-3 because it shows the value right there
Answer:a)EF congruent to QR
Step-by-step explanation:
We let x as the cost of one ounce of Sumatra and y as the cost of one ounce of Celebes Kalossi. For mixture 1, we have 12x + 4y = 32 and for mixture b, we have 4x + 12y = 40
First, Multiply eq. 1 by 4
4(12x + 4y = 32)4 ⇒ 36x + 12y = 96
We now have
(36x + 12y = 96) – (4x + 12y = 40)
<span>X = 1.75 ⇒ cost of one ounce of Sumatra
</span>
Substitute x to either equation to get the value of y
12(1.75) + 4y = 324
y = 32-21
4y = 11
Y = 2.75 ⇒ cost of one ounce of Celebes Kalossi
Answer:
The co variance of the midterm and final exam scores is 58.76.
Step-by-step explanation:
The formula to compute the sample co variance is:
The values are computed in the table below.
Compute the co variance as follows:
Thus, the co variance of the midterm and final exam scores is 58.76.
A consistent , independent system of equation is one that has at least one solution.It is independent because it has a single solution.
Step-by-step explanation:
The three types of systems of linear equations in two variables and three types of solutions.
An independent system has exactly one solution pair (x,y). The point of intersection presents the single solution.
An inconsistent system has no solution.such equations will produce two parallel lines with no solution.
A dependent system has infinitely many solution.Such lines are coincident.
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Equations: brainly.com/question/2595790
Keyword : consistent, independent , equations
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