sashaaa06 sashaaa06

23-10-2019
Mathematics

contestada

3. Rob has 40 coins, all dimes and quarters, worth $7.60. How many dimes and how many quarters
does he have?

Respuesta :

HomeworkHelper389 HomeworkHelper389

23-10-2019

x = quarters
y = dimes
x + y = 40
25x + 10y = 760
25x + 10(40 - x) = 760
25x + 400 - 10x = 760
15x + 400 = 760
15x = 360
x = 24
y = 16
Rob has 24 quarters and 16 dimes

Answer Link

Otras preguntas

5a-(8-a)=4a-10 equation:

how might Greece's physical features have affected the development of Greek trade, culture, and legacy

is 24/40 equivalent to 3/5

A hot air balloon is rising upward with a constant speed of 2.50m/s. When the balloon is 3.0 m above the ground, the balloonist drops a compass over the side of

The period in Japan's history in the late 19th century when imperial rule was restored was known as the

Round 4.173 to the nearest hundreth

6,000,000+80,000+10 IN STANDARD FORM

What element is mostly used in magnets, gold or cobalt?

Four gallons of paint cost $49.44. Which equation can be used to find c, the cost per gallon?

Solve y and x (simeltanious equation) Y=5x+10 Y=2x+10