Mathematics, 14.07.2019 14:00 isabhb4227
The work of a student to solve a set of equations is shown: equation a: y = 15 β 2z equation b: 3y = 3 β 4z step 1: β3(y) = β3(15 β 2z) [equation a is multiplied by β3.] 3y = 3 β 4z [equation b] step 2: β3y = 15 β 2z [equation a in step 1 is simplified.] 3y = 3 β 4z [equation b] step 3: 0 = 18 β 6z [equations in step 2 are added.] step 4: 6z = 18 step 5: z = 3 in which step did the student first make an error? step 4 step 3 step 2 step 1
Answers: 1
Mathematics, 21.06.2019 16:30
The average human heart beats 1.15 \cdot 10^51.15β
10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65β
10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year.how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.
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Mathematics, 21.06.2019 18:00
Henry is an avid reader, he devours 90 pages in half an hour how many pages has henry read per minute?
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Mathematics, 21.06.2019 20:20
Tomas used 3 1/3 cups of flour and now has 1 2/3cups left. which equation can he use to find f, the number of cups of flour he had to begin with? f+3 1/3=1 2/3 f-3 1/3=1 2/3 3 1/3f=1 2/3 f/3 1/3=1 2/3
Answers: 1
Mathematics, 21.06.2019 22:00
Set up and solve a proportion for the following application problem. if 55 pounds of grass seed cover 404 square feet, how many pounds are needed for 7272 square feet?
Answers: 1
The work of a student to solve a set of equations is shown: equation a: y = 15 β 2z equation b: 3...
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