|-6|+|3| I really don't get it do I simply find the sum our is itsomething different plz explain

Answers

Answer 1

Answer: $|a|= \left\{\begin{array}{ccc}a&if\ a\geq0\n-a&if\ a < 0\end{array}\right\n\n|-3|=3\n|\ 0\ |=0\n|\ 6\ |=6\n|-100|=100\n\n\n|-6|+|\ 3\ |=6+3=9$

Answer 2

Answer: 9 because anything in the absolute value signs can't be negative, so it would be 6 + 3 = 9

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1. You can do 90 sit-ups in 2 minutes. Your friend can do 135 sit-ups in 3 minutes. Do these rates form a proportion? Explain2. The ratio of quarters to dimes in a coin collection is 5:3. You add the same number of new quarters as dimes to the collection.
a. Is the ratio of quarters to dimes still 5:3?
b. If so, illustrate with an example. If not, give a counter-example.
3. You are 13 years old, and your cousin is 19 years old. As you grow older, is your age proportional to your cousin's age? Explain your reasoning

Answers

Answer:

1. The relation is proportional.

2. The ratio of quarters and to dimes will not remain 5 : 3.

3. y = 6 + x, Hence, not proportional.

Step-by-step explanation:

1. I can do 90 sit-ups in 2 minutes and my friend can do 135 sit-ups in 3 minutes.

If we consider t as the time in minutes and n as the number of sit-ups, then we can write (2,90) and (3,135) as two ordered pairs.

So, the relation between t and n will be

$(n - 135)/(135 - 90) = (t - 3)/(3 - 2)$

⇒ n = 45t

Therefore, the relation is proportional.

2. The initial ratio of quarters to dimes was 5:3. If I add the same number of quarters and dimes to it then,

a) The ratio of quarters and dimes will not still be 5 : 3.

b) Let, the number of quarters was 5 then the number of dimes was 3. {As the ratio was 5 : 3}

Now, we add 3 new quarters and 3 new dimes in the collection. then, finally, the number of quarters will be (5 + 3) = 8 and the number of dimes will become (3 + 3) = 6.

Therefore, the new ratio will become 8 : 6 = 4 : 3 which is not equal to 5 : 3.

3. I am 13 years old, and my cousin is 19 years old.

So, if my age is given by x and that of my cousin is y, then

y - x = 19 - 13

⇒ y - x = 6

⇒ y = 6 + x

This relation will continue as the year passes. So, the relation is not proportional as the relation is not like y = kx. (Answer)

Solve 2x2 + 12x − 14 = 0 by completing the square, options: A. 2(x + 6)2 = 26; x = −6 + square root 13, x = −6 − square root 13 B. 2(x + 6)2 = 20; x = −6 + square root 20, x = −6 − square root 20 C. 2(x + 3)2 = 32; x = 1, x = −7 D. 2(x + 3)2 = 32; x = 13, x = 19

Answers

I just solved this one
anothe way is undistribute the 2 first and move -14 to side
2(x^2+6x)-14=0
comlete the squer inside and add negative
2(x^2+6x+9-9)-14=0
factor perfect square
2((x+3)^2-9)-14=0
distribute
2(x+3)^2-18-14=0
2(x+3)^2-32=0
add 32 both sides
2(x+3)^2=32
divide 2
(x+3)^2=16
sqrt both sides
x+3=+/-4
minus 3
x=-4-3 or 4-3
x=1 or -7

answer is C

Answer:

the answer is c: 2(x + 3)2 = 32; x = 1, x = −7

Step-by-step explanation:

I took the test

You have a jar of candy with 24 pieces of chocolate candies and 14 lollies. You take one piece of candy from the jar, put it back and then take another from the jar at random. What is the probability you will get 1 chocolate and 1 lollies?

Answers

so there is a 14/38 chance that you will get a lollie and a 24/38 chance you will get a chocolate.
all you have to do is multiply these together
14/38x24/38
=84/361

Iam trying to work my brain ! But it turns out, I need help

Answers

Function A :
When x = 1, y = 5
When x = 2, y = 7
Change = +2

Function B :
When x = 1, y = 1
When x = 2, y = 4
Change = +3

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Answer: Function B has a greater change.
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a duck mass at Birth was 0.05 kg that duck gained approximately 0.042 kilograms each week after how many weeks is the duck Mass 0.890 kilograms

Answers

Work the problem backwards so .89-.05 which equils .84 then divide by .042 which gives you 20, your answer.

Gloria says the two expressions 1/4(12x + 24) - 9x and -6(x + 1) are equivalent. Is she correct? Explain why or why not.

Answers

The first expression is equal to 3x + 24 - 9x, or 24 - 6x, and the second equation equals 6-6x. If you set them equal to eachother, you get 24 - 6x = 6 - 6x. The 6x's cancel out, so you're left with 24 = 6, which is not true. The expressions are not equivalent.

so first distribute
1/4(12x+24)=3x+8
so 3x+8-9x=8-6x

-6(x+1)=-6x-6
8-6x is not equal to -6-6x
so she is NOT correct, they are not equivilent

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