Answer:
Step-by-step explanation:
Answer:
They bought 5
Step-by-step explanation:
65x+40y=765
65(5)+40(11)=765
Let t represent Todd's age now.
.. 4(t -3) -(t -3) = 81 . . . . . . 3 years ago, their differnce in ages was 81.
.. 3t -9 = 81
.. t = (81 +9)/3 = 30
Todd is 30 now.
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You can also work this by considering "ratio units." 3 years ago, the ratio of their ages was 4:1, a difference of 3. That difference corresponds to 81 years, so each "ratio unit" represents 81/3 = 27 years. Todd's age then was 1 ratio unit, 27 years. Now, Todd's age is 30.
B. are parallel.
<span>Line m is drawn so that it is perpendicular to two distinct planes, Q and R. Therefore, planes Q and R are parallel.
Since it doesn't state that two planes intersect with each other, it is safe to assume that only line m is their connection. The planes are parallel with each other. </span>
1) (-4) + (-9) = -13
2) 5 + (-12) = -7
3) -6 + 5 = -1
4) -7 + 7 = 0
<span>5) -7 + 2 ___ 3 + (-9)
- 5 ____ - 6
</span>-7 + 2 > 3 + (-9)
6) <span>4 + (-8) ___ 6 + (-8) + (-6)
- 4 ____ - 8
</span><span>4 + (-8) > 6 + (-8) + (-6)
7) </span><span>$66
8) </span><span>-$12
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