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mixas84 [53]
3 years ago
15

Evaluate the expression, using the given value of the variable z÷3-5z+4 (z-2) when z=12

Mathematics
1 answer:
zvonat [6]3 years ago
7 0
12/3-5(12)+4(12-2)
pemdass
12-2=10

12/3-5(12)+4(10)
divide or multiply
12/3=4
5(12)=60
4(10)=40

we now have
4-60+40
add
-16
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Please help I don’t understand
lesya [120]

Answer:

  • 2·8·7
  • 8+2+7
  • 12·5·3
  • 3+5+12

Step-by-step explanation:

The properties of addition and multiplication allow you to rearrange and/or regroup the components of a sum or a product. That is the point of this exercise.

  (2·8)·7 = 2·(8·7) . . . . parentheses have moved: associative property

  2 + 7 + 8 = 8 + 2 + 7 . . . . order is rearranged: commutative property

  5·3·12 = 12·5·3  . . . . .  order is rearranged: commutative property

  (3 +5) +12 = 3 +(5 +12) . . . . parentheses have moved: associative property

_____

<em>Additional comment</em>

Whenever you're in doubt about the equivalence of numerical expressions, you can use your calculator to evaluate them. They will give the same result if they are equivalent. (You need a good scientific or graphing calculator that uses parentheses for this. Some seriously good calculators are available as low-cost phone apps.)

The Google search box also serves as input to the Google calculator. You can use an asterisk (*) for multiplication.

7 0
3 years ago
Please answer,it has to be done in the next 20 minutes its my homework and i forgot to do it.
Bingel [31]

Answer:

g = -2/3

Step-by-step explanation:

-g + 6 +2g = -4g - (-4)

g + 6 = -4g + 4

3g =-2

g = -2/3

3 0
3 years ago
10. If pointer 1 is spun and then pointer 2 is spun, determine the probability of landing on a color other than red on both spin
Brilliant_brown [7]

Answer:

Answer below

Step-by-step explanation:

1/8 is correct

in pic

_________________________________________

(Hope this helps can I pls have brainlist (crown)☺️)

5 0
2 years ago
Five toymakers each carved 28 blocksand 17 airplanes. Three other toymakerseach carved the same number ofairplanes and twice as
timofeeve [1]

Answer:

444

Step-by-step explanation:

28*5

17*5

17*3

56*3

add the answers

4 0
3 years ago
2 + 4 + 5 - 7 x 6 =
il63 [147K]

Answer:

-31

Step-by-step explanation:

We need to use BODMAS to figure out the answer to this extremely difficult question:

So first we need to multiply:

-7 × 6 = -42

Then we need to add:

2 + 4 + 5 = 11

Now we need to subtract:

11 - 42 = -31

8 0
3 years ago
Read 2 more answers
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