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Alex73 [517]
2 years ago
10

Xy=22 as a proportion please! :)

Mathematics
2 answers:
omeli [17]2 years ago
8 0
X = 22y-1 they where right
Elina [12.6K]2 years ago
5 0
I’m sorry if I’m wrong but I do think your answer is X=22y^-1
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Please answer correctly !!!!!!!!!!!!! Will mark Brianliest pleaseeeee !!!!!!
Dimas [21]

Answer:

2sqrt(10)

Step-by-step explanation:

Use the Pythagorean theorem.

x^2 + 3^2 = 7^2

x^2 + 9 = 49

x^2 = 40

x = sqrt(40)

x = 2sqrt(10)

7 0
3 years ago
What is the maximum volume in cubic inches of an open box to be made from a 12-inch by 16-inch piece of cardboard by cutting out
Romashka-Z-Leto [24]

If you start with a 12x16 rectangle and cut square with side length x, when you bend the sides you'll have an inner rectangle with sides 12-2x and 16-2x, and a height of x.

So, the volume will be given by the product of the dimensions, i.e.

(12-2x)(16-2x)x = 4x^3-56x^2+192x

The derivative of this function is

12x^2-112x+192

and it equals zero if and only if

12x^2-112x+192=0 \iff x = \dfrac{14\pm 2\sqrt{13}}{3}

If we evaluate the volume function at these points, we have

f\left(\dfrac{14-2\sqrt{13}}{3}\right) = \dfrac{64}{27}(35+13\sqrt{13})> f\left(\dfrac{14-2\sqrt{13}}{3}\right) = -\dfrac{64}{27}(13\sqrt{13}-35)

So, the maximum volume is given if you cut a square with side length

x=\dfrac{14-2\sqrt{13}}{3}\approx 2.7

5 0
3 years ago
7 apples cost 4.55 dollars how much do 9 apples cost
Lubov Fominskaja [6]
To calculate how much 9 apples cost, you must multiply 9 to 4.55 and then divide by 7. This is done by setting up a proportion.
7 0
3 years ago
HELP ASAP!!!!!!!!!
masha68 [24]

Answer:

Step-by-step explanation:

23550=15000(1+.0475t)

t=12

6 0
3 years ago
A coin is tossed 50 times, and it lands on heads 28 times. Find the experimental probability and the theoretical probability of
alex41 [277]
The expirmental probability us 28/50
Theoreticaly the probability is 25/50 because that would be half :)
7 0
3 years ago
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