Help me with 21 and 22

Answer:

The third one because you just look at the x values of each dot. it isn't the fourth because domain does not include y values.

Answer:

x = 8

ABD = 46 degrees

DBC = 44 degrees

Step-by-step explanation:

Complementary Angles: two angles who’s sum together is 90 degrees

2x + 30 + 3x + 20 = 90

5x + 50 = 90

5x (+ 50 - 50) = 90 - 50

5x = 40

5x/5 = 40/5

x = 8

2(8) + 30

16 + 30

46

3(8) + 20

24 + 20

44

ABD = 46

DBC = 44

This is what I did in the photo

[tex]\\ \sf\longmapsto x+40=90[/tex](Complementary)

[tex]\\ \sf\longmapsto x=90-40[/tex]

[tex]\\ \sf\longmapsto x=50[/tex]

Now

[tex]\\ \sf\longmapsto y+40=180[/tex]

[tex]\\ \sf\longmapsto y=180-40[/tex]

[tex]\\ \sf\longmapsto y=140[/tex]

Now

[tex]\\ \sf\longmapsto x+y=140+50=190[/tex]

Answer:

B because Comp A is $60 for sure plus $42.95 per month and Comp B is $25 for sure and $49.95 per month

Answer:

hey cutie

Step-by-step explanation:

Answer:

Language:

1. Circle All terms

2. 12 or 13

3. 8

4. 12 or 13

Plot:

Get a graph for this one, the number is the first parameter is x, find that x value along the x axis then after finishing it locate v, find y value along the y axis.

Solve:

1. x = 3

2. x = 1

3. x = 3

4. x = x = 5

5. x = 8

6. x = 12

7. x = 9

8. x = 4

9. x = 3

10. x = 6

11. x = 4

12. x = -12

13. x = 5

14. x = 6

15. x = 16

Step-by-step explanation:

Variables - in algebra is a symbol or a letter.

Constants - are numbers

Coefficients - are the numbers that are with variables

Use this description and circle the examples.

For the plot use a gird, or gets a coordinate plane.

Lastely for the Solve example minus or plus the constant with the coefficient and variable forum the constant outside that has been equal to. Then divide by the variable coefficient, and you will get your x value. Example:

34 - 13 = 21 / 7 thus x = 3

Answer:

y = - 3x + 21

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = - 3x + 4 ← is in slope- intercept form

with slope m = - 3

Parallel lines have equal slopes , then

y = - 3x + c ← is the partial equation

To find c substitute (7, 0 ) into the partial equation

0 = - 21 + c ⇒ c = 0 + 21 = 21

y = - 3x + 21 ← equation of parallel line

Answer:

5 buses for all of the students to be able to go

Step-by-step explanation:

45 x 5 = 225 so there would be 7 more seats left but 5 buses is the amount of buses you would need

Answer: slope = 4/3

Step-by-step explanation:

(24-12)/(6- -3)

= 12/9

= 4/3

Answer:

[tex]\frac{1}{4}[/tex]

Step-by-step explanation:

Using the rule of exponents / radicals

[tex]a^{\frac{m}{n} }[/tex] = [tex](\sqrt[n]{a})^m[/tex]

[tex]a^{-m}[/tex] = [tex]\frac{1}{a^{m} }[/tex] , then

[tex]-8^{-\frac{2}{3} }[/tex]

= [tex]\frac{1}{-8^{\frac{2}{3} } }[/tex]

= [tex]\frac{1}{(\sqrt[3]{-8})^2 }[/tex]

= [tex]\frac{1}{-2)^{2} }[/tex]

= [tex]\frac{1}{4}[/tex]

Answer:

120 feet

Step-by-step explanation:

since it is a perfect square, you just need the square root of 14,400.

(sqrt)14400 = 120

double check ans: 120 x 120 = 14400

Answer:

40 percent

Step-by-step explanation:

Now percentage formula

Whatever

- - - - - - - - - - x 100

Total whatever

In this case your whatever is the hits. according to the question, if i said he had 40 hits in 40, that's a 100percent. So... Your whatever is 16, total whatever is 40

16

- - - - - - x 100

40

= 40 percent

the line isn't vertical because the y coordinate would have to be 0 in order for the line to be vertical

Answer:

y= -(1/2)x+1

Step-by-step explanation:

it is a vertical line so it also passes through (1,0) so slope (m)= -(1/2)

c=1

Answer:

93 degrees

Step-by-step explanation:

First, you would need to observe the image and see where to start off. You can see that there is a triangle below the "?" and you would be able to get the answer if you can find the measures of the small triangle(because of vertical angles) So,

180-127= 53.

