MATHEMATICS MIDDLE SCHOOL

A triangle cannot exist is A< 90° and a 90° and a< b. True or False

Answers

Answer 1
Answer: False because you cant make triangles with 2 right angles
Answer 2
Answer:

Answer:

B on edge

Step-by-step explanation:

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40% of what number is 5

Answers

40% can be expressed as 40/100 or 0.4

(40)/(100) * x = 5\n\n0.4 * x = 5

Divide both sides by 0.4 to isolate 'x'

0.4x = 5\n\n(0.4x)/(0.4) = (5)/(0.4)\n\nx = (5)/(0.4) \n\n\boxed{\bf{x = 12.5}}

40% of 12.5 is 5.
It would be 12 and 1/2 because 40% is 2 and 1/2 of 100 and then you do 5 times 2 and 1/2 and you get 12 and 1/2.

What is 1/6 divide by 2/6

Answers

1/6 divided by 2/6

reciprocal of 2/6 is 6/2

1/6*6/2= 1/2
(1)/(6) / (2)/(6) \n\n (1)/(6) * (6)/(2) \n\n=\boxed{ (1)/(2) }

Answer questions 1, 2, 3 and challenge

Answers

1. find volume
V=LWH
V=25*13*14
V=4550
each covers 1000
how many will cover the whole thing?
we can't put 4 becuase that leaves 550 uncovered
add another


5 is answer (it is too much , but at leas not too little) answer is D




2.
V=LWH
V=6*4*10
V=240

answer is D






3.  count how many are there, don't forget the hidden ones
13 cubes
volume=legnth tiems width times height
cubes so
v=side^3
side=3
3^3=27
13 cubes
13*27=351 in^3


challenge (this is meant to challenge you, not for you to ask people, but I will solve anyway, robbin you of experience)

V=LWH
V=5880
H=30
5880=LW30
divide both sides by 30
196=LW
they have square bases so L=W
196=L^2
sqrt both sides
14=L=W
the side legnth is 14in

Which is greater 1 9/16 or 1 5/8

Answers

1 5/8 is larger because 5/8=10/16

Please Help ASAP! I suck at geometry :(

Answers

We know that for every 5 red bricks there were 2 gray bricks.

The total amount of red bricks and grey bricks in this sample is 7.

5 red bricks + 2 grey bricks = 7 bricks

Now, we divide 175 "total number of bricks used" by 7 "5 red bricks + 2 grey bricks = 7 bricks" and we will get a quotient of 25.

Now we know that 25 bricks is (1)/(7) of the wall. The gray bricks are (2)/(7) so we can multiply 25 by 2 and we will get a product of 50. If 1/7 = 25 grey bricks so 2/7 would be the grey bricks.

175 - 50 = number of red bricks.

Therefore, there were 125 red bricks.
There were 125 bricks knowing that for every 5 bricks there are 2 gray bricks

What is 1/4 x 3 6 / 4

Answers

(1)/(4) * 3 (6)/(4)

Convert mixed numbers to improper fractions:

= (1)/(4) * (18)/(4)

Multiply fractions:

= (18)/(4*4) 

= (18)/(16)

Cancel the common factor 2 :

(18/2)/(16/2)

= (9)/(8)

hope this helps!
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