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nirvana33 [79]
2 years ago
6

Point A is located at (-3, 9) and point B is located at (12,-10). Find the distance from point A to point B rounded to the neare

st tenth
Mathematics
1 answer:
Nezavi [6.7K]2 years ago
7 0

Answer:

20

Step-by-step explanation:

\sqrt{(( - 10) - 9)^{2}  + (12 - ( - 3)) ^{2} }

\sqrt{( - 19)^{2}  + (15)^{2} }

\sqrt{361 + 225}

\sqrt{586}

24.2074

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A family has two cars. The first car has a fuel efficiency of 20 miles per gallon of gas and the second has a fuel efficiency of
Alex73 [517]
About the same as the previous posting

a = gallons used up by the 20 mpg car

b = gallons used up by the 30 mpg car

we know on that week they both consumed 65 gallons altogether, therefore a + b = 65.

we also know that they did a combined mileage of 1550.  Now, in 1 gallon the 20mpg car does 20(1) miles, in 2 it does 20(2) miles, in 3 gallons it does 20(3) and in "a" it does 20(a) or 20a miles.

likewise, the 30mpg car does 30(b) in b gallons, or 30b miles.

Therefore, 20a + 30b = 1550.

\bf \begin{cases}
a+b=65\implies \boxed{b}=65-a\\
20a+30b=1550\\
----------\\
20a+30\left(\boxed{65-a}  \right)=1550
\end{cases}
\\\\\\
20a-30a+1950=1550\implies 400=10a\implies \cfrac{400}{10}=a\\\\\\ \stackrel{\textit{gallons}}{40}=a

how many gallons is it consumed by the 30mpg car?  well b = 65 - a.
4 0
3 years ago
Preciso de ajuda na questao 1:
Helen [10]

Answer:

cxc joy

Step-by-step explanation:

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7 0
3 years ago
Two sisters drove 144 miles on a camping trip. They averaged at least 32 miles per gallon on the trip. Describe the number of ga
guajiro [1.7K]
<span>The answer should be 4.5 because they used AT LEAST 32 miles per gallon. So, 144/32=4.5 and since it's AT LEAST 32, 4.5 is the max amount used.</span>
5 0
3 years ago
Read 2 more answers
F (-2)=x+6. evaluate the function
damaskus [11]
X= -8       that uis your answer for that question :)
8 0
3 years ago
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Kim rode her bicycle 135 miles in 9 weeks, riding the same distance each week. Eric rode his bicycle 102 miles in 6 weeks, ridin
Juli2301 [7.4K]

Answer:

Eric rode 2 more miles per week than Kim rode.

Step-by-step explanation:

Find how many miles per week Kim rode by dividing the number of miles she rode by the number of weeks:

135/9

= 15

Find how many miles per week Eric rode:

102/6

= 17

So, Kim rode 15 miles per week and Eric rode 17 miles per week.

The answer is Eric rode 2 more miles per week than Kim rode.

4 0
3 years ago
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