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2 years ago

I need help plish k squared minus 11

Mathematics

1 answer:

timama [110]2 years ago

8 0

Answer: It's an algebraic expression

Step-by-step explanation: k²- 11 is an algebraic expression.

If you found my answer helpful please choose my answer as Brainliest. I would appreciate it! Good luck everyone! :)

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If x+y=4a+7 and x-y=2a+5, solve for x in terms of a

oksian1 [2.3K]

Answer:

Step-by-step explanation:

x + y = 4a + 7

x - y = 2a + 5

In both equations, make x the subject of the formula

x = 4a + 7 - y equation 1

x = 2a + 5 + y equation 2

Subtract equation 2 from equation 1

2a + 2 -2y

= 2a + 2

3 0

3 years ago

(TCO 3) How many different teams can be organized consisting of two men, two women, and two children? We have the following grou

Nady [450]

Answer:

900 teams

Step-by-step explanation:

The order in which the people are selected is not important(John and Josh is the same team as Josh and John), which means that the combinations formula is used 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.

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

In this question:

Two men(from a set of 6).

Two women(from a set of 5).

Two children(from a set of 4).

How many different teams can be organized consisting of two men, two women, and two children?

$T = C_{6,2}*C_{5,2}*C_{4,2} = \frac{6!}{2!4!}*\frac{5!}{2!3!}*\frac{4!}{2!2!} = 15*10*6 = 900$

900 teams

4 0

3 years ago

10 points. [ATTACHED]

SVETLANKA909090 [29]

Answer:

$\overline{AD}\:=\:19.2$

Step-by-step explanation:

$2x+5=3x-2\quad \:\rightarrow \quad \:x=7\\\\\overline{BD}\:=\:3\left(7\right)-2\:=\:19\\\\Length\:of\:\overline{AD}\:=\sqrt{19^2+2.5^2}=19.2$

3 0

4 years ago

What are all the common factors for 24 64 88

jek_recluse [69]

The common factors are -
-1
-2
-4

8 0

4 years ago

Read 2 more answers

What is the factored form of the expression?<br><br> d^2 = 36d + 324

Aleonysh [2.5K]

Answer:

(x-43.45)(x+7.45)=0.

Step-by-step explanation:

We have the quadratic equation $d^{2}=36d+324$ i.e. $d^{2}-36d-324=0$

Now, the roots of the quadratic equation $ax^{2}+bx+c=0$ are given by $x=\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}$

So, from the given equation, we have,

a = 1, b =-36 , c = -324.

Substituting the values in $x=\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}$ , we get,

$x=\frac{36\pm \sqrt{(-36)^{2}-4\times 1\times (-324)}}{2\times 1}$

i.e. $x=\frac{36\pm \sqrt{1296+1296}}{2}$

i.e. $x=\frac{36\pm \sqrt{2592}}{2}$

i.e. $x=\frac{36\pm 50.9}{2}$

i.e. $x=\frac{36+50.9}{2}$ and i.e. $x=\frac{36-50.9}{2}$

i.e. $x=\frac{86.9}{2}$ and i.e. $x=\frac{-14.9}{2}$

i.e. x = 43.45 and x = -7.45

Hence, the factored form of the given expression will be (x-43.45)(x+7.45)=0.

4 0

3 years ago