(a) 95 = (x+7)*(x-7)
(b) 95 = (x+7)*(x-7)
Expand the brackets:
95 = x² -7x + 7x -49 = x² - 49
Subtract x² from both sides:
95-x² = -49
Subtract 95 from both sides:
-x²=-49-95
-x²= -144
Divide both sides by -1 to get rid of the negative numbers:
-x²/-1=-144/-1
x²=144
Take the square root of 144:
x = ± squareroot of 144
x = 12 or -12
x = 12 because you cannot have a negative age so Trina is 12 years old.
Answer:
266 tickets
Step-by-step explanation:
Ratio of adult tickets to child tickets is 4 : 3
So, if we think of these as "parts", there are 4 parts adult tickets and 3 parts child tickets.
In total there is:
4 + 3 = 7 parts
Now, given 152 adult tickets. If there are 4 parts of adult tickets, how much is each part worth?
152/4 = 38
Total amount of tickets is 7 of these "parts", so total number of tickets is:
38 * 7 = 266 tickets
Answer:
<h3>x = 2</h3>
Step-by-step explanation:
3x + 5 = 19 - 4x <em>subtract 5 from both sides</em>
3x = 14 - 4x <em>add 4x to both sides</em>
7x = 14 <em>divide both sides by 7</em>
x = 2
Answer:
14
Step-by-step explanation:
Distance between y2 = x + 8 and y1 = x - 6
y2 - y1 = (x + 8) - (x - 6) = 14
5.575 because you would need to add half of 0.05 which is 0.075
I think this right : )
