Answer:
Step-by-step explanation:
The submarine is underwater for 6 seconds. The submarine hits the water after 1 second and comes back up at the 7th second.
Answer: 3n must be equal to 12, however, if you are looking for the value of just the variable n, n=4.
Step-by-step explanation:
Your answer is 33.
- (PEMDAS) if there are no parentheses then multiply first. so you would do 16.5•6.67 to get 110.055 and so the same with the -4.67•16.5 to get -77.055. now, you would subtract and your equation would now be 110.055-77.055=33. hope that helps some
Using PEMDAS
9(9(7) + 12(5) + 6)
9(63 + 60 + 6)
9(129)
<span>0
Just kidding, the answer is: 1161
</span>
Answer:
a.) 
b.) 
c.) $
Step-by-step explanation:
a.) If she earns $7 'per' hour, this multiplication. After a week, we need to see how many hours she worked to earn $91, so this goes behind the equal sign. Let <em>h</em> be the unknown number of hours:

Solve for h. Divide both sides by 7:

Sylvia worked 13 hours at a rate of $7 an hour.
b.) She can work at most 15 hours a week. At 'most' can also mean less than or equal to. Let <em>h</em> be hours:

Sylvia can work less than or equal to 15 hours per week.
c.) If Sylvia can work 15 hours, plug in this value for <em>h</em> into an equation when she earns $7 per hour. Let the product of the hours and money equal <em>t</em> for total:

The most money Sylvia can earn in a week is $105.
<em>Finito.</em>