There are 12 boys and 14 girls in a class. One of the students is selected at random to represent the class at student council.
1 answer:
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Answer:
Option (C)
Step-by-step explanation:
If AD is the altitude to BC, both the segments AD and BC will be perpendicular to each other.
By the property of perpendicular lines,
where is the slope of the line AD and
is the slope of BC.
Now from the given property,
Therefore, slope of altitude BC =
Option (C) will be the answer.
Answer:
The original number was 54.5.
Step-by-step explanation:
If a number is increased by 2.8%, then it is 102.8% of it's original number.
In mathematics, "of" in virtually all cases means "multiplied by".
Therefore, we do the opposite:
1. Convert to a decimal.
102.8% = 1.028
2. Divide by the decimal.
3. Round it to the nearest tenth.
54.47 rounds to 54.5.
Answer:
The total number of cubes in each shape will alternate between even and odd.
The length of each shape will alternate between even numbers and odd numbers
Step-by-step explanation:
I have drawn a picture of the cubes below.
The cubes for Step 1 are black.
Those added in Step 2 are pink.
Each step has cubes of a different colour.
The total number of cubes in each shape (Column 4 in the table) alternates between even and odd.
The length of each shape (Column 3 in the table) alternates between even and odd.
