All categories

2 years ago

Can someone help ill give brainΩ

Mathematics

1 answer:

VikaD [51]2 years ago

7 0

Answer:

Step-by-step explanation:

∠BAC and ∠CAD are supplementary angles as they are formed on a line of the triangle.

Supplementary angles add up to 180°

This means ∠BAC + ∠CAD = 180

We are given that ∠CAD = 140

So ∠BAC + 140 = 180

==> subtract 140 from both sides

∠BAC = 40°

You might be interested in

Divide using polynomial long division<br><br>(3x2 - 11x - 26) = (x - 5)

julsineya [31]

Answer:

Step-by-step explanation:

8 0

3 years ago

The proportion of a population with a characteristic of interest is p = 0.37. What is the standard deviation of the sampling dis

lukranit [14]

The standard deviation (SD) of a sample proportion obtained when the sample size is 1,600 is equal to 0.0121.

<h3>What is a sample proportion?</h3>

A sample proportion can be defined as the proportion of individuals in a sample that have a specified characteristic or trait.

Mathematically, sample proportion can be calculated by using this formula:

$\hat{p} = \frac{x}{n}$

Where:

x represent the number of individuals with a specified characteristic.
n represent the total number of individuals in a sample.

In Mathematics, the standard deviation (SD) of a sample proportion obtained when the sample size is 1,600 can be calculated by using this formula:

Standard deviation (SD) = √(p(1 - p)/n)

Substituting the given parameters into the formula, we have;

Standard deviation (SD) = √(0.37(1 - 0.37)/1,600)

Standard deviation (SD) = √(0.37(0.63)/1,600)

Standard deviation (SD) = √(0.2331)/1,600)

Standard deviation (SD) = √0.0001457

Standard deviation (SD) = 0.0121.

Read more on standard deviation here: brainly.com/question/14467769

#SPJ1

8 0

1 year ago

Line l and Line m are parallel lines that have been rotated 180°. The resulting images are show as l' and m'. How can you descri

olga2289 [7]

They would be B parallel lines

5 0

3 years ago

Read 2 more answers

Multiply (2x^2-3x+5)(x^2+4x+1)

Anton [14]

The answer is B
100% use photomath
And sub to pewdiepie

7 0

4 years ago

If ARST = XYZ, which statement must be true?

Veseljchak [2.6K]

Answer:

The answer is B.

Step-by-step explanation:

That's because in A. angle S and angle Z aren't corresponding in the congruence of RST and XYZ.

In C. line RS and line ST can' be proven to be congruent because they arent a part of the what we know which is RST is congruent to XYZ. It says nothing about RS being congruent to ST.

And D. has the same problem as A. with the line ST and line XZ not corresponding the what we know. If it had said ST is congruent to YZ, or that RT is congruent to XZ then it would be true. Because RST is congruent to XYZ. And R corresponds to X, S corresponds to Y, and T corresponds to Z.

So B. would be the answer because R and X correspond to one another because it's written as RST ans XYZ and both R and X are the first letters represented in both triangles.

3 0

3 years ago