All categories

3 years ago

the average (arithmetic mean) of t and y is 15, and the average of w and x is 15. what is the average of t, w,x,and y

1 answer:

5 0

Oi :)

$\frac{t+y}{2}=15 \\ \\ t+y=15*2 \\ t+y=30$
--------------------------------------------------------------------------------------------------------------------------
$\frac{w+x}{2}=15 \\ \\ w+x=15*2 \\ w+x=30$
---------------------------------------------------------------------------------------------------------------------------
Logo:
$\frac{t+y+w+x}{4}=??? \\ \\ \frac{30+30}{4} \\ \\ \frac{60}{4} \\ \\ 15$
-----------------------------------------------------------------------------------------------------------------------------
Answer = 15

Boa Noite. Bons Estudos !

You might be interested in

12 is what percentage of 80

PIT_PIT [208]

Answer: " 15 % " .

_______________________________

→ " 12 is  15%  of 80 " .

_______________________________

Step-by-step explanation:

_______________________________

12 = (n/100) * 80 ;

12 = (80n) /100 ; Solve for "n:

Note: 80/100 = (80/10) / (100/10) = (8/10) = 0.8 ;

12 = (0.8)n ;

↔ (0.8n) = 12

Multiply each side of the equation by "10" ; to get rid of the "decimal" ;

10 * (0.8n) = 10 * 12 ;

to get:

_______________________________

8n = 120 ;

Divide each side of the equation by "8" ;

to isolate "n" on ONE SIDE of the equation; & to solve for "n" ;

8n/8 = 120/ 8 ;

_______________________________

to get:

_______________________________

n = 15 .

_______________________________

Answer: " 15 % " .

_______________________________

→ " 12 is  15%  of 80 " .

_______________________________

Hope this helps!

Best wishes!

_______________________________

4 0

3 years ago

Henry combines 7.49 litters of red paint with 6.26 litters of red paint and pours it in to 4 container with 0.43 litters of pain

11111nata11111 [884]

To find the answer we start by adding the contents of both containers together
7.49 + 6.26 = 13.75
Since we know that there is leftover paint we are going to subtract the leftovers from the total of combined paint
13.75 - 0.43 = 13.32
The combined paint is poured into 4 containers so we divide our combined total minus the leftovers by 4
13.32/4 = 3.33
Answer: There are 3.33 liters of paint in each container

5 0

2 years ago

11 = − 3k − 22 − 8k K equals what?

butalik [34]

11 = -3k - 22 - 8k

11 = -11k - 22 added like terms (-3k and -8k)

+22 +22

33 = -11k

$\frac{33}{-11} = \frac{-11k}{-11}$