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3 years ago

Suppose a radio station desires to estimate the proportion of the market

Mathematics

1 answer:

In-s [12.5K]3 years ago

6 0

About 3.4% large according to the coordinates

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I need help. 18 = a/2

andrezito [222]

X is 36 hope this help

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2 years ago

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Which one of these numbers could form a triangle?

padilas [110]

Answer: non of those numbers

Step-by-step explanation:

all the numbers couldn't form a triangle

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2 years ago

Micheal used addition to find 9x100 and he said the product was 90. What did he do wrong?

Vlada [557]

Answer:

He did 9 times 10 instead of 9 times 100.

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2 years ago

A rectangular parking lot must have a perimeter of 440 feet and an area of at least 8000 square feet. Describe the possible leng

tangare [24]

Answer:

The possible parking lengths are 45.96 feet and 174.031 feet

Step-by-step explanation:

Let x be the length of rectangular plot and y be the breadth of rectangular plot

A rectangular parking lot must have a perimeter of 440 feet

Perimeter of rectangular plot =2(l+b)=2(x+y)=440

2(x+y)=440

x+y=220

y=220-x

We are also given that an area of at least 8000 square feet.

So, $xy \leq 8000$

So, $x(220-x) \leq 8000$

$220x-x^2 \leq 8000$

So, $220x-x^2 = 8000\\-x^2+220x-8000=0$

General quadratic equation : $ax^2+bx+c=0$

Formula : $x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}$

$x=\frac{-220 \pm \sqrt{220^2-4(-1)(-8000)}}{2(-1)}\\x=\frac{-220 + \sqrt{220^2-4(-1)(-8000)}}{2(-1)} , \frac{-220 - \sqrt{220^2-4(-1)(-8000)}}{2(-1)}\\x=45.96,174.031$

So, The possible parking lengths are 45.96 feet and 174.031 feet

3 0

3 years ago

Find the difference between the product of 2.5 and 7.5 and the sum of2.75 and 9.55

Brums [2.3K]

Answer:

6.45

Step-by-step explanation:

The answer=2.5*7.5-(2.75+9.55)=18.75-(12.3)=6.45

8 0

2 years ago