Please help, my teacher is going mad!

Answer:

let cost of washer be x

cost of dryer be $745-x

we have

cost of washer =$95+($745-x)

x=$95+$745-x

x+x=$840

2x=$840

x=$840/2=$420

the cost of washer =$420

=$745-x=$745-420=$325

$325 is the cost of dryer.

Answer:

first of all I can't see nothing

Answer:

I can only guess that by x^2-2x-24 you mean the entire denominator.  In cases like this is is important to use parentheses to remove any doubts.  For example:

(x+8) / (x^2-2x-24).

This rational expression is undefined at any x for which the denominator, x^2-2x-24, is zero.  

x^2-2x-24 factors into (x+4)(x-6).  The roots are -4 and +6.  

Thus, the given expression is undefined at {-4,6} (set notation).

Step-by-step explanation:

Answer:

x = 48

Step-by-step explanation:

equation:

180 - x = 132

subtract 180 from each side:

180 - 180 - x = 132 - 180

-x = -48

divide both sides by -1:

[tex]\frac{-x}{-1} = \frac{-48}{-1}[/tex]

x = 48

to check, substitute 48 for x:

180 - x = 132

180 - 48 = 132

132 = 132

Answer:

240

hope this helps and pls give brainliest!

Answer:

The least common multiple (LCM) of 16, 30, and 40 is 240.

(Hope this helps! Btw, I answered first. Brainliest please!! :D)

Answer:

System of equations:

L = 5W + 7

2W + 2L = P

L = 62 cm

W = 11 cm

Step-by-step explanation:

Given the measurements and key words/phrases in the problem, we can set up two different equations that can be used to find both variables, length and width, of the rectangle.  

The formula for perimeter of a rectangle is:  2W + 2L = P, where W = width and L = length.  We also know that the L is '7 more than five times its width'.  This can be written as:  L = 5W + 7.  Using this expression for the value of 'L', we can use the formula for perimeter and solve for width:

2W + 2(5W + 7) = 146

Distribute:  2W + 10W + 14 = 146

Combine like terms:  12W + 14 = 146

Subtract 14 from both sides:  12W + 14 - 14 = 146 - 14 or 12W = 132

Divide 12 by both sides:  12W/12 = 132/12 or W = 11

Put '11' in for W in the equation for 'L':  L = 5(11) + 7 or L = 55 + 7 = 62.

Answer:

a)9cm

b)

[tex]3\pi[/tex]

c)60°

Answer:

$63.42 i think

Step-by-step explanation:

I HOPE THIS HELPS YOU OUT WITH YOUR QUESTION! PLZ LET ME KNOW IF IT DID! IT MAKES ME FEEL GOOD THAT SOMEONE APPRECIATES IT! ANYWAY, IF YOU HAVE A FEW MINUTES PLZ GOT TO MY PROFILE AND THANK MY ANSWERS (THE MORE THE MERRIER)

Answer:

answer is D)10

Step-by-step explanation:

there's a square in the corner, and that tells you this angle is a right angle which is 90degrees

so 90-60=3x

30=3x

x=10

Answer:

A. 30

x=30

Step-by-step explanation:

That is a 90 degree angle. 90-60=30

Answer:

5%

Step-by-step explanation:

hope this helps

I think I took the test. I'm not sure tho.

Answer:

D (6)

Step-by-step explanation:

FIRST METHOD

1. Use vector analogy (If you learnt)

Consider WS as a vector

x component of WS is 5

y component of WS is 3

2. Plug in numbers (Pythagorean Theorem)

[tex]\sqrt{5^{2}+3^{2}}[/tex] ≈ 5.83

Nearest integer is 6

SECOND METHOD

1. Distance between two points formula

[tex]d (length) = \sqrt{(x_{1}-x_{2})^{2}+(y_{1}-y_{2})^{2}}[/tex]

W = (x1,y1) S = (x2,y2)

W = (-2,-1) S = (3,2)

2. Plug in numbers

[tex]d (length) = \sqrt{(-2-3)^{2}+(-1-2)^{2}}[/tex]

3. d ≈ 5.83

Answer:D

Step-by-step explanation:

Answer:

118.73

Step-by-step explanation:

Answer:

118.74 ft²

Step-by-step explanation:

First, you're going to get the are of the following shapes, one by one.

Area of A Circle = πr²

Area of a Rectangle = bh

Area of a Square = s²

Step 1: Let's find the area for the Circle.

Diameter = 6

Radius = Diameter ÷ 2

6 ÷ 2 = 3

The Radius is 3.

A = (3.14)(3)²

Simplify:

(3.14)(9) = 28.26 ft²

Step 2: Find the Area of the Rectangle.

A = bh

11 × 2 = 22

Area of Rectangle = 22 ft²

Step 3: Find the Area of the Square

A = s²

13² = 13 × 13 = 169 ft²

Step 4: Subtract the Aea of the Circle and Rectangle form the Are of the Square.

169 - 28.26 - 22 = 118.74 ft²

Step-by-step explanation:

$1312.50×1.5%÷100

=20.25 that's taxable income

or

you can say $1312.50- 1.5%

=20.25

Answer:

17.7

Step-by-step explanation:

i could be wrong

Answer:

180:90

Step-by-step explanation:

Answer:

x = -6

Step-by-step explanation:

10 = 5(x+8)

=> 5(x+8) = 10

=> 5x + 40 = 10

=> 5x = 10 - 40

=> 5x = -30

=> x = -30/5

=> x = -6

Answer:

8 inches

Step-by-step explanation:

If 1 : 400

X :3200

Therefore 400x = 3200

X =8

Answer:

Step-by-step explanation:

Answer: 1. 12x+13

2. 13y−12

3. x=2

Step-by-step explanation:

Answer: Exponential, and increases by 343 percent.

Step-by-step explanation: Always depends on the number being raised, let's call it B. If B is between 0 and 1, it's a decay, but if B is greater than 1, it is exponential. In this case, B is 7, therefore it's exponential.

Answer:

Step-by-step explanation: The order of operations is a rule that tells the correct sequence of steps for evaluating a math expression. We can remember the order using PEMDAS: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Answer:

the value of x is 88

Step-by-step explanation:

plz see and check

Answer:

If you put it in your calculator and round it you should get the right answer.

Step-by-step explanation:

Answer:

66 BUCKS

I think.....

Answer:

(-3,2)

Step-by-step explanation:

Answer:

x=9

Step-by-step explanation:

0.6x+2.7=0.9x

move the terms

0.6x-0.9x=-2.7

collect like terms

-0.3x=-2.7

divide both sides

x=9

Answer:

Step-by-step explanation:

15x+2=9x+20

6x=18

x=3

if it's asking for the angle measure, you will just do:

15*3+2=47