Donata bought 4 lemons and 4 plums at the local supermarket for a total of $ 21.60. dan bought 11 lemons and 6 plums at the same store for a total of $40.90 how much does one lemon cost. . how much does 1 plum cost?

Each lemon costs $1.70. Each plum costs $3.70.

Step-by-step explanation:

You have two unknowns and two statements about costs. First, define a variable for each unknown. Then, translate the statements about the costs into two equations. Then, solve the system of equations.

Let L = price of 1 lemon

Let P = price of 1 plum

Donata:

4 lemons and 4 plums for $21.60

4L + 4P = 21.6      Equation 1

Dan:

11 lemons and 6 plums for $40.90

11L + 6P = 40.9       Equation 2

Here is the system of equations.

4L + 4P = 21.6      Equation 1

11L + 6P = 40.9       Equation 2

Divide both sides of Eq. 1 by 4.

L + P = 5.4

Multiply both sides by -6.

-6L - 6P = -32.4

Add the equation above to the Eq. 2.

5L = 8.5

L = 8.5/5

L = 1.7    <  price of a lemon

L + P = 5.4

1.7 + P = 5.4

P = 3.7    <   price of a plum

Each lemon costs $1.70. Each plum costs $3.70.

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet