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3 years ago

Please helppppppp!! Thanks

Mathematics

1 answer:

Marat540 [252]3 years ago

4 0

So the formula for area of a triangle is base * height / 2.

(In this case the height could be the altitude)

So if we rotate the shape, so line AC is the base, we can therefore clearly see what the height and length are.

If we count it, the line AC would equal 5 segments and the line BD would equal 3 segments.

So, 5 * 3 / 2

Or,

15/2

Which is 7.5.

So your answer is 7.5 square units.

You might be interested in

Denise makes three times as many chocolate cupcakes as vanilla cupcakes. She also makes three dozen strawberry cupcakes. If Deni

slamgirl [31]

Answer:

6 dozens

Step-by-step explanation:

Vanilla, v = x

Chocolate, c = 3x

Strawberry, s = 3 dozens = 36

Total cupcakes = 132

Hence,

x + 3x + 36 = 132

4x = 96

x = 96 / 4

x = 24

Chocolate = 3 * 24 = 72

Dozens of chocolate = 72 /12 = 6 dozens

7 0

3 years ago

Pls help asap!!! Solve for x . 2x=y

OLEGan [10]

The answer to this question is 0

6 0

2 years ago

PLEASE HELP ASAP!!!!!

dedylja [7]

I think there are 44 sunflowers, hope it helps ya

6 0

3 years ago

Kirsten runs an experiment for her Research Methods class in which she studies vocabulary learning in introductory-level French

Sidana [21]

Answer:

Kristen should use the paired t-test.

Step-by-step explanation:

The dependent t-test (also known as the paired t-test or paired-samples t-test) compares the two means associated groups to conclude if there is a statistically significant difference between these two means.

We use the paired t-test if we have two measurements on the same item, person or thing. We should also use this test if we have two items that are being measured with a unique condition.

For instance, an experimenter tests the effect of a medicine on a group of patients before and after giving the doses.

In this case, Kristen assesses the students' knowledge of French vocabulary at the start of the semester and then again at the end of the semester.

So, she collects data before and after the semester for vocabulary learning in introductory-level French class.

Thus, she is using a paired t-test to analyze whether the French students significantly increased their knowledge of French vocabulary.

The hypothesis is defined as:

H₀: There is no difference between the two means, i.e. μ₁ - μ₂ = 0.

Hₐ: There is a significant difference between the two means, i.e. μ₁ - μ₂ ≠ 0.

The test statistic is:

t = Sample mean difference ÷ (Standard deviation of difference/ Sample size)

Thus, Kristen should use the paired t-test.

7 0

3 years ago

please help me with this: Suppose a teacher gives 10 points for putting your name on a 100 point test. The minimum score on that

sukhopar [10]

Suppose there are n observations in a data set consisting of the observations x1, x2, x3, ..., xn.

Rounding rule: round to one more decimal place than the highest number of decimal places contained in the data.

The formula can also be represented as sigma * xi / n.

x bar = SAMPLE MEAN

Mu = POPULATION MEAN

n= sample size
N= POPULATION SIZE

The sum of the deviations from the mean is always equal to 0.

The mean will always be pulled towards any outliers.

Ex: the average price of similar televisions at different stores. This is quantitative data that does not have outliers since the TVs at the different stores are similar

3 0

3 years ago