the owner of the store buys calculator for $12. If she marks the up by 30% at what price does she sell them?

Answer:

5 hrs math : 8 total hrs

Step-by-step explanation:

5 + 2 + 1 = 8 hours total

Answer:

x² + y² is equal to = (4 / 81)(845m² + 78m + 18)

Step-by-step explanation:

We first need to get the values of x and y, which can be done using a system of equations, substituting one of the two functions into the other:

Given:

y = 2x + 2

3x + 3y = 26m

Then:

3x + 3(2x + 2) = 26m

3x + 6x + 6 = 26m

9x + 6 = 26m

9x = 26m - 6

x = (26m - 6) / 9

Now we can solve for y:

y = 2x + 2

y = 2(26m - 6) / 9 + 2

y = 2(26m - 6) / 9 + 18 / 9

y = (52m - 12 + 18) / 9

y = (52m + 6) / 9

Now we can sum up their squares:

x² + y²

= ((26m - 6) / 9)² + ((52m + 6) / 9)²

= (676m² - 312m + 36) / 81 + (2704m² + 624m + 36) / 81

= (3380m² + 312m + 72) / 81

= (4 / 81)(845m² + 78m + 18)

Answer:

1/5

Step-by-step explanation:

[tex]5^{-x}= 25\\\\5^{0.5x) = (5^{-x})^{-0.5}\\\\=(25)^{-0.5}\\\\=(25)^{\frac{-1}{2}}\\\\=(\sqrt{25})^{-1}\\\\=5^{-1}\\\\= \frac{1}{5}[/tex]

Answer:

13/20

Step-by-step explanation:

Probability is the ratio of the number of possible outcome to the number of total outcome.

Given that for the past 60 days, on 39 of those days she arrived at work before 8 AM while for the rest of those days she arrived after 8:30 AM, the probability that she will arrive at 8 AM on the next day she goes to work

= 39/60

= 13/20

In decimal, this will be expressed as 0.65 and 65% in percentage.

Answer:

the fact that people who conform generally do not run the risk of being ostracized by their peers

Step-by-step explanation:

Answer: yes, she can

Step-by-step explanation:

10:13 (ratio) = 0.769

3 (pounds) x 0.769 (ratio) = 2.307 (dollars)

5 (hours) x 2.307 (dollars) = 11.35

Answer: 14 nickels and 18 quarters.

Step-by-step explanation:

Let x = Number of nickels , y = Number of quarters

As per given , we have

x+ y= 32            (i)

0.05x+0.25y= 5.20              (ii)

Multiply (ii) by 4 , we get

0.2x+y = 20.8          (iii)

Subtract (iii) from (i) , we get

0.8x = 11.2

[tex]\Rightarrow\ x=\dfrac{11.2}{0.8}\\\\\Rightarrow\ x = 14[/tex]

Put value of x in (i) , we get

y =32-14 = 18

Hence, we have 14 nickels and 18 quarters.

Answer:

Step-by-step explanation:

3x-6=4x+8

-8-6=4x-3x

-14=x

Answer:

x = -14

Step-by-step explanation:

3(x - 2) = 4x + 8

~Distribute left side

3x - 6 = 4x + 8

~Add 6 to both sides

3x = 4x + 14

~Subtract 4x to both sides

-x = 14

~Divide -1 to both sides

x = -14

Best of Luck!

Answer:

D: There is not enough information to determine what type of correlation exists between the variables in this data set.

Step-by-step explanation:

as if you were to place all these dots unto a graph the data will be unclear as they're too scattered to come to a conclusion if it's positive or negative

Answer:

[tex](5y+2z)(y-4)[/tex]

Step-by-step explanation:

[tex]5y^2-20y-8z+2yz=\\5y^2-20y+2yz-8z=\\5y(y-4)+2z(y-4)=\\(5y+2z)(y-4)[/tex]

Answer:

22

Step-by-step explanation:

Answer:

19

Step-by-step explanation:

Answer:

38 multiplied by 50/100 equals 19

Step-by-step explanation:

just multiply 38 and 50 then over 100 and divide then you should get 19

Answer:

0

Step-by-step explanation:

Answer:

undefined

Step-by-step explanation:

The for9-8mula for slope is [ y2-y1/x2-x1 ].

