3 years ago

Please help me asap !!!!!!

Mathematics

1 answer:

dsp733 years ago

5 0

Answer:

Step-by-step explanation:

Pretty sure its D

You might be interested in

Explain 42+28 by making tens

djverab [1.8K]

Answer:70

Step-by-step explanation:

———

5 0

2 years ago

Help please! i don't know what to do

Serhud [2]

I hope this helps you

9/9+18=x/x+10

9/27=x/x+10

1/3=x/x+10

3x=x+10

x=5

8 0

3 years ago

A student wants to estimate the mean score of all college students for a particular exam. First use the range rule of thumb to m

Wewaii [24]

Answer:

See explanation below

<u>Step-by-step explanation:</u>

range = 2200 - 300 = 1900

To find standard deviation, we have:

standard deviation = range/4 = $\frac{1900}{4}$ = 475

The range rule of thumb estimate for the standard deviation is 475

Given:

Standard deviation, $\sigma$ = 475

Margin of Error, ME = 100

$\alpha$ = 1 - 0.90 = 0.10

Za/2 = Z0.05 = 1.64

Find sample size, n:

n ≥ $[Z_\alpha_/_2 * (\frac{\sigma}{ME})]^2$

n ≥ $[1.64 * (\frac{475}{100})]^2$

n ≥ 60.68

≈ 61

Minimun sample size,n = 61

5 0

3 years ago

Find all solutions to the equation with 0≤α≤2π. Give an exact answer if possible, otherwise give value(s) of α accurate to at le

Nady [450]

Please, find the solution atached in JPG format

6 0

3 years ago

I really need someone to help me out

elixir [45]

All it takes for a relation to be a function is for each possible first number of a pair there's only one possible second number.

So if any of the sets has two pairs with the same first number, that one's not a function.

The last one has (3,2) and (3,5) so isn't a function.

3 0

3 years ago