Acollection of half dollars and nickels is worth $13.40. there are 34 coins in all. how many are there

You can use a guess and check method.

We know .50halfdollar

we know .05 nickels

.50(26) + (.05)(8)=$13.40

13.00+.40=13.40

So, 26 half dollars and  9 nickels

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

no because mercury has a density of 13.6 grams per centimeter squared while gold has 19.32 grams centimeter squared

step-by-step explanation: