All Questions

0

731

3

complex roots/fundamental theory of algebra help?

Hi, this is probably a really easy question but I'm kind of stuck.

Find the roots of x^4=16, and therefor find all four roots of y^4=-16.
read more ..

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Guest Oct 29, 2017

0

2862

3

+655

In the nth row of Pascal's Triangle where the first row is n, the arithmetic mean of the elements is 51.2 . What is the value of n?

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supermanaccz Oct 29, 2017

0

1324

1

The sides of a triangle are 14 cm, 48 cm and 50 cm.

The sides of a triangle are 14 cm, 48 cm and 50 cm. The perpendicular distance from the longest side to the midpoint of the shortest side is, in cm? (perpendicular to longest side)

hectictar ●

Guest Oct 29, 2017

0

816

3

Help!!!

How many of the first 100 rows contain at least one even entry and no odd entries other than

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Guest Oct 29, 2017

0

805

1

APR

Deposits of $150 per month are put into an investment plan that pays an APR of 3.8%. How much money will be in the plan after 21 years?

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Guest Oct 29, 2017

0

915

1

12 - 2x + 5 = -2 + (x-3)

hectictar ●

Guest Oct 29, 2017

0

808

2

Please Help

What is 22017 x 72017 ?

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Guest Oct 29, 2017

0

2833

2

Can someone please help me

The system of equations \[\frac{3xy}{x + y} = 5, \quad \frac{2xz}{x + z} = 3, \quad \frac{yz}{y + z} = 4\] has one ordered triple solution $(x,y,z)$. What is the value of $z$ in this solution?

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Guest Oct 29, 2017

0

2458

1

Help please

Find the ordered triple $(x,y,z)$ that satisfies the following system: \begin{align*} x-2y&=0\\ y-2z&=0\\ x+z&=5. \end{align*}

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Guest Oct 29, 2017

0

815

2

Degrees?

How many radians is -135 degrees?

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Guest Oct 29, 2017

0

808

4

'No calculator question'

Q). Write 2(to the power of 25) x 5 (to the power of 27) in standard form.
Is there a way to do this more easily without a calculator?
It's a 3 mark question so should be done in 3 minutes or so I assume?
read more ..

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Guest Oct 29, 2017

+2

2128

1

+267

domain and range question

If the function $j(x)$ is defined only on domain $[-1,2]$, and is defined on this domain by the formula $$j(x) = 2x^2+1,$$ then what is the range of $j(x)$? Express your answer as an interval or as a union of intervals.

thanks! read more ..

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WhichWitchIsWhich Oct 29, 2017

0

507

0

What?

HElp me How do i find the area of a circle?

Guest Oct 29, 2017

0

1290

1

+267

my brothers homework but he doesn't believe my answer

Dilpreet drives a distance of 120 miles in 2 hours. She stops for 1 hour to eat lunch and rest. Then she drives another 150 miles in 3 hours.
What is Dilpreet’s average driving speed, in miles per hour, during her trip?

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WhichWitchIsWhich Oct 29, 2017

0

868

1

+267

any help is appreciated!

Find the largest value of c such that -2 is in the range of f(x)=x^2+3x+c.

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WhichWitchIsWhich Oct 29, 2017

0

2136

1

+267

domain and range

Lana defines a function f(x) which is given by the formula f(x) = x^2, but only on a domain she has specified which consists of finitely many values x; she leaves the function undefined for all other x. Given that the range of f(x) is {0,1,2,3,4,5,6,7,8,9\}, read more ..

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WhichWitchIsWhich Oct 29, 2017

+1

773

1

+27

Binomial Distribution Help (URGENT)

Hello!
Can someone help me understand how to go about answering these questions for binomial distributions?

n=8, p=0.2
Find P(X=3) read more ..

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saarad0 Oct 29, 2017

+1

866

3

Quel est le plus petit nombre de quatre chiffre divisible par 2,3,10

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Guest Oct 29, 2017

0

2918

1

+267

Let A(t) = 3- 2t^2 + 4^t. Find A(2) - A(1).

Let A(t) = 3- 2t^2 + 4^t. Find A(2) - A(1).

The function f satisfies f(sqrt(x+1)) = 1/x for all $x >= -1, x does not equal 0. Find f(2).
read more ..

hectictar ●

WhichWitchIsWhich Oct 29, 2017

0

923

1

+471

Need help

In how many ways can 9 friends sit at a dinner table if two of them, Anna and Bob, insist on having exactly two people seated between them? (As usual, two seatings are considered the same if one is a rotation of the other.)

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Mr.Owl Oct 29, 2017

0

2352

1

+153

using: y=5x -4

using: y=5x -4
a. calculate the x intercept
b. graph using the x and y intercept method

hectictar ●

Tiffybean Oct 29, 2017

+1

1153

1

+153

graph: y=-2x +2 using the xy chart method (you must show your XY chart with 3 ordered pairs you find)

saarad0 ●

Tiffybean Oct 29, 2017

+1

978

1

+153

determine whether (6,-2) is a solution of Y=1/2X -5

saarad0 ●

Tiffybean Oct 29, 2017

All Questions ⁺⁰237665 Questions

complex roots/fundamental theory of algebra help?

In the nth row of Pascal's Triangle where the first row is n, the arithmetic mean of the elements is 51.2 . What is the value of n?

The sides of a triangle are 14 cm, 48 cm and 50 cm.

Help!!!

APR

12 - 2x + 5 = -2 + (x-3)

Please Help

Can someone please help me

Help please

Degrees?

'No calculator question'

domain and range question

What?

my brothers homework but he doesn't believe my answer

any help is appreciated!

domain and range

Binomial Distribution Help (URGENT)

Quel est le plus petit nombre de quatre chiffre divisible par 2,3,10

Let A(t) = 3- 2t^2 + 4^t. Find A(2) - A(1).

Need help

using: y=5x -4

graph: y=-2x +2 using the xy chart method (you must show your XY chart with 3 ordered pairs you find)

determine whether (6,-2) is a solution of Y=1/2X -5

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