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olga_2 [115]
3 years ago
6

What is the value of the expression below when z = 6

Mathematics
1 answer:
Oduvanchick [21]3 years ago
7 0

Answer:

81

Step-by-step explanation:

2z^2+2z-3

Using PEMDAS/BODMAS, we will have to do the exponent first, which is z^{2}.

Substitute the variable z with 6, since z = 6.

2(6^{2} )+2(6)-3

6^{2} =36.

Thus, we will get

2(36)+2(6)-3

Solve the multiplication next.

72+12-3

Finally, add/subtract the numbers:

84-3

81

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yawa3891 [41]

Answer:

I belive its 300

Step-by-step explanation:

Brainlist?

3 0
3 years ago
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I have no idea how to do this
lakkis [162]
Add them all together and you’ll get your answer



sorry if this wasn’t any help or poorly explained
8 0
2 years ago
The radius of a circle is 3 feet. What is the circle's area?
Dafna1 [17]

Answer:

6

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Would really appreciate if u could help me with all letters but even a few are great! Thanks (the graph is hard to explain so i
defon
Part A

The equation is b = 36*a or simply b = 36a

We take the size of the farm 'a' and multiply it by 36 to get the number of bushels of corn 'b'.

-----------------------------------

Part B

The 36 means there are 36 times more bushels of corn compared to the size of the farm in acres

For example, if the size is 2 acres then 
b = 36*a
b = 36*2
b = 72
yielding 72 bushels of corn

-----------------------------------

Part C

Along the first row you should have: 25 and 30 in the missing blanks (over 900 and 1080 respectively)

You find this by dividing the value of b over 36
eg: b/36 = 900/36 = 25

-------

Then along the bottom row you should have the following for the blanks: 0, 360, 1800

These values are found by multiplying the 'a' value by 36
eg: if a = 10 then b = 36*a = 36*10 = 360

-----------------------------------

Part D

Plot any two points you want from the table back in part C
So plot say (0,0) and (10,360). Then draw a straight line through those two points.

-----------------------------------

Part E

The point (30,1080) means a = 30 and b = 1080
So if the farm is 30 acres, then it can produce 1080 bushels of corn

Notice how
b = 36*a
b = 36*30 <<-- replace 'a' with 30
b = 180
And how this matches up with the fourth column of the table in part C. So you can use this part to get a hint of how to fill out the table (or at least know what one column looks like)


8 0
3 years ago
Suzie made a mistake in the following problem. The mistake was made in Line ___. Only input the number of the first incorrect li
zalisa [80]

Answer:

Mistake in Line 2

Step-by-step explanation:

Line 1  

7(6) ÷ 5 + 42  

Line 2  

7(6) ÷ 5 + 16  

Line 3  

42 ÷ 5 + 16  

Line 4  

42 ÷ 21  

Line 5  

2

To simplify any expression we use order of operation

Line 1 is 7(6) ÷ 5 + 42  

Order of operation is PEMDAS

First we start with parenthesis

so we multiply 7(6) in line 2

7*6- 42

So Line 2 is 42 ÷ 5 + 42  

Hence there is a mistake in Line 2

3 0
3 years ago
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