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klio [65]
3 years ago
6

Evaluate. 3x^2 + 5x+1, when x = -2

Mathematics
1 answer:
forsale [732]3 years ago
6 0

Answer:

3

Step-by-step explanation:

Since we know x = -2 we can plug it into the equation

3*-2^2+5*-2+1

Solve!

3*-2^2+5*-2+1 = 3

Hope this helps!

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What is the value of x?
Viktor [21]

Answer:

x=6/5 or 1.2

Step-by-step explanation:

2.5x=x+3

2.5x-x= 3

2.5x= 3

divide both by 2.5

x= 6/5 or 1.2

8 0
3 years ago
What percent of 60 is 12? Show your work.
Semmy [17]
Percent formula : is/of = %/100
is = 12
of = 60
% = x
now we sub

12/60 = x/100
cross multiply
(60)(x) = (12)(100)
60x = 1200
x = 1200/60
x = 20

check..
0.20(60) = 12
12 = 12 (correct)

so 20% of 60 is 12
7 0
3 years ago
Read 2 more answers
-2=2+v over 4<br><br> Answer choices<br> A) -12<br> B) 12<br> C) -16<br> D) 16
svetlana [45]

Answer:

c

Step-by-step explanation:

negative and positive make a negative so it cant be 16 it has to be -16

4 0
3 years ago
Read 2 more answers
It is degrees and it says x 38⁰ and 75⁰​
lara [203]

Answer:

This question makes no sense at all what are you trying to find, what do you need help with

Step-by-step explanation:

7 0
3 years ago
What is the vertex of the graph of y = –x2? (–1, 0) (0, –1) (0, 0) (1, 1)
mestny [16]

Answer:

The vertex is (0, 0).

Step-by-step explanation:

Check out the parent function:  y = x^2.  The graph is a parabola whose vertex is (0, 0) and which opens upward.

Then y = -x^2 is the same but opens downward.  The vertex is (0, 0).

4 0
3 years ago
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