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yarga [219]
3 years ago
15

When finding the intersection of two lines from both Algebra 1 and geometry you first set the linear equations equal to each oth

er. find the intersection points of the two lines whose equations are shown below. be sure to find the X & Y coordinates.
y=5x+1 and y=2x-11
Mathematics
2 answers:
Diano4ka-milaya [45]3 years ago
7 0

Answer with explanation:

 The equation of twio lines are

  y=5 x +1-----(1)

y=2 x-11--------(2)

Equation (1) - Equation (2)

0=5x-2x+1-(-11)

0=3 x+12

Adding , -12 on both sides

-12=3x+12-12

3x= -12

Dividing by , 3 on both sides

x=-4

Putting the value of , x in equation 1,

 y= 5 × (-4)+1

 y= -20 +1

y= -19

Point of intersection of two lines are = ( -4, -19)

NNADVOKAT [17]3 years ago
6 0
I really dont know so sorry
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Two trains leave stations 456 miles apart at the same time and travel toward each other. One train travels at 105 miles per hour
love history [14]

Answer:

let x=distance 105 mph train traveled

(456-x)=distance 85 mph train traveled

Travel time = distance/speed (equal in both directions)

 

x/105=(456-x)/85

85x=105*456-105x

190x=105*456

x=105*456/190=252 miles

travel time=252/105=2.4 hrs

ans:

The two trains will meet in 2.4 hrs

Step-by-step explanation:

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3 years ago
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4 0
3 years ago
Find the outlier in the data: 32, 40, 34, 31, 20, 36, 40, 31. How does the outlier affect the mean?
Inessa [10]

The outlier  is 20

it affect the mean because

1)32 +40+34+ 31 +20+ 36 +40+31=264

2) 264 divided by 8= 33

so it gives you an odd number

8 0
3 years ago
Evaluate: 3-mn if m=-4 and n=-8
alexira [117]

Answer:

The answer is -29

Step-by-step explanation:

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The price of a computer was decreased by 30% to £147. What was the price before the decrease?
Sunny_sXe [5.5K]

Answer:

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Step-by-step explanation:

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100% represents the original cost

Divide the price by 70 to find 1% then multiply by 100 for original cost

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4 0
3 years ago
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