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2 years ago

Simplify 6(x + y) + (x - y)

Mathematics

1 answer:

Arlecino [84]2 years ago

7 0

6(x + y) + (x - y) =

First, distribute the 6. Also, remove the second set of parentheses since it is unnecessary.

= 6x + 6y + x - y

Now add like terms. Remember that x is the same as 1x, and y is the same as 1y.

= 7x + 5y

Answer: 7x + 5y

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Q..3/4 of a piece of metal has a mass on 15 kg. What is the mass of 2/5 of a piece of metal ?

Margarita [4]

Answer

8kg

Explanation

3/4--------15

2/5-------x

cross multiplying

3/4×X = 2/5×15

3X/4 = 30/5

3X/4 = 6

cross multiplying

3X = 4×6

3X = 24

dividing bothsides by 3

3X /3 = 24/3

X = 8

therefore, the answer is 8 kg

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1 year ago

Mrs.sipp has 4.6 l of lemonade to serve her son's birthday guests. About how many millimeters should she pour into each glass?

vlabodo [156]

1 litre = 1000 ml
4.6 litre = 4600 ml

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2 years ago

What is the range of this absolute value function? a. -[infinity] < y ≤ 0 b. 0 ≤ y < [infinity] c. -[infinity] < y ≤ 7

tigry1 [53]

If the equation of the absolute value function is f(x) = |x + 1| + 7, then the range of the function is -∞ < y ≤ 7

<h3>How to determine the range of the absolute value function?</h3>

<em>The question is incomplete, so I will provide a general explanation</em>

Assume that the absolute value function is given as:

f(x) = |x + 1| + 7

Set the absolute value to 0

f(x) ≥ 0 + 7

Evaluate

f(x) ≥ 7

This means that the smallest value of the function is 7

Hence, the range of the absolute value function is -∞ < y ≤ 7