Write and solve a system of equation for each problem? A jar contains nickels and dimes. There is a total of 200 coins in the jar and their value is $14.55. How many dimes are in the jar?

Plz show the steps

There are total of 80 dimes in the jar cuz...

n + d = 200 = n = 200 - d

0.05n + 0.1d = $14.00

0.05(200 - d) + 0.1d = $14.00

10 - 0.05d + 0.1d = $14.00

10 + 0.05d = $14.00

-10 -10

0.05d = $4.00

0.05d / 0.05 = $4.00 / 0.05

d = 80

Step-by-step explanation:

hope this helps... *credit to merxinda*

have a good day

answer: this is not a question

step-by-step explanation: this is a answer

answer is 8x+24

area of vanessa's patio = length × width

given, length = (3x² + 5x + 10)

width = (x² - 3x - 1)

area of vanessa's patio = (3x² + 5x + 10)(x² - 3x - 1)

= 3x²(x² - 3x - 1) + 5x(x² - 3x - 1) + 10(x² - 3x - 1)

= 3x⁴ - 9x³ - 3x² + 5x³ - 15x² - 5x + 10x² - 30x - 10

= 3x⁴ - 4x³ - 8x² - 35x - 10

hence, expression of vanessa's patio = (3x⁴ - 4x³ - 8x² - 35x - 10)