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ruslelena [56]
3 years ago
8

Which step(s) are errors is it step 1 step 2 step 3 step4 or step 5?

Mathematics
2 answers:
blondinia [14]3 years ago
5 0

Answer:

Step 1

Step-by-step explanation:

c is not -6. Because the equation equals 6, we will add 6 to both sides to set it equal to zero, which will make c=0

nikitadnepr [17]3 years ago
3 0

Answer:

Step 1, and step 5

Step-by-step explanation:

The end of the equation has to equal 0, so c can not be -6 but instead -12.

They forgot about the 4 +/- the square root of 40 in the last step.

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Help me pls need help​
Kitty [74]

Answer:

Step-by-step explanation:

I hope this helps answer your question(s). Please mark brainliest.

4 0
2 years ago
The sum of all three numbers is 12. The sum of twice the first number, 4 times the second number, and 5 times the third number i
DaniilM [7]

Answer:

The numbers are 7, 4 and 1

Step-by-step explanation:

Let the numbers =x, y, z.

The sum of all three numbers is 12, x+y+z=12--------i

The sum of twice the first number, 4 times the second number, and 5 times the third number is 35, 2x+4y+5z=35-------ii

The difference between 8 times the first number and the second number is 52, 8x-y=52---------iii

Now, from (i),z =1-x-y--------iv

substitute (iv) in (ii),

2x+4y+5(12-x-y)=35

2x+4y+60-5x-5y=35

collect like terms

-3x-y=-25

that is, 3x-y=25--------v

solving (iii) and (v) simultaneously (add iii and v), we have

11x=77

divide both sides by 11 to obtain x=7

Put x=7 in (v)

3(7)+y=25

21+y=25

implies y=25-21=4

put x=7 and y=4 in (iv)

z=12-7-4=1

Hence, the numbers are 7, 4 and 1.

4 0
2 years ago
My number had a tens digit that is 8 more than the ones digit. Zero is not one of my digits
marin [14]

The tens digit is 8 more than the ones digit. There isn't any zeros.

The maximum digit is 9 because 10 would be 2 digits, 1 and 0.

So say the tens digits is 9.

9 _

The ones digit is 8 less so 9-8 = 1

9 1

There isn't any zeros which is correct.

The answer is 91.  

4 0
2 years ago
Calculate the value of x
Katena32 [7]

Answer:

22⁰

Step-by-step explanation:

By angle sum property :

x + 127 + 31 = 180⁰

x = 180 - 158

x = 22⁰

3 0
3 years ago
Read 2 more answers
What is the simplified form of the quantity of x plus 7, all over the quantity of x plus 3 + the quantity of x minus 4, all over
allochka39001 [22]

\frac{3x + 21}{4x + 5}
3 0
3 years ago
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