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Gekata [30.6K]
3 years ago
15

Which expression is equivalent to (x+3)+y?

Mathematics
2 answers:
anzhelika [568]3 years ago
8 0
It’s A
x+(3+y) i dont know I just guessed
ozzi3 years ago
5 0

Answer:

b

Step-by-step explanation:

i dont know. i think rhis is my guess. just tell me the answer

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What is the area of a rectangle if 1 base is 14 in, the 2nd base is 3.5 in and the height is 8 in?​
algol13

Check the picture below.

notice, we have three pair of sides, let's add them all up to get the area

\stackrel{\textit{left and right}}{2(8\cdot 14)}+\stackrel{\textit{front and back}}{2(3.5\cdot 8)}+\stackrel{\textit{top and bottom}}{2(3.5\cdot 14)}\implies 378~in^2

5 0
2 years ago
The owner of a local restaurant surveyed her staff on their preference of uniform color. The results are displayed in the table
nignag [31]

Answer:

A is the answer - sample 1 and sample 2 are most representative because they are the same answer.  

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
What is the unit rate for 1/2 a cup for 4 recipes
VMariaS [17]
1/8 cupe for 1 recipe
1/8 • 4 = 4/8 = 1/2

Brainliest?
8 0
3 years ago
Read 2 more answers
Need help with this!!
wariber [46]

Answer:

below

Step-by-step explanation:

1) slope = rise / run

2 coordinates are (-4, 0), (0, 2).

2 - 0 = 2

0 -- 4 = 4

2 / 4 = 1/2 so the slope is 0.5 or ½

2) it crosses the y axis at the average of the origin and 4.

4 + 0 = 4 / 2 = 2 so y intercept is 2.

3) in y= mx + b form

f(x) = ½x + 2, or, f(x) = 0.5x + 2

3 0
2 years ago
Assume that you assign the following subjective probabilities for your final grade in your econometrics course (the standard GPA
rodikova [14]

Answer:

E(X) = 4*0.2 +3*0.5+ 2*0.2 +1*0.8+ 0*0.02= 2.78

So then the best answer for this case would be:

C. 2.78

Step-by-step explanation:

For this case we have the following probabability distribution function given:

Score         P(X)

A= 4.0       0.2

B= 3.0       0.5

C= 2.0       0.2

D= 1.0        0.08

F= 0.0       0.02

______________

Total          1.00

The expected value of a random variable X is the n-th moment about zero of a probability density function f(x) if X is continuous, or the weighted average for a discrete probability distribution, if X is discrete.

If we use the definition of expected value given by:

E(X) = \sum_{i=1}^n X_i P(X_I)

And if we replace the values that we have we got:

E(X) = 4*0.2 +3*0.5+ 2*0.2 +1*0.8+ 0*0.02= 2.78

So then the best answer for this case would be:

C. 2.78

3 0
3 years ago
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