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2 years ago

Will give 50 points

Mathematics

1 answer:

mafiozo [28]2 years ago

7 0

Answer:

120.96$

Step-by-step explanation:

150$ - 25% = 112$

112$ + 8% = 120.96$

Hope this helps!!

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How much longer is a 1 inch button than 3/8 inch button

KengaRu [80]

3/8+x=1

x=5/8

A 1 inch button is 5/8 inches longer than a 3/8 inch button.

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2 years ago

Solve the system of equations. x+2y=6; 3x-14y=8 please help

ira [324]

Let x = 6 = 2y so
3(6 - 2y) + 14y = 8 so
18 - 6y + 14y = 8 so
8y = -10 and
$y = \frac{ - 10}{8} = - \frac{5}{4} \\ \\ since \: x = 6 - 2y \\ 6 - 2( \frac{ - 5}{4}) = x \: so \\ x = 6 + \frac{10}{4} = \frac{24}{4} + \frac{10}{4} = \frac{34}{4} = \frac{17}{2}$

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3 years ago

Use the quadratic formula to solve for the roots of the following equation.<br> x 2 – 4x + 13 = 0

Artyom0805 [142]

Quadratic Formula: $x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$ , with a = x^2 coefficient, b = x coefficient, and c = constant

With our equation, plug in the values:

$x=\frac{4\pm \sqrt{(-4)^2-4*1*13}}{2*1}$

Next, solve the exponent and multiplications:

$x=\frac{4\pm \sqrt{16-52}}{2}$

Next, solve the subtraction:

$x=\frac{4\pm \sqrt{-36}}{2}$

Next, factor out i (i = √-1):

$x=\frac{4\pm \sqrt{36}i}{2}$

Next, solve the square root:

$x=\frac{4\pm 6i}{2}$

Lastly, divide and <u>your answer is:</u>

$x=2\pm 3i$

5 0

3 years ago

Read 2 more answers

PLEASE HELP !! (2/5) -50 POINTS-

likoan [24]

Answer:

3 -1 -2

5 1 6

Step-by-step explanation:

An augmented system has the coefficients for the variables and then the solution going across

Rewriting the equations to get them in the form

ax + by = c

-3x+y =2

3x-y =-2

5x+y = 6

The matrix is

3 -1 -2

5 1 6

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3 years ago

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At a store, 20 feet of fencing cost $36. At that rate, how much will 15 feet of fencing cost?

lukranit [14]

If 20 feet cost $36 then you can divide 36 by 20 to see how much one foot would cost. The answer is $1.80. Then multiply $1.80 x 15 feet and you get $27

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3 years ago

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