02/18/18

If the mass of a planet is 10% less than that of the earth and radius 20% greater than that of the earth then acceleration due to gravity on the planet will be
i need percentage 
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02/18/18

In a kite ABCD, AB = AD; BC= CD; CÂD = 40 DEGREES and CBD= 60 degrees. CALCULATE ANGLES a) BCD, b) BCA c) BAC
I would Really appreciate if anyone would be able to help me with a question like this as it is important for my upcoming test. Please reply ASAP. Thank you so much for your time and patience!
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02/17/18

such that h(t)=400−16t^2. Express t as a function of height h, and find the time to reach a height of 300 feet.
This i s a word problem asking for t(h) to be expressed as a function and find the time to reach a height of 300 feet  
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02/17/18

Linear Independence of vectors. Dont understand this solution
Show whether the following three vectors are linearly independent or not   V := C(R);  f1(x) = ex; f2(x) = e3x; f3(x) = x(x−1)   Solution:   af1 + bf2 + cf3 = 0   af1(x) + bf2(x) + cf3(x) =... more
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02/17/18

The first diffaraction minima due to single slit diffraction at 25° corresponding to the wavelength uses 5000Amstrong calculate the width of the slit
Geometrical and wave optics 
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02/16/18

Can You help solve I got 32 trying to see if I’m right
-x/2+20 is less than or equal to 4
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02/16/18

A student must have an 83% average to take algebra. I f he has and 82, 77 and 75 in the first three quarters, what is the minimum score he must earn in the 4th
We got 98 but used guess and check method which is not allowed, how else could you get 98 with out guessing.  We started at 100 and worked down.
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02/15/18

The digit 4 has a value of 4/10 in which one of the following?
A) 5.0427 B) 4.6817 C) 3.4029 D) 2.0147
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02/15/18

40% of the year 11 students are boys. Suppose there are 150 girls in year 11.
Find the total number of students in year 11, let x be the total number of students.
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02/14/18

How would you describe the steps you would take to graph a quadratic function in standard form
Please describe how. 
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02/14/18

Cliff applies a 12 N force on a 300g object. What is its acceleration?
how do you calculate acceleration? 
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02/13/18

can you help me with math please.
West of a city, a certain eastbound route is straight and makes a steep descent toward the city. The highway has a 9% grade, which means that its slope is  − 9/100. Driving on this road, you notice... more
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02/12/18

at what height above the earths surface will a rocket have half the force of gravitation on it that it would have at sea level
express answer in earth radii
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02/12/18

write the quadratic 3x^2+9x+6 in standard form (so it is clear what the vertex of the parabola would be)
write the quadratic 3x2+9x+6 in standard form (so it is clear what the vertex of the parabola would be)
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02/12/18

How do you solve Y = 3(b)+4 ?
I have a math question in rate of change and its Y = 3x + 4  Find the rate of change in y to x in x=a to x=b So it should be Y = 3(b)+4 but I don't know how to calulate that
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02/11/18

Find the equation of the circle with center at ( 5 , − 4 ) (5,-4) and passes through the point ( − 5 , − 4 ) (-5,-4).
Find the equation of the circle with center at (5,−4)(5,-4) and passes through the point (−5,−4)(-5,-4).
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02/11/18

what is equivalent to 0.00648
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02/11/18

Divide this equasion
28x7-8x4                       4x3  
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02/11/18

one zero of f(x)=2x^3-9x^2-32x-21 is x=7 . Find other zeros.
one zero of f(x)=2x^3-9x^2-32x-21 is x=7 . Find other zeros.
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02/11/18

it is asking to plot the point (3, f(3))
This is a function of x and is asking to plot this point but I am confused.
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02/11/18

Need help turning a word problem into an algebraic expression
Janine hired an engineer to do some work. The last bill, was for a total of $775. $325 was listed for parts and the rest was for labor. If the hourly rate for labor was $50, how many hours of labor... more
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02/10/18

mean=4,743. standard deviation=68. there is an interval into which approximately 95% of the observations should fall. What is the value of the upper extreme o
i want to understand this question i also want to see the work shown
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02/08/18

A number is chosen at random from 1 to 25 find the probability of selecting a number less than seven
Give ma a right answer  
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02/08/18

Gravity formula
A rock is thrown upward with a velocity of 25meters per second from the top of a 21 meter high cliff, and it misses the cliff on the way back down. When will the rock be 11 meters from the water,... more
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02/08/18

what is the answer for x-4<5
I don't understand how to solve this type of equation on a number line, I am a sixth grader.
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