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zhuklara [117]
3 years ago
11

How do I figure out x in a quadratic equation?

Mathematics
1 answer:
Effectus [21]3 years ago
4 0
You factorize the <span>quadratic equation</span>
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A 39 inch piece of steel cut into 3 pieces so that the second piece is twice as long as the first piece and the third piece is t
dalvyx [7]

The length of the first piece is 4 the second piece is 8 and the third piece is 27.  Your Welcome

4 0
3 years ago
There are two sizes of red and blue marbles in a box. If the big marbles in the box, 45 are red and 3/4 are blue. The fraction o
Nat2105 [25]
Let
x------> amount of <span> big marbles in the box
y------> </span>amount of  small marbles in the box
R----> amount of  small marbles that are red in the box
B----> amount of  small marbles that are blue in the box

we know that
x=45+(3/4)*x----> x-(3/4)*x=45----> x/4=45-----> x=180

R+B=y-----> equation 1
R=(2/5)*y---> equation 2
B=(3/5)*y---> equation 3
B=R+24----> equation 4

substitute equation 2 in equation 1
[(2/5)*y]+B=y----> equation 5

substitute equation 2 in equation 4
B=[(2/5)*y]+24----> equation 6

resolve the system
[(2/5)*y]+B=y---> multiply by 5----> 2y+5B=5y----> 3y=5B
B=[(2/5)*y]+24----> multiply by 5----> 5B=2y+120

using a graph tool
see the attached figure

the solution is
B=72
y=120
R=y-B----> R=48

total marbies=x+y-----> 180+120-----> 300
tota; big marbies=180
<span>percent of the marbles are big marbles
</span>if 100%-----------> 300
 X----------------> 180
x=180*100/300-----> x=60%

the answer is
60%

8 0
3 years ago
How many pickles grow on a tree a year
andrezito [222]

Answer:

50-65 days

Step-by-step explanation:

50-65 days

Pickling cucumbers should be ready to harvest between 50-65 days from planting and can be picked over the course of a several weeks. Growing pickling cucumber plants is just like growing other types of cucumber. They prefer a soil pH of 5.5, well-drained soil, and lots of nitrogen.

5 0
3 years ago
If you Decrease £200 by 12.5% what do you get?
laila [671]

Answer:

175

Step-by-step explanation:

Find how much is left by multiplying 200 by 0.875, since this will give you the remaining 87.5%:

200(0.875)

= 175

So, the answer is 175.

8 0
2 years ago
What's 2x to the third
Tamiku [17]

Answer:

8x^3

Step-by-step explanation:

(2x)^3

=(2x)^3

=2x*2x*2x

=8x^3

8 0
3 years ago
Read 2 more answers
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