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blagie [28]
3 years ago
8

3 times the sum of 3/4 + 2/6

Mathematics
2 answers:
slava [35]3 years ago
8 0
You add first            Find the common denominator, which is 12
3      2        9         4        13
_  +  _ =    __  +  __  =   __
4      6       12       12       12


13       3       39
__  x  __ = ____ = 3 and 1/4    
12       1        12
Anna11 [10]3 years ago
7 0
3 * (3/4 + 2/6) = 3 1/4
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It takes 0.5 gallon of cream to make 1 pound of butter.
worty [1.4K]

Answer:

0.5 pounds of butter.

Explanation

X pounds for 0.25 gallons.

0.5 gallon of cream - 1 pound of butter

0.25 gallons of cream - X pounds of butter

Applying cross multiplication:

0.5X = 0.25

X = 0.25 over 0.5 or 0.25/0.5

X = 0.5

Therefor, you could make 0.5 pounds of butter with 0.25 gallons of cream.

7 0
3 years ago
A bathtub is being filled at a rate of 4 liters per minute. Can this situation be
geniusboy [140]

Answer:

<em>Yes, this is a linear function because the rate of change is constant</em>

Step-by-step explanation:

<u>Linear Functions</u>

We can recognize a linear relation between variables x and y when they can be represented by a formula like

y=mx+b

Where m is the rate of change and it has a constant value. More specifically, a proportional relationship is a special case where b=0, meaning that every value of y divided by the corresponding value of x, is constant.

The situation described in the question says a bathtub is being filled at a rate of 4 liters per minute. It means that every minute, 4 liters are constantly being added to the existing quantity. This is a constant rate of change, so the correct answer is

"Yes, this is a linear function because the rate of change is constant"

3 0
3 years ago
What is the sum of 2x^2 and 2x^3
jeyben [28]

For this case we have the following expression:

2x ^ 2 + 2x ^ 3

The terms are not similar, so they cannot be added.

<em>Examples of similar terms:</em>

x ^ 3 + x ^ 3 = 2x ^ 3\\3x ^ 4 + 2x ^ 4 = 5x ^ 4

Then, the expression given can only be rewritten as:

2 (x ^ 2 + x ^ 3)

This is taking common factor 2 to both terms.

Answer:

2 (x ^ 2 + x ^ 3)

7 0
3 years ago
What is the value of x?<br> Enter your answer in the box
Marina CMI [18]

Answer:

x = 45º

Step-by-step explanation:

well since a triangle has to equal 180º

then we just have to subtract 88º and 55º from 180º

180 - 80 - 55 = 45

therefore, x = 45

6 0
3 years ago
If angle DAB is 30 degrees, angle ABD is 60 degrees, and line segment BD has a length of 30, what is the length of side a?
Natali [406]

Answer:

The length of side a is 30

Step-by-step explanation:

because the side of an angle is the side it's pointing at which is BD. BD = a = 30

5 0
3 years ago
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