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klio [65]
3 years ago
12

Twice the sum of a number and negative two is sixteen. find the number

Mathematics
2 answers:
dexar [7]3 years ago
5 0
It would be 9 because 2x9=18. Then 18+-2=16.
Anestetic [448]3 years ago
3 0
N is the number
2(n-2)=16
divide both sides by 2
n-2=8
add 2 to both sides
n=10

the number is 10
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Can someone help me with this??
dusya [7]

Answer:

Carlos and Pamela drove 120 miles on the first day, 240 miles on the second day, and 290 miles on the third day.

Step-by-step explanation:

Let x be the number of miles driven on the first day.

Then they drove twice as many miles, or 2x on the second day

and 50 miles more than the second day's, so 2x + 50

The total is 650 across all three days, so we'll take the sum.

x + 2x + (2x + 50) = 650

Combine like terms on the left

5x + 50 = 650

Subtract 50 on both sides

5x = 600

Divide by 5 on both sides

x = 120

Check work:

120 + 2(120) + 2(120) + 50 = 650

120 + 240 + 240 + 50 = 650

600 + 50 = 650

650 = 650

So they drove 120 miles on the first day

2*120 = 240 miles on the second day

and 2*120 + 50 = 240 + 50 = 290 miles on the third day

4 0
3 years ago
How do I solve this equation
netineya [11]
This should be correct I am sorry if it is not.
<span>-0.01511422733</span>
8 0
3 years ago
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Use the definition of continuity to determine whether f is continuous at a. f(x) = 5x+5 a = -5 Question
Andrej [43]

ANSWER

lim_{x \to  - 5}(f(x))  = f( - 5)

EXPLANATION

If f(x) is continuous at

x = a

Then,

lim_{x \to a}(f(x))  = f(a)

The given function is

f(x) = 5x + 5

f( - 5) =  5( - 5) + 5

f( - 5) =  - 25 + 5 =  - 20

lim_{x \to  - 5}(f(x))  = 5( - 5) + 5

lim_{x \to  - 5}(f(x))  =  - 20

Since,

lim_{x \to  - 5}(f(x))  = f( - 5)

The function is continuous at

x =  - 5

4 0
3 years ago
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Rama09 [41]

Answer:

1.4

Step-by-step explanation:

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3 0
2 years ago
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9 – 2x = 19<br> What is x
iren2701 [21]

9-2x=19

or,-2x=19-9

or,-2x=10

or,x=10/-2

therefore,

x=-5

6 0
3 years ago
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