Valuate the line integral Integral from Upper C to font size decreased by 10 gradient phi times d Bold r for the following function phi and oriented curve C (a) using a parametric description of C and evaluating the integral directly, and (b) using the Fundamental Theorem for line integrals. phi(x, y)equalsxy; C: r(t)equalsleft angle cosine t comma sine t right angle, for 0less than or equalstless than or equalsStartFraction pi Over 4 EndFraction (a) Set up the integral used to evaluate the line integral using a parametric description of C. Use increasing limits of integration. Integral from nothing to nothing (nothing )dt (Type exact answers.)

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!

answer: 2 answers

step-by-step explanation: the first one means to spread the product throughout the marketplace such that a large number of people can buy it.  

the second means the process of making a product or service available for the consumer or business user that needs it.

mark this brainliest and i will be glad to .

step-by-step explanation: s

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: