Answer:
rearrange them properly to get
x-y=7
-3x+y=12
( by elimination method)
x-y = 7
-3x+y=
(x+ –3x) + (–y+y) = (7+12)
-2x+0= 19
x= -9.5
from eqn(i)
x-y=7
-9.5 - y=7
-y=16.5
y= -16.5
The total loss is 84 loss (-84).
Answer:
LSA of a cube = 100 in²
Explanation:
Let the area of the cube be a.
Given the following data;
a = 5 in²
To find the lateral surface area;
We know that a cube has four faces and as such the lateral surface area would be the area of the four faces.
Lateral surface area (LSA) of a cube = 4a²
Substituting into the equation, we have;
LSA of a cube = 4*5²
LSA of a cube = 4*25
LSA of a cube = 100 in²
Therefore, the lateral surface area of the package is 100 square inches.
THe Left one
Answer:
The heigh of the triangle is 10cm
Step-by-step explanation:
The area of a triangle is given by the formula A=1/2bh where
A = the area of the triangle,
b = the length of the base, and
h = the height of the triangle.
To find the height when
the
Area of the triangle, A =45cm2,
base of the triangle, = 9 cm long.
Using the formula, A = 1/2 × b × h
45 = 1/2 × 9 × h
Cross multiplying
2×45 = 1×9×h
90 = 9h
h = 90/9 = 10cm
