All categories

4 years ago

What is $28 with 40% off before tax

Mathematics

1 answer:

Flura [38]4 years ago

5 0

Amount Saved (Discount): $11.2
<span>Sale / Discounted Price: $16.8</span>

You might be interested in

Find the area of a circle with radius of 7

zubka84 [21]

Answer:

-The area of a circle:

$A \approx 153.938$

$A \approx 153.94$ (Rounded to nearest hundredth if needed)

Step-by-step explanation:

-Use the formula to find the area of a circle:

$A = \pi r^2$

-After you have the formula set up, use the radius for the formula:

$A = \pi 7^2$

-Then, you solve the formula:

$A = \pi \times 7^2$

$A = \pi \times 49$

$A = 49\pi \approx 153.938$

-Round up to the nearest hundredth (if needed):

$A \approx 153.94$

4 0

3 years ago

An appliance manufacturer stockpiles washers and dryers in a large warehouse for shipment to retail stores. Sometimes in handlin

Over [174]

Answer:

This is strong evidence that more than 2% get damaged

Step-by-step explanation:

The company goal is to keep the proportion of damaged machines below 2%

$H_o: p = 0.02$

$H_a: p > 0.02$

One day an inspector randomly checks 66 washers and finds that 6 of them have scratches or dents

So, x = 6

n = 66

$\widehat{p}=\frac{x}{n}$

$\widehat{p}=\frac{6}{66}$

Formula : $z=\frac{\widehat{p}-p}{\sqrt{\frac{p(1-p)}{n}}}$

$z=\frac{\widehat{p}-p}{\sqrt{\frac{p(1-p)}{n}}}$

$z=\frac{\frac{6}{66}-0.02}{\sqrt{\frac{0.02(1-0.02)}{66}}}$

$z=4.114$

So, the value of test statistic is 4.114

2) What is the P-value of the test statistic?

So, p value using calculator = .00002

p value < α

So, we accept the alternate hypothesis

So, This is strong evidence that more than 2% get damaged

8 0

3 years ago

Multiplication to find ratios that are equivalent to 4:5

Sindrei [870]

Answer:

You can multiply 4 and 5 by a number, and it will be equivalent.

Let's use the number 3.

4 x 3=12

5 x 3=15

So, it will be 12:15

8 0

3 years ago

Find the solution to 3 ^-x = x^ 3 + x to the nearest tenth.

galben [10]

We can rewrite this by subtracting the right side to get

... 3^(-x) -x^3 -x = 0

A graphing calculator shows this to have a solution near x=0.5.

_____

There are no algebraic means for solving such a combination of exponential and polynomial functions.

6 0

3 years ago

Combine like terms to simplify the expression: 9 + 3b − 1 + 7b − 2 = ______ 9 − 10b 6 + 10b 8 + 10b 16b 9 + 10b

Travka [436]

Answer:6 +10b

Step-by-step explanation:

Like terms 9-1-2 =6 and 3b + 7b = 10b

6 0

3 years ago