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Juli2301 [7.4K]
3 years ago
6

3sqrt x - 4=5 solve for x

Mathematics
1 answer:
andrezito [222]3 years ago
3 0
3\sqrt{x}-4=5\ \ \ \ |add\ 4\ to\ both\ sides\\\\3\sqrt{x}=9\ \ \ \ |divide\ both\ sides\ by\ 3\\\\\sqrt{x}=3\ \ \ \ |square\ both\ sides\\\\\boxed{x=9}
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Is this a function idk also what's the domain and range
masya89 [10]
This is a function since it passes the vertical line test. It is impossible to draw a single vertical line to have it pass through more than one point on the curve.

The domain is the set of numbers x such that x is between -3 and +3 excluding those endpoints. In other words, the domain is -3 < x < 3. We never actually get to either endpoint because of the vertical asymptotes.

The range is the set of all real numbers. It is possible to get any output we want depending on the specific input. 
3 0
3 years ago
Y=-1/2x +7
yarga [219]

Answer:

B; (2,-4)

Step-by-step explanation:

The general equation of a straight line is;

y = mx + b

where m is the slope and b is the y-intercept

So from the question, when we look at the given equation, its slope is -1/2

mathematically, when two lines are perpendicular, the product of their slopes is -1

thus;

m1 * m2 = -1

m2 * -1/2 = -1

-m2 = -2

m2 = 2

The general equation form is;

y-y1 = m(x-x1)

where (x1,y1) = (4,0)

y-0 = 2(x-4)

y = 2x - 8

So, now we look at the point that will work for this equation

For the line that will work, if we substitute its x-value, we get the y-value

Let us take a look at option B

y = 2(2) -8 = 4-8 = -4

we can see that (2,-4) works

4 0
2 years ago
You and your friend drive toward each other. The equation 50h = 190 – 45h represents the number h of hours until you and your fr
Evgesh-ka [11]

Answer:

C. 2 hours

Step-by-step explanation:

50h= 190-45h

50h + 45h = 190

95h = 190.

190÷95= 2h

8 0
3 years ago
Which statement is true regarding the graphed functions?
xenn [34]

Answer:

A

Step-by-step explanation:

because I mean u have to no what's a function and what's not a function is when the lines don't touch and a non function is when that do

5 0
3 years ago
Read 2 more answers
What will be the coordinates of N after a 90 degree counterclockwise around the origin
Virty [35]

Answer:

The original point (x , y) —> the point rotated (-y , x)

Step-by-step explanation:

8 0
3 years ago
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