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snow_lady [41]
4 years ago
5

three of four numbers have a sum of 22. if the average of the four numbers is 8, what is the fourth number?

Mathematics
2 answers:
Murrr4er [49]4 years ago
7 0
Let the unknown number be x.
as the average of the four numbers is 8
⇒ (22 + x)/4 = 8
⇒22 + x = 32
⇒x = 10

MakcuM [25]4 years ago
4 0
The 4th number is 10, since you need to add 10 to get 32 so that when you divide by 4 you get 8
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What is the value of x? Show your work each step of the way. No work means NO points!
Brrunno [24]

Answer:

The value of x is -10.

Step-by-step explanation:

Given : Expression 3x-8=\frac{8x+4}{2}

To find : What is the value of x?

Solution :

Step 1 - Write the expression,

3x-8=\frac{8x+4}{2}

Step 2 - Cross multiply,

6x-16=8x+4

Step 3 - Take like terms together,

6x-8x=4+16

Step 4 - Solve,

-2x=20

x=-\frac{20}{2}

x=-10

Therefore, The value of x is -10.

5 0
3 years ago
MULTIPUL ANSWER CHOICE GIVE ME MORE THAN 1 ANSWER AND MAKE IS CORRECT! PLEASE AND THANK YOU!
barxatty [35]

Answer: The opposite of the opposite of a number is the number itself. And the opposite of the opposite of a number is the number itself.

Step-by-step explanation:

6 0
3 years ago
Can anyone solve this?
lesantik [10]

Answer:

44,280

Step-by-step explanation:

I might know. I multiplied the 1st and got 307.5.

then multiplied the 2d. I got 144

multiplied 307.5x144 and I got 44,280

7 0
2 years ago
Read 2 more answers
B is the midpoint of AC. C is the midpoint of AD. Find the coordinates of B and D given the coordinates of A (-2,5) and the coor
GalinKa [24]

B= (3,6) and D= (18,9)

Step-by-step explanation:

To find the midpoint of two given points add X1 and X2 together, then divide by 2 to get the X value of the midpoint and do the same thing for the Y value. That will get you B. From there you can see to get from point A to point C you add 10 to the x value and add 2 to the y value. Because C is the midpoint just double what you had to add to get point D (add 20 to x and add 4 to y)

4 0
3 years ago
Simplify the following: a) [ -6 +22 – 6 + 8 ] ÷ ( -9 ) b) 400 ÷ { 40 – (-2) -3 – ( -1)} c) 40 x -23 + 40 x -17 d) 1673 x 99 – (-
oee [108]

Step-by-step explanation:

<h3> a) [ -6 +22 – 6 + 8 ] ÷ ( -9 )</h3>

[ -6 +22 – 6 + 8 ] = 18

18 ÷ (-9) = -2

<h3> b) 400 ÷ { 40 – (-2) -3 – ( -1)} </h3>

{40 – (-2) -3 – ( -1)} = { 40 + 2 -3 + 1} = 40

400 ÷ 40 = 10

<h3>c) 40 x -23 + 40 x -17 </h3>

(40 x 23) + (40 x -17)

920 + (-680)

= 240

<h3>d) 1673 x 99 – (-1673) </h3>

(1673 x 99) + 1673

1673 x 100

= 167300

<h3>e) 490 x 98 = 48020</h3>

Hope this helps ^-^

7 0
3 years ago
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