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3 years ago

7

Subtract the polynomials: (2x2 + 2x + 3) - (x2 + 2x + 1). Enter your answer as a polynomial in descending order below, and use t

he caret (^) for exponents. For example, you would write 4x2 as 4x^2.

1 answer:

WARRIOR [948]3 years ago

8 0

Answer:

im pretty sure its 2x^3

Step-by-step explanation:

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Algebra 1 - which equation represents exponential growth?

Nataly_w [17]

Answer:

d. y =5(1.06)^x

Step-by-step explanation:

growth formula is

y = (1+r)^t

1+r has to be greater than 1

mustangps

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2 years ago

Type the correct answer in the box. x y 3 10 20 In the table, the relation (x, y) is not a function if the missing value of x is

yan [13]

The relation is <em>not a function</em> if any x-value is repeated.

Assuming you have

(x, y) = (3, 10), (__, 20)

if x = 3, the relation is not a function.

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3 years ago

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What is the equation of the line that is perpendicular to y= -3x + 1 and passes through (2,3)?

Aleonysh [2.5K]

Answer:

$\large\boxed{y=\dfrac{1}{3}x+2\dfrac{1}{3}}$

Step-by-step explanation:

$\text{Let}\ k:y=_1x+b_1\ \text{and}\ l:y=m_2x+b_2.\\\\l\ \perp\ k\iff m_1m_2=-1\to m_2=-\dfrac{1}{m_1}\\============================\\\\\text{We have}\ y=-3x+1\to m_1=-3.\\\\\text{Therefore}\ m_2=-\dfrac{1}{-3}=\dfrac{1}{3}.\\\\\text{The equation of the searched line:}\ y=\dfrac{1}{3}x+b.\\\\\text{The line passes through }(2,\ 3).$

$\text{Put the coordinates of the point to the equation.}\ x=2,\ y=3:\\\\3=\dfrac{1}{3}(2)+b\\\\3=\dfrac{2}{3}+b\qquad\text{subtract}\ \dfrac{2}{3}\ \text{from both sides}\\\\b=2\dfrac{1}{3}$

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3 years ago

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What is the equation of the line that passes through the point (-8,2) and had an undefined slope

Basile [38]

Answer:

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Step-by-step explanation:

x=-8..Y=2

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3 years ago

Use the law of cosines to find the length of a

borishaifa [10]

Answer:

Step-by-step explanation:

You don't need the Law of Cosines, the Law of sines if what you need. You can't use the Law of Cosines because in order to find side a, you would need the length of side c and you don't have it. Using the Law of Sines is appropriate, knowing that angle B = 55:

$\frac{sin55}{175}=\frac{sin42}{a}$ and solving for a:

$a=\frac{175sin42}{sin55}$ so

a = 143.0

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2 years ago