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Kay [80]
3 years ago
13

Find f(-2) if f(x)=4x^2+3x-5

Mathematics
1 answer:
valentina_108 [34]3 years ago
3 0

Answer:

f(-2) = 5

Step-by-step explanation:

To find f(-2), plug in -2 wherever there is an x.

f(x) = 4x² + 3x - 5

f(-2) = 4(-2)² + 3(-2) - 5

f(-2) = 4(4) + 3(-2) - 5

f(-2) = 16 - 6 - 5

f(-2) = 10 - 5

f(-2) = 5

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Hiran invests 20 000 rupees in an account for 3 years at 1.5% per year compound interest.
svp [43]

Answer:

There will be 20 914 rupees in the amount at the end of 3 years.

Step-by-step explanation:

The amount of rupes after t years in compound interest is given by:

A(t) = A(0)(1+r)^{t}

In which A(0) is the initial amount and r is the interest rate, as a decimal.

Hiran invests 20 000 rupees in an account for 3 years at 1.5% per year compound interest.

This means that A(0) = 20000, r = 0.015. So

A(t) = A(0)(1+r)^{t}

A(t) = 20000(1+0.015)^{t}

A(t) = 20000(1.015)^{t}

Work out the total amount of money in the account at the end of 3 years.

This is A(3). So

A(3) = 20000(1.015)^{3} = 20913.6

Rounding to the nearest rupee.

There will be 20 914 rupees in the amount at the end of 3 years.

8 0
3 years ago
Help me please what do they mean?
gogolik [260]
Ask google it will help alot
6 0
3 years ago
Tickets for the school play sell for $4 each. Which graph shows the relationship between the number of tickets solo
Xelga [282]

Answer:

I do not see all the graphs but it would be the reverse of what is shown for A. graph. The tickets sold to total income would have to be a 1:4 ratio where every 4 dollar leap in the y-axis is a one point (1 unit change in x).

Step-by-step explanation:

8 0
3 years ago
To write 11x^2+17x-10 in factored form, Diego first listed pairs of factors of -10.
Liono4ka [1.6K]
(11x+10)(x+-1)
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3 years ago
in 2003 the state pension was increased by 2% to £78.03. What was the state pension before this increase?
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I dont know for Sure but i think it is
76.4694 (or Rounded 76.47)
6 0
3 years ago
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