2x - 4y = 10
7x - 9y = 12
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9x - 5y = 2
So she has 6 less than her brother Joseph so to find out how many apples he has, you have to add 6 to 86 so, 86+6=92. So, Mrs. Newton has 86 apples, Joseph has 92 and now we have to find out how much Elisa has. Her friend elisa has 13 less than her so to find out how many she has you have to subtract 13 from 86. So, 86-13=73. To find out how many they have together, you have to add all three totals. So, 86+92+73=251. They had 251 apples all together
Answer:
A.) 0.9cm, 1.2cm, 1.5cm
Step-by-step explanation:
The side ratios of the offered answers are ...
A — 3:4:5 . . . . . . obviously a right triangle
B — 3:5:5 . . . . . . isosceles, but not a right triangle
C — 3:4:6 . . . . . . an obtuse triangle
D — 3:2:5 . . . . . . not even a triangle (just a line segment)
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<em>Comment on 3:4:5</em>
This set of small integers appears often in problems involving right triangles. It is the smallest "Pythagorean triple" — a set of integers that satisfies the relationship of the Pythagorean theorem — and it is the only Pythagorean triple that is an arithmetic sequence (differences between the numbers are the same).
When you see a triangle with sides in these ratios, you know it is a right triangle. When you see a right triangle with two of the sides having a ratio of 3:4, 3:5, or 4:5 (where "5" is the hypotenuse), then you know the length of the remaining side.