7-12/-8-(-8)

-5/0

Since the denominator is 0, the slope is undefined.

Best of Luck!

Answer:

Just add the painted miles

2 1/6 + 1 2/3

=3 5/6

then we subtact the total miles that wanna be painted which is 6

6 - 3 5/6

=2 1/6

The answer B

Answer:

y-9 = -1/12(x-8)

Step-by-step explanation:

To write an equation of a line perpendicular to the graph of y = 12x-3 and passing through the point, we will follow the following steps.

The standard form of point-slope form of the equation of a line is  given as

y − y1 = m(x − x1),

m is the slope of the unknown line

(x1, y1) is a point on the line.

Step 1: We need to calculate the slope of the known line first,

Given y = 12x-3

from the equation, m = 12 on comparison.

Step 2: get the slope of the unknown line. since the line given is perpendicular to the line y = 12x - 3, the product of their slope will be -1 i.e Mm = -1

M = -1/m

M is the slope of the unknown line

M = -1/12

Step 3: We will substitute M = -1/12 and the point (8, 9) into the point-slope form of the equation of a line i.e y − y1 = M(x − x1),

M = -1/12, x1 = 8 and y1 = 9

y-9 = -1/12(x-8)

The ratio 22:7 represent the value of π.

The correct option is D.

The ratio is a numerical relationship between two values that demonstrates how frequently one value contains or is contained within another.

Given:

An expression: π

The value of π is 22/7.

In the ratio form the value is,

22:7.

Therefore, the ratio is 22:7.

To learn more about the ratio;

https://brainly.com/question/13419413

#SPJ2

Answer:

20

Step-by-step explanation:

if she has 13 flowers and adds 7 more that is 20 because 13+7=20

Answer:

20 yes

Step-by-step explanation:

80÷4=20 there are 4 sides to a square

Answer:

68 degrees fahrenheit

Step-by-step explanation:

Answer:

68 degrees Fahrenheit

Step-by-step explanation:

I hope this helps you out with your question! Can you plz consider marking me brainliest and thanks! Plz tell me how the answer was! It feel nice to be appreciated! Comment /free for a giveaway entry of 20 thanks and 2 brainliest. Have an awesome day! Let me know if you have any questions! -KaraYeaton18

Answer:

5x+6=21 is the same as 15+6=21

Step-by-step explanation:

hope this is what you wanted :)

Answer:

Step-by-step explanation:

An electrician needs 2 rolls of electrical wire to wire each room in a house. How many rooms can he wire with 2/3 of a roll of wire? HEL

An electrician needs 2 rolls of electrical wire to wire each room in a house. How many rooms can he wire with 2/3 of a roll of wire? HEL

An electrician needs 2 rolls of electrical wire to wire each room in a house. How many rooms can he wire with 2/3 of a roll of wire? HEL

An electrician needs 2 rolls of electrical wire to wire each room in a house. How many rooms can he wire with 2/3 of a roll of wire? HEL

We can write an equivalent expression by factoring this polynomial.

Since the GCF for these terms is 5, we can factor out a 5.

That leaves us with each term divided by 5 inside the parenthses.

So we have 5(x + 3).

Step-by-step explanation:

Answer:

The quadrilateral is a trapezoid

Step-by-step explanation:

Answer: -4009

Step-by-step explanation: hope this helps!

Answer:

-4009

- I'm not 100% sure but if you want to double check you can use a website like M4thw4y (the 4's stand for a's) for help. Hope this helps.

Answer:The top half is counting by 3s so you could do that and the answers for the bottom is 36 and then 48

Step-by-step explanation:

Answer:

3,  6,  9, 12, 15

12,24,36,48,60

Step-by-step explanation:the top row is going upby 3 and the second row by 12