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grigory [225]
2 years ago
14

Kim is reading a book with 380 pages. She read 20 pages each day until she reached Part 2 of the book. Part 2 of the book is 160

pages long. She uses the equation 380−20=160 380 - 20 d = 160 to represent the number of days, d, it took her to read Part 1. How many days did it take Kim to read Part 1 of the book?
Mathematics
1 answer:
o-na [289]2 years ago
5 0

Answer:

11 days

Step-by-step explanation:

380-160=220

20 times 11 =220

answer 11 days

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You and a friend start riding bikes toward
Setler [38]

Answer:

1.5 hours

I traveled farther

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Step-by-step explanation:

\text{Speed}=\dfrac{\text{Distance}}{\text{Time}}

My speed

\dfrac{2\dfrac{1}{6}}{\dfrac{1}{4}}=\dfrac{\dfrac{13}{6}}{\dfrac{1}{4}}=\dfrac{26}{3}\ \text{mph}

Speed of my friend

7\dfrac{1}{3}=\dfrac{22}{3}\ \text{mph}

Time passed for both me and my friend will be equal if we start at the same time and the combined distance covered by both of us will be 24 miles. Let t be the time taken to meet

\text{Distance}=\text{Speed}\times\text{Time}

\dfrac{26}{3}t+\dfrac{22}{3}t=24\\\Rightarrow \dfrac{48}{3}t=24\\\Rightarrow 16t=24\\\Rightarrow t=\dfrac{24}{16}\\\Rightarrow t=1.5\ \text{hours}

So, we meet each other after 1.5 hours.

Distance traveled by me

\dfrac{26}{3}\times 1.5=13\ \text{miles}

Distance traveled by my friend

\dfrac{22}{3}\times 1.5=11\ \text{miles}

So, I traveled farther by 13-11=2\ \text{miles}.

7 0
2 years ago
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Allushta [10]

Answer:

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6 0
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svetoff [14.1K]

Answer:

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Step-by-step explanation:

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Use the quadratic equation to solve for x.

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Now solve for y using these two values of x by substituting it back into the equations.

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7 0
3 years ago
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Illusion [34]

Answer:

False

Step-by-step explanation:

Sorry if I’m wrong I tried my best

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