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gtnhenbr [62]
3 years ago
13

Find the slope of a line parallel to x-y=18

Mathematics
1 answer:
jeka943 years ago
8 0

Answer:

Mparallel = 1

Step-by-step explanation:

Hope this helps!

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points a,b and c are collinear on AC, and AB:BC=3/4. A is located at (x,y), B is located at (4,1), and c is located at (12,5). w
olga_2 [115]
We have two unknowns: x and y. Now, we have to formulate 2 equations. The first would come from the use of the given ratio:

We use the distance formula to find the distance between coordinates:

3/4 = √[(x-4)²+(y-1)²] / √[(4-12)²+(1-5)²]
√[(x-4)²+(y-1)²]  = 3√5
(x-4)²+(y-1)² = 45
x² - 8x + 16 + y² - 2y + 1 = 45
x² - 8x + y² - 2y = 28  --> eqn 1

The second equation must come from the equation of a line:
y = mx +b
m = (5-1)/(12-4) = 1/2

Substitute y=5 and x=12 for point (12,5)
5 = (1/2)(12) + b
b = -1

So, the second equation is

y = 1/2x -1 or x = 2 + 2y --> eqn 2

Solving the equations simultaneously:
(2 + 2y)² - 8(2 + 2y) + y² - 2y = 28 
Solving for y, 
y = -2
x = 2+2(-2) = -2

Therefore, the coordinates of point A is (-2,-2).

5 0
2 years ago
Read 2 more answers
Explain the steps you would take to find the area of the following composite shape. (Use 3.14 for TT.)
Advocard [28]

Answer:

pi r squared divided by 2 for the half circle then add the area of the box to you number and there is your area

3 0
2 years ago
Simplify this expression 8+19m-6m
gladu [14]
I am pretty sure that it would be 13m + 8. All you have to do is combine the like terms.
7 0
3 years ago
There are four slices of pepperoni pizza and three slices of veggie pizza sitting on the counter. what is the probability of ran
Otrada [13]

Answer:

The probability of randomly choosing a slice of veggie pizza is 3/7

Step-by-step explanation:

Probability is the measure of uncertainty of any event. It is the ratio of number of favorable outcomes to the total number of possible outcomes. That is,

Probability, P(A) = (Number of a Favourable outcome) / (Total number of possible outcomes).

From the question,

There are four slices of pepperoni pizza and three slices of veggie pizza, this means

Total number of favourable outcomes = 4 + 3 = 7

The favourable outcome is the veggie pizza, therefore

Number of favourable outcome = 3

Hence,

Probability P (A) = 3 ÷ 7

P(A) = 3/7

The probability of randomly choosing a slice of veggie pizza is 3/7

5 0
2 years ago
3:20pm to 8:00 pm how many hour's is that
Alex
4 hours and 40 minutes
6 0
2 years ago
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