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Salsk061 [2.6K]
2 years ago
6

Please answer both questions.

Mathematics
1 answer:
mario62 [17]2 years ago
6 0

Answer:

1) (x-6)^2=49

2) C

Step-by-step explanation:

Subtract 12 x and you get

-x^2-12x+13=0

You will be left with, after making a perfect square

(x-6)^2=49

To get rid of the squared/2nd power, add plus or minus to the opposite side and square root both sides. You will be left with

x-6=plus or minus 7

Your answer comes out to the to problem. Setting both to 0, you get -13, and 1. -6 plus 7 is 1, and -6 plus a -7 is -13.

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Solve the inequality and state the answer in interval notations 3x-7 ≤ 14
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Answer:

Step-by-step explanation:

3x-7 ≤ 14

3x≤ 14+7

3x≤ 21

x≤ 21/3 = 7

=> x = (-∞;7]

That means that x can be any negative number and any positivi number (1,2,3...7)

4 0
4 years ago
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Answer:

Step-by-step explanation:

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Y varies directly as x and z. Y is equal to 16 when x=2 and z=4,find Y when x=1 and z=7​
maria [59]

Answer:

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Step-by-step explanation:

6 0
3 years ago
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8 0
2 years ago
Can someone please work through this one question so I know what to do for the other 9? How the testing system works for me is t
Aloiza [94]
<span>Scientific notation is the way that scientists easily handle very large numbers or very small numbers. Scientific notation is written by writting a decimal number between 1 and 10 together with an exponent of 10.

Given
(4.23\times10^{12})\div(9.0\times10^6)

First, using distributive property of numbers, seperate the decimal numbers and the exponents of 10, we have
(4.23\div9.0)\times(10^{12}\div10^6)=0.47\times10^{12-6}=0.47\times10^6

Because, scientific notation requires that the decimal number part be a number between 1 and 10, we move the decimal point 1 place foward and subtract 1 from the exponent of 10.

Therefore, </span><span>(4.23\times10^{12})\div(9.0\times10^6)
in standard notation is
4.7\times10^5</span>
6 0
3 years ago
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