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AleksAgata [21]
3 years ago
12

A letter to Europe from the United States cost $.94 to mail. A letter mailed within the United States cost $.44. Nancy mailed fi

ve letters for $3.70, some to Europe and some to the United States. How many letters did she send to Europe. Explain.
Mathematics
1 answer:
frosja888 [35]3 years ago
7 0

Answer:

3

Step-by-step explanation: i used my calculator

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Reabilwe is conducting an experiment in which the temperature is measured carefully. The temperature was 106°C at the end of the
frosja888 [35]

The formula to calculate the temperature (T) after m minutes is -

T = 106 - 6m

We have Reabilwe who is conducting an experiment in which the temperature is measured carefully. The temperature was 106°C at the end of the first minute, and then it falls by 6°C every minute after that.

We have to tp determine a formula to calculate the temperature (T) after m minutes.

<h3 /><h3>Starting from x, if the bacteria count rises by 5 every second, then determine the formula to calculate the bacteria count after 30 seconds.</h3>

Initial count = x

Count increasing per second = 5

Assume that the bacteria count after t seconds is y. Then -

y = x + 5t

for t = 30 ↔ y = 150 + x

According to question, we have -

Initial Temperature = 106 degrees Celsius

Temperature increase per minute = 6 degrees Celsius

Assume that the Temperature fall after m minutes is T. Then -

T = 106 - 6m

Hence, formula to calculate the temperature (T) after m minutes is -

T = 106 - 6m

To solve more questions on Equation Modelling, visit the link below -

brainly.com/question/20876878

#SPJ1

5 0
2 years ago
Each month, Molly budgets $1450 for fixed expenses, $600 for living expenses, and $340 for annual expenses. Her annual net incom
den301095 [7]

Answer:

surplus of 150$

Step-by-step explanation:

1853.68 + 178.  times .249  = ......................owed at the end of the month

1450 +600 + 340 = $2390. * 12=  $28 680. annually ..

30480 - 28680 = $1800. surplus at the end of the year  divided by 12 =  $150.00 monthly surplus

4 0
3 years ago
Read 2 more answers
Robert has 26 coins that are all nickels and dimes. The value of the coins is $1.85. How many of each does he have?
Ira Lisetskai [31]

Answer:

he has 11 dimes and 15 nickels

Step-by-step explanation:

i kept going down reducing the amount of dimes and adding to the amount of nickels and found that 11 dimes is $1.10 and 15 nickels is $0.75

5 0
3 years ago
What is the rate in feet per second? 10 feet 16 seconds
Ierofanga [76]
Feet
_____
second


10 feet
________
16 second

equals

.625 feet per second
7 0
3 years ago
"A new bakery offers decorated sheet cakes for children’s birthday parties and other special occasions. The bakery wants the vol
Darya [45]

Answer:

w = 9 \text{ inches}\\l = 13\text{ inches}\\h = 3\text{ inches}      

Step-by-step explanation:

We are given the following in the question:

Volume of cake = 351 cubic inches

Let x inches be the width of cake.

Width of cake, w =

x\text{ inches}

Then, length of cake,l =

(x + 4)\text{ inches}

Height of cake,h =

\dfrac{x}{3}\text{ inches}

Volume of cake = Volume of cuboid

V = lwh

Putting values, we get:

351 = x(x+4)(\dfrac{x}{3})\\\\1053 = x^3 + 4x\\x^3+4x^2-1053= 0\\\\\text{For x = 9}\\(9)^3+4(9)^2-1053= 0

Thus, dimensions of cake are:

w = 9 \text{ inches}\\l = 13\text{ inches}\\h = 3\text{ inches}

3 0
3 years ago
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