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3 years ago

How do you work a 45-45-90 angle in math????? I have a test tomorrow and I would really appreciate if someone answered.

Mathematics

1 answer:

strojnjashka [21]3 years ago

4 0

Answer:

What do you mean work a 45-45-90 degree angle... could you provide a picture of what you need to learn.

Step-by-step explanation:

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HURRRY QUICK!!!!!! HELP ME ON THIS!!!!!!!!!!!!!!!!!!!!

Vitek1552 [10]

It is exponential growth because it says 18.36% "more than" and it can be linear because it does not stay at a constant rate of change. Answer: Exponential growth
Hope this helps!

4 0

2 years ago

Researchers are interested in the effect of a certain nutrient on the growth rate of plant seedlings. Using a hydroponics grow p

Ede4ka [16]

Answer:

1) The mean calculated for this case is $\bar X=61.5$

2) $61.5-5.4=56.1$

3) $61.5+5.4=66.9$

4) B. An interval estimate gives us a sense of the accuracy of the point estimate whereas a point estimate alone does not.

Because with the confidence interval we know the confidence level of the interval, and the limits for the parameter at some significance level.

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

Part 1

In order to calculate the mean and the sample deviation we can use the following formulas:

$\bar X= \sum_{i=1}^n \frac{x_i}{n}$ (a)

$s=\sqrt{\frac{\sum_{i=1}^n (x_i-\bar X)}{n-1}}$ (b)

The mean calculated for this case is $\bar X=61.5$

The sample deviation calculated $s=5.143$

$\mu$ population mean (variable of interest)

n=6 represent the sample size

Part 2

The confidence interval for the mean is given by the following formula:

$\bar X \pm ME$ (1)

So if we have the margin of error 5.4mm we can find the lowr limit like this:

$61.5-5.4=56.1$

Part 3

$61.5+5.4=66.9$

Part 4

B. An interval estimate gives us a sense of the accuracy of the point estimate whereas a point estimate alone does not.

Because with the confidence interval we know the confidence level of the interval, and the limits for the parameter at some significance level.

4 0

3 years ago

Read 2 more answers

The probability distribution for the number of goals the Lions soccer team makes per game is given below. Number of Goals Probab

steposvetlana [31]

Answer: d. 0.55

Step-by-step explanation:

The given probability distribution:

Number of Goals 0 1 2 3 4

Probability .05 .15 .35 .30 .15

The probability that in a given game the Lions will score less than 3 goals

= probability that in a given game the Lions will score less than or equal to 2

= 0.5+0.15+0.35

= 0.55

Hence, the correct option is d. 0.55

3 0

3 years ago

Daisy and Sam scored baskets at the basketball game in the ratio of 3:2. Daisy scored 6 more baskets than Sam. How many baskets

Scorpion4ik [409]

Daisy scored 15 baskets

5 0

2 years ago

PLS HELP ME GUYS ITS MY LAST QUESTION IN GEOMETRY

aliina [53]

Answer:

Example = ( 12, 1 )

Step-by-step explanation:

There are many possible solutions to this equation, and all you would have to do to determine the ordered pair, is satisfy the following criteria -

$x - 6y = 6,\\- 6y = - x + 6,\\y = 1 / 6x - 1$

Take a look at a graph of the line y = 1 / 6x - 1. Any ordered pair that lies on this line is a solution to the equation. The " criteria " is that the ordered pair must lie on this line. Let me give you an example, ( 12, 1 ).

Hope that helps!

7 0

2 years ago