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1 year ago

9

How many ways can you select a committee of 4 students out of 10 students?

1 answer:

Aleks04 [339]1 year ago

3 0

$\binom{10}{4}=\frac{10!}{6!4!}=\frac{10(9)(8)(7)}{24}=10(3)(7)=\boxed{210}$

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What is 2/5 times -10

maxonik [38]

Answer:

-4

Step-by-step explanation:

2/5 times -10 = -4

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3 years ago

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How to find the slope

nirvana33 [79]

Answer:

m= $\frac{y_2-y_1}{x_2-x_1}$

Step-by-step explanation:

use this formula if you're having two points or a graph

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2 years ago

Let Q(x, y) be the predicate "If x < y then x2 < y2," with domain for both x and y being R, the set of all real numbers.

Levart [38]

Answer:

a) Q(-2,1) is false

b) Q(-5,2) is false

c)Q(3,8) is true

d)Q(9,10) is true

Step-by-step explanation:

Given data is $Q(x,y)$ is predicate that $x$ then $x^{2}$ . where $x,y$ are rational numbers.

a)

when $x=-2, y=1$

Here $-2$ that is $x$ satisfied. Then

$(-2)^{2}$

$4$ this is wrong. since $4>1$

That is $x^{2}$ $>y^{2}$ Thus $Q(x,y)$ $=Q(-2,1)$ is false.

b)

Assume $Q(x,y)=Q(-5,2)$ .

That is $x=-5, y=2$

Here $-5$ that is $x$ this condition is satisfied.

Then

$(-5)^{2}$

$25$ this is not true. since $25>4$ .

This is similar to the truth value of part (a).

Since in both $x$ satisfied and $x^{2} >y^{2}$ for both the points.

c)

if $Q(x,y)=Q(3,8)$ that is $x=3$ and $y=8$

Here $3$ this satisfies the condition $x$ .

Then $3^{2}$

$9$ This also satisfies the condition $x^{2}$ .

Hence $Q(3,8)$ exists and it is true.

d)

Assume $Q(x,y)=Q(9,10)$

Here $9$ satisfies the condition $x$

Then $9^{2}$

$81$ satisfies the condition $x^{2}$ .

Thus, $Q(9,10)$ point exists and it is true. This satisfies the same values as in part (c)

6 0

3 years ago

Convert -3(4+7) to word statements

Alex787 [66]

Answer:

-14

Step-by-step explanation:

4+7=11 so therefore -3-11=-14

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3 years ago

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Points q, r, s, t, are plotted on the number line below<br><br><br><br>

vodomira [7]

Answer:

Step-by-step explanation:

must be r and s

because right at in middle of the distance between them is 0

4 0

3 years ago