Answer:
a = 12
Step-by-step explanation:
Formula for calculating the slope of a line is expressed as;
m = ∆y/∆x
m = y2-y1/x2-x1
Given
m = 1/2
x1 = a
y1 = 14
x2 = 8
y2 = a
Required.
Value of a
Substitute the given parameters into the formula
1/2 = a-14/8-a
Cross multiply
1(8-a) = 2(a-14)
8-a = 2a-28
Collect like terms
-a-2a = -28-8
-3a = -36
a = -36/-3
a = 12
Hence the value of a is 12
Each drawing they are just adding another row to the right so for the 7th picture, there would be 28 dots. Another explanation is that they are just adding the same number of dots for each number it is. For example, for the 5th image, they added 5 dots to the previous image and so on.
Answer:
d
Step-by-step explanation:
Answer:
$13.75 should be your answer
Step-by-step explanation:
Note that 45 nickles = 45 x 5 = 225 cents
Note that 10 quarters = 10 x 25 = 250 cents
Note that 18 half-dollars = 18 x 50 = 900 cents.
225 cents = $2.25
250 cents = $2.50
900 cents = $9
Add
2.25 + 2.50 + 9 = 13.75
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Answer:
no picture
Step-by-step explanation:
