Answer:
57 ft²
Step-by-step explanation:
Lol I always found the area formula for a parallelogram to be interesting- it's like a rectangle, just the base times the height.
So to find this, you would subtract the area of the parallelogram by the area covered by the car.
(17ft · 9ft) - (16ft ·6ft) = 153ft² - 96ft²
= 57 ft²
Lol don't forget the units! A few of my teachers have been really picky about it, where if you don't include units, the entire answer is wrong : ( but either way, it's a good habit to pick up!
The question above may be answered through the concept of ratio and proportion. The ratio between the population of a certain city and the radius of the circle used should be proportional. Mathematically,
19465000/5 = 37691000/x₁ = 25,675,000/x₂
The values of x₁ and x₂ are 9.7 cm and 6.6 cm, respectively.
The phrasing "nine times out of ten" means 9/10 = 0.90 = 90% is the confidence level. We're confident 90% of the time that the confidence interval captures the population parameter we're after (in this case mu = population mean)
The portion "have an average score within 5% of 75%" means that 75% = 0.75 is the center of the confidence interval, and it goes as low as 0.75 - 0.05 = 0.70 and as high as 0.75 + 0.05 = 0.80
This confidence interval is from 70% to 80%, meaning that nine times out of ten, we're confident that the average score is between 70% and 80%
We write the confidence interval as (0.70, 0.80). It's common to use the notation (L, U) to indicate the lower (L) and upper (U) boundaries. You might see the notation in the form L < mu < U. If so, then it would be 0.70 < mu < 0.80; either way they mean the same thing.
The margin of error is 0.05 as its the 5% radius of the interval. It tells us how far the most distant score is from the center (75%)
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In summary, we have these answers
- confidence level = 90%
- margin of error = 5% = 0.05
- confidence interval = (0.70, 0.80)
- interpretation = We're 90% confident that the average exam score is between 0.70 and 0.80
Answer:
B
Step-by-step explanation:
When x = 1, it appears y is in between 1 and 2.
The only choice that satisfies this is B.
D is the correct answer choice.
Subtract the 2 from both sides.
y>-3x -5
Due to the > symbol, a dashed line and shaded above is needed to complete the graph.
