we know that
A quick way to estimate the sum of two numbers is to round each number and then add the rounded numbers
case a) We round the number to the nearest hundred
so
Round up is equal to
Round up is equal to
Find the estimate sum
case b) We round the number to the nearest tens
so
Round up is equal to
Round down is equal to
Find the estimate sum
Answer:
The numbers of boys in one grade are 60 .
Step-by-step explanation:
As given
In one grade of 150 students .
The ratio of boys to girls is 2:3.
Let us assume that the scalar multiple of boys and girls be x.
Thus number of boys = 2x
Number of girls = 3x
Than the equations becomes
2x + 3x = 150
5x = 150
x = 30
Thus number of boys = 2 × 30
= 60
Therefore the numbers of boys in one grade are 60 .
WILL GIVE THE BRAINLEST!!!
Answer:
5.) Proportionality is 3/1 or 3 simplified
6.) Proportionality is 1/6
Step-by-step explanation:
You would take the first column (or in this case row (pens and packs) and place the 2nd row under it in fraction form.
That would be your proportion
Then you would (in place of numbers) use letters to symbolize in the equation
Then create an equation to figure out how to get the correct numbers.
20 m
18.8 m
What is the area
Answer:
5715.2 cubic metres
Step-by-step explanation:
I'm assuming that by area you mean volume. If you just take 15.2 x 20 x 18.8 you find the volume, 5715.2 cubic metres.
Answer: 15.2 x 20 x 18.8 = 57, 152 m
Step-by-step explanation: Just multiply all numbers
B. 125 square inches
C. 240 square inches
D. 340 square inches
Answer:
The correct option is D
D) 340 inch²
Step-by-step explanation:
The base of the pyramid is a square with side 10 inch
Area of square base = Length · Width = 10 · 10
Area of square base = 100 inch²
Height of triangle = 12 inches
Base of triangle = 10 inches
Area of triangle = (1/2)(Height)(Base) = (1/2)(12)(10)
Area of triangle = 60 inch²
Total number of triangles in a pyramid = 4
Total Area of 4 triangles = 4 · 60 inch²
Total Area of 4 triangles = 240 inch²
Surface Area = Area of 4 triangle + Area of the square base
Surface Area = 240 inch² + 100 inch²
Surface Area = 340 inch²
Answer:
The Answer would be D
Step-by-step explanation:
This Answer would also apply to E2020 test/exam