Irina predicted that she would sell 75 books, but she actually sold 95 books. Which expression would find the percent error? Use the table below to help answer the question.

Answers

Answer 1

Answer: There is no image of the table given.

Given:
approximate number = 75
exact number = 95

error = |approximate number - exact number| ÷ exact number
error = |(75-95)| / 95 = |20| / 95 = 0.21

percentage of error = 0.21 x 100% = 21%

Answer 2

Answer:

Given:

approximate number = 75

exact number = 95

error = |approximate number - exact number| ÷ exact number

error = |(75-95)| / 95 = |20| / 95 = 0.21

percentage of error = 0.21 x 100% = 21%

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Here is a picture of a math problem.

Two lines, C and D, are represented by the equations given below:Line C: y = x + 12
Line D: y = 3x + 2

Which of the following shows the solution to the system of equations and explains why?

(4, 14), because one of the lines passes through this point
(4, 14), because the point lies between the two axes
(5, 17), because both lines pass through this point
(5, 17), because the point does not lie on any axis

Answers

Bought lines need to pass same point, so:

x+12 = y = y = 3x+2
x+12=3x+2 |-2
x+10=3x |-x
10=2x |/2
5=x
x+12 = y => 5+12 = y =>y = 17

(x,y) => (5,17)

Answer:

5,17

Step-by-step explanation:

Which rule represents the translation of hexagon DEFGHI to hexagon D'E'F'G'H'I'?(x, y)→(x - 8, y - 7)

(x, y)→(x - 7, x - 8)

(x, y)→(x - 4, x - 5)

(x, y)→(x - 5, y - 4)

(adding picture in a second)

Answers

We will choose two vertices of hexagon DEFGHI and hexagon D´E´F´G´H´I´:
D ( 2, 5 ) → D´( - 6 - 2 )
E ( 5, 5 ) → E ´( - 3. - 2 )
- 6 = 2 - 8, - 2 = 5 - 7
- 3 = 5 - 8, - 2 = 5 - 7
Answer: A) ( x, y )→ ( x-8, y-7 )

Answer:

A. (x, y)→(x − 8, y − 7)

Step-by-step explanation:

Need help solving problem number 41

Answers

ok rmemeber
√(a/b)=(√a)/(√b)
and
√ab=(√a)(√b)
and
(a^m)/(a^n)=a^(m-n)
so

ignore 11 for now, we will get to that at end

$\sqrt{ (49a^(5))/(4a^(3))}$ =
$\frac{\sqrt{49a^(5))}{\sqrt{4a^(3)}}$ =
$\frac{(√(49))(\sqrt{a^(5)})}{(\sqrt{4)(\sqrt{a^(3)}}$ =
$((7)(a^(2) √(a)) )/((2)(a √(a)) )$ =
$(7a^(2) √(a) )/(2a √(a) )$ =
$(7a)/(2)$

Which is the graph of f(x)=100(0.7)

Answers

You don't have any variables... you're graphing a constant.
It's literally a straight line at 70.

It would just be a straight line sideways at 70

Please help with number 1 please ?

Answers

It's asking you to set -x and x equal to each other...

-x = x
2x = 0
x = 0.

What temperature is 15 degrees lower than seven degrees Celsius and how would you work it out

Answers

The question is asking us to find the temperature which is 15 degrees lower than seven degrees Celsius.

The mathematical symbol used for lower than is a subtraction sign that is -.

15 lower than 7 degree = 7-15 = -8.

7 and 15 have opposite sign so will be subtracted .The answer will take the sign of the bigger number.

The temperature that is 15 degrees lower than seven degrees Celsius is -8°C

To figure this out, subtract 15 from 7 and you get –8. So your answer is -8˚ C.

Hope that helps:)

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