Mathematics, 28.01.2020 00:31 blessing03
Hannah and heather are sisters. hannah's age is four less than twice heather's age. the sum of their ages is 30. which system of equations can be used to determine hannah's age, x, and heather's age, y?
a.
x + 30 = y
x = 2 - 4y
b.
x + y = 30
x - 2y = 4
c.
x + y = 30
x = 2y - 4
d.
x + y = 4
y = 30 - 2x
Answers: 2
Mathematics, 21.06.2019 16:00
The level of co2 emissions, f(x), in metric tons, from the town of fairfax x years after they started recording is shown in the table below. x 2 4 6 8 10 f(x) 26,460 29,172.15 32,162.29 35,458.93 39,093.47 select the true statement.
Answers: 1
Mathematics, 21.06.2019 16:20
Giuseppi's pizza had orders for $931.00 of pizzas. the prices were $21 for a large pizza, 514 for a medium pizza, and $7 for a small pizza. the number of large pizzas was two less than four times the number of medium pizzas. thenumber of small pizzas was three more than three times the number of medium pizzas. how many of each size of pizza were ordered?
Answers: 1
Hannah and heather are sisters. hannah's age is four less than twice heather's age. the sum of their...
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