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3 years ago

Always sometimes never: two angles in a triangle are acute always sometimes never

Mathematics

1 answer:

Sergio [31]3 years ago

3 0

Answer: always

Step-by-step explanation:

The angles in a triangle add up to 180 degrees. If one angle is 90 degrees or more, the other two have to split the remaining 90 or less.

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Please answer and explain!!!

meriva

When you have f(3), that means X is equal to 3.

The problem states if x <-3 then f(x) would be -2.
If x is between -1 and -3, then f(x) would be 4x.
If x is greater than -1, f(x) would be x^2.

3 is greater then -1, so f(3) would be x^2, now replace x with 3 to get 3^2, which equals 9.

f(3) = 9

6 0

3 years ago

Statistics Question. Use the Desmos graphing calculator to find the least-squares regression line for the dataset in the table:

Soloha48 [4]

Given:

The table of values.

To find:

The least-squares regression line for the data set in the table by using the desmos graphing calculator.

Solution:

The general form of least-squares regression line is:

$\hat{y}=mx+b$ ...(i)

Where, m is the slope and b is the y-intercept.

By using the desmos graphing calculator, we get

$m\approx 2.55,b\approx -6.435$

Substitute these values in (i).

$\hat{y}=(2.55)x+(-6.435)$

$\hat{y}=2.55x-6.435$

Therefore, the correct option is A.

8 0

3 years ago

In a car lot, the ratio of the number of new cars to the number of preowned cars is 6 to 5. The total number of new and preowned

Mandarinka [93]

So the lot has (6/(6+5))*100 percent of new cars and 66*(6/11)*100 percent = 36 new cars before the sale, hence 66-36 =30 preowned cars before sale. After the sale it’s 32 new cars and 28 preowned so 32/28 makes it 8/7

6 0

3 years ago

Find the distance between the two points. (-5,5) (1,-2)

makkiz [27]

Answer:

The distance between the points is 9.219544457292887

Step-by-step explanation:

7 0

3 years ago

Mopeds (small motorcycles with an engine capacity below 50 cm3) are very popular in Europe because of their mobility, ease of op

Anika [276]

Answer:

The probability that the maximum speed is at most 49 km/h is 0.8340.

Step-by-step explanation:

Let the random variable X be defined as the maximum speed of a moped.

The random variable X is Normally distributed with mean, μ = 46.8 km/h and standard deviation, σ = 1.75 km/h.

To compute the probability of a Normally distributed random variable we first need to convert the raw score of the random variable to a standardized or z-score.

The formula to convert X into z-score is:

$z=\frac{X-\mu}{\sigma}$

Compute the probability that the maximum speed is at most 49 km/h as follows:

Apply continuity correction:

P (X ≤ 49) = P (X < 49 - 0.50)

= P (X < 48.50)

$=P(\frac{X-\mu}{\sigma}$

*Use a z-table for the probability.

Thus, the probability that the maximum speed is at most 49 km/h is 0.8340.

8 0

4 years ago