Answer:
7 times
Step-by-step explanation:
Answer:
The dimensions of the rectangle are two unknowns: The length "l" and the width "w"
The perimeter of a rectangle is found as P = 2*l + 2*w
We also know that the length is 5cm more than twice the width. l = 2*w + 5
These two equations gives us a system of linear equations.
P = 2*l + 2*w
l = 2*w + 5
We can use substitution to replace the "l" in the first equation with 2*w + 5
P = 2*(2*w + 5) + 2*w
P = 4*w + 10 + 2*w
P = 6*w + 10
We know that P = 34cm
34 = 6*w + 10
Subtract 10 from both sides
24 = 6 * w
Divide both sides by 6
4 = w
Now that we know the width, we can find the length by substituting 4 for "w" in the second equation.
l = 2*4 + 5
l = 8 + 5
l = 13
The dimensions of the rectangle is 13cm x 4cm
She hiked 6.5 miles in total and it basically tells you she hiked 1.75 miles and 2.4 miles in the morning which equals 4.15 miles in the morning. to find how many miles she walked in the afternoon you just subtract the morning miles 4.15 from the total miles 6.5
6.5-4.15=2.35
then to find how many more miles she walked in the morning you just subtract the morning from the afternoon
4.15-2.35=1.8 miles
she hiked 1.8 more miles in the morning
D is the answer.. hope u didn’t stress yourself out with that question
