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WARRIOR [948]
3 years ago
12

Evaluate 8x-6 when x=7

Mathematics
2 answers:
V125BC [204]3 years ago
7 0

Answer:

50

Step-by-step explanation:

Wittaler [7]3 years ago
3 0

Answer:

50

Step-by-step explanation:

Substitute 7 for x into the expression 8x−6 and then simplify using order of operations.

8(7)−6

56−6

50

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Nataly_w [17]
It is a statement. 
I hope this helped!
3 0
3 years ago
Read 2 more answers
(7-4) *5/3 I need help *= multiply /= division
VMariaS [17]

Answer:

5

Step-by-step explanation:

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7 0
3 years ago
The number of girls in Mrs. Manning’s classes was 12 less than twice the number of boys. She had a total of 108 students in her
FromTheMoon [43]

40 boys and 68 girls

let's start with variables and an equation.

boys: x

girls: 2x - 12

and we know that boys and girls make up the class. so let's add the two expressions.

x + 2x - 12 = 108

3x - 12 = 108

    + 12     + 12

3x = 120

x = 40 boys

BUT x is only the number of BOYS in the class. so we have to find girls now. let's plug in our value of x into the girls' equation.

2x - 12 = # of girls

2(40) -12 = # of girls

80 - 12 = # of girls

68 girls

let's check our answer!

68 + 40 does in fact add to 108, therefore our answer is correct.

4 0
3 years ago
Can someone help me out with this?
Anton [14]

i Think all are correct not sure tho

3 0
3 years ago
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How many nanoseconds does it take for a computer to perform one calculation if it performs calculations per second?
igor_vitrenko [27]

I believe the correct question is:

6.7*10^7 calc/sec?

 

So:

1/(6.7 x 10^7) = seconds per calculation

1/(6.7 x 10^7) = 100/(6.7 x 10^9) = 14.9 x 10^-9 seconds per calculation = 14.9 ns

Which is approximately 15 ns

 

Answer:

15 ns

7 0
3 years ago
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