02/18/19

It is a fact that the area of an equilateral triangle is proportional to the square of a side. If all sides of an equilateral triangle are doubled, what happens to the area?

It is a fact that the area of an equilateral triangle is proportional to the square of a side. If all sides of an equilateral triangle are doubled, what happens to the area? 
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02/18/19

A pole casts a 4-foot shadow, and at the same time of day a 6-foot-tall man casts a 1-foot shadow. How tall is the pole?

A pole casts a 4-foot shadow, and at the same time of day a 6-foot-tall man casts a 1-foot shadow. How tall is the pole? 
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02/18/19

What is the slope of a line and what does it represent? Interpret the slope in the context of a real world situation
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02/18/19

A rectangular room is 1.8 times as long as it is wide, and its perimeter is 25 meters. Find the dimension of the room.

A rectangular room is 1.8 times as long as it is wide, and its perimeter is 25 meters. Find the dimension of the room.
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02/18/19

I am confused! Help!
It took Fran 3.6 hours to drive to her​ mother's house on Friday morning. On her return trip on Saturday ​night, traffic was​ heavier, so the trip took her 4 hours. Her average speed on Saturday... more
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02/18/19

What is the Expression
 Martina is currently 16 years older than her cousin Joey. In 5 years she will be 3 times as old as Joey If you let x represent Joey's current age, what expression can you use to represent... more
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02/17/19

. Find 𝑓′(𝑥) and simplify. = 5𝑥^−3(2𝑥^5 − 3𝑥^3 − 4)
Find 𝑓′(𝑥) and simplify. = 5𝑥^−3(2𝑥^5 − 3𝑥^3 − 4)𝑓(𝑥) = csc 𝑥 /(𝑥^3+5)
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02/17/19

Solving a word problem using a system of linear equations

one month keith rented 12 movies and 2 video games for a total of $65. the next month he rented 3 movies and 5 video games for a total of $41. find the rental cost for each movie and each video gme
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02/17/19

Finite probability help

At a university, the probability that a first year student takes an Algebra class is 0.65, the probability the student takes a Biology class is 0.30, and the probability of taking neither is 0.25.... more
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02/17/19

What is the difference in writing a quadratic equation?
The quadratic for the roots 3/7 and 10/3 is -21x2+79x-30.But is there a difference if it was written as 21x2-79x+30?
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02/17/19

round a number to 3 significant figures
Just asking why is it good to round a number to 3 significant figures?
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02/17/19

I don’t know where to put the parentheses to make it true

14 + 6 X 8 -3 + 5 = 0also 4* 8-4+3=4 Where do I put the parentheses
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02/17/19

Math - probability
ten cards are marked with letters P, R,O, P, O, R T, I, O, N respectively. Three cards are placed in a box. A card is drawn from the box. What is the probability that the card bears the letter 'O'.
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02/17/19

Any tips to solve these limits ?
Concidering that f  is continious over the interval [0;1] lim n→∞ ∫01 ( f (x) /x+n ) dxlim n→∞ ∫01 (xn f (x) ) dxlim n→∞... more
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02/16/19

Combining flours with different ratios of protein to achieve a specific result
This is an actual problem I am trying to solve while baking!flour x contains 12.7% proteinflour y contains 80% proteinhow much of each flour do you need to get 272g of flour with 14.2% protein?I... more
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02/16/19

I need help solving

A toy manufacturer needs a piece of plastic in the shape of a right triangle with the longer leg 22 cm more than the shorter leg and the hypotenuse 44 cm more than the shorter leg. How long should... more
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02/16/19

Find the are of the largest rectangle that can be inscribed in a semi-circle of radius 3
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02/16/19

Irene makes 4 2/3 cups of pancake batter.She splits the batter into 2 bowls. She mixes blueberries into 2 1/4 cups of batter and walnuts into the rest
Estimate how much of the batter has walnut in it.
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02/15/19

whats the answer??
A city has an elevation of 465 feet. Another city has an elevation of -45 feet. Which expression can be used to find the difference in their elevations?
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02/15/19

Three subtracted from c is less than or equal to 22 .
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02/15/19

A coconut falls off a tree branch that is 30 ft off the ground. The height (in ft) of the coconut as it falls is given by h=-16t^2+30.
A coconut falls off a tree branch that is 30 ft off the ground. The height (in ft) of the coconut as it falls is given by h=-16t^2+30, where t is the time in seconds since the coconut started... more
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02/15/19

What is the slope of the line 5x + y=7
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02/15/19

Juan bought 15 student and non student tickets worth 223.50 altogether. The student tickets cost 12.50 each and the non student tickets cost 18.50 each. How many of each ticket did he buy?

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02/15/19

A person in a canoe can paddle his canoe at a steady 3.6 m/s in still water...
A person in a canoe can paddle his canoe at a steady 3.6 m/s in still water. He wishes to cross a 2.8 km wide river that has a current of 1.6 m/s traveling in the northward direction.a) If this... more
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02/15/19

Probability of x's in N trys
What is the probability of two 1/10,000 events occurring within 50 attempts?
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