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Verizon [17]
3 years ago
14

What value added to x^2+2x would complete the square?

Mathematics
1 answer:
svetlana [45]3 years ago
7 0
D is the only one which would make sense :)
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PLZ Help fast. It's Pre Calculus. This is the only day i get to spend time with my baby sister. please help fast. WILL MARK BRAI
Ivahew [28]
1) x³ + 2x² - x - 2                            2) 2x³ + 5x² - 8x - 20 = 0

x²(x + 2) - (x + 2)                                x²(2x + 5) - 4(2x + 5) = 0

(x + 2)(x² - 1)                                      (2x + 5)(x² - 4) = 0

(x + 2)(x - 1)(x + 1)                             x = -5/2, +-2

x = -2, 1, -1   << a is the answer.

hope that helps, God bless!
5 0
3 years ago
Read 2 more answers
In the country of United States of Heightlandia, the height measurements of ten-year-old children are approximately normally dis
aliya0001 [1]

(A)

P(<em>X</em> < 61.25) = P((<em>X</em> - 55.4)/4.1 < (61.25 - 55.4)/4.1)

… ≈ P(<em>Z</em> ≤ 0.1427)

… ≈ 0.5567

(B)

P(<em>X</em> > 46.5) = P((<em>X</em> - 55.4)/4.1 > (46.5 - 55.4)/4.1)

… ≈ P(<em>Z</em> > -2.1707)

… ≈ 1 - P(<em>Z</em> ≤ -2.1707)

… ≈ 0.9850

5 0
3 years ago
A shirt rack contains 5 striped shirts, 8 solid shirts, and 6 polka dot shirts. How many outcomes are there when choosing a shir
Svetradugi [14.3K]

Answer:19

Step-by-step explanation:

Because there is 5 stripped shirts +8 solid shirts +6 polka dot shirts=19 shirts in total.

6 0
2 years ago
Read 2 more answers
What is 10 times 2.50?
dolphi86 [110]
Twenty five dollars answeris

4 0
3 years ago
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The parent of a constant function is: a. f(x)=c. b. f(x)=cx. c. f(x)= x​
Sonja [21]

Answer:

For what value of the constant c is the function f continuous on (-infinity, infinity)?

f(x)

=cx2 + 8x    if x < 3

=x3 ? cx if x ? 3

Step-by-step explanation:

7 0
3 years ago
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