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3 years ago

A sweater is on sale for 30% off the ticketed price of $42. How much will the sweater cost after the discount?

Mathematics

2 answers:

swat323 years ago

7 0

Discount is:
$42* (30/100)= $12.60

$42 -$12.60= $29.40

The sweater will cost $29.40 after the discount~

drek231 [11]3 years ago

4 0

Discount would be $12.60
initial amount subtract discount (42-12.6)
=should be $29.4

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aleksley [76]

Answer:

The width of the border can be 9 feet or 3.5 feet.

Step-by-step explanation:

Let the width be x

Length of room = 10 feet

Breadth of room = 15 feet

Length of rug = 10-2x

Breadth of rug = 15-2x

Area of rug = $(10-2x)(15-2x)$

We are given that the area of the rug is 24 square feet.

So, $(10-2x)(15-2x)=24$ ---A

$150-20x-30x+4x^2=24$

$150-24-50x+4x^2=0$

$126-50x+4x^2=0$

$2(x-9)(2x-7)=0$

$x=9,\frac{7}{2}$

$x=9,3.5$

Substitute x =9 in A

$(10-2(9))(15-2(9))=24$

$24=24$

LHS = RHS

Substitute x = 3.5

$(10-2(3.5))(15-2(3.5))=24$

$24=24$

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So, The width of the border can be 9 feet or 3.5 feet.

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Mice21 [21]

Answer:

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3 years ago

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

coldgirl [10]

Answer:

z = -0.4.

Step-by-step explanation:

Here's the formula for finding the z-score (a.k.a. standardized normal variable) of one measurement $x$ of a normal random variable $X \sim N(\mu,\; \sigma^{2})$ :

$\displaystyle z = \frac{x-\mu}{\sigma}$ ,

where

$z$ is the z-score of this measurement,
$x$ is the value of this measurement,
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$\displaystyle z = \frac{x - \mu}{\sigma} = \frac{28.2 - 30}{4.5} = -0.4$ .

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2 years ago

The ratio of the measurement of an angle to its complement is 1:2. Find the measurement of the angle and its complement.

vodka [1.7K]

We know that these two angles are in the ratio 1:2 and add to 90 because they are complementary

So we can write the equation

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Hope this helps

3 0

3 years ago

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Lina20 [59]

Answer:

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Step-by-step explanation:

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