Answer:
7) C
8) B
9) C
Step-by-step explanation:
7) sqrt[(8-8)² + (-5-7)²] = 12 units
8) y = 4x
9) y = 6 - x
Answer:
d
Step-by-step explanation:
bc it is equal on both sides
Answer:
x= 13
Step-by-step explanation:
−4/9(18x − 36) = −88
we need to solve the equation for x
First we remove the fraction -4/9
Multiply by -9/4 on both sides
18x -36 = 198
Now add 36 on both sides
18x = 234
Divide both sides by 18
x = 13
If you multiply or divide both sides by a negative number it changes the direction of the inequality sign
Answer:
a) 49
b) 84
c) (B) -- always odd
Step-by-step explanation:
We observe that the number of square tiles is the square of the pattern number. The number of circular tiles is 1 more than the pattern number on each side of the square.
square tiles = n²
circular tiles = 4(n +1)
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<h3>a) </h3>
7² = 49 square tiles are needed for pattern number 7.
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<h3>b)</h3>
4(20+1) = 84 circular tiles are needed for pattern number 20.
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<h3>c) </h3>
The parity of the number of square tiles matches the parity of the pattern number. (The square of a number has the same parity as the number.) Since 4 is a factor in the number of circular tiles, its parity is always even. The parity of the total number of tiles will match the parity of the pattern number.
When the pattern number is odd, the total number of tiles will always be odd. (B)
