If a=2 , b=1 , d=4, then what must c = ?

duh obviously the answer is idk, and let me tell you why

Step-by-step explanation:

because when you add 2+4 and then it gives you 78 now you can square root that 78 and it will give you 8 and after that you get 8 of your fingers and play with yourself a little bit but not too much, therefore the answer is idk.

hope i was helpful

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)

eve and marks ratios are equivalent

step-by-step explanation: