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n200080 [17]
3 years ago
8

4x^2+4x+1=9 what are all the solutions? Thanks

Mathematics
1 answer:
ziro4ka [17]3 years ago
8 0
4x^2+4x-8=0
X^2+x-2=0
(X+2)(x-1)=0
X= -2 or 1
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What.is the y intercept of a line given by the equation y=5×-21?
Delicious77 [7]

Answer:

-21

Step-by-step explanation:

If the equation of the line is

y=mx+b,

then m is the slope of the line and b is the y-intercept of the line.

In your case, the equation of the line is y=5x-21.

So, the slope of this line is m=5 and the y-intercept is b=-21.

4 0
3 years ago
Which two hundred thousands is 391,360 between?
zhenek [66]

Hi!

<h3>Hundred thousands are </h3>
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<h3>Where is 391,360 on this? </h3>
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<h2>The answer is 300,000 and 400,000. </h2>

Hope this helps! :)

-Peredhel


6 0
3 years ago
VHelena has five different flowers. She plans to give one flower to each of her five teachers in any order. She gives the first
vitfil [10]

24

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3 years ago
For which distributions is the median the best measure of center?
frutty [35]

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6 0
3 years ago
Read 2 more answers
Kelly needs to order lunch for orders 6 people at a business meeting. Her menu choices are chicken salad for a cost of $5 per pe
nirvana33 [79]
Ok , with that information we can write the equations
x + y = 6
5x + 4y = 28

Where x = how many people ordered chicken
and y = how many people ordered egg salad

Through elimination , we can set one of the variables in both equations equal so we can eliminate it :

(4)x + (4)y = (4)6
5x + 4y = 28

4x + 4y = 24. equation 1
5x + 4y = 28. equation 2

Now we can subtract the second equation by the first equation and isolate one variable:
equation 2 - equation 1

5x - 4x + 4y - 4y = 28 - 24

x = 4

Now that we discovered our x value ( How many people ordered chicken salad ) , we can apply it to one of the equations and discover y ( how many people ordered egg salad)

x + y = 6
x= 4
4 + y = 6

We can shift 4 to the other side of the equation by subtracting 4 from both sides of the equation:
4 - 4 + y = 6 - 4
y = 2

x=4 and y=2

So the awnser is :
4 people ordered chicken salad and 2 people ordered egg salad!

I hope you understood my brief explanation!!

p.s if you want to know how to use another method to solve these problems ( Substition) , just let me know in a comentary down here
5 0
3 years ago
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