it takes 2 painters 5 hours to finish painting a house. how long would it take to finish painting a house if there were 20 painters working at the same rate?

Answer:

x = 11, ∠ 2 = 146°

Step-by-step explanation:

∠ 2 and 146° are corresponding angles and are congruent, then

∠ 2 = 146°

Thus

13x + 3 = 146 ( subtract 3 from both sides )

13x = 143 ( divide both sides by 13 )

x = 11

Answer:

2/3

Step-by-step explanation:

Answer:

Expand the polynomial using the FOIL method.

x^2−3x+2

Answer:

x^2 - 3x + 2

Step-by-step explanation:

x times x is x^2

x times - 1 is -1x

-2 times x is -2x

-2 times -1 is 2

x^2 - 3x + 2

Answer:

Step-by-step explanation:

We can solve this with some pretty simple substitution

First write that a=2b+8

and our reasoning for this is that we added 2b from the first equation

Then write

4(2b+8)+3b=21

After we figured out what A was in the previous part we are able to substitute that into our other equation

Then you solve for b from here

8b+32+3b=21

11b=-11

b= -1

If you have any questions leave them below

Answer:

0.625

Step-by-step explanation:

Given the points :

(0, 4) and (-8, -1)

x1 = 0 ; y1 = 4

x2 = - 8 ; y2 = - 1

Slope, m = rise / run

Rise = y2 - y1 = - 1 - 4 = - 5

Rise = x2 - x1 = - 8 - 0 = - 8

The slope, m = - 5 / - 8

Slope, m = 0.625

Hamali has 40 grapes

Answer:

Step-by-step explanation:

a. A=X

B=Z

C=Y

b. AB = XZ

AC=XY

BC= ZY

Answer:

a. A=X

B=Z

C=Y

b. AB = XZ

AC=XY

BC= ZY

Step-by-step explanation:

Hope this helped have an amazing day/month/year!

Answer:c

Step-by-step explanation:

Answer:

I think it is 19.7

Step-by-step explanation:

Answer:

2 x 5 = 10

10 x a = 10a

answer = 10a

Step-by-step explanation:

the answer on top is step by step

ax2x5

    ^   ^

      10xa

The way I learned it was that if they dont have the same variables dont touch them, so what I did was multiply the like numbers (2 and 5). Why are they alike? Because they don't have a variable! I then just put the X sign there to show that there is no other way to multiply this. If it where addition, it would be 10+a so that would equal 10a.

Given that the initial point of the vector is (1,-2) and the termination point of the vector is (0,0).

So, the tail of the vector is at point (1,-2) and the head of the vector is at (0,0). The vector, [tex]\vec{v}[/tex], has been shown in the figure.

The magnitude of the vector:

[tex]|\vec{v}|=\sqrt{(1-0)^2+(-2-0)^2}=\sqrt{1+4}=\sqrt{5}[/tex]

The direction of a vector is the angle made by a vector with the positive direction of the x-axis.

From the figure, [tex]\theta = 180 \degree\tan ^{-1} \left|\frac {0-(-2)}{0-1}\right|[/tex]

[tex]\theta = 180 ^{\circ} - \tan^{-1}(2) = 180 ^{\circ} - 63.43^{\circ}[/tex]

[tex]\theta =116.57 ^{\circ}[/tex]

Hence, the required vector having a magnitude [tex]\sqrt {5}[/tex] and direction [tex]116.57 ^{\circ}[/tex] has been shown in the figure.

Answer:85

Step-by-step explanation: In this problem you are trying to find the missing angle of a line. In a line all angles have to add up to 180 so what you wanna do first is add 55 and 40 which gives you 95. Next, you wanna subtract 95 from 180 which will give you 85. Now you know the missing angle.

