MATHEMATICS MIDDLE SCHOOL

Which number line represents the solution of 4 - 3x > 13?

Answers

Answer 1
Answer:

Answer:

x<-3

Step-by-step explanation:

  • given, 4 - 3x > 13

adding 3x on both sides,

4>13+3x

subtracting 13 from both sides,

4-13>3x

-9>3x

dividing both the sides by 3,

-3>x

therefore solution: x<-3

  • the required graph is shown in the attachment
  • so any x value lesser than -3 satisfies the inequality. [ y can be any value]
  • since you have asked about which number line, take y=0 and then it will be x-axis with values lesser than -3. this is the required number line.

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when Sally picks any number between 1 and 20, doubles it, adds 6, divides by 2 and subtracts 3, she always gets the number she started with. why?

Answers

lets say number is x

doubles it (2x)
adds 6 (2x+6)
divide it by 2 (2x+6=2(x+3) so 2(x+3) divided by 2=x+3)
subtract 3 (x+3-3=x)

becasue math is fun, brah
I think it might be because 2 and 3 are factors of 6. 

20/25 + 25/10X ..........WHAT'S THE ANSWER

Answers

3 3/10 if you just add normally.

sally deposited $4,000 in a certificate of deposit that paid 2.75% interest compounded annually. what was her balance after one year

Answers

Answer:

$4,110

Step-by-step explanation:

In compound interest, Future Value formula is;

FV = PV (1+r)^n

PV= amount deposited in present value terms = $4,000

r = interest rate = 2.75% or 0.0275 as a decimal

n= total duration of investment = 1

FV = 4000*(1+0.0275)^1

FV = 4000*(1.0275)^1

FV = 4000 *1.0275

FV = $4,110

Therefore, her balance will be $4,110

What is the value of x?

Answers

8  times square root of 2 = 11.31. 11.31 / 2 = 5.655. 5.655 divided by 1.414 = 4, so x = 4
That sounds about right. I don’t know for sure though. I’m not good at math

Need #47 and #48 asap!!
20 pts!!

Answers

Answer:

47-Step-by-step explanation:

X=121 because they are vertical angles

48- first divide 96 by 6 together the surface area of each side which is equal 16 then to find the length and the width find the square root of 16 which is 4 because it is a cube the length/width/height are all equal to four. So do 4 x 4 x 4 to find the volume of one cube. Which is equal to 64 then multiple by 8 to get the total volume 512cm^3

Jenna has a bag that contains 7 red marbles and 25 blue marbles. She selects a marble at random, and then, without replacing the first one, selects another marble at random.What is the probability that Jenna selects a blue marble and then a red marble? Round your answer to the nearest percent.

P(blue and red) ≈ %

Answers

Jenna has a bag that contains 7 red marbles and 25 blue marbles.
She selects a marble at random, and then, without replacing the first one, selects another marble at random.
Let's find out the probability that Jenna selects a blue marble and then a red marble?
=> blue marble probability = 1/32 
=> red marble = 1/31
Round to the nearest percentage = 3%
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