Answer:
7.
green blocks represent n
and normale digits (plus green) are orange
Anne: 1 orange block and increasing 2 green blocks from 2 sides
Sanjay: one line of green and orange line plus 1
Robert: 2 times the amount of green blocks on both lines with 1 orange block on right path
9.
a.y = 6x
b.y = 2^x
c.y = x+10
10.
a. 2 green blocks and 2 orange blocks
c. 3 green blocks and 1 orangle blocks
b. 4 green blocks
d.2 green blocks and 1 orange block
Step-by-step explanation:
for 10, it doesn't really matter
Answer:
20.25 m²
Step-by-step explanation:
the area (A) and circumference (C) of a circle are calculated using the formulae
C = 2πr and A = πr² ( where r is the radius )
calculate the radius using the formula for circumference
2πr = 9π ( divide both sides by 2π )
r = = = 4.5, hence
A = π × 4.5² = 20.25π m²
Answer:
135
Step-by-step explanation:
in order to find the distributive property you multiply both numbers.
So for example, You just multiply 3 times 45 = 135
Answer:
The length of the pencils is 4.1 inches and for the crayons 1.5 inches
Step-by-step explanation:
We can solve by means of a 2x2 system of equations, we have to:
let "x" be the length of the pencils
let "y" be the length of the crayons
4 * x + 3 * y = 20.9
5 * x + 4 * y = 26.5 => x = (26.5 - 4 * y) / 5
Replacing:
4 * (26.5 - 4 * y) / 5 + 3 * y = 20.9
21.2 - 3.2 * y + 3 * y = 20.9
-0.2 * y = 20.9 - 21.2
y = -0.3 / -0.2
y = 1.5
now for x:
x = (26.5 - 4 * 1.5) / 5
x = 4.1
This means that the length of the pencils is 4.1 inches and for the crayons 1.5 inches
