Mathematics

How to evaluate the function at the values -3,9, and a

f(t)=t/t+1 please simplify f(-3)= f(9)= f(a)=-f(-3) = -3/(-3 + 1) = -3/-2 = 3/2 f(9) = 9/(9 + 1) = 9/10 f(a) = a/(a + 1) :)>-Simply substitute each given t value for the function!Therefore, we ha

Mathematical problem? Probably easy.

Not my homework, just practice. Im translating this: Two pumps fill a pool in 3 hours. One pump alone would fill it in 4 hours and 20 minutes. In what time would the second pump fill the pool (alone)

Conditional Probability Problem

Could you help me untangle this,please? The book says...... Itfollows from the definition of conditional probability that P(M/C int S)=P(C int M/S) / P(C/S) Note,however,that C and S are independent s

Multiply (7 + 5i)(3 - 9i) Type answer in the form a + bi

Help :(-Remember... i = i i² = -1 i³ = -i i⁴ = 1 ===================== (7 + 5i)(3 - 9i) FOIL 21 - 63i + 15i - 45i² 21 - 48i - 45i² 21 - 48i - 45(-1) 21 - 48i + 45 66 - 48i -(7+5i)(3-9i) = 21

Help with simplifying expressions

Can someone please show me how to solve these two problems? Thanks! 1) (4)^-5/2 2) (2^-1 / 2^-2)^2-Negative exponents just mean that you put the term, with positive exponent, under 1: its like a re

How do you solve 1-sinx=3cosx

Solve for 0 please show how to do this i need to learn it-The best thing to do is make all the trig functions the same function Lets start by squaring both sides (1 - sinx)² = (3cosx)² 1 - 2sinx + si

What is the third derivative of y = cos(2θ)

First, note that d/dx cos(f(x)) = -f(x)sin(f(x)) and d/dx sin(f(x)) = -f(x)cos(f(x)), so: dy/dθ = -2sin(2θ) d²y/dθ² = -2(2cos(2θ)) = -4cos(2θ) d³y/dθ³ = -4(-2sin(2θ)) = 8sin(2θ) I hope this helps!-Y

How do you integrate : xdx / (x^4 + a^4)

take x^2 = t or 2xdx = dt or xdx=dt/2 now substitute this in ur equation := (xdx)/((x^2)^2+ (a^2)^2)= (dt/2)/(t^2 + d^2){ take a^2 =d....as because a is a constant so, dont pay too much attention to

Divide imaginary number

2 + 6i/5 + 2i Type answer in form a + bi-Do you mean: (2 + 6i) / (5 + 2i) = (2 + 6i)(5 - 2i) / (5 + 2i)(5 - 2i) = (10 - 4i + 30i - 12i^2) / (25 - 10i + 10i - 4i^2) = (10 + 26i + 12) / (25 + 4) = (22

What number is greater than zero? explain

A - (-4)^5 B - -4^5 C- (-5)^4 D - -5^4 and why do choices a and b (or c and d) have different answers? what does the parenthesis do to the sum?-So (-4)^5 = (-4)*(-4)*(-4)*(-4)*(-4)=-1024 -4^5= -1*4^5

I have a math problem

what is a possible value of a in the inequality a+8>25I know it is 18 expain the work-just work it out like a normal equation but with a greater than sign a>25-8 a>17 therefore anything greater th

Pre-Algebra help please

1) The product of two positive numbers is 5. Determine the two numbers if one is 4 more than the other. 2) The area of a rectangle is 27 square feet. Determine the length and width if the length is 3

Can anyone help me work out these indice equations? :)

(i) 27 1/3 (ii) 64 -2/3 (iii) 4 (cubed root of) 2 = 2 n/3 Would be much appreciated! Thanks :D-Hi Clo (i) 27^1/3 = 3 (ii) 64^-2/3 = 1/16 (iii) 4 (cubed root of) 2 = 2^n/3 2^2 * 2^1/3 = 2^n/3 2^(

Consider the function f(x)= 4-4x^2 , -4 <= x <= 1 (-4 less than or equal to x less than or equal to 1)

The absolute maximum value of f is _____________ and occurs at x = ________ The absolute minimum value of f is _____________ and occurs at x = ________-Abs Max=4 at x=0 , abs min=-60 at x=-4

Find the point on the line 5x+2y−7=0 which is closest to the point (−2−6).

5x + 2y - 7 = 0 2y = - 5x + 7 y = - 5/2x + 7/2 Line perpendicular passing through (- 2,- 6) Line perpendicular would have slope 2/5 y - y1 = m(x - x1) y - - 6 = 2/5(x - - 2) y + 6 = 2/5(x + 2) y + 6 =