2 years ago

Find the sum of X + y, when x= 3.1, and y= 5.4

1 answer:

4 0

So all this is is changing the x and y variables,

In this case, x = 3.1 and y = 5.4 so,

3.1 + 5.4

3 + 5 = 8

.1 + .4 = .5

8.5

You might be interested in

What is the answer to 6 1/6 - 3 5/6 =

antoniya [11.8K]

6 1/6 - 3 5/6= 2 1/3
Hope this Helps:D
Have a great rest of a brainly day!

7 0

2 years ago

DONT CLICK ON THIS ok lol

valentinak56 [21]

She can only buy 2 whole packs.

Acording to the graph, 2 whole pakcs will cost $22, and 3 whole packs will cost $33. She can't afford 3 whole packs as we can see as she only has $30.50.

Let me know if you have any questions, thanks!

5 0

2 years ago

Read 2 more answers

If 7 less than 4 times a number is two more than that number, what is the result when the number is subtracted from 50?

Tasya [4]

Answer:

4x-7=x+2

3x=9

x=3

3-50=-47

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

If we wanted to create a new 90% confidence interval from a different sample for the proportion of those with a two on one date

slava [35]

Answer: 271

Step-by-step explanation:

The formula we use to find the sample size is given by :-

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2$

, where $z_{\alpha/2}$ is the two-tailed z-value for significance level of $(\alpha)$

p = prior estimation of the proportion

E = Margin of error.

If prior estimation of the proportion is unknown, then we take p= 0.5 , the formula becomes

$n=0.5(1-0.5)(\dfrac{z_{\alpha/2}}{E})^2$

$n=0.25(\dfrac{z_{\alpha/2}}{E})^2$

Given : Margin of error : E= 0.05

Confidence level = 90%

Significance level $\alpha=1-0.90=0.10$

Using z-value table , Two-tailed z-value for significance level of $0.10$

$z_{\alpha/2}=1.645$

Then, the required sample size would be :

$n=0.25(\dfrac{1.645}{0.05})^2$

Simplify,

$n=270.6025\approx271$

Hence, the required minimum sample size =271

3 0

3 years ago

Six friends equally share a bag of popcorn. The bag contains 9 cups of popcorn. How many cups of popcorn should each friend get?

nadya68 [22]

Six friend =6
A bag popcorn = 9
Share equally 9/6 = 1.5 bag for each person

7 0

2 years ago

Read 2 more answers