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3 years ago

A pair of jeans is on sale for 35% off. How much money does the customer save? Round to the nearest cent.

Mathematics

2 answers:

sesenic [268]3 years ago

5 0

Answer:

$43.74

Step-by-step explanation:

You can multiply .65 to 65.75 to find your answer.

tekilochka [14]3 years ago

4 0

Explanation:
35% off 65.75= 23.01
65.75-23.01= 42.74
Answer: The customer saves $23.01. The final price is 42.74

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Please help me with algebra part B and C. attachment below. Will mark as brainslist. 25 points.

miv72 [106K]

Answer:

C. $(-7x+60)(x+4)$

Step-by-step explanation:

Consider the expression $-7x^2+32x+240.$

First, note that

$a=-7\\ \\b=32\\ \\c=240$

Find the discriminant

$D=b^2-4ac=32^2-4\cdot (-7)\cdot 240=1,024+6,720=7,744\\ \\\sqrt{D}=\sqrt{7,744}=88$

Now,

$x_1=\dfrac{-b+\sqrt{D}}{2a}=\dfrac{-32+88}{2\cdot (-7)}=-4\\ \\x_2=\dfrac{-b-\sqrt{D}}{2a}=\dfrac{-32-88}{2\cdot (-7)}=\dfrac{60}{7}$

Write the factored form:

$-7x^2+32x+240=-7(x-(-4))\left(x-\dfrac{60}{7}\right)=(x+4)(-7x+60)$

8 0

3 years ago

A line goes through the point (6,-2) and has a slope of

Lilit [14]

Answer: a = 3

Step-by-step explanation: when you multiply 6 by -3 you get -18 and if you add 16 you get -2

so the slope is -3 and the y-intercept is 16

so a*-3 + 16 = 7

by subtracting 16 on both sides you get

-3a = -9

and to get a by itself you divide -3 on both sides

a = -9/-3

a= 9/3

a = 3

5 0

3 years ago

The volume of the box below is 1.5 cubic inches. Which of the following are possible dimensions of the box.

anygoal [31]

I’m not sure what u mean?

7 0

4 years ago

Can someone please help me with this problem please?

Svetlanka [38]

Answer:

6.86

Step-by-step explanation:

ask if you dont understand

4 0

3 years ago

A random sample of 200 shoppers at a local grocery store found that 135 of the 200 sampled

VMariaS [17]

Using the z-distribution, as we are working with a proportion, it is found that samples of 937 should be taken.

<h3>What is a confidence interval of proportions?</h3>

A confidence interval of proportions is given by:

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which:

$\pi$ is the sample proportion.

z is the critical value.

n is the sample size.

The margin of error is given by:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

In this problem, we have that:

The estimate is of $\pi = 0.675$ .

The margin of error is of M = 0.03.

95% confidence level, hence $\alpha = 0.95$ , z is the value of Z that has a p-value of $\frac{1+0.95}{2} = 0.975$ , so $z = 1.96$ .

Then, we solve for n to find the minimum sample size.

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.03 = 1.96\sqrt{\frac{0.675(0.325)}{n}}$

$0.03\sqrt{n} = 1.96\sqrt{0.675(0.325)}$

$\sqrt{n} = \frac{1.96\sqrt{0.675(0.325)}}{0.03}$

$(\sqrt{n})^2 = \left(\frac{1.96\sqrt{0.675(0.325)}}{0.03}\right)^2$

$n = 936.4$

Rounding up, it is found that samples of 937 should be taken.

More can be learned about the z-distribution at brainly.com/question/25890103

4 0

2 years ago