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3 years ago

85

Mathematics

2 answers:

barxatty [35]3 years ago

6 0

Answer:

There is a answer to the question and with the steps

valkas [14]3 years ago

3 0

Answer:

45 degrees

Step-by-step explanation:

A triangle adds up to 180 degrees so,

85 + 50 + x = 180

135 + x = 180

x = 45

hope this helps and is right!! p.s. i really need brainliest :)

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For #36, why is the answer 4? Plz explain.

luda_lava [24]

I am getting 7 as the value of b. I do not believe 4 is a correct answer!

Here's why:

General equation of a circle in the xy plane

$(x-c_x)^2+(y-x_y)^2=r^2$

with $c_x\,\,\mbox{and}\,\,c_y$ being the x,y coordinates of the center.

The center point can be determined from the two endpoints of the diameter because the line segment is horizontal, so we just find the center of the x coordinates of the two points:

$c_x = -2+\frac{|8-(-2)|}{2}=3\\c_y = 3$

and the radius r = diameter/2 = 8-(-2)/2 = 5

so we have

$(x-3)^2+(y-3)^2=5^2$

Given a point on the circle (0,b) with b>0:

$(0-3)^2+(b-3)^2=5^2\\9+(b-3)^2 = 25\\(b-3)^2 = 16\\b=7$

6 0

3 years ago

11) If A = {19, 20, 21, 24} and B = {17, 19, 20, 22), list the elements of A U B.

Elodia [21]

Answer:

A U B = {17, 19, 20, 21, 22, 24}

Step-by-step explanation:

The symbol U is the union symbol, which denotes the union of two sets.

This means that given two sets A and B, the expression

A U B

indicates all the elements that belong to either set A or set B.

In this problem, we have the following two sets:

A = {19, 20, 21, 24}

B = {17, 19, 20, 22}

We can therefore list all the elements belonging to either set A or set B, they are:

17, 19, 20, 21, 22, 24

So, the expression A U B indicates the set:

A U B = {17, 19, 20, 21, 22, 24}

3 0

3 years ago

Please quickly help me!!

Ainat [17]

Look at the picture.

Answer:

$\angle ADB\cong\angle ACB\\\\\angle DAC\cong\angle DBC$

4 0

4 years ago

Pls answer this question im confused

expeople1 [14]

Answer:

D) 0.05, 0.0516, 16%, $\frac{5}{16}$ , 5.16

Step-by-step explanation:

Convert the factions and percentages to decimals to solve the problem quickly. Then, put them least to greatest.

Example: $\frac{5}{16}$ is 0.3125 and 16% is 0.16.

6 0

3 years ago

What is the axis of symmetry for the graph of y-4x=7-x^2

STALIN [3.7K]

It is symmetrical about the y axis

7 0

4 years ago