Answer:
1. length = 88 m., 2. width = 75 cm.
Step-by-step explanation:
To find perimeter, we need to add together the measure of all of the sides. Since we now that the garden is a rectangle, we know that two of the sides are the same length and the other 2 sides are the same length.
The equation for finding perimeter in this question: P = w + w + l + l
let's put the values we know into the equation.
318 = 71 + 71 + l + l
Combine like terms: 318 = 142 + 2l
Subtract 142 from both sides to isolate the 2l: 176 = 2l
Divide both sides by 2 to isolate the l: 88 = l
To find area, you use this equation: A = l * w
Let's put the values we know into the equation
6,675 = 89 * w
Divide both sides by 89 to isolate the w
75 = w
3x + 4y = 17.....multiply by 4
-4x - 3y = -18 ...multiply by 3
------------------
12x + 16y = 68 (result of multiplying by 4)
-12x - 9y = - 54 (result of multiplying by 3)
------------------add
7y = 14
y = 14/7
y = 2
3x + 4y = 17
3x + 4(2) = 17
3x + 8 = 17
3x = 17 - 8
3x = 9
x = 9/3
x = 3
ur solution is (3,2)
Answer:
C) a positive correlation
Step-by-step explanation:
<em>More people ⇒ Longer time</em> is a positive correlation between those variables. However, <em>longer time</em> is not the desired outcome.
Rather, <em>shorter time</em> is the desired outcome. The correlation between <em>more people</em> and <em>shorter time</em> is negative. In order to compute that correlation numerically, one would have to define a function that would give a numerical value for "shorter time" that would model the goodness of outcome as time gets shorter.
Answer:
4/7
Step-by-step explanation:
Probability is the likelihood or chance that an event will occur.
Probability = Expected outcome/Total outcome
Given
Total outcome = 2blue ties+1red tie+2blue coats+2orange coats
Total outcome = 7
If he wears a blue tie, then the expected outcome will be 2.
Probability that he wears blue tie = 2/7
If he wears a blue coat, then the expected outcome will be 2.
Probability that he wears blue coat = 2/7.
The probability that he wears either a blue tie or a blue coat will be 2/7+2/7 = 4/7