Step-by-step explanation:
(3x + 5y - 7r)/(z + t) = 9p
3x + 5y - 7r = 9p(z + t)
3x + 5y - 7r = 9pz + 9pt
3x = 9pz + 9pt - 5y + 7r
x = (9pz + 9pt -5y + 7r)/3
To solve this problem, all you have to do is set up a proportion, letting x represent Kenneth's average speed per hour.
184.25/3.35 = x/1
Now, we use cross products, or the multiplication of the numerator of one fraction times the denominator of another fraction, and setting them equal to one another.
3.35x=184.25
Finally, we divide both sides by 3.35, because it's the coefficient of x, and we are trying to get the variable x alone.
x=55
Therefore, Kenneth's average speed was 55 miles per hour.
Answer:
Step-by-step explanation:
BC|| ED so <B=<D, <C=<E so the triangles are similar
the opposite sides of the equal angles are proportional
CD/AE=BD/AD=BC/DE
She can buy 6 magazines and she needs 4 more dollars to buy another
The triangles are congruent due to SAS