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g100num [7]
3 years ago
10

A square is shown below. Which expression can be used to find the area, in square units, of the shaded triangle in the square?

Mathematics
1 answer:
AlexFokin [52]3 years ago
6 0
The area of a square would me multiplying the width times the length and then multiplying by one half would be like splitting the square in half so your answer would be that last one right there. 6*6= area then multiply by 1/2 = half of area  Hope this helps! :D 
You might be interested in
Consider the following hypothesis test: H0: LaTeX: \mu_1-\mu_2=0μ 1 − μ 2 = 0 Ha: LaTeX: \mu_1-\mu_2\ne0μ 1 − μ 2 ≠ 0 The follow
Pavel [41]

Answer:

z=\frac{104-\bar 106}{\sqrt{\frac{8.4^2}{80}+\frac{7.6^2}{70}}}}=-1.53

Step-by-step explanation:

Data given and notation

\bar X_{1}=104 represent the mean for the sample 1

\bar X_{2}=106 represent the mean for the sample 2

\sigma_{1} =8.4 represent the population standard deviation for the sample 1

\sigma_{2}=7.6 represent the population standard deviation for the sample 2

n_{1}=80 sample size for the group 1

n_{2}=70 sample size for the group 2

z would represent the statistic (variable of interest)

Concepts and formulas to use

We need to conduct a hypothesis in order to check if the means for the two groups are the same, the system of hypothesis would be:

H0:\mu_{1}-\mu_{2} =0

H1:\mu_{1} -\mu_{2} \neq 0

If we analyze the size for the samples both are greater than 30 and we know the population deviations so for this case is better apply a z test to compare means, and the statistic is given by:

z=\frac{\bar X_{1}-\bar X_{2}}{\sqrt{\frac{\sigma^2_{1}}{n_{1}}+\frac{\sigma^2_{2}}{n_{2}}}} (1)

z-test: Is used to compare group means. Is one of the most common tests and is used to determine whether the means of two groups are equal to each other.

Calculate the statistic

First we need to calculate the mean and deviation for each sample, after apply the formulas (2) and (3) we got the following results:

And with this we can replace in formula (1) like this:

z=\frac{104-\bar 106}{\sqrt{\frac{8.4^2}{80}+\frac{7.6^2}{70}}}}=-1.53

7 0
3 years ago
Lawrence bought 2/3 pound of roast beef. He used 3/4 of it to make a sandwich. How much roast beef did Lawrence use for his sand
laila [671]
You multiply 3/4 by 2/3 it equals 2/4 which equals 1/2. The answer is 1/2.
3 0
3 years ago
Read 2 more answers
PLS HELP WILL MARK YOU BRAINLIEST!!!
Angelina_Jolie [31]

\\ \sf\longmapsto (3x-2x^2+3)-(-5x^2+3x+5)

\\ \sf\longmapsto 3x-2x^2+3+5x^2-3x-5

\\ \sf\longmapsto 5x^2-2x^2+3x-3x+3-5

\\ \sf\longmapsto 3x^2-2

6 0
2 years ago
Read 2 more answers
Yeah thanks m8 for this
nikitadnepr [17]

Step-by-step explanation:

the process is shown in the picture.

4 0
3 years ago
At which angle of rotational symmetry will triangle ABC map onto itself?
vredina [299]
The rotational symmetry has more than one order of rotational symmetry the objects can fit itself within 360 degrees.
3 0
3 years ago
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