Proving identities

Proving identities

Compound Interest: If P dollars are deposited in an account that pays 5% annual interest, then the amount of money in the account after 3 years is P(1+0.05)3. Find the amount when P=$1000...

A recipe for chocolate cake calls for 5 ounces of chocolate that is 40% cocoa solids. In her cupboard, Consuelo has some dark chocolate that is 70% cocoa solids and some milk chocolate that is 20%...

i had been confused, sometime the equation come to be x^2-3^2 then i always wrtie it into (x-3)^2 but the product is not same as (x-3)^2 is equal to x^2-6x+9 thus i realize that x^2-3^2=x^2-9...

Write an exponential growth model that represents the population y (in thousands) t years after the beginning of the decade. Find and interpret the y-value when t = 10. Round your answer to...

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Mia saved up some money for shopping. Her mom gave her $150 more. At a shop, Mia spent $80 on a bag and half of the remaining money on a pair of shoes. She was then left with...

A bag of marbles contains 7 red, 12 orange, 3 blue, and 6 multi-colored marbles. What is the probability of randomly selecting a marble that is not orange?

Justin is decorating cakes to sell. needs 2/5 of a cup to decorate each cake. How many cakes Will Justin be able to complete and have ready to

P(z)=z vertically stretch and reflect by a factor of 5, then shift left by 2

For instance, there may have been 100 voters and we know that 45 voted one way and 55 voted the other or there may have been 450 voted one way and 550 voted the other but what are the other combos...

A complex number a+bi can be multiplied by i to get 1. What is value of a-b? (Note: i2=-1.)

At Algorithm Pizza they have the exponential pizza, which is 24-inch cheese pizza that costs $17.50. Each topping for the pizzz costs $2.35. If Connor ordered the exponential pizza and was charged...

A bag of marbles contains 7 red, 12 orange, 3 blue, and 6 multi-colored marbles. What is the probability of randomly selecting a marble that is not orange?

8.8x10-8 4x10-6 Divide. Express your answer in scientific notation.

. Write an equation in slope-intercept form for a line that passes through the two points (-1,5) and (3,-3).

Answer completed

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At a store, ice cream cones cost $0.90 and sundaes cost $1.65. One day a total of 193 cones and sundaes were sold and the receipts totalled $243.45. How many cones were sold?

7.68yd=7.68x3=23.04 she must buy 23.04 ft of ribbon the question I