Third option.
Use y = mx + b (slope-intercept form) to get
y = (1/3)x + b.
Then plug in the point (1,-2) for x and y to figure out b...
-2 = (1/3)(1) + b
-2 - 1/3 = b, so b = -7/3
Now you have y = (1/3)x - 7/3. Convert to standard form by multiplying each term by 3 to get
3y = x - 7. Then move the 3y to the other side to get 0 = x - 3y - 7
Answer:
4x + 19 = 31.4
4x = 12.4
x = 3.1
Step-by-step explanation:
Answer:
0.50
Step-by-step explanation:
Let A represent the probability that it will be cloudy
Let B represent the probability that it will be rainy
P(A) = 0.40
P(B) = 0.30
P(A and B) = 0.20
For non mutually exclusive events the probability of event A or B is
P(A or B) = P(A) + P(B) - P(A and B)
= 0.40 + 0.30 - 0.20
= 0.50
There is a 50% probability that the picnic will be postponed. Therefore the probability that the picnic will not be postponed is equals 1 - P(A and B)
= 1 - 0.50
= 0.50 or 50%
You need to set a variable to represent the width, let's say "w'.
width = w
length (l) = 20 + w
Area = length * width
A = (20 + w) * w
See how I substituted the length in terms of w, above? We also know the area, so plug that in:
A = (20 + w) * w
1500 = (20 + w) *w
Solve for w. If it's easier, rewrite as:
1500 = w(20 + w)
Distribute the right side, and solve for w (width).
Then plug back into the equation for length --> length = 20 + w to find the other dimension
Answer:
c
Step-by-step explanation: