
1) 6s9t3
2) y3+3y2+3y+1

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How many 5 digit numbers have the property that all their digits are ascending.

sertanlavr [38]

Answer:

So, for the ascending order, there are only 9 digits to choose from, and hence, there are 9C5 ways to choose the 5 digits. So, there can be 9C5=126 5-digit no.s with their digits in an ascending order.

126 5

6 0

3 years ago

A group of students at a high school took a standardized test. The number of students who passed or failed the exam is broken do

Anuta_ua [19.1K]

Answer:

Since P(male)xP(fail) = 0.0549 and and P(male and fail) = 0.0773, the two results are different, so the events are not independent.

Step-by-step explanation:

Independent events:

Two events, A and B are independent, if:

$P(A \cap B) = P(A)P(B)$

Probability of male:

58 + 14 = 72 males out of 58 + 14 + 98 + 11 = 181

P(male) = 72/181 = 0.3978

Probability of failling:

14 + 11 = 25 students fail out of 181. So

P(fail) = 28/181 = 0.1381

Multiplitication of male and failling:

0.3978*0.1381 = 0.0549

Probability of being male and failing:

14 out of 181. So

14/181 = 0.0773

Different probabilities, so not independent.

Since P(male)xP(fail) = 0.0549 and and P(male and fail) = 0.0773, the two results are different, so the events are not independent.

5 0

3 years ago

How do you rationalize the numerator in this problem?

maw [93]

To solve this problem, you have to know these two special factorizations:

$x^3-y^3=(x-y)(x^2+xy+y^2)\\ x^3+y^3=(x+y)(x^2-xy+y^2)$

Knowing these tells us that if we want to rationalize the numerator. we want to use the top equation to our advantage. Let:

$\sqrt[3]{x+h}=x\\ \sqrt[3]{x}=y$

That tells us that we have:

$\frac{x-y}{h}$

So, since we have one part of the special factorization, we need to multiply the top and the bottom by the other part, so:

$\frac{x-y}{h}*\frac{x^2+xy+y^2}{x^2+xy+y^2}=\frac{x^3-y^3}{h*(x^2+xy+y^2)}$

So, we have:

$\frac{x+h-h}{h(\sqrt[3]{(x+h)^2}+\sqrt[3]{(x+h)(x)}+\sqrt[3]{x^2})}=\\ \frac{x}{\sqrt[3]{(x+h)^2}+\sqrt[3]{(x+h)(x)}+\sqrt[3]{x^2}}$

That is our rational expression with a rationalized numerator.

Also, you could just mutiply by:

$\frac{1}{\sqrt[3]{x_h}-\sqrt[3]{x}} \text{ to get}\\ \frac{1}{h\sqrt[3]{x+h}-h\sqrt[3]{h}}$

Either way, our expression is rationalized.

7 0

3 years ago

What is 452 to the nearest thousand

son4ous [18]

The next larger even thousand is 1,000 .

The next smaller even thousand is zero thousands.

452 is nearer to <em>zero</em> thousand than it is to 1,000 .

5 0

3 years ago

Read 2 more answers

Can someone help me out? i’m not sure what the answers would be for these 5, thanks.

melamori03 [73]

Answer:

<6 and 4 are supplementary angles. Supplementary angles add up to 180. therefore <6 and <4=180--->m<6=65---->180-65=115---> m<4-115

2. 115°

By using vertical angles theorem we see that angles opposite to each other like 5 and 8 are congruent.

Therefore m<8 = m<5

3. 122

<3 and <6 are congruent by the alternate interior angles theorem which states that interior angles that are opposite one another such as 6 and 3 are congruent.

4. 73°

<4 and <7 are supplementary since the <4 is equal to the <8 and the <8 is supplementary to 7.

180-107=73

5. 73°

Step-by-step explanation:

4 0

3 years ago