Answer:
128 he has 16 ballones left over
Step-by-step explanation:
divide 1027 by 8 then divied what you get by 1027
Answer:
a. 40 ft²
b. 21 ft²
c. 61 ft²
Step-by-step explanation:
Rectangle area formula: l * w
Triangle area formula: 1/2(bh)
10 * 4
40 ft² for the rectangle
1/2(7 * 6)
1/2(42)
21 ft² for the triangle
40 + 21
61 ft² in total (both the rectangle & the triangle)
Answer:
30
Step-by-step explanation:
Permutation equation:
n = Total number of objects, r = Number of objects selected
Answer: Substitution
Step-by-step explanation:
GIVEN:
y=3x
2x+4y=12
Then, 2x+4(3x)=12
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Substitution: replacing one variable in terms of another variable.
As we can see from the given aspects, y=3x, and the conclusion expression has no y instead of 3x. This means it represented y in terms of x, which fits the definition of substitution that replaces one variable.
Hope this helps!! :)
Answer:
an = a1 + (n-1)*d
a20 = -108
Step-by-step explanation:
For the arithmetic sequence
a1 = -13, d = -5
a2 = a1 +d (where d is the ratio of the sequence)
a2 = -13 -5
a2 = -18
a3 = a2 + d
But a2 = a1 + r
a3 = a1 + 2r = -13 + 2(-5) = -23
So: an = a1 + (n-1)*d
a20 = -13 + 19*(-5)
a20 = -108