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DENIUS [597]
2 years ago
8

There are five envelopes on a table. Four of the envelopes are marked 8, 2, 4 and 1. You are told that the mean of the numbers o

n the envelopes is 4. What is the number on the fifth envelope?
Mathematics
1 answer:
Lostsunrise [7]2 years ago
3 0

Answer: 16

Step-by-step explanation:

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2^(x+2)=2048<br>Solving for x​
svetoff [14.1K]

x=9 Hope this helps!!

4 0
3 years ago
Can someone please answer the problem in the picture?
Elenna [48]

Answer:

Rate of change is 6/7      Initial value: 6

Step-by-step explanation:

To find the slope (which is the rate of change), use (y1 - y2)/(x1 - x2).

x1 and y1 will be (0, 6)    

x2 and y2 will be (7, 0)

Note that x1 x2 y1 y2 can be any points on the line, I just chose these because they were x and y-intercepts.

(6 - 0)/(0 - 7)  =  6/7

The initial value is simply the y-intercept, which is 6.

8 0
3 years ago
Someone help I really need it.
NeX [460]

Answer:

c

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
PLEASE help me with this equation ​
Brilliant_brown [7]

Answer:

1/25

Step-by-step explanation:

I worked out the equation!

3 0
3 years ago
Read 2 more answers
Compare Look at these equations. Do you think they are all linear equations? Can they
Georgia [21]

Answer:

Yes they can all be written in y = mx + b. You just have to move the terms around.

Step-by-step explanation:

y = 2x -3, this is already in slope-intercept form

Now, y - 2 = x + 2: We can add 2 on both sides to cancel out the one on the left side:

y - 2 = x + 2

y - 2 + 2 = x + + 2

y = x + 4 <-- This is in y = mx + b form

Now the last one, 3x = 9 + 3y

We can first divide all terms by 3,

3x = 9 + 3y

/3     /3   /3

x = 3 + y: Then we can subtract 3 from both sides:

x - 3 = 3 + y - 3

x - 3 = y

These are all linear equations because none of the x's have bigger powers than 1. x^2 is a quadratic equation and x^3 is cubic equation.

6 0
2 years ago
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