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Yuliya22 [10]
2 years ago
9

Reduce -34/87 to lowest terms.

Mathematics
2 answers:
sattari [20]2 years ago
8 0
It is already reduced.
They don't have a common factor to reduce them by.
scoray [572]2 years ago
3 0

I think it is already reduced.

How you a doin?

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Find the area of the composite shape below.
arlik [135]

Answer: 1106.13 (2 decimal places)

Step-by-step explanation:

To work out the area of this composite shape you would have to put the two semi circles together to form a circle and work out the area of the circle (they have provided the radius which is 11in), then work out the area of the rectangle separately.

The formula for the area of a circle is πr^2 (pi x radius squared).

So when you put the numbers in the formula the area is πx11^2=380.1327111

Then to work out the area of the rectangle you would do base x height.

The height of the rectangle is the same as the diameter of the circle (the diameter is double the radius of a circle) which is 22in.

To find the area of the rectangle you do 22x33=726

So then to find the area of the whole shape you would have to add the area of the circle and the rectangle together.

726+380.1327111=1106.13 (2 decimal places).

3 0
2 years ago
hi:) I’m not sure if this is correct. For the justifying part , must I still use the discriminant or can I just say that since t
labwork [276]

You did it right (almost, I got 21 instead of 19) but didn't finish.  You need to show your discriminant is never negative.

x² + (p+1)x = 5-2p

x² + (p+1)x +(2p-5) =0

Real roots mean a positive (or at least non-negative) discriminant:

D = b² - 4ac = (p+1)² - 4(1)(2p - 5) = p² + 2p + 1 - 8p + 20

D =  p² - 6p + 21

It's not totally obvious that D>0; we prove that by completing the square by noting

(p-3)² = p² - 6p + 9

so

p² - 6p = (p-3)² - 9.

D =  p² - 6p + 21

D =  (p-3)² - 9 + 21

D = (p-3)² + 12

Now we clearly see D>0 always because the squared term can't be negative, so D is always at least 12.   We always get two distinct real roots.

3 0
3 years ago
What is 3 and 3/4 times 2 and 2/5.please explain process
love history [14]
What you do is turn them in to improper fractions 
you will have 15/4 times 12/5 then multiply 
you would get 180/20 and you simplify it to get
9/1 witch = 9 
5 0
3 years ago
PLZ HELP ME!!!!!!!!!!!!!
topjm [15]
It is answer #1 the depandent variable is distance, y=25x, the dragonfly will travel 600 miles
8 0
2 years ago
2x=2y-6 & y= -x-1 determine amount of solutions
jek_recluse [69]

do I have to??????????

4 0
3 years ago
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