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3 years ago

Answer the following questions.

Mathematics

1 answer:

Nesterboy [21]3 years ago

7 0

Answer:

Step-by-step explanation:

he discount? Round the answer to two decimal places.

(b) A customer paid $16.99 for a shirt that normally sells for $19.99. What percent

discount did the customer receive? Round your answer to the nearest percent.

applied after the promotional discount. The promotion is a 20% discount on all items

in the store. The coupon is an additional 10% off of the order. The customer claims

the 20% discount should be made before the 10% discount. The salesperson claims

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What is the simplified expression for 2(x - 5)?

charle [14.2K]

If you would like to know the simplified expression for 2 * (x - 5), you can find this using the following steps:

2 * (x - 5) = 2 * x - 2 * 5 = 2 * x - 10

The correct result would be <span>2 * x - 10.</span>

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3 years ago

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Which statement is true?

ZanzabumX [31]

Answer:-3 3/5 <1.3

Step-by-step explanation:

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3 years ago

The length of a rectangle is the sum of the width and one. The area direct angle 72 units. What’s the length, in units, of the r

insens350 [35]

Answer:

The length of the rectangle is of 9 units.

Step-by-step explanation:

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

$ax^{2} + bx + c, a\neq0$ .

This polynomial has roots $x_{1}, x_{2}$ such that $ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})$ , given by the following formulas:

$x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}$

$x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}$

$\bigtriangleup = b^{2} - 4ac$

Area of a rectangle:

A rectangle has width $w$ and length $l$ . The area is the multiplication of these measures, that is:

$A = wl$

The length of a rectangle is the sum of the width and one.

This means that $l = w+1$ , or $w = l - 1$

The area direct angle 72 units. What’s the length, in units, of the rectangle

We want to find the length. So

$wl = 72$

$(l-1)l = 72$

$l^2 - l - 72 = 0$

Quadratic equation with $a = 1, b = -1, c = -72$ . So

$\bigtriangleup = (-1)^{2} - 4(1)(-72) = 289$

$l_{1} = \frac{-(-1) + \sqrt{289}}{2*(1)} = 9$

$l_{2} = \frac{-(-1) - \sqrt{289}}{2*(1)} = -8$

Since the length is a positive measure, the length of the rectangle is of 9 units.

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3 years ago

What does the ratio 4: 18 represent in this situation?

andrezito [222]

Answer:

2:9 or 2/9

Step-by-step explanation:

I guess this question asks the simplest form of ratio 4:18

so I divided it by two and since they cannot be divided further that's the answer

you can either choose to write it in ratio form or fraction form that's your choice good day.

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1 year ago

Rewrite 9+7=16 using the commutative law of addition

avanturin [10]

Commutative law: a+b=b+a thats it...
So 9+7 can also be written as 7+9=16

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3 years ago

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