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Ilya [14]
3 years ago
11

Evaluate the expression x+2y when x=2 and y=−2.5.

Mathematics
2 answers:
BARSIC [14]3 years ago
7 0

Answer:

‒3

Step-by-step explanation:

x+2y=2+2(‒2.5)

=2+(‒5)

=2‒5

=‒3

i hope it helps you

kow [346]3 years ago
4 0

Answer: -3

Step-by-step explanation:

If you plug in the numbers, the equation would look like: 2+2(-2.5)

Multiply 2 by -2.5 and you'll get -5 as your product. Add 2 and -5 together to get the sum of -3.

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What is the value of n
klasskru [66]

Answer:

9 + 18 = 27

27 + n + 1

= n = 27 - 1 = 26.

n = 26

9 + 18 + 26 + n + 7 =

53 + n + 7

53 + 7 + n

60 + n = 360

n = 360 - 60 = 300

so, n 300

so = 9, 18, 300, 26

7 0
3 years ago
George’s age is three times that of his brother. When you add George’s age to his brother’s, you get 24. How old is each brother
vivado [14]

Answer:

G=18

Step-by-step explanation:

George-G

1/3G+G=24

4/3G=24

3/4*4/3G=24*3/4

G=18

George will be 18 years old there we can find his brothers age by dividing it by three thus 18/3=6

5 0
3 years ago
Read 2 more answers
Four speed skaters, Marco, Naim, Oliver, and Pedro, compete in a relay race where they all agree that Naim will be the last
allochka39001 [22]

Answer:

A = {MOPN, MPON, PMON, POMN}

Step-by-step explanation:

Everyone has already agreed that Naim would be the last skater, so we have to make sure that the result has 'N' in each last place. As we can see, they all have this.

Now, we also have to make sure Oliver <u>not</u> first, because although they're trying to decide, the problem asks for the <u>complement</u> in which "Oliver is the first skater in the race."

A complement is all the values that are NOT in the set, so it cannot be A = {OPMN, OMPN) or A = {MOPN,MPON, OPMN, POMN), because they both have at least one case where 'O' is first.

A complement is ALL other values of the set, so it cannot be A = {MOPN, PMON}, because that set only shows two possible values.

Therefore, A = {MOPN, MPON, PMON, POMN} is your answer.

5 0
3 years ago
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Julie made $22,$55,38,25 how much did she made ?
Dennis_Churaev [7]
Are you trying to add together everything she made in a span of time? If so:
22 + 55 + 38 + 25 = 140

7 0
3 years ago
Write a number sentence that tells what the model represents
atroni [7]
Well it depends on what the model is but if it's an IRA or whatever so if you make your own model that's easy
8 0
3 years ago
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