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2 years ago

4x+2(3x-9)=42 what is x equal

1 answer:

katrin2010 [14]2 years ago

8 0

4x+2(3x-9)=42
first we want to distribute the 2 using the distributive property
4x+6x-18=42
Then we simplify
10x-18=42
we add 18 to both sides
10x=60
divide both side by 10
x=6

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S_A_V [24]

Answer: $(3, \infty)$

Step-by-step explanation:

q(x) is increasing for $x > 3$ .

p(x) is increasing for $x \geq -2$ .

So, both functions are increasing for $(3, \infty)$ .

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1 year ago

How much is 30-[(19x2)-(3x4)]

aliina [53]

-20 is ur answer because u do the stuff in the "()" first

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2 years ago

What is36.8+[11.6-(2.5×3)]2

givi [52]

Answer:

Step-by-step explanation:

The answer is 33.4

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2 years ago

A coin contains 1.25 grams of nickel and 3.75 grams of copper, for a total weight of 5 grams. What percentage of the metal in th

otez555 [7]

So,

To find the percentage that the copper comprises, just divide the amount of copper by the total amount of metal in the coin. In this case, we will change the denominator so that it is 100, which can easily be converted into a percentage, which is really just a fraction out of 100.

$\frac{3.75}{5} = \frac{7.50}{10} = \frac{75}{100}$

75%

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7 0

2 years ago

Classify each sequence as arithmetic, geometric or neither

Karolina [17]

Answer:

Geometric sequence = ⁵/9, ⁵/3, 5, 15, 45. . .

Arithmetic sequence = 16, 11, 6, 1, -4 . . .

Step-by-step explanation:

A geometric sequence is a sequence of numbers, in which every number in the sequence after the first term is multiplied by a common ratio, which gives us the next term. The common ratio is the ratio of a term to the term before it.

On the other hand, an arithmetic sequence is a sequence of number have a common difference between each consecutive terms. This common difference is gotten by subtracting a term from the term before it.

Now let's examine each sequence given:

==>16, 11, 6, 1, -4 . . .

11 - 16 = -5

6 - 11 = -5

1 - 6 = -5

-4 - 1 = -5

This is an arithmetic sequence. The commons difference "-5" is the same

==>⁵/9, ⁵/3, 5, 15, 45. . .

⁵/3 ÷ ⁵/9 = ⁵/3 × ⁹/5 = ⁹/3 = 3

5 ÷ ⁵/3 = ⁵ × ⅗ = 3

15 ÷ 5 = 3

45 ÷ 15 = 3

The common ratio "3" is the same. This is a geometric sequence.

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2 years ago