Mathematics: On monday, harold picked up four donuts and three large coffees for the office staff. he paid $4.96. on tuesday, melinda picked up six donuts and six large coffees for the office staff. she paid $8.70. what is the cost of one donut? what is the cost of one large coffee?

On monday, harold picked up four donuts and three

Ответ:

P05182010

30.12.2021

$x-cost\ of\ donut\\y-cost\ of\ coffee\\\\ \left \{ {{4x+3y=4.96\ \ |\cdot-2} \atop {6x+6y=8.7}} \right. \\\\ \left \{ {{-8x-6y=-9.92} \atop {6x+6y=8.7}} \right.\\+-----\\\\-2x=-1.22\ \ \ |:-2\\x=0.61\\\\4\cdot0.61+3y=4.96 \\2.44+3y=4.96\\3y=4.96-2.44\\3y=2.52\\y=0.84\\\\Donut\ cost\ 0.61\ and\ coffee\ cost\ 0.84$

0,0(0 оценок)

Ответ:

supergirl101911

24.03.2020

Mathematics

5 5/6 miles

Step-by-step explanation:

There are a few ways to do this, but one way is to find out how many miles per hour the car can travel. For this we do 35/3(distance/time) which is 11 2/3 mph. Now, to find half an hour we can divided 11 2/3 divided by 2, which is

5 5/6 miles.

0,0(0 оценок)

On monday, harold picked up four donuts and three large coffees for the office staff. he paid $4.96. on tuesday, melinda picked up six donuts and six large coffees for the office staff. she paid $8.70. what is the cost of one donut? what is the cost of one large coffee?

Ответ:

Ответ:

Ask your question to the AI advisor

More tips

Answers on questions: Mathematics

Ask an AI advisor a question