Algebra Answers

7x-y+z=-24
2x+2y-3z=-22
x-3y+2z=2

if a bus is travelling at a speed of 66m/h....The bus has to go to kolkata which is 720km far what will be the time taken....?BUT GIVE THE ANSWER IN Second.....

Matti wants to cover a 6 mile course in 1 hour by running part of the course and walking the rest. he also wants to make a 5-minuet stop for water. He runs at 8mi/h and walks 3mi/h.
What is the minimum distance that mattwill need to run to complete the course in 1 hour?

1 Find the value of
f(x)=x3+x2−5x+1
, when x=2
6
4
3
1
2 Evaluate the value of
f(x−2)
, if
f(x)=x2+5x+5

x2+x+4

x2−x−3

x2+2x+4

x2+x−5

Model the Earth as a sphere, and take the diameter of the Earth as 12740 km.

Calculate the circumference of the Earth.

Calculate the surface area of the Earth, and give your answer in scientific notation.

Find the point of intersection of the following two lines:

x + 4y = 9,

7x − 3y = 1

Find the values of x where the line y = −2x + 20 intersects the parabola y = 2x^2 + 3x − 22.

2 Evaluate the value of
f(x−2)
f(x−2)
, if
f(x)=x2+5x+5

Solve the following equations, giving answers as integers, surds or fractions in their simplest form.

14x − 3 = 2x + 21

1/4 (9 + x) + 10 = −3 + 1/2x

__x___ _ 2 _
x − 4 + x + 3 = 1

1 Find the value of
f(x)=x3+x2−5x+1
f(x)=x3+x2−5x+1
, when x=2
a. 6
b. 4
c. 3
d. 1