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3 years ago

One solution of x^2-64=0 is 8. what is the other solution?

2 answers:

8 0

Step 1: Add 64 to both sides.
x2−64+64=0+64
x2=64
Step 2: Take square root.
x=±√64
x=8 or x=−8
Answer:x=8 or x=−8

Hope this helps :D

ivann1987 [24]3 years ago

4 0

X² - 64 = 0
(x - 8)(x + 8) = 0

x = - 8, 8

Your other solution is - 8

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What's the difference between j(x) and just X in j(x)=-2x+4 ??

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J(x) is equivalent to Y. For example if you were to have a equation in slope intercept form it would be y=mx+b which can be written in the same way as your problem j(x)=mx+b. To sum it up j(x) is just another way to say y=

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2 years ago

Which graph represents the function f(x)=4⋅3x ? Please help!!!

S_A_V [24]

Answer:

Option D is correct.

Step-by-step explanation:

An exponential function is in the form of $y =ab^x$ where a is the initial value and b≠ 0 , b >1 .

Given: The function f(x) = y = $4 \cdot 3^x$ ......[1]

The domain is all real numbers and the range is y > 0.

y-intercept defined as the graph crosses the y-axis.

Substitute the value of x= 0 in [1] to solve for y;

y = $4 \cdot 3^0$ = 4

y-intercept = (0, 4)

End behavior:

when b =3 >1

then;

as $x \rightarrow \infty$ , $f(x)\rightarrow \infty$

as $x \rightarrow -\infty$ , $f(x)\rightarrow 0$

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2 years ago

Suppose that a state introduces a state income tax which will be at a flat rate of 3%. The state legislature wishes to estimate

Greeley [361]

Answer:

The mean income is more useful

Step-by-step explanation:

If you know the mean income, then you can obtain the total income by multiplying for the total population. Once you know the total income, you can deduce the amount of money collected by multiplting the total income by 0.03.

Knowing the median income does only help you so much. The mediam income is only a parameter that says that 50% of the population earn less than that. However, if you dont know how much the richer people earn, you cant deduce how much from taxes will you collect. For a simplified example, the sets A = {1,3,18} and B = {1,3,4} have the same median, 3. however A sums a total of 22, while B only sums 8.

The mode of income alone is also not enough. Again, You can have a lot of salaries ranging from similar values, but if you dont know the exact value of other clusters of salaries, specifically the biggest ones, you will lack a lot of information. As a simplified example, the Sets A = {1,3,3,3,3,3,3, 7, 7,7} and B = {1,3,3,3,3,3,3,3,3,75} have both of them 3 as the most frequent number, however A has a mean of 4, while B has a mean of 10, despite having only 1 mayor cluster of numbers.

Is short, the mean is the bets way to determine the amount of rax collection, because it puts more realistic 'weights' on higher income, and because it lets you obtain exact results for the total amount of income.

I hope this helped you!

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2 years ago

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gulaghasi [49]

Answer:

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2 years ago

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hope this helps!! :)

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3 years ago

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