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earnstyle [38]
3 years ago
8

Choose the correct first step(s) to solve the system using elimination. 4x + 7y = 6 and 6x + y = 2

Mathematics
1 answer:
exis [7]3 years ago
7 0
\left\{\begin{array}{ccc}4x+7y=6\\6x+y=2&|multiply\ both\ sides\ by\ (-7)\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}4x+7y=6\\-42x-7y=-14\end{array}\right}\\.\ \ \ -38x=-8
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17. What expression is equivalent to log(200) - log (2)? Calculate the answer.
IRINA_888 [86]

Answer: 2

Step-by-step explanation:

Recall from the laws of Logarithms:

Log a - Log b = Log ( a/b )

That means

Log 200 - Log 2 = Log ( 200/2)

= Log 100 , which could be written as

Log 10^{2}

Recall from laws of Logarithms:

Log a^{b} = b Log a

Therefore:

Log10^{2} = 2 Log 10

Also from law of Logarithm

Log 10 = 1

Therefore 2 Log 10 = 2 x 1

= 2

3 0
2 years ago
What is the coefficient in the algebraic expression 7 xy2 ?
Monica [59]
The answer is 7!

The number In front of the variable is always the coefficient.
5 0
3 years ago
THANK YOU FOR ANSWERING
anyanavicka [17]

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4 0
3 years ago
Slimpfy 48 show all steps
chubhunter [2.5K]

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4 0
3 years ago
Rectangle with area of 12 square units is dilated by a scale factor of 3. What is the area?
Olegator [25]

Answer:

36 units²

Step-by-step explanation:

rectangle with area of 12 square units is dilated by a scale factor of 3. What is the area?

Scale factor = Dimension of the new shape ÷ Dimension of the original shape.

we use the inverse formula

12 * 3 =<em> </em>

<em>36 units²</em>

<em>-----------------------</em>

check

36 : 12 = 3

the answer is good

7 0
1 year ago
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