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disa [49]
4 years ago
9

Mary sent out invitations to her wedding last week. The invitations were heavy, so put more than just one stamp on each envelope

. She use 255 stamps and mailed out 85 invitations. If she used an equal amount of stamps on each envelope, how many stamps did she place on each envelope?​
Mathematics
1 answer:
Aleksandr [31]4 years ago
8 0

Answer:

she used 3 on each

Step-by-step explanation:

255/85=3

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What is the simplified form of -9m^-2n^5 times 2m^-3n^-6
vazorg [7]

Answer:

-18m^6n^-30

Step-by-step explanation:

combining like terms

8 0
4 years ago
During a cold winter, the temperature stayed below zero for 10 days (ranging from −20 to −5). The variance of the temperatures o
Serjik [45]

Answer:

The variance of the temperatures of the 10 day period must be at least zero.

Step-by-step explanation:

The variance is the expectation of the squared deviation of a random variable from its mean. It measures how far a set of numbers are spread out from their average value.

Its unit of measure corresponding to the square of the unit of measure of the variable. In this case, the variance of the temperatures is expressed in (°C)². The variance has a minimum value of 0.

Since the variance is squared, it will always have values greater than zero.

5 0
3 years ago
I have to find the base
Alona [7]

your answer would be 13.5

6 0
3 years ago
What is the answer ​
Reika [66]

Answer:

35 mi²

Step-by-step explanation:

Let's subdivide the figure, as shown.

The lower part is a rectangle whose area is (5 mi)(18 mi) = 90 mi².

The upper part is a trapezoid whose area is found by averaging the length and multiplying the result by the width (8 mi - 5 mi), or 3 mi.

Area of trapezoid:

     12 mi + 18 mi

  ------------------------  =  15 mi             Width of trapezoid = 3 mi

                2

Thus, the area of the trapezoid is (3 mi)(15 mi) = 45 mi²

and the total area of the entire figure is

45 mi² + 90 mi² = 135 mi²

3 0
3 years ago
A graph is shown below. Does the graph shown represent a function? Why or why not?
sveticcg [70]
Hey, this is not a complete question, there is not visible graph. You may wanna retry to set up your question and make sure the graph is there
4 0
3 years ago
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