Mathematics, 15.11.2020 08:10 Axe15x

Jana ran the first 3 1/2 miles of a 5-mile race in 1/3 hour. What was her average rate, in miles per hour, for the first part of the race?

Answers

Answer from: rachelsweeney10

Divide both sides by +t+

+r+=+d+%2F+t+

given:

+d+=+3+%2B+1%2F2+

+t+=+1%2F3+

Note that:

+%28+2d+%29+%2F+%28+2t+%29+=+d%2Ft+,

so, I can say:

+r+=+7+%2F+%28+2%2F3+%29+

Multiply the top and bottom of this fraction by +3+

+%28+3%2A7+%29+%2F+2+=+21%2F2+

+21%2F2+=+10+%2B+1%2F2+

The first part of the race was run at a rate of:

10 and 1/2 miles/hour

Step-by-step explanation:

Answer from: Quest

step-by-step explanation:

this is a subtraction problem.

10 - 2 = 8

Answer from: Quest

a28=58

step-by-step explanation:

a1=a1+(n-1)d

a28= 4+ (28-1)2

a28=4+(27)(2)

a28=4+54

a28=58

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 15:30, edgarnino13

Maria donates a fixed amount, a, to a charity each month. if she donates $300 in 12 months, what is the equation for a? a. a + 300 = 12 b. a × 300 = 12 c. a × 12 = 300 d. a + 12 = 300 e. a + 32 = 100

Answers: 3

continue

Mathematics, 21.06.2019 16:40, stodd9503

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4

Answers: 1

continue

Mathematics, 21.06.2019 19:30, emopandabogard8712

Find the coordinates of point x that lies along the directed line segment from y(-8, 8) to t(-15, -13) and partitions the segment in the ratio of 5: 2.

Answers: 1

continue

Mathematics, 21.06.2019 20:30, nininichole431

Me n o w. i need t h i s. 10 points

Answers: 1

continue

You know the right answer?

Jana ran the first 3 1/2 miles of a 5-mile race in 1/3 hour. What was her average rate, in miles per...