Answer:
72 Wrong, so find how many are right with 135 total
Step-by-step explanation:
It's similar to saying if she answered half and this continued how many would she have answered after answering a bigger number, you would say half.
so she answered 8/15 incorrectly a a smaller number, so she will answer that ratio with a bigger number. If it helps 8/15 is about 53%. just like 1/2 is half. So to find half you would multiply something by 1/2 and int he same way you multiply something by 8/15 to get that proportion of it.
so 135, if you take this 53%, or simply multiply it by 8/15 you get your answer of 72. So 72 wrong so al others are right, which you get with 135-72 = 63.
You could also do 135*(1-8/15) = 135 * 7/15. if you ever want to find something NOT part of the proportion you do 1 - that proportion.
Answer:
Since this triangle seems to be 180 degree, and one angle is 90 degrees and the other is half thslat value (45), the other value will be 45 degrees. It is an Isosceles triangle
The answers are revealed by subtracting the right side of the equation from both sides.
(a) (2x+3x-6) -(10+4x) = 0
... x -16 = 0 . . . . one solution; neither
(b) (17+5x) -(23+4x-6+x) = 0
... 0 = 0 . . . . . . . an infinite number of solutions; an identity
(c) (7x+4) -(5x+8+2x-10) = 0
... 6 = 0 . . . . . . . no solutions; a contradiction
Solving/simplyfying in the problem 7(x+5):
1. Distribute
2. You get 7x+35.
Answer:
B) To solve, find the cost of 1 pound of apples; write a division equation.
C) The correct equation for this problem is 5a = $6.45. Solve this problem by dividing both sides by 5.
F) Each pound of apples costs $1.29.