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anzhelika [568]
3 years ago
14

Your friend gave you a gift card for your birthday. You use it to buy a DVD for

Mathematics
2 answers:
Elza [17]3 years ago
7 0
The answer is $60.00

DIA [1.3K]3 years ago
4 0
120 or it's 60 (: i think because if it's' 60 then you just add the 15 to 45 but if it's 120 then you multiply 60 ny 2

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HELP LOL IT MY LIL SIS HELPP
Lera25 [3.4K]

Answer:

Step-by-step explanation:

3 0
3 years ago
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20 points! Please Help me!
tigry1 [53]
The answer to the following equation is B
7 0
2 years ago
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Decomposition, find f(x) and g(x) so that the function can be
andrew11 [14]

Answer:

steps below

Step-by-step explanation:

f(x) = x + 5

g(x) = x - 4

f(g(x)) = f(x-4) = (x-4) + 5

3 0
3 years ago
Which measure of center will provide the most accurate estimation of the deposits for the savings account? Why?
faust18 [17]
Hello,

First you have order all the number least to the greater. That gives 30, 75, 80, 85, 85, 95, 95, 100, 100, 110.

Afterwards you have to find the median. Why ?

I will explain you. It's because the median is robust. In fact, it can't be influenced by extreme values (example : 110) but the mean yes. So the mean won't be accurate.

"Then why don't you choose the mode ? " you will ask me. That's because the mode takes the number which appears most often in a set of numbers. It couldn't be accurate at all. It will be useless for this set of numbers.
Furthermore, here there are 3 numbers which appears the most ( 2 times for each) : $85, $95 and $100. Which one will you take ?

Therefore the median is the most suitable and the most accurate to know the center because it is robust.

Now, let's find the median :

There are 10 values, so the median will be the average of the 5th and 6th values.

5th value = 85
6th value = 95

\frac{(85+95)}{2}
= 90

Therefore the median is 90.

Hope this helps !

Photon
4 0
3 years ago
Add the sum and difference identities for sin x to derive 1/2 [sin(x+y)+sin(x-y)]=sin x cos y
Solnce55 [7]

Answer:

true

Step-by-step explanation:

1/2 (sin(x+y)+sin(x-y))

= 1/2 (sin x cos Y + cos x sin y + sin x cos y - cos x sin y)

= 1/2 * 2 sin x cos y

= sin x cos y

The expression is true.

3 0
3 years ago
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