Mathematics, 14.12.2021 16:50 teagan1716

9. A student obtains marks in mathematics, physics, and biology. The average of his mathematics and physics marks is 15, his average mark for mathematics and biology is 17, and his average mark for physics and biology is 23. If so, what mark does the student obtain from biology?

Answers: 2

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 19:00, glowbaby123

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60

Answers: 3

continue

Mathematics, 21.06.2019 20:00, michyfbg

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?

Answers: 3

continue

Mathematics, 21.06.2019 21:30, quinteroalex2001

You dug a hole that was 8 feet deep. after taking a short break, you dug down 3 more feet in the same hole. when finished digging, a tractor accidentally filled the hole with 4 feet of dirt. how deep is your hole now?

Answers: 2

continue

Mathematics, 22.06.2019 00:00, mattiemattoos

One of the complementary angles is 4 degrees mor than the other. find the angles (recall that complementary angles are angles whose sum is 90 degrees.) which of the following can not be used to solve the problem if x represents one of the angles? a. 2x-4=90 b. 2x+4=90 c. x+4=90

Answers: 1

continue

You know the right answer?

9. A student obtains marks in mathematics, physics, and biology. The average of his mathematics and...