Answer:
21
Solution:
90 degrees + 15 degrees = 105 degrees. This angle is complementary to 5x. Therefore 105=5x. Solving for x we get 21
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Step-by-step explanation:Step-by-step explanation:
For Sienna to be able to take the square root of both sides while solving a quadratic equation, she must have an expression with square on at least, the side that contains the variable she is trying to determine. Equation of the form:
(x + a) ² = b
'a' and 'b' could be any number, -1, 0, 1/3, -5/6, anything really.
So, she can take square roots of both sides then, like this
√(x + a)² = √b
x + a = ±√b
x = -a ± √b
Square roots always cancel out squares, and the '±' is because a square is satisfies by both + and -, 3² = 9, and (-3)² = 9.
It is the nature of the problem being solved that determines if we take just one or both of these answers.
Answer:
Step-by-step explanation:
the cyclist traveled 140 miles, each day, for 8 hours
in a day he traveled 140/8=17.5 miles per hour
Answer:
is the fraction of sensors upgraded per unit.
Step-by-step explanation:
We are given the following in the question:
Let x be the number of upgraded sensors in one unit and y be the number of non-upgraded sensors in one unit.
Number of modular units = 30
Since some part of unit is upgraded and some are non-upgraded, then, we can write the equation:
Number of non-upgraded sensors =
Thus, we can write the equation:
Fraction of sensors upgraded per unit =
I got 7x+4 because you distribute then add the X's and the whole numbers together.
