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4 years ago

Express the product of 2x2 + 6x - 8 and x + 3 in standard form.

Mathematics

1 answer:

katrin2010 [14]4 years ago

3 0

Answer:

2x2+12x2+10x-24

Step-by-step explanation:

x(2x2+6x-8)+3(x2+6x-8)

=[2x3+6x2-8x]+[6x2+18x-24]

=2x3+6x2-8x+6x2+18x-24

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The radius of the base of a cone is 16 m. Its slant height is 28 m. What is the surface area in

11111nata11111 [884]

Answer:

704π m^2

Step-by-step explanation:

Given data

radius r= 16m

Slant height l= 28m

Required

The surface area of the cone

The expression for the surface area is given as

T.S.A=πrl+πr^2

substitute

T.S.A=π*16*28+π*16^2

T.S.A=448π+256π

T.S.A=704π m^2

Hence the T.S.A is 704π m^2

4 0

3 years ago

11. You expect to have the given amount in an account with the given terms. Find how much you can withdraw periodically in order

Orlov [11]

This is a question on Present Value of Annuity and we seek the periodic withdrawal.

$\begin{gathered} F\text{VA}=\text{PMT(}\frac{(1+\frac{i}{m})^{nm}-1}{\frac{i}{m}}) \\ \text{Therefore, PMT=}\frac{FVA}{(\frac{(1+\frac{i}{m})^{nm}-1}{\frac{i}{m}})} \end{gathered}$

where:

FVA = Future value of annuity

PMT = Periodic Withdrawal

i = interest/discount rate

n = no of years

m = no of compundings per interest period

$\text{PMT=}\frac{300000}{(\frac{(1+\frac{0.0445}{365})^{22\times365}-1}{\frac{0.0445}{365}})}=22.01$

PMT = $22.01

8 0

1 year ago

An arithmetic sequence is represented by the explicit formula A(n) = 2 +(n − 1)(− 5)

Reil [10]

Answer:

a+(n-1)d please do you get it or

8 0

3 years ago

Read 2 more answers

Add. *

mojhsa [17]

The answer is C 5.8 x 10 ml

7 0

3 years ago

Suppose that x and y very inversely. X equals -4/15 when y =-105. Write a function that models the inverse variation then find Y

dezoksy [38]

Xy = k
(-4/15)(-105) = k
28 = k
xy = 28
10y = 28
Divide both sides by 10
y = 2.8

8 0

3 years ago