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maw [93]
4 years ago
15

A box has a volume of 135 feet3. The length is same as the height, and the width is 5 times the length. What are the dimensions

of the box?
A) 3 x 3 x 15
B) 3 x 5 x 9
C) 3 x 15 x 15
D) 9 x 9 x 27
Mathematics
2 answers:
yuradex [85]4 years ago
6 0
The answer is A:
3 x 3 x 15 = 135 feet cubed
kenny6666 [7]4 years ago
4 0

Answer:

A)

Step-by-step explanation:

Letting x be the length and height then the equation is 5x3 = 135; x = 3 so the dimensions are 3 x 3 x 15.

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Find the equation of the circle with a diameter whose end points are (-1,-2) and (-3,2)
Sergeeva-Olga [200]

Answer:

The equation of the circle with a diameter whose end points are (-1,-2) and (-3,2) is

x^{2} +y^{2}+4x-1=0

Step-by-step explanation:

<u>Explanation:</u>-

<u>Step 1:</u>-

The equation of the circle having center and radius is

(x-h)^2+(y-k)^2=r^2

here center is (h,k) and radius is r

Given diameter whose end points are (-1,-2) and (-3,2)

The diameter of the circle is passing through the center of the circle

so center of the circle = midpoint of two end points

      (\frac{-1 +(-3) }{2} ,\frac{-2+2 }{2}  )

    (-2,0)

therefore center (h,k) = (-2,0)

<u>Step 2:-</u>

we have to find the radius of the circle

the radius of the circle = the distance from center to the one end point

i.e., C P = r

Given one end point is P(-3,2) and center C(-2,0)

The distance formula of two points are

\sqrt{(x_{2}-x_{1} ) ^{2}+ (y_{2}-y_{1} ) ^{2}}

r=\sqrt{{(-3)-(-1) ) ^{2}+ (2-(-2)) ^{2}}

r=\sqrt{5}

<u>Step 3</u>:-

center (h,k) = (-2,0) and

radius r=\sqrt{5}

The standard form of circle equation

(x-h)^2+(y-k)^2=r^2

(x-(-2))^2+(y-0)^2=\sqrt{5} ^2

on simplification is

x^{2} +y^{2}+4 x-1=0

5 0
3 years ago
Someone help me with this please
vazorg [7]

Answer:

A

Step-by-step explanation:

A triangular prism has two rectangles on each side, then two triangles on the other sides. I hope this helps! :)

8 0
3 years ago
Part 2: How much toilet paper do you really need to be prepared for long-term
allochka39001 [22]

Answer:

4 rolls

Step-by-step explanation:

We can use logic to find how many rolls of toilet paper you would need.

If you use 10 sheets of toilet paper every time you use the toilet, and this happens 3 times a day, then each person per day uses 10\cdot 3 = 30 sheets of toilet paper per day.

For a 4 family household with 4 people, that would be 30 \cdot 4 =120 sheets every day for the whole family.

For a week (7 days) the whole family would use 120 \cdot 7 = 840 sheets per week.

If rolls of toilet paper are shipped by every 250 sheets, then we'd need 840 \div 250 = 3.36 rolls.

We can't have 0.36 of a roll, so we round up to 4 so we have enough.

Hope this helped!

4 0
4 years ago
Imagine that yourfriend missed the lesson on how to solve a system of equations using the substitution method. You want to help
Lana71 [14]
A system of equations is a collection of two or more equations with the same variables. When solving this system, u need to find the unknown variables. One way of solving a system of equations is by substitution. 

example :

2x + 2y = 6 (equation 1)
3x + y = 4 (equation 2)

we need to pick a variable and isolate it. The easiest one to pick since it is already by itself is the y in the second equation.
3x + y = 4.....subtract 3x from both sides
y = -3x + 4

now we can sub -3x + 4 in for y in the 1st equation...u have to make sure u sub it back into the 1st equation and not the same equation u used to find it.

2x + 2y = 6.....sub in -3x + 4 in for y and solve for x
2x + 2(-3x + 4) = 6...distribute thru the parenthesis
2x - 6x + 8 = 6...subtract 12 from both sides
2x - 6x = 6 - 8...simplify
-4x = -2...divide both sides by -4
x = -2/-4
x = 1/2

now that we have a numerical number for x, u can sub this back into either of ur equations to find a numerical answer for y.

y = -3x + 4...when x = 1/2
y = -3(1/2) + 4
y = -3/2 + 4
y = -3/2 + 8/2
y = 5/2

so ur solution is : (1/2,5/2) <===

and u can check ur answers by subbing them into ur equations to see if they satisfy both equations...because for it to be a solution to this system, it has to satisfy both equations and not just one of them
5 0
3 years ago
Algunos numerod irracionales tienen representacion decimal infinta y periodica .<br>​
ANTONII [103]

Answer:Se dice que cualquier número que no se pueda expresar como una razón de dos enteros es irracional. Su representación decimal no termina ni se repite infinitamente, sino que se extiende para siempre sin repetición regular. Ejemplos de números tan irracionales son la raíz cuadrada de 2 y π.

Step-by-step explanation:

3 0
3 years ago
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