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3 years ago

Factorise: 2x² -7x -4

2 answers:

5 0

The terms in x must be 2x and x. The factors of -4 are either -4 and 1, -1 and 4, -2 and 2 or 2 and -2. Trying each of the combinations we get (2x + 1)(x - 4) as the solution.

CaHeK987 [17]3 years ago

4 0

2x-7x-4x=0.875 the answer is 0.875 cause of the fact that seven and two are the ones with the varible

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Round 854 to the nearest hundredth

Paladinen [302]

Answer:

854

Step-by-step explanation:

There is no decimals.

4 0

3 years ago

W many large

ankoles [38]

Answer:

Step-by-step explanation:

40 / 7.50 = 5.3 recurring

Seeing as you can't buy 0.3 of a pizza, we just use the 5

8 0

3 years ago

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Find the gradient of the function at given point. f(x,y)=ln(x^2+y^2)

N76 [4]

$\nabla f(x,y)=\left\langle\dfrac{\partial f}{\partial x},\dfrac{\partial f}{\partial y}\right\rangle=\left\langle\dfrac{2x}{x^2+y^2},\dfrac{2y}{x^2+y^2}\right\rangle$

You didn't provide the "given point", but I assume you're capable of plugging it in.

5 0

3 years ago

I need help this is urgent!!

harina [27]

If you need an equation it is -3.4x=21.5

You simply divide both sides by -3.4 to get x=-6.32

if that's not right then just get on a calculator and calculate by doing what I said to divide

7 0

3 years ago

There's a piece of a pyramid is a rectangle with a width of 4.6 cm and the length of the 9 cm. What is the height in centimeters

Dominik [7]

Answer:

6cm

Step-by-step explanation:

Given data

Width= 4.6cm

Length= 9cm

Volume= 82.8cm^3

The expression for the volume is given as

V= lwh/3

82.8= 9*4.6*h/3

cross multiply

82.8*3= 9*4.6*h

248.4= 41.4h

h= 248.4/41.4

h= 6cm

8 0

3 years ago