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3 years ago

S.O.S I desperately need math help

Mathematics

2 answers:

rjkz [21]3 years ago

7 0

I'm pretty sure that your answer is the Distributive Property, if I were you, I'd check your notes if you have notes or anything, and THEN, search it up. Just to make sure. I'm not always a hundred percent sure of my answer, but, I *THINK* it's the distributive property.

kodGreya [7K]3 years ago

7 0

It's distributive property because you are multiplying -8 to all numbers inside the parenthesis

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Prove that at a party where some people shake hands, the number of people who shake hands with an odd number of people is an eve

Kobotan [32]

If there are n people, each person could shake hands with 0 people, 1 person, 2 people,... on up to shaking hands with n − 1
people. Count how many different answers there are to asking the person the question "How many hands did you shake?" How many people are there? If the people are the pigeons, and the possible answers to the question "how many hands did you shake" are the holes, can we conclude anything yet? No? How about now noticing that at least one of the holes "I shook hands with noone" or "I shook hands with everyone" has to be empty... now what?

"Since there are more pigeons than holes there must be a hole with at least two pigeons in the same hole" Now, replace the word "pigeons" and "holes" with the appropriate terms for the context of your specific question, remember we are talking about people and number of handshakes they participated in.

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3 years ago

Which equation represents the circle described? (in picture)

Sedaia [141]

You are right. In circle equation we have =r² so the correct answer will be C od D. But we have to calculate the center of a circle.

$x^2+y^2-8x-6y+24=0\quad|-24\\\\(x^2-8x)+(y^2-6y)=-24$

Complete the square:

$x^2-8x+a^2\implies a=\dfrac{8x}{2x}=4\implies x^2-8x+4^2\\\\\\y^2-6y+b^2\implies b=\dfrac{6y}{2y}=3\implies y^2-6y+3^2$

And we have:

$(x^2-8x)+(y^2-6y)=-24\\\\(x^2-8x+4^2)-4^2+(y^2-6y+3^2)-3^2=-24\\\\
(x-4)^2+(y-3)^2-16-9=-24\\\\(x-4)^2+(y-3)^2-25=-24\quad|+25\\\\\boxed{(x-4)^2+(y-3)^2=1}$

So the answer is C (the same left side of equation).

6 0

3 years ago

Please help me with this answer

JulsSmile [24]

9514 1404 393

Answer:

x = 12
∠H = 94°

Step-by-step explanation:

The marked angles are supplementary, so ...

(5x +26)° +(8x -2)° = 180°

13x = 156 . . . . . . . . . . . . . . divide by °, subtract 24

x = 12 . . . . . . . . . . . divide by 13

∠H = (8x -2)° = (8·12 -2)°

∠H = 94°

4 0

2 years ago

What is the value of -9 + (-4 + 7) (2)?

RUDIKE [14]

Answer:

try -3

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

3c-7c+5d pls help me

IrinaK [193]

Answer:

-4c + 5d

Step-by-step explanation:

3 - 7 = -4, so c is equal to -4.

Since there is only one value for d, d stays the same as 5d.

3 0

2 years ago