When you multiply exponential expressions that have the same base, you simply add the exponents. This is true for both numbers and variables. When you include other numbers in the multiplication, you simply factor and break the expression into several multiplications.
2^5 * 2^x= 2^(5 + X)
The first statement is false and answer to second statement is no.
The mentioned information does not state that x and y are linearly related or not. If they are not related in linear way, the mean value of y would not be located at the mean of the x values.
Confidence intervals indicate the mean or population of the sample. For the confidence interval of sales of pizza stores, the similar data would be required for comparison using statistics tool. Hence, the relevant data should be sales of nearby pizza stores till now. Thus, the mentioned statement is irrelevant.
Learn more about confidence interval -
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75 mph because you divide 337.5 by 4.5
Answer:
Step-by-step explanation:
Given system is-
-2x+2y+3z=0 -------------(1)
-2x-y+z=-3 ----------------(2)
2x+3y+3z=5 --------------(3)
From (1)-(2) we get
3y+2z=3 ----------------(4)
Again from (2)+(3),
2y+4z=2 ----------------(5)
Now multiplying equation (4) by -2
-6y-4z=-6 --------------(6)
Adding (5) and (6)
-4y=-4
dividing by -4
y=-4 / -4
=1
So, y=1 ,
using y=1 in (5)
2(1)+4z=2
or, 2+4z=2
or, 4z=2-2
or, 4z=0
or, z=0
using y=1 and z=0 in (3)
2x+3(1)+3(0)=5
or, 2x+3+0=5
or, 2x=5-3
or, 2x=2
or, x=2/2
=1
So, the solution is-
(x,y,z)=(1 , 1 , 0)
The answer is 7.04 or to round it it would be 7
