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Artemon [7]
3 years ago
15

Is 4x + the square root of y = 12 a linear function

Mathematics
1 answer:
ivolga24 [154]3 years ago
3 0
I wouldn't say so, as if you rearrange that equation you get sqr root y = 12 - 4x. Then you square everything to get the value of y so you would end up with 144 - 16x^2.
Therefore, the x value has a power, so it would be a curved line
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Here is the photo someone please help
Alja [10]

Answer:

Rational

Integer

Whole

Real

Step-by-step explanation:

<u>Rational</u><u>:</u><u> </u>

The square root of 4 is 2, which is an integer (number without decimals). A number is only irrational if it has endless decimals after it.

<u>Integer</u><u>:</u>

A number without decimals

<u>Whole:</u>

A number without fractions; an integer.

<u>Real: </u>

Real numbers include whole numbers, rational numbers and irrational numbers- pretty much any number you can think of. The only numbers that ARENT considered real are imaginary numbers like √-1 and infinity.

7 0
3 years ago
A length is measured at 21 cm correct to two significant figures, what is the lower bound of the length and upper bound?
Andreyy89

Answer:

20.5 and 21.5

Step-by-step explanation:

It says 2 significant figures so the least it can possibly be is 0.5 less and the most it can be is 0.5 more as if it was, lets say 20.4 it would round down to 20 not 21.

7 0
2 years ago
Please can someone helpppp
GenaCL600 [577]
A) 8 - add up the how many numbers there are after the 4 on the left column

b) 41 - line up all of the numbers from least to greatest and find the middle number

c) 39 - do step b again but this time remove the oldest worker and add the younger one in
6 0
3 years ago
Read 2 more answers
Exspress the ratio from the simplest form 72:36
Vedmedyk [2.9K]
First, find the GCF. For these two numbers, it is 36. (Because 36 times 1 is 36 and 36 times 2 is 72)
Divide both sides by this, which gives you a
2:1 ratio
8 0
3 years ago
Read 2 more answers
Divid 15 into two parts such that the sum of their reciprocal is 3/10
Klio2033 [76]
From the information obtained from the question, two equations can be created:
 
Let x and z be the two numbers (parts)

\frac{1}{z}   +   \frac{1}{x}  =   \frac{3}{10} .  .  .  . (1)

z  +   x  =  15  .  .  .  . (2)

By transposing (2), make 'z' the subject of the equation
z = 15 - x  .  .  .  . (3)

By substituting (3) into equation (1) to find a value for x
\frac{1}{(15 - x)} + \frac{1}{x} = \frac{3}{10}

\frac{15}{( 15 - x ) ( x )}  =   \frac{3}{10}

3 ( - x^{2}  + 15 x )  =  150

3 x^{2}  - 45x + 150 = 0

⇒  ( x - 5 )  ( x - 10 )  = 0

∴ either ( x - 5) = 0        OR    ( x - 10 ) = 0

Thus x = 5 or x = 10

By substituting the values of x into (2) to find z

     z + (5) = 15       OR      z + (10) = 15

    ⇒      z = 10      OR                 z = 5

So, the two numbers or two parts into which fifteen is divided to yield the desired results are 5 and 10.





5 0
3 years ago
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