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KIM [24]
3 years ago
15

Can someone help me? ​

Mathematics
1 answer:
Natali5045456 [20]3 years ago
4 0

Answer:

For 7 miles, it would take her 63 minutes (an hour and 3 minutes) to run

Step-by-step explanation:

it takes her 9 minutes to run one mile, therefore if you take 9×7 you get 63. It would take her 234 minutes to run the 26 mile marathon.

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AB and BC form a right angle at point B if A = (-3,-1) and B = (4,4) what is the equation if BC
sergejj [24]

Answer:

7x+5y-48=0

Step-by-step explanation:

Refer the attached figure .

We are given a line AB

Point A=(x_1,y_1) = (-3,-1)

Point B=(x_2,y_2) = (4,4)

Formula for slope 'm' when two points are given :

m=\frac{y_2-y_1}{x_2-x_1}

Substituting thew values

m=\frac{4-(-1)}{4-(-3)}

m=\frac{5}{7}

Since we are given that AB is perpendicular to BC

So, By property - perpendicular slopes are negative reciprocals of each other.

\Rightarrow m_1\times m_2 =-1

\Rightarrow \frac{5}{7}\times m_2 =-1

\Rightarrow m_2 = \frac{-7}{5}

So, Slope for line BC : m_2 = \frac{-7}{5}

Point B = (4,4)

Formula of equation of line : y-y_1=m(x-x_1)

y-4=\frac{-7}{5}(x-4)

5(y-4)=-7(x-4)

5y-20=-7x+28

7x+5y-20-28=0

7x+5y-48=0

Hence the equation of line BC : 7x+5y-48=0

5 0
3 years ago
When in-person, I love celebrating holidays with my students, including Halloween and Valentine's Day. Valentine's Day, especial
Murljashka [212]

Answer:

5x +4(2y) = 50

i can only think of this but i have no idea if it's correct

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
describe the steps you would take to determine the distance in miles between two towns that are 200 kilometers apart
MaRussiya [10]
It will be -200 kilometers because you gotta get a ruler
6 0
3 years ago
Which expression is equivalent to ^3√216x^27? 6x3 6x9 72x3 72x9
hichkok12 [17]
To solve this problem you must apply the proccedure shown below:
 1. You have the following expression given in the problem above:
 \sqrt[3]{216 x^{27} }
 2. Rewriting the expression we have: 
 \sqrt[3]{6^3 x^{27} }
 3. You have that 6^3 and the exponent 27
 are divisible by index 3
. Therefore, you have:
 \sqrt[3]{216 x^{27} } =6 x^{9}
 Therefore, as you can see,
 the answer is the option, which is: 6 x^{9} 

8 0
3 years ago
Read 2 more answers
What is the value of w?
natulia [17]
This on is very easy go to my website so i can explain it better for you

 <span>https://www.youtube.com/channel/UCaxhPMTZBmFcxAZ4hYpBf_w 
</span>
Hope this 
3 0
3 years ago
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