Answer:
what is the figure
Step-by-step explanation:
For the second example, x should be 25, not 80.
9514 1404 393
Answer:
8 square units
Step-by-step explanation:
The base of the triangle, CD, is 4 times the length of the diagonal of a grid square, so is 4√2. The height of the triangle, EF, is 2 times the length of the diagonal of a grid square, so is 2√2. The area is ...
A = (1/2)bh
A = (1/2)(4√2)(2√2) = 8 . . . . square units
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In case you don't know it already, the diagonal of a unit square can be found from the Pythagorean theorem:
d² = 1² + 1²
d = √2
10 units earn a profit of 5 in 2 months
that means
1 unit earns a profit of 0.5 in 2 months
that means
1 unit earns a profit of 0.25 in 1 month
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8 units earn a profit 8*0.25=2 in 1 month
8 units earn a profit of 3*2=6 in 3 months
Answer:
yes
Step-by-step explanation:
75000 is a 5-digit number, as are all the numbers up to 75000. 5 digits are sufficient to assign each student a unique number.
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<em>Comment on the answer</em>
Usually, at least one check digit would be used to guard against errors such as transposition of digits. Many school districts have a lifetime longer than 10 years, so it seems likely the number of students in 50 years (for example) will exceed the 100,000 students that can be given 5-digit numbers. A 7-digit numbering scheme seems more appropriate, or a scheme that uses a combination of digits and letters.
