How many terms are in the expression shown below?a2 - ab + 8b + b2 - 1
2
3
4
5

Answers

Answer 1

Answer: The answer is: 5 .
___________________________
1) a² ;
___________
2) −ab ;
___________
3) + 8b ;
___________
4) + b² ;
___________
5) − 1 .
____________________________________________________

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A box contains bags of crisps. Each bag of crisps weighs 25 grams. Altogether, the bags of crisps inside the box weigh 1 kilogram. How many bags of crisps are inside the box?

Answers

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120 books increased by 55%

Answers

Simplest way to do this:
number of books= 120
percentage represented by 120= 100%
increase current percent by 55%= 155%

: . 55% increase = original number of books * (155%)
= 120 * (155/100)
= 186

Two lines are perpendicular. The slope of one line is -2, What is the slope of the other line?A. 1/2

B. -1/2

C. -2

D. 2

Answers

perpendicular lines have negative reciprocal slopes. All that means is " flip " the slope and change the sign.
slope = -2, or -2/1....so flip the slope...-1/2...and change the sign...1/2.
so the perpendicular slope would be 1/2.

What is the result?

∫([1/x].dx/x^3)
D=[1/2, 1]

Answers

$\displaystyle\int_(.5)^1\frac{1}x(dx)/(x^3)=\int_(.5)^1(dx)/(x^4)=\left[(-1)/(3x^3)\right]_(.5)^1=\frac{7}3$

[Your notation is not 100% clear since you're not using the math tool, so if that's not what you meant, leave a comment and I'll correct the answer.]

Tommy is drawing a triangle with angles measuring 41° and 123°, and the included side measures 6 cm. What is the measurement of the third angle of the triangle? A) 16°

B) 57°

C) 139°

D) 196°