lordfarquad233 lordfarquad233

10-12-2020
Mathematics

contestada

The school store sells erasers for $0.35 each and pencils for $0.15 each. Anthony spent $2.80 to buy a total of 12 erasers and pencils. How many erasers did Anthony buy?

Respuesta :

348937889 348937889

10-12-2020

Answer:

5 erasers.

Step-by-step explanation:

0.35e + 0.15p = 2.80

e + p = 12

e = 12 - p

0.35(12 - p) + 0.15p = 2.80

4.2 - 0.35p + 0.15p = 2.80

4.2 - 0.2p = 2.80

-0.2p = -1.4

-0.2p/-0.2p = -1.4/-0.2

p = 7

e = 12 - 7

e = 5

Answer Link

Otras preguntas

Stanley puts $100 in the bank for two years at 5 % interest compounded annually. At the end of the two years, what is his balance?

What is t equal to in the equation 6t-1/6=9

How much force is needed to accelerate a 68 kilogram-skier at a rate of 1.2 m/sec^2?

What is 0.0000465 written in scientific notation

how did geography affect the development of athens as a city state

The regular price of a shirt is $24. The sale price is $18. The sale price is what percent of the regular price?

If the atmosphere is like a greenhouse, what parts of it function as the "glass"?

How are kingdom and genus related ??

One of the base angles of an isosceles triangle is 49What is the measure of the vertex angle?

Nicholas spends 20 minutes ironing shirts with his 1,800-watt iron. How many joules of energy were used by the iron?