Answer:

The slope is 2

Step-by-step explanation:

Pick two points and plug into this equation: y2-y1/x2-x1

(-3,2) and (-1,6)

2-6/-3-(-1)=-4/-2= 2

Answer:

The slope of the linear function is 2

Step-by-step explanation:

Calculating the Slope of a Line

Suppose we know the line passes through points A(x1,y1) and B(x2,y2). The slope can be calculated with the equation:

[tex]\displaystyle m=\frac{y_2-y_1}{x_2-x_1}[/tex]

The table shows four points: (-3,2), (-1,6), (1,10), and (3,14). To find the slope on the line passing through them we only need two, for example (-3,2), (-1,6):

[tex]\displaystyle m=\frac{6-2}{-1+3}[/tex]

[tex]\displaystyle m=\frac{4}{2}=2[/tex]

Any other pair of points should give the very same value for the slope. Use (1,10), and (3,14):

[tex]\displaystyle m=\frac{14-10}{3-1}[/tex]

[tex]\displaystyle m=\frac{4}{2}=2[/tex]

Thus, the slope of the linear function is 2

Answer:

D

Step-by-step explanation:

when shifting left or right its in parentheses

when shifting left its a + when shifying right its a -

hope this helps <3

Answer:

your answer would be A

Step-by-step explanation:

just divide both sides by 12

therefor you answer is a

mark me brainly

also thanks for the points

andddd

sparkles and love

☆*: .｡. o(≧▽≦)o .｡.:*☆

Answer:

A

Step-by-step explanation:

Answer:

1135.28

Step-by-step explanation:

1102 * (1.02) = 1124.04

1124 * (1.01) = 1135.28

Answer:

x ≈ 31.0°

Step-by-step explanation:

Using the tangent ratio in the right triangle

tanx = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{9}{15}[/tex], then

x = [tex]tan^{-1}[/tex] ([tex]\frac{9}{15}[/tex] ) ≈ 31.0° ( to 1 dec. place )

Answer: x=-6 so it has to be the first option

Step-by-step explanation:

This is the answer upon dividing the polynomial.

Answer:

-1 4/5, -1.7, -1 1/10, -1.

Step-by-step explanation:

We convert all of these to tenths. -1 4/5 becomes - 1 8/10. -1.7 becomes -1 7/10. -1 1/10 is already in tenths and -1 is a whole number. When putting these from least to greatest, remember that the bigger the negative, the less the number is.

Answer: $43.20

Step-by-step explanation:

Answer:

=4/1 or 4

Step-by-step explanation:

Remember Rise/Run

also remember this formula:

y2-y1/

x2-x1

Your coordinates are: (-2, 1) (-3, -3)

-3-1/

-3-(-2) = -4/-1  or 4

Two negatives cancel out and make it a positive.

Look at attachment for further information

Any questions or concerns, please ask

Hope this helps (:

Answer: 5

Step-by-step explanation:

Answer: X x (X^2-5)

Step-by-step explanation:

Answer: ↓↓

Step-by-step explanation:

10 ÷ -5

The answer's -2 btw

Hope this was what you were asking

Answer:

By putting x = -x in f(x) i.e. f(-x) we didn't get f(x) or -f(x) so, the function is neither even nor odd.

Step-by-step explanation:

We need to explain why the function of [tex]f(x)=4x^2+8x[/tex] is neither even or odd

First we will understand, when the function is even and odd

Even function:

A function is even if f(-x) = f(x)

Odd function:

A function is odd if f(-x) = -f(x)

So, if we get the above result by putting x = -x, then we can say that the function is even or odd.

If we don't get any of the above results then the function is neither even nor odd.

So, for the given function: [tex]f(x)=4x^2+8x[/tex]

Put x = -x

[tex]f(x)=4x^2+8x\\Put x=-x\\f(-x)=4(-x)^2+8(-x)\\f(-x)=4x^2-8x[/tex]

So, by putting x=-x in f(x) i.e. f(-x) we didn't get f(x) or -f(x) so, the function is neither even nor odd.

Answer:

[tex]coplementary \: angles \: = 90° \\ (x + 9)° + (7x - 15)° = 90° \\ (8x - 6)° = 90° \\ 8x = 90 + 6 \\ 8x = 96° \\ x = 12\\ angle \: B. = ((7 \times 12)- 15) \\ = 69°[/tex]

Answer:

√3/5 B)....…...........

Answer:

can you give me an answer to something I need help on and ill answer this

Step-by-step explanaton:

Answer:

about 2 people

Step-by-step explanation:

16.95+9x=25.50+5x

16.95+4x=25.50

4x=8.55

x=2.13