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2 years ago

Your friend says "Multiplying a number by 5 is a 500% increase" Describe and correct the error in your friend's reasoning.

1 answer:

7 0

An increase is adding, not multiplying. they meant that 5 times a number is 500% of something. it would be a 400% increase as one plus four is five.

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How many positive 2 digit numbers are not divisible by 6

lana [24]

Answer:

10, 14, 16, 20, 22, 26, 28, 32, 34, 38, 40, 44, 46, 50, 52, 56, 58, 62, 64, 68, 70, 74, 76, 80, 82, 84, 86, 90, 92, 96, 98

Step-by-step explanation:

Basically you find 6, your least common denominator. Plug that into the next highest value, (starting at 10 would be 12), and those are the numbers you won't be able to use. If you want a faster way of doing this, take every even number 10-99 and put it in a calculator, divide by 6. If it is a decimal then those will be in your awnser, if its a whole number, that will not be your awnser. Hope this isn't too confusing and good luck!

4 0

3 years ago

Sandra needs to obtain a random sample of 20 students from her school, in order to do a project for her statistics class. Which

ser-zykov [4K]

Answer: D) At the next school assembly, choose one student from each of 20 randomly selected rows.

Step-by-step explanation:

A wouldnt be correct because it is all students from the spots program

B isnt correct because it is 10 girls and 10 boys from the girls' and boys' soccer teams

C wouldnt be correct because it would be the first 20 students she sees once she leaves statistics class

D is the only unbiased, completely random selection choice.

3 0

3 years ago

Read 2 more answers

The equation below describes a proportional relationship between x and y. What is the constant of

vovangra [49]

The constant of proportionality is 7

6 0

2 years ago

I need urgent help with this. please write out the working and the answer thank you

Lelechka [254]

1.   C = ⁵/₉F - 32
9C = 9(⁵/₉F - 32)
  9C = 9(⁵/₉F) - 9(32)
  9C = 5F - 288
- 5F - 5F
  9C - 5F = -288
- 9C   - 9C
-5F = -9C - 288
-5 -5
F = 1⁴/₅C + 57.6

2. $H = w + \frac{50}{m^{2}}$
   $m^{2}(H) = m^{2}(\frac{50}{m^{2}})$
   $Hm^{2} = 50$
   $\frac{Hm^{2}}{H} = \frac{50}{H}$
   $m^{2} = \frac{50}{H}$
   $\sqrt{m^{2}} = \sqrt{\frac{50}{H}}$
   $m = \frac{\sqrt{50}}{\sqrt{H}}$
   $m = \frac{5\sqrt{2}}{\sqrt{H}}$
   $m = \frac{5\sqrt{2}}{\sqrt{H}} * \frac{\sqrt{H}}{\sqrt{H}}$
   $m = \frac{5\sqrt{2H}}{H}$

3. A = 5 + 4√x
- 5 - 5
  A - 5 = 4√x
  (A - 5)² = (4√x)²
  A² - 10A + 25 = 16x
16 16
¹/₆A² - ⁵/₈A + 1⁹/₁₆ = x

4. $A = \frac{b + c}{b}$
   $Ab = b(\frac{b + c}{b})$
   $Ab = b + c$
   $Ab - b = c$
   $b(A) - b(1) = c$
   $b(A - 1) = c$
   $\frac{b(A - 1)}{A - 1} = \frac{c}{A - 1}$
   $b = \frac{c}{A - 1}$

3 0

2 years ago

PLEASE HELP QUICK 20 PTS!!!<br><br> Which relation is a function?

FinnZ [79.3K]

Answer:

Step-by-step explanation:

A function must pass the vertical line test, which means that two coordinates cannot have the same x coordinate. (They can't be directly above each other.)

7 0

3 years ago