18*35 - number of the students at school.
x- is a number of classes if it is going to be 30 students per class, then
30x - number of the students at school.
So,
18*35 = 30x
x=(18*35)/30 = 21 classes should be if it is going to be 30 students per class.
21 - 18 = 3 new classes must be formed.
Answer:
45 degrees
Step-by-step explanation:
45 is half of 90, 90 is a right angle
Square root is this 4 and -4 are square roots to 16 because 4^2= 16
Answer:
Three-fourths a less-than-or-equal-to 15
Step-by-step explanation:
Hope this helps!
Answer:
20 feet
Step-by-step explanation:
Lance the alien is 5 feet tall. His shadow is 8 feet long. At the same time of day, a tree's shadow is 32 feet long. What is the height of the tree?
We solve this using proportion of
Height/ Shadow
= 5/8 = x/32
Cross Multiply
8x = 5 × 32
x = 5 × 32/8
x = 20 feet
The height of the tree is 20 feet