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A word problem with three variables 2020-10-18
From Yesenia:
Carmen, Austin, and Trey have a total of $128 in their wallets. Trey has $10 more than Carmen. Austin has 4 times what Trey has. How much do they have in their wallets?
Answered by Penny Nom.
A confusing problem 2020-10-01
From Kgaugelo:
a triangle has the vertices A(-4;-3),B(x;y)and C(2;1). Determine the coordinates of B if the equation of the line BC is y=5x-9
Answered by Harley Weston.
A combination lock 2020-09-29
From Rourke:
how many possible combinations are there in a 4 digit lock with 6 numbers which can repeat themselves.
Answered by Penny Nom.
Factoring an interest formula 2020-09-29
From Kenneth:

P + Pr has a common factor of P so it can be expressed as P(1 + r) after the P is factored out.. How does the "P" get in front of (1 + r)?

P/P + Pr/P = 1 + r What step is used to show that P is added in front of (1 + r)?

I thank you for your reply.

Answered by Harley Weston.
Is -1 an odd integer? 2020-09-27
From Nicole:
is -1 an odd integer?
Answered by Penny Nom.
The height of a tree 2020-09-27
From Kerissa:
A man height 1.2 m standing on top of a building 34.6m high views a tree some distance away he observes that the angle of depression of the base of the tree is 35 and the angle of depression of the top of the tree is 29, assuming that the tree stands of level ground. Determine the height of the tree.
Answered by Penny Nom.
A Parabolic Arch 2020-09-21
From Malen:
A hotel entrance makes a parabolic arch that can be represented by the quadratic function, y= -x^2-8x+24, where y is the height of the arch and x is the distance from wall to wall in the feet. What is the distance between the two walls of the arch.
Answered by Harley Weston.
my prcentage of years on earth is 2020-09-21
From Bill:
This Tuesday is my birthday and I will be 69. and I just wanted to know life ear is say earth is 6 billion years old I'm just curious to what percentage does my existence on earth reptresent I do realize that it's a flash in the pan
Answered by Penny Nom.
A problem involving distance, time, and rate. 2020-09-15
From Ruby:
Amy drove on the highways at 70 miles/hour to pick up fruits from her grandma’s garden in the morning.
She stayed there for two hours. When coming back in the afternoon, she drove on the local roads at 40 miles per hour to avoid traffic.
She spent a total of 8 hours for this trip, and drove a total 300 miles.
How many miles did she drive each way?

Answered by Penny Nom.
The surface area of a dome 2020-09-13
From Sue:
i need to know the outside square footage of a dome house 24ft across at the bottom and 16ft high so i know how much paint it will take to cover it.
Answered by Harley Weston.
9 games with 3 possible outcomes 2020-09-13
From Daniel:
I’d like to know how many different outcomes would be in a Soccer week played if there is 9 different games 2 teams and 3 outcomes Win, tie or lose

Thank you

Answered by Penny Nom.
Simultaneous equations 2020-09-05
From Paa:
find the value of each letter

Answered by Penny Nom.
Slope 2020-09-04
From Mark:
I'm trying to calculate slope over 157'.I have a drop of 9 1/8 inches. What fraction of an inch of fall do I have every 10 feet
Answered by Penny Nom.
The angular speed of a wheel 2020-09-03
From Catrina:
A car is moving at a rate of 75 miles per hour, and the diameter of its wheels is 2.6 in. Find the angular speed of the wheels in radians per minute.
Answered by Penny Nom.
Bearings 2020-08-30
From Tom:
A boy walks 5km due North and then 4km due East
I. Find the bearing of his current position from his starting point
II. How far is the boy now from the starting point

Answered by Penny Nom.



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