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3 years ago

8

Rebecca ran 21 miles in 5 hours. If she ran at a constant speed, how many miles did she run in 2 hours? 8.4 miles 42 miles 4.2 m

iles 1.2 miles

1 answer:

Sholpan [36]3 years ago

6 0

Answer: 8.4 miles

Step-by-step explanation:

d = rt

Solve for her rate

21 = 5r

r = 21/5

r = 4.2

Solve for if the time is 2 hours and rate (solved previously) is 4.2

d = 4.2*2

d = 8.4

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Answer:

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General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Distributive Property

<u>Algebra I</u>

Terms/Coefficients/Degrees

Step-by-step explanation:

<u>Step 1: Define</u>

<u /> $\displaystyle \frac{1}{6}(30x + 24) - \frac{1}{7}(63 - 7x)$ <u />

<u />

<u>Step 2: Simplify</u>

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