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Soloha48 [4]
3 years ago
8

How to find restrictions for x?? 3. F(x)=2 sqrt x-4

Mathematics
1 answer:
stealth61 [152]3 years ago
4 0

Answer:

  1. none
  2. none
  3. x ≥ 4

Step-by-step explanation:

The restrictions placed on the independent variable in a function are those necessary to ensure that the function is defined for all allowed values of that variable.

In the graphs of problems 1) and 2), we see that the functions are defined for all values of x, so there are no restrictions.

__

3. For the function ...

  f(x)=2\sqrt{x-4}

the value under the radical cannot be negative. The square root function is not defined for negative values, so the restriction is ...

  x -4 ≥ 0

  x ≥ 4 . . . . . . . add 4 to both sides of the inequality

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Which set of transformations would prove AGFE ~ AGHI?
Georgia [21]

Answer:

Reflect over x=-2 and dilate G'H'I' by a scale factor of 2 from point G

Step-by-step explanation:

First you'd have to reflect from x=-2 because its still on that line but the opposite way.

So we can already narrow it down to the second or last answer.

It wouldn't translate because that doesn't change the size. Its a dilation because the size has changed. Its dilated from point G because as you can see, G is the same point on both.

So the last answer choice is correct.

4 0
3 years ago
Cylinder has a radius of 12 inches and a height of 6 inches. Cylinder B has a volume of 648n. What is the percent change in the
Nadusha1986 [10]

so their difference is 864π - 648π = 216π.

if we take 864π to be the 100%, what is 216π off of it in percentage?

3 0
2 years ago
what is an equation of the line that is parallel to y equals negative 4x - 5 and passes through the point -2, 6
Bond [772]

y = - 4x - 2

the equation of a line in slope-intercept form is

y = mx + c ( m is the slope and c the y-intercept )

y = - 4x - 5 is in this form

with slope m = - 4

• Parallel lines have equal slopes

y = - 4x + c ← is the partial equation

To find c substitute (- 2, 6 ) into the partial equation

6 = 8 + c ⇒ c = 6 - 8 = - 2

y = - 4x - 2 ← equation of parallel line


3 0
3 years ago
FABRIC You can spend at most $60 on lace. Cotton lace is $2 per yard and linen lace is $3 per yard. Write an inequality for the
IgorLugansk [536]

Answer:

2c + 3l ≤ 60

No

Step-by-step explanation:

Let's say you buy c yards of cotton lace and l yards of linen lace. The cotton lace will cost $2 per yard, and for c yards, you have to pay $2 c times, coming to a total of 2*c for the cotton lace. For the linen lace, you'd have to pay 3*l for l yards. The total amount of lace is thus equal to cotton lace cost + linen lace cost = 2c + 3l.

Total amount needs to be less than or equal to 60 (at most 60), so total amount = 2c + 3l ≤ 60

We can then plug our values of cotton and linen lace into our equation

12 yards of cotton lace, 15 yards of linen lace

2c + 3l ≤ 60

2(12) + 3(15) ≤ 60

24 + 45 ≤ 60

69 ≤ 60

This is false, so you cannot buy these amounts of lace.

3 0
2 years ago
How do I solve this question
nika2105 [10]

Answer:

D

Step-by-step explanation:

Sum = -12

Product = -48

Factors = -12 , 4

-12 + 4 = - 8  & -12 * 4 = -48

x² - 8x - 48 = x² - 12x + 4x  - 4*12

                  = x(x - 12) + 4(x - 12)

                 = (x - 12) (x + 4)

5 0
2 years ago
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