Answer:
I only know the first one.
The surface area of the prism is <u>900</u> cm2
Step-by-step explanation:
To solve the surface area, we need to find the area of the SURFACE not the inside of the cube. Lets do the rectangles first.
28 x 13 = 364
28 x 5 = 140
28 x 12 = 336
1 1
336
+ 140
364
-------------
8 4 0
Now lets do the triangles.
Remember! To find the area of a triangle, you have to do Base x Height x 1/2 because it's half a rectangle.
(The triangles have the same area)
12 x 5 x 1/2 = 30
12 x 5 x 1/2 = 30
30
+ 30
--------
60
The last step is to add the areas of the triangles and the rectangles.
1
840
+ 60
------------
900 cm2
<em>The answer is 900cm2</em>
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This <u>Is not</u> copy pasted, I actually put in all this effort.
Hope this helps :) And have a wonderful day! :D
I need more info
Then that
Answer:
Step-by-step explanation:
y + 2 = 3(x + 1)
y + 2 = 3x + 3
y = 3x + 1
Answer:
1. 3 2/3
2. 4 9/10
3. 1 27/56
4. 58 2/15
5. 11 1/24
Step-by-step explanation:
1. To find the answer, add 3 1/6 and 5 9/10. First change them into improper fractions. 5 9/10 is 59/10 and 3 1/6 is 19/6. Now, you have to make the denominator (bottom number) the same number for both fractions. To do this you must find a LCM for both the number (10, 6) a LCM for these numbers is 30. Now to change the denominator to this you must times the numerator and denominator by the number needed to get the LCM for the denominator.
So 6 x 5 = 30 and 3 x 10 = 30.
19/6 x 5 = 95/30 and 59/10 x 3 = 177/30
Now add the fractions:
This equals 272/30
Simplify:
Now take 12 5/6 and turn it into a improper fraction: 77/6
Now again, you have to make the denominator to 30
77/6 x 5 = 385/30
Now subtract 385/30 - 272/30
This equals 113/30
Now turn this back into a mixed fraction:
3 23/30
The answer is 3 23/30
This process is basically the same for all the other questions.