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Leona [35]
3 years ago
5

How do you determine whether to use substitution or elimination. give an example of a system that you would solve using each met

hod?
Mathematics
1 answer:
nadezda [96]3 years ago
3 0
You determine which one to use by seeing which one would be easier

elimination: 5x + 7y = 2
                  -5x + 6y = 6

substitution: y = 9x + 5
                  2y = 7x + 2
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Find the minimum value of
viva [34]

Answer:

Find the minimum and maximum values of the objective function subject to the given constrants. Objective function: C= 2x + 3y

Constraints:

x>0

y>0

Comment: These two conditions tell you the answers are in the 1st Quadrant.

-----------------------------

x +y < 9

Graph the boundary line: y = -x+9

Solutions points are below the boundary line and in the 1st Quadrant.

8 0
3 years ago
Which expressions are polynomial?
Korolek [52]
Polynomial means more than 1 term when all like terms are combined
terms are seperated by plus or minus symbols
you can't combine placeholders and numbers

y is 1 term, not poly
4x^3+y is 2 term, poly
2+s is 2 term, poly

answer is 4x^3+y and 2+s





cubic means highest power of the placeholder is 3
quadratic means highest power of placeholder is 2

trinomial means 3 terms

yep, 3 terms

4x^2+3x+5
highest power is 2
quadratic trinomial
5 0
3 years ago
The table shows the last holiday destination of 60 people.
Rzqust [24]

Answer:

Step-by-step explanation:

6 0
3 years ago
To measure a stone face carved on the side of a​ mountain, two sightings 900 feet from the base of the mountain are taken. If th
olga nikolaevna [1]

Answer:

Height of the stone​ face = 66.29 feet

Step-by-step explanation:

Refer the given figure, here we need to find height of the stone​ face,

Height of the stone​ face = CD

CD = AD - AC

In ΔABC we have

             tan31=\frac{AC}{AB}\\\\tan31=\frac{AC}{900}\\\\AC=540.77feet

In ΔABD we have

             tan34=\frac{AD}{AB}\\\\tan34=\frac{AD}{900}\\\\AD=607.06feet

CD = AD - AC = 607.06 - 540.77 = 66.29 feet

Height of the stone​ face = CD = 66.29 feet

7 0
4 years ago
If f(x)= -2 , what is x?
kkurt [141]
NANI?!?! WHERES g(x)
7 0
3 years ago
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