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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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Simplify the expression. <br> 1/2r – 2r + 6 – 3
Hoochie [10]

Answer:

-3(r-2)/2

Step-by-step explanation:

r/ 2 − 2 r + 6 − 3

r /2 − 2 r⋅ 2/ 2+ 6 − 3

r/ 2 + − 2r ⋅ 2/ 2 + 6 − 3

r − 2 r ⋅ 2 /2 + 6 ⋅ 2/ 2 + − 3 ⋅ 2/ 2

r − 2 r ⋅2 + 6⋅ 2 − 3 ⋅ 2 /2

r − 4 r + 12 − 6 /2

−3 ( r − 2 ) /2

Hope that helps! Plz, mark brainiest! :D

Have a great day!

7 0
3 years ago
Are the mods awake or they sleep?
salantis [7]

Answer:

What is a mod?

Step-by-step explanation:

4 0
3 years ago
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Ivan and Jeff buy a package of 8 pens for $4.00. Ivan wants 5 of the pens, and Jeff wants 3. How much should each student pay?
irga5000 [103]
$4 / 8 = 50 cents per pen

.5 * 5 = 2.50
.5 * 3 = 1.50

Ivan pays $2.50 and Jeff pays $1.50
3 0
3 years ago
A water hose used one -eighth of a gallon of water and every second.If Halsey need to fill up 7 gallons sized containers, how ma
Katarina [22]

Answer:

It will take 56 seconds

Step-by-step explanation:

A water hose used one -eighth of a gallon of water and every second. This means that the flow rate is

1/8 gallon per second.

If Halsey need to fill up 7 gallons sized containers, let x represent the number of seconds that it will take Halsey to fill up 7 gallons. Therefore,

1/8 gallons = 1 second

7 gallons = x seconds.

Cross multiplying,

1/ 8 × x = 7 × 1

x/8 = 7

x = 8 ×7 = 56 seconds

6 0
3 years ago
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R to he car dealer pays $10,000 for a car. They mark it up 40%
BartSMP [9]

Answer:

14000

Step-by-step explanation:

Do 40% of 10,000= 4,000

4,000 + 10,000= 14,000

4 0
4 years ago
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