09/03/19

Mixture Problem

A copper alloy that is 35% copper is to be combined with an ally that is 75% copper. The result will be 750 kg of an alloy that is 60% copper. How many kg of each alloy should be used?

09/03/19

Let f be defined as follows. y = f(x) = x2 − 2x (a) Find the average rate of change of y with respect to x in the following intervals.

(a) Find the average rate of change of y with respect to x in the following intervals.  from x = 6 to x = 7     from x = 6 to x = 6.5     from x = 6 to x = 6.1     (b) Find the... more

Find the angle of elevation from John to the space shuttle

John is watching a space shuttle launch from an observation spot 8 miles away find the angle of elevation from Johnathan to the space shuttle which is at a height of 4.9 miles

09/02/19

Algebra question help

Evaluate the power, and write the result in the form a + bi. (Simplify your answer completely.)(5i)4

09/02/19

I need some help with math!!!

how do you solve this problem3 less than a number t is at most 7

Trigonometric identities

Simply the expression 1/cos(0)tan(-0)

09/02/19

Mathematical algebra related

2x^2+3x+3=0 Solve for x

Simplify the expression

1/cot^2(x) +tan(x)tan(pi/2 -x)

09/01/19

F(x)=7/x find f(x)-f(a)/x-a

Calculus 1 question about diffence quotient

09/01/19

The set of {-3,0,3} closed under subtraction

08/31/19

Hallllllllllllllp

In the diagram, each circle is divided into two equal areas and  is the center of the larger circle. The area of the larger circle is  What is the total area of the shaded regions?

08/31/19

Solve 3(x+2) + 4x-2=5x+6-2x+2(2x-1)

08/31/19

Evaluate (-161)^0

08/30/19

What is the rate of the trains?

Train A and train B leave a central station at the same time. They travel the same speed, but in opposite directions, with train A heading towards station A, and train B heading towards station B.... more

08/30/19

Let f(x)=|x|. Write a function g whose graph is a reflection in the x-axis followed by a translation 4 units to the left of the graph of f.

I would like to understand how to be able to get the answer to this question by seeing the steps that go into answering it.

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