Answer:
3, 12
Step-by-step explanation:
"x" is the larger number,
"y" is the smaller number.
Given
x + y = 15
x / y = 4
manipulate the equations for the problem
x / y = 4
*y *y
x = 4y
solve the system of equations by the methord of substitution:
x + y =15
4y + y = 15
5y = 15
y = 3
Subsitute back into the equations given.
x = 4y
x = 12
Answer:
y intercept: -2
Step-by-step explanation:
hope this helps :)
Answer:
2520cm²
Step-by-step explanation:
Surface area = sum of the area of all the bases.
Area of bottom base = 28 * 30 = 840
Area of right base = 25 * 30 = 750
Area of left base = 17 * 30 = 510
Area of two triangles = ( 15 * 28 ) / 2 = 210 * 2 = 420
Then add all the areas together to find surface area
Surface area = 840 + 750 + 510 + 420 = 2520cm²
Relevant Formulas:
Area of a rectangle = length * width. This formula was used to find the area of the bottom base, the right base and the left base
Area of a triangle = ( height * base length ) / 2 . This formula was used to find the area of the sides which are triangles.
Answer: One face is 16 square centimeters.
Step-by-step explanation: To find the area of a face, you need to know the length of the side. All the sides of the cube are the same, so take the cube root of 64.
![\sqrt[3]{64}=4](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B64%7D%3D4)
cm is the length of the side
The area of one face is the side length squared 4² = 16
4cm × 4cm = 16 square centimeters.
Answer:
Step-by-step explanation:
To answer this question, you should cut this cube and see these two square faces that these lines are drawed as I show on the upload...
These lines represents a 45º of angle and the sum of them is 90º.
