Answer:
the answer is 1
Step-by-step explanation:
Combined speed of the cars = x + x + 14 ( where x is rate of slowest car)
speed =distance / time so
2x + 14 = 950 / 5 = 190
2x + 14 = 190
2x = 176
x = 88 kph answer
The answer is 987
9 + 8 +7 = 24
nearest 100 is 1000
nearest 10 is 90
so 987
Answer:
9 burritos and 18 tacos
Step-by-step explanation:
<u>We can start this problem by assigning a variable to our unknowns.</u>
Let's name x the number of burritos he buys.
The question states he buys half as many burritos as tacos.
Therefore, the number of tacos he bought is 2x.
<u>Let's set up an equation.</u>
(Cost of burrito)(number of burritos)+(Cost of taco)(number of tacos)=Total Cost
2.19x+1.29(2x)=42.93
<u>Simplify</u>
2.19x+2.58x=42.93
4.77x=42.93
x=9
Michael bought 9 burritos.
2*9=18
Michael bought 18 tacos.
Let's simpifuy the answer they gave us:
![\begin{gathered} x=\frac{-8\pm\sqrt{160}}{4} \\ x=\frac{-8\pm\sqrt{16*10}}{4} \\ x=\frac{-8\pm4\sqrt{10}}{4} \\ x=-2\pm\sqrt{10} \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20x%3D%5Cfrac%7B-8%5Cpm%5Csqrt%7B160%7D%7D%7B4%7D%20%5C%5C%20x%3D%5Cfrac%7B-8%5Cpm%5Csqrt%7B16%2A10%7D%7D%7B4%7D%20%5C%5C%20x%3D%5Cfrac%7B-8%5Cpm4%5Csqrt%7B10%7D%7D%7B4%7D%20%5C%5C%20x%3D-2%5Cpm%5Csqrt%7B10%7D%20%5Cend%7Bgathered%7D)
Answer letter C