The correct equation that can be used to determine Mario’s present age is:
x + 7 = 19
This equation represents that in 7 years, Mario's age (x + 7) will be 19 years old.
Mario’s present age? (1 point)
x − 7 = 19
x + 7 = 19
x − 19 = 7
x + 19 = 7
9 answers
The correct equation that can be used to determine Mario’s present age is:
x + 7 = 19
This equation represents that in 7 years, Mario's age (x + 7) will be 19 years old.
To determine the number of hours, \( h \), that Maria still needs to spend to complete her community service program, the correct equation is:
h + 3 \( \frac{3}{4} \) = 5 \( \frac{1}{2} \)
This equation represents that the total hours needed to complete her service program (the hours she still needs, \( h \), plus the hours she has already worked, \( 3 \frac{3}{4} \)) equals the total required hours \( 5 \frac{1}{2} \).
To determine the amount of money you had in your piggy bank before buying the toy, the correct equation is:
p - 13.32 = 25.70
This equation represents that the amount of money you had in your piggy bank (p) minus the cost of the toy ($13.32) equals the amount of money you had left ($25.70).
Now, let's solve for \( p \):
\[ p - 13.32 = 25.70 \]
Adding \( 13.32 \) to both sides gives:
\[ p = 25.70 + 13.32 \]
Calculating the right side:
\[ p = 39.02 \]
Therefore, there was $39.02 in the piggy bank before buying the toy.
To determine the number of balloons Alexa popped, the correct equation is:
n + 5 = 13
This equation states that the number of balloons Alexa popped (n) plus the number of balloons Krista popped (5) equals the total number of balloons popped (13).
Now, let's solve for \( n \):
\[ n + 5 = 13 \]
Subtracting 5 from both sides gives:
\[ n = 13 - 5 \]
Calculating the right side:
\[ n = 8 \]
Therefore, Alexa popped 8 balloons.
To determine the water level \( w \) of the dam last month, the correct equation is:
w − 8.8 = 95.3
This equation indicates that the water level last month (w) minus the decrease in water level (8.8 meters) equals the current water level (95.3 meters).
Now, let's solve for \( w \):
\[ w - 8.8 = 95.3 \]
Adding 8.8 to both sides gives:
\[ w = 95.3 + 8.8 \]
Calculating the right side:
\[ w = 104.1 \]
Therefore, the water level of the dam last month was 104.1 meters.