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kumpel [21]
3 years ago
9

Why did this app make me fail my test?

Mathematics
2 answers:
Dvinal [7]3 years ago
5 0
Not everyone is always right.
Yuki888 [10]3 years ago
4 0
Probably because people gave you the wrong answer. Not saying they did this intentionally....
You might be interested in
Find the area of the figure below, formed from a triangle and a rectangle, in square centimeters.
Brilliant_brown [7]

Answer:

960

Step-by-step explanation:

2*10*6*8

2*10=20*6=120*8=960

3 0
3 years ago
If (x) = 3x + 1 and f ^1- = x-1/3 <br> help pls
GREYUIT [131]

Answer:

I hope it's helpful for you

7 0
3 years ago
Can someone help me with part b?
Tema [17]

Step-by-step explanation:

the average rate of change of a function f in an interval [x-low, x-high] is

(f(x-high) - f(x-low)) / (x-high - x-low)

the year 2000 means t = 2000-1980 = 20

the year 2015 means t = 2015-1980 = 35

so, we have

(A(35) - A(20)) / (35 - 20)

((-0.6(35)² + 37.2×35 + 243) - (-0.6(20)² + 37.2×20 + 243)) / 15

((-735 + 1302 + 243) - (-240 + 744 + 243)) / 15

(810 - 747) / 15 = 63/15 = 4.2

the average change rate between 2000 and 2015 is 4.2.

that means that the use of nuclear energy in the USA increased by 4.2 billions of kilowatt hours per year during that period.

3 0
3 years ago
If anyone can help me out I would truly appreciate it <br> Please show me step by step
wel

Answer:

5

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

0.3y + y/z

<em>y</em> = 10

<em>z</em> = 5

<u>Step 2: Evaluate</u>

  1. Substitute in variables:                                                                                     0.3(10) + 10/5
  2. Multiply:                                                                                                             3 + 10/5
  3. Divide:                                                                                                               3 + 2
  4. Add:                                                                                                                   5
3 0
3 years ago
3)
hram777 [196]

Answer:

D: x < 20

Step-by-step explanation:

-4x + 16 > -64

subtract 16 from both sides because you must isolate x.

-4x + 16 - 16 > -64 - 16

-4x > -80

Then divide -4 on both sides... I believe that when you divide a number by a negative number you must flip the sign...

-4x/ -4 < -80/ -4

        x < 20

(negative divided by a negative will result in a POSITIVE.)

Hope this helped... I truly apologize if this is wrong..

3 0
3 years ago
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