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3 years ago

Help me ! ! ! ! ! ! ! ! ! !

Mathematics

2 answers:

DENIUS [597]3 years ago

6 0

$- \frac{1}{6} x \leqslant 12 \\ \\ x \geqslant - 72$
the answer to the question is c

lesantik [10]3 years ago

3 0

Answer:

Step-by-step explanation:

Solve for x by multiplying by the reciprocal on both sides.

$-\frac{1}{6}x\leq 12\\x\geq 12(-\frac{6}{1})\\x\geq -72$

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Need help on this Please answer ASAP

Vedmedyk [2.9K]

$Domain:\ x\neq0\\\\\dfrac{1}{x}+\dfrac{1}{3x^2}=\dfrac{1}{3x}\\\\\dfrac{1\cdot3x}{x\cdot3x}+\dfrac{1}{3x^2}=\dfrac{1}{3x}\\\\\dfrac{3x}{3x^2}+\dfrac{1}{3x^2}=\dfrac{1}{3x}\\\\\dfrac{3x+1}{3x^2}=\dfrac{1}{3x}\qquad\text{cross multiply}\\\\(3x)(3x+1)=(3x^2)(1)\qquad\text{use distributive property}\\\\(3x)(3x)+(3x)(1)=3x^2\\\\9x^2+3x=3x^2\qquad\text{subtract}\ 3x^2\ \text{from both sides}\\\\6x^2+3x=0\\\\3x(2x+1)=0\iff3x=0\ \vee\ 2x+1=0\\\\3x=0\qquad\text{divide both sides by 3}\\x=0\notin Domain$

$2x+1=0\qquad\text{subtract 1 from both sides}\\\\2x=-1\qquad\text{divide both sides by 2}\\\\\boxed{x=-\dfrac{1}{2}}\to\boxed{A)}$

8 0

3 years ago

Witch ratio is equivalent to 3:9

Ket [755]

Answer:

Step-by-step explanation:

There are many. Examples are:

1:3

2:6

6:18.

3 0

3 years ago

Suppose a researcher compiled a data set consisting of the following variables for a sample of 100 retired men. For each variabl

kondaur [170]

Answer:

a) Discrete Variable

b) Discrete Variable

c) Discrete Variable

d) Continuous Variable

Step-by-step explanation:

We have to identify the given variable as discrete r continuous.

Discrete Variables:

They are expressed in whole numbers.
They are counted not measured.
They cannot take any value within an interval.

Continuous Variables:

They are expressed in decimal numbers.
They are measured not counted.
They cannot take any value within an interval.

a) The number of countries ever visited

Since number of countries will always be expressed in whole numbers and not decimals. Also, they will always be counted and not measured. Thus, it is a discrete variable.

b) The number of sons

Since number of sons will always be expressed in whole numbers and not decimals. Also, they will always be counted and not measured. Thus, it is a discrete variable.

c) Shoe size

Shoe size are expressed in whole number. The underlying measure is length of feet which is a continuous variable but shoe size are always given in whole number. Thus, they cannot take any value within an interval. Thus, it is a discrete variable.

d) Body temperature

Body temperature can be expressed in decimal. A Body temperature of 42.5 makes sense. Thus, they can take any value within an interval. Also, it is measured not counted. Thus, it is a discrete variable.

8 0

3 years ago

Use the distributive property to simplify the expression 3(x+4)

Sveta_85 [38]

Answer: x=-4

Step-by-step explanation:

5 0

4 years ago

Can u help me with this :p

Ne4ueva [31]

Answer:

12.5

Step-by-step explanation:

10(1/2+3/4)

5+7.5

12.5

10(1/2)+(8(3/4)-1)

5+(6-1)

5+5

4 0

3 years ago