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Vera_Pavlovna [14]
3 years ago
8

If the range of f(x)= 4x+1 is 9 find its domain. *​

Mathematics
1 answer:
dimaraw [331]3 years ago
8 0

Answer:f(x)=4x+1=9

=> 4x=9-1

=> 4x=8

=>x=2

Step-by-step explanation:

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2. Which equation is equivalent to x+8 = 21?
lakkis [162]

Answer:

The most obvious one i can think of would be

x = 13

Step-by-step explanation:

x + 8 = 21

x + 8-8 = 21-8

x = 13

3 0
4 years ago
Find the error & find the correct answer 2In(x)=In(3x)-[In(9)-2In(3)] In(x^2)=In(3x)-[In(9)-In(9)] In(x^2)=In(3x)-0 In(x^2)=
Art [367]

Answer:

Error:lnx^2=ln 3x not ln\frac{3x}{0}

Solution:x=0 and 3

Step-by-step explanation:

We have to find the error and correct answer

Given:2ln x=ln(3x)-[ln9-2ln(3)]

lnx^2=ln(3x)-[ln9-ln3^2]

Using the formula

alog b=logb^a

lnx^2=ln(3x)-[ln9-ln9]

lnx^2=ln(3x)-0

lnx^2=ln(3x)

x^2=3x

x^2-3x=0

x(x-3)=0

Therefore, x=0 and x=3

But last step in the given solution

lnx^2=ln\frac{3x}{0}=\infty

It is wrong this property is used when

log m-log n then

log\frac{m}{n}

Hence, the student wrote  lnx^2=ln\frac{3x}{0}instead of lnx^2=ln3x and solution is given by

x=0 and x=3

4 0
3 years ago
The measure of angle a 73 degrees classify the angle as acute right obtuse or straight​
aliya0001 [1]
The answer is Acute Angle
4 0
3 years ago
A circle has a circumference of 3.14<br> What is the diameter of the circle?
Sonbull [250]
3.82 is the answer for that but what is the unit of measurement

4 0
3 years ago
16. A triangle has side lengths of 6, 8, and 10. Is it a right triangle? Explain. (2 points)
timurjin [86]

Answer:

Yes, because when the side lengths of a triangle are in the ratio 3: 4: 5, then it is a right triangle. These sides are 6: 8: 10, then the triangle is a right one.

Step-by-step explanation:

7 0
3 years ago
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