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riadik2000 [5.3K]
3 years ago
13

For the functions f(x)=9x2+8x+2 and g(x)=4x2, find (f+g)(x) and (f+g)(−2)

Mathematics
1 answer:
ratelena [41]3 years ago
8 0

Answer:

<h2>hey I'm I'm not sure but I think that the answer is 3</h2>
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Using substitution to solve the system below, what expression should be substituted into the first equation? 2x-4y=-4 and x+2y=8
inna [77]

Answer:

Given the system of equation:

2x-4y=-4                    ......[1]

x+2y=8                      ......[2]

we can rewrite equation [2] as;

x = 8-2y                ......[3]

Substitute equation [3] into [1] to eliminate x, and solve for y;

2(8-2y)-4y = -4

Using distributive property: a\cdot (b+c) = a\cdot b+ a\cdot c

16-4y -4y = -4

Combine like terms;

16 - 8y = -4

Add 4 to both sides we have;

20 - 8y = 0

Add 8y to both sides we have;

20 = 8y

Divide 8 to both sides we have;

y = 2.5

Substitute the y-value in [3] we have;

x = 8-2(2.5)

x = 8 - 5 = 3

Therefore, the  expression should be substituted into the first equation is, x = 8-2y  and also the value of x = 3 and y = 2.5

5 0
3 years ago
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3a. The graph shows a school's profit P for selling x lunches on one day. PART A: What is the school's profit for selling 120 lu
konstantin123 [22]

Answer:

where is the graph

Step-by-step explanation:

5 0
3 years ago
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A man bought a $250 suit and 4 shirts for $398.How much did he spend per shirt?
iren [92.7K]

Answer:

99.5

Step-by-step explanation:

398 ÷ 4

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Which equation is equivalent to
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Answer:

B

Step-by-step explanation:

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