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3 years ago

A store offers 20% off all items. If x is the original purchase price, which expression represents the final price

Mathematics

1 answer:

Nikitich [7]3 years ago

7 0

Answer:

0.2x

Step-by-step explanation:

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A certain fraction is greater than 2. The denominator is 8. What must be true about the numerator?

Volgvan

Answer:

The numerator must be greater than 16

Step-by-step explanation:

We are told that a certain fraction is greater than 2. Thus, if the numerator and denominator are x and y respectively, then we have;

x/y > 2

We are further told that the denominator is 8.

Thus;

x/8 > 2

Multiply both sides by 8 to give;

x > 16

Thus,the numerator must be greater than 16.

5 0

2 years ago

Who can solve this question!!?!?

Tpy6a [65]

Answer: i cant see the picture can you send it to me please

Step-by-step explanation:

7 0

3 years ago

What is the quotient of 4.68 x 106 and 2.6 x 102 expressed in scientific notation?

zaharov [31]

Answer:

$1.8x {10}^{4}$

Step-by-step explanation:

$4.68x {10}^{6} \div 2.6x {10}^{2} \\ = (4.68 \div 2.6)x {10}^{6 - 2} \\ answer \: is \: 1.8x {10}^{4}$

3 0

2 years ago

Find the sample standard deviation:

zlopas [31]

Answer:

Step-by-step explanation:

Given the sample data 2 6 15 9 11 22 1 4 8 19, before we can get the standard deviation, we need to first calculate the mean.

mean = 2 +6 +15 +9 +11 +22 +1 +4 +8 +19/10

mean = 97/10

mean = 9.7

Standard deviation for ungrouped data is expressed using the formula;

$S = \sqrt{ \dfrac{\sum(x-\overline x)^2}{n-1} }$

$\overline x \ is\ the \ mean\\n \ is \ sample \ size$

$S = \sqrt{\frac{(2-9.7)^2+(6-9.7)^2+(15-9.7)^2+(9-9.7)^2+(11-9.7)^2+(22-9.7)^2+(1-9.7)^2+(4-9.7)^2+(8-9.7)^2+(19-9.7)^2}{10-1} }\\ S = \sqrt{\frac{(-7.7)^2+(-3.7)^2+(5.3)^2+(-0.7)^2+(1.3)^2+(12.3)^2+(-8.7)^2+(-5.7)^2+(-1.7)^2+(9.3)^2}{10-1} }\\\\S = \sqrt{\dfrac{59.29+13.69+28.09+0.49+1.69+151.29+75.69+32.49+2.89+86.49}{10-1} }\\\\\\S = \sqrt{\dfrac{452.1}{9} }\\\\S = \sqrt{50.23}\\ \\S = 7.08\\\\S \approx 7.1$

<em>Hence the standard deviation of the sample data is 7.1</em>

7 0

2 years ago

Solve for x. <br><br> 2x−45=x+4

neonofarm [45]

X would = 49 that is wat i got

3 0

3 years ago

Read 2 more answers