Pandadoge2716 Pandadoge2716

01-10-2018
Mathematics

contestada

Trisha has a bag with 32 dimes and nickels worth $2.80. How many of each coin does she have?

Respuesta :

wolf1728 wolf1728

01-10-2018

A) D + N = 32

B) .1D + .05N = 2.80 multiplying A) by -.1

A) -.1D -.1N = -3.2 then adding this to B)

-.05N = -.4

Nickels = 8 Dimes = 24

*************** DOUBLE-CHECK

.1 * 24 + .05 * 8 = 2.80 ||| 2.40 + 40 = 2.80

Answer Link

Otras preguntas

What are some 5th grade science words that start with y

what religion did mansa musa of mali help spread

A hiking club has 9 members. How many ways can they choose a president, vice president, secretary, and treasurer from among the members?

If the probability of giving birth to a boy is 0.52, what is the approximate probability of giving birth to 4 consecutive boys?

Please help??? Science SEMESTER REVIEW!!!!In a series of rock layers, a geologist finds fossils of a pine trees and oak trees in layers that are 1.0 m and 1.5

The positive integer x is a multiple of 9 and also a multiple of 12. The smallest possible value of x is (A) 3 (B) 12 (C) 21 (D) 36 (E) 72

how do you solve 2.75+.003+.158=

The fetus is nourished by the __________ during the first 7 weeks and by the _______ from week 8 through birth ?

What causes chemical weathering?

how do you solve 2.75+.003+.158=