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Whitepunk [10]
2 years ago
9

Mark and his brother David are fighting over a toy airplane while playing their yard. Mark grabs the plane and takes off running

at rate of 7.5 miles per hour. One minute after Mark starts running, David starts to chase him at rate of 9mph. How long will David to reach Mark and how far will they have run?
Mathematics
1 answer:
-BARSIC- [3]2 years ago
5 0
David will have 2.57 seconds to get to mark and it’s 50 meters
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Rewrite the following quadratic functions in intercept or factored form. Show your work.
Dmitry [639]

<u>Answer: </u>

f(x) = 3(x+2)(x-2)

<u>Step-by-step explanation: </u>

We are given the following the quadratic function and we are to rewrite it in intercept or factored form:

f(x) = 3x^2 - 12

We can factorize the given function so taking the common factors out of it to get:

f(x)=3x^2 - 12

f(x) = 3 (x^2 - 4)

The term (x^2-4) is in the form a^2-b^2 so it can further be factorized to give:

f(x) = 3 (x+2)(x-2)

Therefore, the factored form of the given quadratic function is f(x) = 3(x+2)(x-2).


7 0
2 years ago
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Does anyone know this?
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The answer will be t=2.50g I think
8 0
2 years ago
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Noah was assigned 64 cookies for the bake sale. He mad 125% of that number. 90% of the cookies he made were sold. How many of No
Mice21 [21]
Noah made 80 cookies and sold 72. This means that 8 cookies were left.
5 0
2 years ago
two variables that move in opposite directions are: a. said to have a positive correlation. b. called independent variables. c.
Lapatulllka [165]

Two variables that move in opposite directions are said to be inversely related.

A negative correlation is a relationship between two variables that move in opposite directions. In other words, when variable A increases, variable B decreases. A negative correlation is also known as an inverse correlation.

The concept of negative correlation is important for investors or analysts who are considering adding new investments to their portfolio. When market uncertainty is high, a common consideration is re-balancing portfolios by replacing some securities that have a positive correlation with those that have a negative correlation.

Here are some common examples of a negatively correlated relationship between assets:

1. Oil prices and airline stocks

2. Gold prices and stock markets (most of the time, but not always)

3. Any type of insurance payoff

To know more about " Negative Correlation"

Refer this link:

brainly.com/question/20319174

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7 0
9 months ago
Make b the subject<br>a=4b+2/3-b​
Rasek [7]

Answer:

b = \frac{3a-2}{9}

Step-by-step explanation:

Given

a = 4b + \frac{2}{3} - b, that is

a = 3b + \frac{2}{3}

Multiply through by 3 to clear the fraction

3a = 9b + 2 ( subtract 2 from both sides )

3a - 2 = 9b ( divide both sides by 9 )

\frac{3a-2}{9} = b

6 0
3 years ago
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