Sonji has $5.25 in nickels and dimes. The coin value can be modeled by the equation 0.10 d plus 0.05 n equals 5.25, where d represents the number of dimes and n represents the number of nickels. If Sonji has 21 dimes, how many nickels does she have?

A) 35
B) 42
C) 63
D) 105

N = 63

Step-by-step explanation:

The equation given in the question is

0.10d + 0.05n = 5.25

Putting d = 21, we get

(0.10 * 21) + 0.05n = 5.25

2.1 + 0.05n = 5.25

0.05n = 3.15

n = 63

Hope this helps!!!

Please be kind to mark Brainliest!!

yo answer should be 6 if im not mistaken

step-by-step explanation:

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)