Answer:
They spent $63 and 12 hours each
Step-by-step explanation:
Given
<em>Represent hour with h</em>
For Brian;
For Latrell
Required
Find h and amount
Since, they spent the same amount
Collect Like Terms
Substitute 12 for h in
(3a+2.5b)^2=9a^2+6.25b^2+* Please help before Thursday
1 answer:
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Answer: x = 120
Step-by-step explanation:
Here we have 3 triangles, one big and two smaller ones, one at the left and other at the right.
Now, the right sides is shared by the right smaller triangle and the big triangle, if this length is Z, we have that (using the angle in top of it, A, such that 64 is adjacent to A.)
Cos(A) = 64/Z
Cos(A) = Z/(64 +225)
We can take the quotient of those two equations and get:
Then:
Z = √(18,496) = 136.
now, we have that for the smaller triangle one cathetus is equal to 64 and the hypotenuse is equal to 136.
Then, using the Pythagorean theorem:
64^2 + x^2 = 136^2
x = √(136^2 - 64^2) = 120