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3 years ago

What is the domain of the function in this table ?

Mathematics

2 answers:

gayaneshka [121]3 years ago

4 0

The answer is C just because the domain is the x in an x,y pair

ankoles [38]3 years ago

4 0

Hello from MrBillDoesMath!

Answer:

Choice C

Discussion:

The domain of a function can be thought of as the set of "x" values for which it is defined. So Choice C is the correct answer. (Note that choice A is NOT the answer as it contains (x,y) pairs, not single "x" values)

Thank you,

MrB

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14 - 2 ( 1+2) answer

riadik2000 [5.3K]

That would be 8. first parenthesis, then multiply, then subtract.

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3 years ago

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Lines 3x-2y+7=0 and 6x+ay-18=0 is perpendicular. What is the value of a?

BlackZzzverrR [31]

Answer:

$\boxed{\sf a = 9 }$

Step-by-step explanation:

Two lines are given to us which are perpendicular to each other and we need to find out the value of a . The given equations are ,

$\sf\longrightarrow 3x - 2y +7=0$

$\sf\longrightarrow 6x +ay -18 = 0$

Step 1 : Convert the equations in slope intercept form of the line .

$\sf\longrightarrow y = \dfrac{3x}{2} +\dfrac{ 7 }{2}$

and ,

$\sf\longrightarrow y = -\dfrac{6x }{a}+\dfrac{18}{a}$

Step 2: Find the slope of the lines :-

Now we know that the product of slope of two perpendicular lines is -1. Therefore , from Slope Intercept Form of the line we can say that the slope of first line is ,

$\sf\longrightarrow Slope_1 = \dfrac{3}{2}$

And the slope of the second line is ,

$\sf\longrightarrow Slope_2 =\dfrac{-6}{a}$

Step 3: Multiply the slopes :-

$\sf\longrightarrow \dfrac{3}{2}\times \dfrac{-6}{a}= -1$

Multiply ,

$\sf\longrightarrow \dfrac{-9}{a}= -1$

Multiply both sides by a ,

$\sf\longrightarrow (-1)a = -9$

Divide both sides by -1 ,

$\sf\longrightarrow \boxed{\blue{\sf a = 9 }}$

Hence the value of a is 9 .

8 0

3 years ago

Pppppplllllleeeaaaassssseeee helllllllllpppppp mmmmmmmeeeee

Paul [167]

You didn't show all answer choices unfortunately, but basically during neap tide, the moon is either above or below the earth, in pictures (vertical). And the right half will always be in shadow.
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4 years ago

A fishing boat lies 200 m due south of a large tree on the shoreline and 300 m southwest of the dock. The shoreline runs East to

Lunna [17]

Tree...........................dock
.
.
.
.
.
boat

use Pythagorean Theorem to satisfy...a^2 + b^2 = c^2

200^2 + b^2 = 300^2
b^2 = 300^2 - 200^2
b^2 = 50000 (get square root of each)
b = 223.606 (rounded to the nearest tenth.... = 223.6

4 0

3 years ago

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Can someone help please?

Serggg [28]

Answer:

lower bound: 315 litres

upper bound: 324 litres

Step-by-step explanation:

The following rules apply:

if the last digit of the number is 1, 2, 3, or 4; it is rounded down

if the last digit of the number is 5, 6, 7, 8, or 9. ; it is rounded up

So:

314 is rounded to 310

315 is rounded to 320

324 is rounded to 320

325 is rounded to 330

3 0

3 years ago