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OleMash [197]
2 years ago
15

Using a phone card to make a long distance call costs a flat fee of $0.57 plus $0.31 per minute starting with the first

Mathematics
1 answer:
aliina [53]2 years ago
7 0

Answer:

it's d

Step-by-step explanation:

multiply 0.31 by the amount of minutes used (27) and add the flat fee to it.

0.31×27+(0.57)= 8.94

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When her number is divided by 12, the remainder is 6, what is the remainder when the number is idvided by 9?
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Remainder: 6 when divided by 12
So 12x6= 72
Original number: 72
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3 years ago
The population of Laredo, Texas, was about 215,500 in 2007. It was about 123,000 in 1990. If we assume that the population growt
Mazyrski [523]

Answer:

hello, This can be solved using your standard rise over run slope calculation.  Think of the number of years after 1990 as your input variable.  2007 would be 17 years after 1990, so the "y" variable would be 17.  This is your "run", and it goes in the denominator of your slope calculation.  Then the difference between the 2007 population and the 1990 population would be the "p" variable difference, the "rise", which is 92500.  Dividing, you will get 5441.17.  Since we're talking about humans, we can't have a decimal, so let's round up to 5442.

 

Using the slope-intercept form of a linear equation (y = ax + b), we will say that p = 5442y + 123000.  Do you know why we add the 123000?  It's because that's the starting value, which is equivalent to the "intercept" in the slope-intercept form.

 

Hope this helps.

Step-by-step explanation:

6 0
3 years ago
The length of one leg of a right triangle is 9cm and 40cm
Damm [24]

Answer:

Step-by-step explanation:

I think ur is D but I'm not sure

4 0
2 years ago
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Charlie invests £1200 at 3.5% per annum compound interest.
lbvjy [14]

Answer:

<h2>£1,330.46</h2>

Step-by-step explanation:

Using the compound interest formula A = P(1+\frac{r}{n} )^{nt}

A = amount compounded after n years

P = principal (amount invested)

r = rate (in %)

t = time (in years)

n = time used to compound the money

Given P =  £1200., r = 3.5%, t = 3years, n = 1 year(compounded annually)

A = 1200(1+0.035)^{3}\\ A = 1200(1.035)^{3}\\ A = 1200* 1.108717875\\A = 1,330.46

Value of Charlie's investment after 3 years is £1,330.46

6 0
3 years ago
Find the lowest common denominator.<br> 1/6 and 3/8<br> The lowest common denominator is
tiny-mole [99]

Answer:

24 as the denominator.

Step-by-step explanation:

6 goes into 24, 4 times.

8 goes into 24, 3 times.

7 0
3 years ago
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