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2 years ago

Which expression is equivalent to -2(x - 3y + 5z)?

Mathematics

2 answers:

pogonyaev2 years ago

8 0

Answer:

-2x + 6y - 10z

Step-by-step explanation:

distribute the -2 to the numbers inside the ()

Svetllana [295]2 years ago

3 0

Answer:

−2x+6y−10z

Step-by-step explanation:

You might be interested in

Find four fractions between 1/10 and 1/8

Alex17521 [72]

9514 1404 393

Answer:

5/48, 5/46, 5/44, 5/42

Step-by-step explanation:

We can choose unit fractions with denominators between 8 and 10, separated by (10-8)/5 = 0.4 units:

1/8.4 = 5/42

1/8.8 = 5/44

1/9.2 = 5/46

1/9.6 = 5/48

Check

1/8 = 0.125
5/42 ≈ 0.119
5/44 ≈ 0.114
5/46 ≈ 0.109
5/48 ≈ 0.104
1/10 = 0.100

_____

Additional comment

There are an infinite number of such fractions. We are given unit fractions with different denominators, so it works reasonably well to choose denominators between those given. Then the trick is to convert the fraction to a ratio of integers. In this case, multiplying by (5/5) does the trick.

Another approach is to write the fractions with a common denominator, then choose numerators between the ones given. For example, 1/10 = 4/40, and 1/8 = 5/40, so you could write some fractions with numerators between 4 and 5. Possibilities are 4.1/40 = 41/400, 4.3/40 = 43/400, 4.7/40 = 47/400, 4.9/40 = 49/400.

6 0

2 years ago

Please help if you can

dolphi86 [110]

Answer:

x=4 or x=-5/7

Step-by-step explanation:

4 0

2 years ago

Find f(-2) for f(x) = 3x +4.

Bingel [31]

Answer:

f(- 2) = - 2

Step-by-step explanation:

To evaluate f(- 2) substitute x = - 2 into f(x)

f(- 2) = 3(- 2) + 4 = - 6 + 4 = - 2

5 0

2 years ago

Select the locations on the number line to plot the points 2, 1, and −4 .

rodikova [14]

Answer:

-5-4-3-2-1 0 1 2 3 4 5

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

A system of inequalities is graphed below. The variable x represents the number of cans someone is buying, and y represents the

8090 [49]

We have that
We will analyze each case to verify the answer
see the attached figure

Point A) 7 cans and 140 bottles------------> (x,y)=(7,140)----> is not solution
Point B) 12 cans and 40 bottles------------> (x,y)=(12,40)----> is not solution
Point C) 8 cans and 120 bottles------------> (x,y)=(8,120)----> is a solution
Point D) 9 cans and 70 bottles------------> (x,y)=(9,70)-------> is a solution

the answer is
the solutions are
8 cans and 120 bottles
9 cans and 70 bottles

6 0

2 years ago