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2 years ago

What 4 fractions can you add to get 2

Mathematics

1 answer:

pochemuha2 years ago

5 0

Answer: 1/2, four times

Step-by-step explanation:

One split into two gets you two one-halfs. So two would be twice as many.

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A certain lot consisting of ten items has three defective items and seven nondefective items. How many possible subsets of 2 ite

Charra [1.4K]

Answer:

Step-by-step explanation:

The order in which the items are chosen is not important. So we use the combinations formula to solve this question.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

How many possible subsets of 2 items can be chosen from this lot?

Combinations of 2 from a set of 10. So

$C_{10,2} = \frac{10!}{2!(10-2)!} = 45$

4 0

2 years ago

What is root3(root3 - 1)

Alenkasestr [34]

Answer:

3 - root3 or 3 - √3

Step-by-step explanation:

root3(root3 - 1) =
√3(√3 - 1) =
√3(√3) - √3(1) =
√3² - √3 =
3 - √3
3 - root3

4 0

2 years ago

Read 2 more answers

What is a reasonable measure for the angle shown?

dimaraw [331]

I would say 120 since it’s not at the end near 170

4 0

2 years ago

Write 8.92x10^9 in standard notation.

Mandarinka [93]

8920000000.
Since the problem is asking for a positive 10^9 power, the final number with be greater than 8.92

7 0

2 years ago

The vertices of triangle rst are r(–1,–2), s(2,–1), and t(4,2). If δjkl ∼ δrst and the length of kl is units , what is the lengt

NemiM [27]

Answer:

3.16 units

Step-by-step explanation:

It has been given that the triangles JKL and the triangle RST are congruent.

That implies that, the length of the side JK, KL, and JL is equivalent to the length of the sides RS, ST, and RT respectively.

Now, to find the length of JK we need to find the length of the side RS. The coordinates of the points R and S are $(-1,-2)$ and $(2,-1)$ .

The length of the side RS is equal to the distance between point R and S.

RS $=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

$= \sqrt{(2-(-1))^2+(-1-(-(-2))^2}$

$=\sqrt{3^2+(-1+2)^2}$

$=\sqrt{9+1}=\sqrt{10}=3.16$

Now that we have the length of the side RS, and the triangles JKL and RST are congruent therefore, the length of the side JK is 3.16 units.

7 0

2 years ago

Read 2 more answers