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insens350 [35]
3 years ago
9

If using the method of completing the square to solve the quadratic equation

Mathematics
1 answer:
meriva3 years ago
3 0

Answer:

The number to add is (11/2)^2 = 121/4

Step-by-step explanation:

Here, we want to know the number that will complete the square

We rewrite the equation as follows;

x^2 + 11x = -30

x^2 + 11x + (11/2)^2 = -30 + (11/2)^2

x^2 + 11x + 121/4 = -30 + 121/4

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Grace had $51 when she browsed an on-line store, which sells a pair of green earrings for $9.00 each plus a one-time $6.00 shipp
vitfil [10]

Answer:

5 Green earrings

Step-by-step explanation:

Given that:

Total amount held = $51

Cost per pair of green earrings = $9

One time shipping fee = $6

How many pairs of green earrings did grace purchase?

Let the number of green earrings purchased = g

Then,

$9*g + $6 = $51

$9g + $6 = $51

$9g = $51 - $6

$9g = $45

g = $45 / $9

g = 5

Hence, the number of green earrings purchased = 5

4 0
3 years ago
PLEASE ANSWER
mestny [16]
-4 - 1/3=-4.33333333333<span>

-4 - -1=-3

1/3 - 2=</span>-1.66666666667<span>

1/3 - 3 1/2=</span>-3.16666666667<span>

2 - 3 1/2=</span>-1.5<span>

-1 - 3 1/2=</span><span>-4.5</span>
3 0
3 years ago
Read 2 more answers
1/3 + a = 5/4<br> A=? ..........................................................
NARA [144]
11/12 I’m pretty sure
3 0
2 years ago
WILL GIVE BRAINLESS IF SOLVED!!!! reply
sweet-ann [11.9K]
2 BBC’s if that’s what the council agrees as fair punishment for lying cheating and spreading evil i just want to die
5 0
2 years ago
Make a ten or a hundred to add mentally 339+123
lianna [129]
9+3=12
30+20=50
300+100=400
Then add.
12+50+400=462
<span>So 339+123=462</span>
5 0
3 years ago
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