Part A:
As we can see on this table, Darla run 3 miles the first week. Then she began running 1.5 miles each week (4.5 - 3 = 1.5; 6 - 4.5 = 1.5; etc...). Let x be the number of weeks. But since the first week is different from the others, we need to remove 1 from x.
The equation is: 1.5(x-1) + 3
Part B:
To know how much she can run in 14 weeks, we replace x by 14 in the previous equation.
1.5x + 3 = 1.5 * 14-1 + 3 = 1.5*13 + 3 = 22.5
So no, she can't run 26.2 miles in 14 weeks.
Answer:
x=9
Step-by-step explanation:
we can start by using the distributive property
so then
2x+20=6x-16
we now need to move the variables to one side and the numbers to the other
-4x=-36
x=9
x= -4
Step-by-step explanation:
Answer:
Step-by-step explanation:
Corresponding sides of these triangles are proportional, so you have ...
x/5 = 20/x
x² = 5·20 . . . . . . . cross multiply
x = √100 = 10
and ...
y/15 = 5/y
y² = 15·5 . . . . . . cross multiply
y = √75 ≈ 8.7
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For more on the subject, see ...
brainly.com/question/26276659
Answer:
Step-by-step explanation:
what?