180-146=34.

Since the angles of a triangle adds up to 180 degrees, 53+34+x=180.

x=93

Now, just flip the angle around and "?" = 93 degrees.

Answer:  93 degrees

===========================================================

Explanation:

Let x be the question mark angle we want to find.

Let y be adjacent to the 127 degree angle

Let z be adjacent to the 146 degree angle.

Refer to the diagram below.

Note that in the diagram, I have a second copy of 'x' because the two x angles are vertical angles. Vertical angles are always congruent.

Let's find angle y

127+y = 180

y = 180-127

y = 53

Do the same for angle z

z+146 = 180

z = 180-146

z = 34

Then notice how,

x+y+z = 180

x+53+34

x+87 = 180

x = 180-87

x = 93

Answer:

Step-by-step explanation:

(-5a²b⁷)⁷ = (-5)⁷*(a²)⁷*(b⁷)⁷            {(x*y)ⁿ = xⁿ yⁿ}

              = (-5)⁷a²ˣ⁷ b⁷ˣ⁷              { (xᵃ)ᵇ = xᵃˣᵇ}

              = (-5)⁷a¹⁴b⁴⁹

Answer:

D

Step-by-step explanation:

You cannot divide a decimal by a full number and also you move the decimal too places too the right so the bottom option

Answer:

Step-by-step explanation:

Find the value of each expression and compare with 62.35:

Answer:

1/6

Step-by-step explanation:

Answer:

1/33

Step-by-step explanation:

1/33 in decimal form is 0.03 repeating

Answer: 1 hour and 8 minutes or 68 minutes.

Step-by-step explanation:

For this question I would start by finding how many minutes it would take to get to 4pm since it's the closest hour to 3:52 pm.

If we think of the 00 in 4:00 as 60, then we can do 60-52=8.

Then we know that 4:00 + 1 hour is 5:00.

To find the final answer add 8 minutes + 1 hour, which is 1 hour and 8 minutes.

This can also be answered as 68 minutes because, 60 minutes (1 hour) +8 minutes = 68 minutes.

Answer:

PR=22

Step-by-step explanation:

3x+6x+4=14x-6

9x+4=14x-6

10=5x

x=2

Plug in

3(2)

6

6(2)+4

12+4

16

16+6

22

So the bottom should equal 22

14(2)-6

28-6

22

Hope this helps

Brainliest would be appreciated

Answer:

f(20) = 168

Step-by-step explanation:

To find the 20th term, substitute n = 20 into f(n) , that is

f(20) = 9(20) - 12 = 180 - 12 = 168

Answer: D: 0

Step-by-step explanation:

Without doing a long division.

[tex]Remember:\\\\\\\boxed{a^3+b^3=(a+b)(a^2-ab+b^2)}\\\\\dfrac{x^3+1}{x^2-x+1} =\dfrac{(x+1)(x^2-x+1)}{x^2-x+1} =x+1\\\\remainder\ is\ 0\\\\Answer\ D\\[/tex]

Answer:

96 inches

Step-by-step explanation:

Because we already have the perimeter, we have to solve the formula for L (length). To do this, simply subtract 2W (width) from both sides so that we're left with 2L by itself. The formula is now 2L= P-2W. When we plug in the numbers we get 2L= 20'-2(2'). All we have to do is solve for L.

2L= 20'-4'

2L=16'

[tex]\frac{2L}{2}[/tex]=[tex]\frac{16}{2}[/tex]

L=8'

We need the answer to be in inches, so multiply 8(12) to get 96''

X=30 the answer is 30

Answer:

x = 30

Step-by-step explanation:

-38 + 6x = 52 + 3x

+38           +38

-----------------------------

6x  = 90 + 3x

-3x         -3x

------------------------------

3x = 90

/3     /3

-------------------------------

x = 30