MATHEMATICS HIGH SCHOOL

PLZ PLZ HELP ASAP! I WILL MARK YOU BRAINLIEST!

Answers

Answer 1

Answer:

Answer:c,d,a,d

Step-by-step explanation:

Answer 2

Answer:

Answer:

I can't see it redo it so I can answer

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My mum was 27 when I was born. 8 years ago she was twice as old as I shall be in 5 years time. How old am I now?
Which of the following shows the correct factorization of x3 - 5x2 - 14x?A. x(x + 7)(x + 2)B. x(x - 7)(x - 2)C. x(x + 7)(x - 2)D. x(x - 7)(x + 2)
Is the algebraic expression 19s-19 in simplest form?

How many solutions will the following equation have: x squared -49=0

Answers

Xsquere-49=0
Xsquere=49
X=√49 (squere root of 49 is 7)
i.e X=7

If u use factoring then x can be 7 or -7

2. Justify each step of the proof.Conjecture: If 2(x2 + 5) = 60, then x is 5 or –5.

1. 2(x2 + 5) = 60                 1.

2. 2x2 + 10 = 60                  2.

3. 2x2 = 50                          3.

4. x2 = 25                            4.

5. x = ±5                              5.

Answers

Hello,

2(x²+5)=60
<==>x²+5=30 (divided teh 2 members by the positive 5 :keep the equality)
<==>x²-25=0 (substract 25 from 2 members)
<==>(x-5)(x+5)=0 (remarquable product a²-b²=(a+b)(a-b))
<==> x= 5 or x=-5 (a product if null if one at least of its factor is null)

You are given a bag with 10 balls, of which 3 are red, 3 are blue, 1 is yellow, 2 are black, and 1 is white. You pick one ball, note its color, put the ball back in the bag, and then pick another ball. The probability that it was the case that the first ball was black and the second ball was red is

Answers

Answer:

3/50

Step-by-step explanation:

P( 1st ball is a black ball) = number of black balls/ total balls

= 2/10 = 1/5

We put the ball back so we still have the same number of balls

P( 2nd ball is a red ball) = number of red balls/ total balls

= 3/10

P (1st ball black, 2nd red) = P( 1st ball is a black ball)* P( 2nd ball is a red ball)

=1/5* 3/10

= 3/50

Name 2 linear expressions whose difference is 5x-4

Answers

For this case we can write the following linear expressions:

We now subtract both linear expressions:

From here, we must subtract similar terms.

We have then:

Rewriting we have:

That is, we obtain the desired result.

Answer:

2 linear expressions whose difference is 5x-4 is:

You are a freshman in college and are planning a trip to Europe when you graduate from college at the end of four years. You plan to save the following amounts starting today: $625, $700, $700, and $750. If the account pays 5.75 percent annually, how much will you have at the end of four years?

Answers

Answer:

You will have $3439 available.

Step-by-step explanation:

You have in total 625+700+700+750 = $2750. Each year this amount is multiplied by 1.0575, hece at the end of four years, you will have

2750 * 1.0575⁴ = $3439, thus at the end of 4 years you will have $3439 available.

4 ^sqrt 400/ 4^ sqrt 5

Answers

4^ sqrt(400) / (4^ sqrt(5))
= 4^20/ 4^ sqrt(5)
= 4^ (20- sqrt(5)

The final answer is 4^ (20- sqrt(5)~