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slamgirl [31]
2 years ago
11

Brenda noticed that the reptile building at the zoo was located at the point (-3, 4) on the zoo map. Name the quadrant of the ma

p that the reptile building is in.
Mathematics
1 answer:
rodikova [14]2 years ago
4 0
It is located in quadrant 2
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You are planning to make an open rectangular box from a 25​-in.-by-49​-in. piece of cardboard by cutting congruent squares from
Darya [45]

Answer:

The dimensions of the box are 38.48 x 14.48 x 5.26 in.

Step-by-step explanation:

We will have a piece of cardboard with squares of side x cut from the corners to make a open box.

The volume of the box can be written as:

V=A\cdot B\cdot x\\\\V=(49-2x)\cdot (25-2x)\cdot x\\\\V=x\cdot (4x^2-2x*(49+25)+49*25)\\\\V=4x^3-148x^2+1225x

To calculate the maximum volume, we derive and equal to zero

dV/dx=12x^2-296x+1225=0

We apply the quadratic equation to know the roots of the equation

x=\frac{-b\pm\sqrt{b^24ac}}{2a}\\\\x=\frac{296\pm\sqrt{296^2-4*12*1225}}{2*12}  =\frac{296\pm\sqrt{87616-58800}}{24}= \frac{296\pm\sqrt{28816}}{24}\\\\x=\frac{296\pm169.75}{24}= 12.333\pm7.073\\\\\\x_1=12.333+7.073=19.406\\\\x_2=12.333-7.073=5.26

The first solution is physically impossible, as the side that is cut would be bigger than 25.

So the real solution is for x=5.26 in.

Then, the dimensions of the box are:

A=49-2x=49-2*5.26=49-10.52=38.48\\\\B=25-2x=25-10.52=14.48

8 0
3 years ago
a proportion relationship is represented by the equation 2x equals 18 y. If y equals kx where K is the constant of proportionali
Mkey [24]
18y=2x
y=1/9 *x
y=k*x
so k=1/9
5 0
3 years ago
Please help meeeeeeeeeeeeëeeeeeeeeeeeeeeeeèeeeeeeeeeeeeêeeeeeeeeeeeeęeeeeeeeeeeeeeeeeeeeeeeeeeeeéeeeeeeeeeeeeêeeeeeee
Anna007 [38]

Hello!

to find b, let's subtract the squares of the hypotenuse and leg a to find b. We will then find the square root of our answer.

169-144=25

√25=5

Therefore, b=5

I hope this helps!

8 0
3 years ago
Read 2 more answers
Simplify the ratio:<br> 18,750 : 216 =
aleksandr82 [10.1K]
The ratio to this problem is 750:216
5 0
2 years ago
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This afternoon, Sara noticed that the number of the page assigned for homework is divisible by both 12
max2010maxim [7]

Answer:

12

Step-by-step explanation:

Well, 12/12=1, which I guess is the smallest number we can get, and 12 is divisible by 2 too.

7 0
3 years ago
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