2 years ago

Identify the type of function represented by f(x)(1)/(2)*(3)^(x)

Mathematics

1 answer:

Leokris [45]2 years ago

4 0

It’s an exponential function

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Jessica’s car depreciates in value by 11% per year. Jessica bought her car for £21000. Work out how much her car will be worth a

marishachu [46]

Answer:

Brainliest

Step-by-step explanation:

21,000 x 0.89^7 =

9,288.58032806109 = 9288.58

6 0

3 years ago

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Please help me with algebra part B and C. attachment below. Will mark as brainslist. 25 points.

miv72 [106K]

Answer:

C. $(-7x+60)(x+4)$

Step-by-step explanation:

Consider the expression $-7x^2+32x+240.$

First, note that

$a=-7\\ \\b=32\\ \\c=240$

Find the discriminant

$D=b^2-4ac=32^2-4\cdot (-7)\cdot 240=1,024+6,720=7,744\\ \\\sqrt{D}=\sqrt{7,744}=88$

Now,

$x_1=\dfrac{-b+\sqrt{D}}{2a}=\dfrac{-32+88}{2\cdot (-7)}=-4\\ \\x_2=\dfrac{-b-\sqrt{D}}{2a}=\dfrac{-32-88}{2\cdot (-7)}=\dfrac{60}{7}$

Write the factored form:

$-7x^2+32x+240=-7(x-(-4))\left(x-\dfrac{60}{7}\right)=(x+4)(-7x+60)$

8 0

2 years ago

Help please!:( <br><br> right answers only please

bagirrra123 [75]

Answer:

100 dollars a month I think

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2 years ago

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IVE BEEN STUCK ON THIS FOR AN HOUR PLEASE HELP WHAT IS 9.85714285714 X 7

dsp73

Answer:

Step-by-step explanation:

lol

4 0

2 years ago

77th term for -10,-8,-6

sasho [114]

9514 1404 393

Answer:

142

Step-by-step explanation:

The first term of this arithmetic sequence is -10. The common difference is -8-(-10) = 2. The n-th term is ...

an = a1 +d(n -1)

an = -10 +2(n -1) = 2n -12

Then the 77th term is ...

a77 = 2(77) -12 = 154 -12

a77 = 142

The 77th term is 142.

4 0

2 years ago