Answer:
Josh was driving faster
Step-by-step explanation:
Josh was going faster becuase 320 divided by 4 is 80
and 225 divided by 3 is 75.
In conclusion Josh was going faster by 5mph.
Answer:
Y=7.05
X= 11.6
Step-by-step explanation:
Equate both equations to zero
3x+5y=70--------equation 1
7x-3y=60---------equation 2
From the equation above
a1=3, b1=5, c1=-70
a2=7, b2= -3, c2=-60
By applying the cross multiplication method
x/b1c2-b2c1= y/a2c1-a1c2= 1/a1b2-a2b1
x/(5)(-60)-(-3)(-70)=y/(7)(-70)-(3)(-60)=1/(3)(-3)-(7)(5)
x/-300-(-210)=y/-490-(-180)=1/-9(-35)
x/-510=y/-310=1/-44
x/-510=1/-44 , y/-310=1/-44
-44x=-510 , -44y= -310
x=11.6 , y=7.05
Thus, the value of x is 11.6 and the value of y is 7.05
Vertical angles are equivalent so
7x-4=87
and 4 to both sides to remove the negative numbers, the new equation is
7x=91
Then divide both sides by 7 and you get the answer
1x=13
Makes sense?
Answer:
A≈66.48
Step-by-step explanation:
Answer: 729 people are chosen in the sixth round.
Step-by-step explanation:
For a game, three people are chosen in the first round. Each of those people chooses three people in the second round. This means that the number of people chosen in the second round would be
3 + 3 + 3 = 9
This is 3²
If 9 people choose 3 people each in the third round, the total number of people chosen in the third round would be
3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 = 27
This is 3³
This means that the number of people chosen at each round is 3^n
Where n represents the number of round. Therefore,
In the 6th round, n = 6
Number of people chosen is
3^6 = 729