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2 years ago

What are the factors of 2(x^2+4x+21)

Mathematics

1 answer:

Keith_Richards [23]2 years ago

7 0

Answer:

that equation isn't factorable

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Help me with my math please

monitta

Answer:

Volume of a cylinder = πr²h

Given

V=81π

r=3

find h

Making h the subject

h= V/πr² = 81π/π(3)²

h= 81/9

h= 9cm

3 0

3 years ago

Read 2 more answers

El precio de un ordenador portátil ha aumentado un 25% y posteriormente fue rebajado un cierto porcentaje.Calcule que porcentaje

ZanzabumX [31]

Answer:

Se requiere un 20 por ciento de descuento.

Step-by-step explanation:

(This exercise has been presented in Spanish and for that reason explanation will be held in the same language)

Sea $p_{o}$ el precio original del computador portatil, el nuevo precio es:

$p_{1} =\left(\frac{100\,\% + 25\,\%}{100\,\%} \right)\cdot p_{o}$

$p_{1} = 1.25\cdot p_{o}$

Si $p_{2} = p_{o}$ , entonces el porcentaje requerido para recuperar el precio original es:

$r = \left(1-\frac{p_{2}}{p_{1}} \right)\times 100\,\%$

$r = \left(1-\frac{p_{o}}{1.25\cdot p_{o}} \right)\times 100\,\%$

$r = \left(1-\frac{1}{1.25} \right)\times 100\,\%$

$r = 20\,\%$

Se requiere un 20 por ciento de descuento.

5 0

2 years ago

In a shop, the original price of a coat is £50.22

iragen [17]

Answer:

A. 40.18

B. 42.80

Step-by-step explanation:

A. To find the discount price of an item multiply the price by the percentage you pay. Its discounted 20% meaning you pay 80%. Then the price of the coat is 0.8(50.22) = 40.18.

B. The sale price of a shirt is 25.68. The original price as reduced by 3/5. The original price is equal to 25.68 = 3/5x. Solve for x by multiplying by the reciprocal. 25.68 ( 5/3) = x. 42.8 = x.

4 0

2 years ago

Write an expression for the words - Divide 10 by 4 and then subtract 6.2

prohojiy [21]

(10/4) - 6.2

10 divided by 4, do that first because it's in the parenthesis, then subtract 6.2 from it.

6 0

3 years ago

Read 2 more answers

Write a cosine function that has a midline of 3, an amplitude of 4 and a period of pi.

Artist 52 [7]

Step-by-step explanation:

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