Answer:
60
Step-by-step explanation:
I divided 36 by 3 got 12 then mutiplyed 12 by 5
I’m pretty sure it’s 1.99
Answer:
Y =-25x +225
Step-by-step explanation:
First you can count the gradient first. Use then you can count y intercept
Base = 15
Height = 38
You can get this by setting the base equal to x and the height equal to 2x + 8. Then multiply together and set equal to 285. To solve, solve for 0 and then use the quadratic formula. You'll get two answers, but the negative one is an extraneous solution.
Answer: his speed when skateboarding is 6 mph and when walking is 3 mph
Step-by-step explanation:
Let x represent Marlon's walking speed.
Marlins speed on his skateboard is 2 times his walking speed. This means that his skating speed would be 2x.
At 1:30 Marlon left his house to go to the beach a distance of 6.75 mi. He rode his skateboard until 2:15. This means that the total time he spent skating is 45 minutes = 45/60 = 0.75 hours
Distance = speed × time
Distance covered while skating would be
2x × 0.75 = 1.5x
He walked the rest of the way. He arrived at the beach at 3:00. This means that the time that he spent walking is 45 minutes = 0.75 hours.
Distance covered while walking would be
x × 0.75 = 0.75x
Total distance covered is 6.75 miles. Therefore
1.5x + 0.75x = 6.75
2.25x = 6.75
x = 6.75/2.25
x = 3 miles per hour
His skating speed = 2 × 3 = 6 miles per hour.