MATHEMATICS HIGH SCHOOL

Which choice describes a trapezium?a.) a quadrilateral with no pairs of parallel sides
b.) a quadrilateral with exactly one pair of parallel sides
c.) a quadrilateral with two pairs of parallel sides
d.) a quadrilateral with four congruent sides

Answers

Answer 1
Answer: A quadrilateral with exactly one pair of parallel sizes
B
Answer 2
Answer:

The correct answer is A) a quadrilateral with no pairs of parallel sides i took the test and got it correct

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Find the area of a triangle given that
c=40m
b=20m
a=48°

Answers

Area= (1)/(2)\cdot c\cdot b\cdot sin \alpha \n\n------------------\n\nA= (1)/(2)\cdot 40\cdot20\cdot sin48^0\approx400\cdot0.7431=297.24\ [m^2]\n\nAns.\ Area\ is\ about\ 297.24\ [m^2]

Lisa purchased a prepaid phone card for $25. Long-distance calls cost $.21 a minute using this card. Alyssa used her card only wants to make a long distance call. If the remaining credit on her card is $20.59, how many minutes did her call last?

Answers

21 minutes
You have to take away 25-20.59 then divide the answer by 0.21

Can someone help me with this graph

Answers

just plot the points on the graph so if x+y=-6 just make a list of all of the points that will work (remember that the left-to-right line is x and the up-to-down line is y, and right and up is positive and left and down is negative)

so make a list (in graphs we write [x,y] or (x,3))   so here are some points that will work
(-3,-3)
(-4,-2)
(-2,-4)
(-1,-5)
(-5,-1)
(0,-6)
(-6,0)
(-7,1)
(1,-7)
and so on, just plot those points and more that will work for x+y=-6 and you should be good,

there is another way that this is supposed to be done but this way is easier

If a sheep eats 1/6 of a bale a day how many sheep can be fed off of 1bale of hay?

Answers

To find out how many \frac { 1 }{ 6 } there are in 1 you should divide 1 by  \frac { 1 }{ 6 } so :
\frac { 1 }{ \frac { 1 }{ 6 } } =1\cdot 6=6 
6 sheep can be fed with 1 bale hay
6 because 6/6 is a whole and each sheep only eats 1/6.

sophies math class has 6 fewer boys than girls , and there are g girls. write an expression for the number of boys

Answers

It is a known fact that there are 6 fewer boys than girls in Sophies class. We need to write an expression based on thi fact. It is also given in the question that there are "g" girls present in the class of Sophie. so there are several factors that we already know from the question given.Now
Number of girls in sophies class = g
Let the number of boys in Sophies class - b
Then the expression for the number of boys will be
b = g - 6
This is the final and only expression that can determine the number of boys in Sophies class.

The answer is g - 6

I hope this helps!

Which trinomial is equivalent to (3x-1)(x+4)

Answers

Foil this out.
 first 3x*x outer
3x*4 Inner
-1*x last -1*4 multiply,
 combine like terms, and you'll have your answer
(3x - 1)(x +4)=
= 3x * x + 3x * 4 - 1 * x - 1 * 4 =
= 3x^2 + 12x - x - 4 =
= 3x^2 + 11x - 4

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