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Mekhanik [1.2K]
3 years ago
10

Solve for x: 1/5 (5x + 12) = 18

Mathematics
2 answers:
adelina 88 [10]3 years ago
8 0
What happens is you take 1/5 and multiply it by 5x and 12. After that you get x + 2 2/5= 18 Subtract 2 and 2/5 from birth sides of the equal sign and you get x=15 and 3/5
DENIUS [597]3 years ago
7 0
Solution for 1/5(5x+12)=18 equation:
<span>x in (-oo:+oo)

(1/5)*(5*x+12) = 18 // - 18

(1/5)*(5*x+12)-18 = 0

1/5*(5*x+12)-18 = 0

1/5*(5*x+12)-18 = 0

x-78/5 = 0

x-78/5 = 0

x-78/5 = 0 // + 78/5

x = 78/5

x = 78/5
</span>
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So, the answer is --> c.29



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3 0
3 years ago
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Use substitution to solve the system of equations.
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Bob is buying coffee for his coffee machine.Option 1 is $5.99 for 12 coffeesOption 2 is 23.99 for 70 coffee Which is the better
velikii [3]

Step 1: Let's review the information provided to us to answer the problem correctly:

• Option 1: $5.99 for 12 coffees

,

• Option 2: $ 23.99 for 70 coffee

Step 2: Let's calculate the cost of a coffee in each option, as follows:

• Cost of a coffee in Option 1 = 5.99/12 = 0.50 (rounding to the next cent): This means that every cup of coffee costs $ 0.50

• Cost of a coffe in Option 2 = 23.99/70 = 0.34 This means that every cup of coffee costs $ 0.34

Step 3: Now we can decide which is the better deal and why.

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6 0
1 year ago
Can someone help me solve this equation 5-x=12
RSB [31]
In order to solve you get x by itself:
5-x=12
-5     -5
-x=7
divide by negative 1
7 0
3 years ago
Consider the exponential function
evablogger [386]

<u>Given</u>:

The given function f(x)=19,000 \cdot 0.96 ^x which models the value of Mark’s car, where x represents the number of years since he purchased the car.

We need to determine the approximate value of Mark's car after 7 years.

<u>Value of the car:</u>

The value of the car after 7 years can be determined by substituting x = 7 in the function f(x)=19,000 \cdot 0.96 ^x, we get;

f(7)=19,000 \cdot 0.96 ^7

f(7)=19,000 \cdot 0.7514474781

f(7)=14277.502

Rounding off to the nearest dollar, we get;

f(7)=14278

Thus, the approximate value of Mark's car after 7 years is $14278.

Hence, Option a is the correct answer.

7 0
3 years ago
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