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lina2011 [118]
3 years ago
8

Which value must be added to the expression x2 + x to make it a perfect-square trinomial?

Mathematics
2 answers:
exis [7]3 years ago
8 0
Answer is 1/4

using
(a+b)^2 = a^2 + 2 a b + b^2

so (x + 1/2)^2 = x^2 + 2 (1/2) (x) + 1/4 = x^2 + x + 1/4
Nataly [62]3 years ago
7 0

Answer:

14

Step-by-step explanation:

ik it

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Evaluate the expression below for x = 1, y = –2, and z = 3.
galben [10]
(3x - 2y) / (z + 4)........x = 1, y = -2, z = 3
now we start subbing

((3(1) - 2(-2)) / (3 + 4).....simplify
(3 + 4) / (3 + 4) =
7/7 =
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3 0
3 years ago
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OleMash [197]
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3 years ago
Which is more, 5 liters or 5,000 milliliters?
yawa3891 [41]

Answer:

they're equal

Step-by-step explanation:

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3 years ago
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there are 13 animals in a barn. some are ducks and some are pigs. there are 40 legs in all. how many of each animal are there?
konstantin123 [22]
Let X be chickens
Let Y be pigs,
then x+y=13
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The system of the equations
[X+y=13
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Divide the second equation by 2
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subtract the first equation from the second one
y=20-13
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x=6 chickens
6 0
3 years ago
Complete this table<br> 3°<br> 3<br> 32<br> 38<br> 34<br> 35<br> 36<br> 1<br> 3<br> 9<br> 27<br> 729
sveta [45]

3⁴= 3×3×3×3= 81

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hope it helps! please mark me brainliest

thank you!! have a good day ahead..

8 0
3 years ago
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