Answer:
The answer is below
Step-by-step explanation:
9) The area of the platform = length * width = 9 m * 12 m = 108 m²
Area = 108 m²
11) 1 km² = 1 km × 1 km = 1000 m × 1000 m = 1000000 m²
But 1 hectare = 10000 m², hence:
1000000 m² = 1000000 m² / 10000 m² per hectare = 100 hectares
1 km² = 100 hectares
12) Area of each paper = 16 cm * 12 cm = 192 cm²
There are 48 sheets, hence:
Total area of sheets = 192 cm² * 48 = 9216 cm²
13) Area of each tile = 12 cm * 10 cm = 120 cm²
The kitchen contains 500 tiles, therefore:
Area of kitchen = 120 cm² * 500 tiles = 60000 cm²
1 m² = 10000 cm²
60000 cm² = 60000 cm² / 10000 cm² per m² = 6 m²
Area of kitchen = 6 m²
Answer:
- 21 hours in May, 63 hours in June
Step-by-step explanation:
<h3>Set up equations</h3>
<h3>Solve by substitution, fin the value of j</h3>
- 1/3j + j = 84
- 4/3j = 84
- j = 84*3/4
- j = 63
<h3>Find m</h3>
- m + 63 = 84
- m = 84 - 63
- m = 21
Answer:
Formation of Elements: Protons + Neutrons combine to form the nucleus of an atom (basic unit of matter), electrons (- charge) orbit nucleus attracted to protons (+ charge)
Answer:
(8,-1)
Step-by-step explanation:
Given :
To Find: solution of given system of equations.
Solution:
Equation a :
Equation b :
Substitute the value of y from equation b in equation a
y from equation b : y = 7-x
Now substitute value of y in equation a
Thus equation a becomes:
⇒ x= -1 and x = 8
Now substitute values of x in equation b to obtains values of y
⇒
for x = -1
⇒
⇒
⇒
Thus (x,y)=(-1,8)
For x =8
⇒
⇒
⇒
Thus (x,y)=(8,-1)
Hence Option A is the correct solution .