3 years ago

Please help me with this 30 points

Mathematics

1 answer:

gogolik [260]3 years ago

3 0

Answer:

Step-by-step explanation:

For every 1 unit, it goes vertically 1/2

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15x – 2(4x + 1) = -9

Oksi-84 [34.3K]

Answer:

-1

Step-by-step explanation:

15x-8x-2=-9

Or, 7x=-9+2

Or, 7x=-7

Or, x=-7/7

Or, x =-1

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3 years ago

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Sally invests $5000 in an account earning 8% interest, compounded continuously. After how many years will she double her investm

juin [17]

Double is double, so you can solve
.. 2 = 1*e^(.08t)
and get the correct value of t.

Taking logs,
.. ln(2) = .08t
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3 years ago

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What is the result of subtracting the second equation from the first?

Ronch [10]

Answer:

-5x + 0y = -11

The y terms are eliminated

Step-by-step explanation:

- 4x – 2y = -2

X - 2y = 9

We want to subtract the second equation from the first

Distribute a minus sign to all the terms in the second equation

- 4x – 2y = -2

X - 2y = 9

= (-5x + 0y = -11)

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3 years ago

Please help me I am on a test

Sergeu [11.5K]

Answer:

Step-by-step explanation:

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2 years ago

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1. If p(x) = 3x + 4x² - 5x +8, find p(-2).

levacccp [35]

Step-by-step explanation:

$\small{\underline{\tt{\red{Given}}}}$

$\rightarrow$ p(x) = -2

$\small{\underline{\tt{\green{solution}}}}$

$\rightarrow$ $p(x) = 3x + {4x }^{2} - 5x + 8$

$\rightarrow$ $p( - 2) = 3( - 2) + 4( { - 2}^{2} ) - 5( - 2) + 8$

$\rightarrow$ $p( - 2) = - 6 + 16 + 10 + 8$

$\rightarrow$ $p( - 2) = 10 + 18$

$\rightarrow$ $p( - 2) = 28$

$\small\boxed{p(-2) = 28 }$

Hope it helps

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3 years ago