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serious [3.7K]
3 years ago
12

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

Mathematics
2 answers:
Pavlova-9 [17]3 years ago
8 0
Step 1: Add 64 to both sides.<span><span><span><span>
x2</span>−64</span>+64</span>=<span>0+64</span></span><span><span>
x2</span>=64</span>
Step 2: Take square root.<span>
x=<span>±<span>√64</span></span></span><span><span>
x=<span><span>8<span> or </span></span>x</span></span>=<span>−8</span></span>
Answer:<span><span>x=<span><span>8<span> or </span></span>x</span></span>=<span>−<span>8

Hope this helps :D</span></span></span>
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 ??
DIA [1.3K]
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=
5 0
2 years ago
Which graph represents the function f(x)=4⋅3x ?<br> 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

therefore, the only graph which represents the function y = 4 \cdot 3^x   is Option D



6 0
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 '<em>weights</em>' on higher income, and because it lets you obtain exact results for the total amount of income.

I hope this helped you!

8 0
2 years ago
Please help! Correct answers only please!
gulaghasi [49]

Answer:

1/4

Step-by-step explanation:

Since on this spinner, there are 2 odd numbers, 2 even numbers, and 4 numbers in total, for the both spins there is a 1/2 probability that you land on the desired outcome. 1/2*1/2=1/4. Hope this helps!

7 0
2 years ago
Write a function rule that represents the sentence.
rewona [7]
8 more than half of n is 8 + n/2. That is c.
So,
c = n/2 + 8
or c = 8 + n/2.
The answer is a. 

hope this helps!! :)
6 0
3 years ago
Read 2 more answers
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