help me solve this I'm confused

help me solve this I'm confused

The answer is 6, but I don't understand the "why."

The sons age today. Right in expression to represent in mans age today. Then find his image if his son is now eight years old.

algebra 1 math

the sum of 5 consecutive integers is 120.

Katie, Elizabeth, and Siobhan voluenteer at the hospital. In a week, Katie volunteers 3 hours more than Elizabeth does and Siobhan volunteers 1 hour less than Elizabeth. Over 3 weeks, the number of...

The length of a rectangle is 5 centimeters less than twice it's width. The perimeter of the rectangle is 80 cm. What are the dimensions of the rectangle?

9x+18+3x=1 9x+18=-2 9x=-20 x=-20/29

Suppose you have 76 feet of fencing to enclose a rectangular dog pen. The function a=38x-x^2, where x = width, gives you the area of the dog pen in square feet. What width gives you the maximum area...

1.If I invest $10,000 at 5% compounded monthly, how much will I have in 8 years? Choose the closest answer. 2..What is the equation of a line through (-1, 4) and (-2, 7)? 3..What...

1.What the equation of the line passing through (-1, 4) and parallel to y = 2x + 1? 2.If I invest $10,000 at 5% compounded monthly, how much will I have in 8 years? Choose the closest...

what is the next number in this pattern 3,0, -3, 0, 3, 0...

A boy named Bechton would like to celebrate his birthday at a private beach. He has saved $120 for admission to the beach. Admission price is $6 for adults and $3 for children y. The beach has a rule...

Twice a number is added to the number and the answer is 80. Write an equation to solve this problem.

a city whose population is 850,000 is growing at an average rate of about 0.2% per year

The dwarf sea horse Hippocampus zosterae swims at a rate of 52.68 feet per hour. Convert this speed to inches per minute.

The instructions are not very clear about how to solve this, any help would be appreciated.

I was taking a quiz on evaluation expressions, and one of the questions asked me to evaluate 25-5e+ 3/f when e=4 and f=3. And I used PEMDAS, and multiplied 5(4), which is equal to 20. Then I divided...

1)Johnny’s mom wants to take him and some friends to the science center. It costs his mom $10 to enter and $7 per kid. Find the total using the function 𝐶(𝑓) = 10 + 7(𝑓) where 𝐶 is final cost...

at noon a train leaves Bridgton heading east at 90 mi/hr to cogsville, 450 mi away. At 12:15 P.M. a train leaves cogsville heading west to Bridgton at 100 mi/hr. At what time will they pass each other...

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