1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alina [70]
2 years ago
9

R 3. The mean of 4 numbers is 8. Three of the numbers add up to 22. What is the last number?​

Mathematics
1 answer:
statuscvo [17]2 years ago
7 0
<h2><em><u>Solution</u></em> : </h2>

let the last number be x

we know,

\boxed{mean =  \frac{sum \:  \: of \:  \: all \:  \: observations}{number \:  \: of \:  \: observations} }

So,

\hookrightarrow \: 8 =  \dfrac{22 + x}{4}

\hookrightarrow \: 8 \times 4 = 22 + x

\hookrightarrow \: 32 = 22 + x

\hookrightarrow \: x = 32 - 22

\hookrightarrow \: x = 10

therefore, the last number is 10.

You might be interested in
A calculator costs $d. A school buys 90 calculators, and gets a $100 discount for bulk purchasing. How much did the school spend
erik [133]

Answer:

90d-100

Step-by-step explanation:

4 0
3 years ago
Find the rule, and type the missing number in the sequence.<br><br> 96, 192, ____, 384
Wittaler [7]

Answer:

Missing number is 288, and the rule is +96

Step-by-step explanation:

First subtract 96 from 192, which is 96

then add that to 192 and the missing value is 288

you should also add 96 to 288 just to make sure it gets you to the last number which is 384.

5 0
2 years ago
Find the equation of the line in slope-intercept form.<br><br><br>Slope is −7 and through (−3, 16) 
timama [110]

1) Create was we already know in the equation. 16=-7(-3)+b. (This is using the initial equation of y=mx+b.)

2) Simplify and solve for b: 16=21+b = -5=b

3) Replug your be value into your equation: y=-7x-5.

Answer

y=-7x-5

Words: y equals negative seven x, minus five.

6 0
3 years ago
Read 2 more answers
What is the volume of the prism?
GREYUIT [131]

let's firstly conver the mixed fractions to improper fractions and then get their product.

\stackrel{mixed}{4\frac{1}{2}}\implies \cfrac{4\cdot 2+1}{2}\implies \stackrel{improper}{\cfrac{9}{2}} ~\hfill \stackrel{mixed}{2\frac{1}{2}}\implies \cfrac{2\cdot 2+1}{2}\implies \stackrel{improper}{\cfrac{5}{2}} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{9}{2}\cdot \cfrac{5}{2}\cdot 6\implies \cfrac{270}{2}\implies 135

hmmm I take it that one can write that mixed as 135\frac{0}{2}.

is valid, not that it makes any sense.

5 0
2 years ago
How do you simplify this expression? - 3+8n+n- 10
Zarrin [17]
You have 9n and -7 in total so the answer is 9n-7. You add up all the numbers and then add up the numbers with n attached to them
6 0
3 years ago
Other questions:
  • If you know that a relationship is proportional and are given one ordered pair other than (0,0), how can you find another pair?
    10·1 answer
  • Kaiden deposited $6200 into a savings account for which interest is compounded weekly at a rate of 2.77%.
    12·1 answer
  • 4m^2-3m^6+5m^44m
    8·2 answers
  • What is the square root of 1 over 49?
    12·2 answers
  • Explain the step(s) needed to solve 4+ p = 1 and then solve for p
    10·1 answer
  • Find the value of angle x ​<br><br><br><br>pls answer
    14·2 answers
  • What is a simpler form of (2x²-3x+1)(x-3)?
    7·2 answers
  • Subtract w from 8 in algebric expression will be​
    7·2 answers
  • Simplify 12 power of 16<br> 12 power of 4
    7·2 answers
  • 26. Given: AE 1 AB, AD bisects ZEAC,
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!