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-BARSIC- [3]
3 years ago
15

Initial Knowledge Check

Mathematics
1 answer:
Law Incorporation [45]3 years ago
4 0

Answer:

Step-by-step explanation:

We first need to figure out what the equation is for this set of circumstances before we can answer any questions. We will use the equation

A(t)=P(1+r)^t which is just another form of an exponential equation where

(1 + r) is the growth rate, P is the initial investment, and t is the time in years. We will fill in the values we know first to create the equation:

A(t)=4000(1+.11)^t which simplifies to

A(t)=4000(1.11)^t

Now we'll just sub in a 1 for t and solve, then a 2 for t and solve.

When t = 1:

A(t) = 4000(1.11) so

A(t) = 4440

When t = 2:

A(t)=4000(1.11)^2 which simplifies to

A(t) = 4000(1.2321) so

A(t) = 4928.40

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Isolate a variable in each system. You may need to use the distributive property to simplify the equation. Show your work.
expeople1 [14]

Answer:

1.  x=-7/3 + 4y/3

2. x= 6- 3y/4

Step-by-step explanation:

to isolate the variable you simply solve for it by moving all the terms which don't contain x to the right by multiplying, subtracting, adding, and dividing

5 0
3 years ago
Find an equation of the line. Write the equation using function notation.
Gemiola [76]

The equation of line perpendicular to 4y = x-8 passing through (3,-3) is:

y = -4x+9

Step-by-step explanation:

Given equation of line is:

4y=x-8

We have to convert the given line in slope-intercept form to find the slope of the line

So,

Dividing both sides by 4

\frac{4y}{4} =\frac{x-8}{4}\\y = \frac{1}{4}x-\frac{8}{4}\\y = \frac{1}{4}x-2

Let m1 be the slope of given line

Then

m_1 = \frac{1}{4}\\

Let m2 be the slope of line perpendicular to given line

As we know that produt of slopes of two perpendicular lines is -1

m_1.m_2 = -1\\\frac{1}{4} . m_2 = -1\\m_2 = -1*4\\m_2 = -4

The slope intercept form of line is given by:

y = m_2x+b

Putting the value of slope

y = -4x+b

to find the value of b, putting (3,-3) in equation

-3 = (-4)(3) + b\\-3 = -12 +b\\b = -3+12\\b = 9

Putting the value of b in the equation

y = -4x+9

Hence,

The equation of line perpendicular to 4y = x-8 passing through (3,-3) is:

y = -4x+9

Keywords: Equation of line, slope

Learn more about equation of line at:

  • brainly.com/question/4837736
  • brainly.com/question/4805611

#LearnwithBrainly

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3 years ago
Hii i’ll give brainliest please help thanks :)
nadezda [96]

Answer: The median score will remain the same at 91.

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4 0
2 years ago
Can someone find x and y plz​
riadik2000 [5.3K]

Answer:

x=0, y=-3

Step-by-step explanation:

Input x=y+3 into 6x-5y=15 to get:

6(y+3)-5y=15

Solve for y

6y+18-5y=15

y+18=15

y=-3

Plug in y to get x

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3 years ago
Carbon-14 has a half-life of approximately 5400 years
Lapatulllka [165]

Answer:

Step-by-step explanation: guess

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3 years ago
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