Answer:
Step-by-step explanation:
Answer:
3rd option
Step-by-step explanation:
the denominator cannot be zero as this would make the expression undefined.
equating the denominator to zero and solving gives the values that x cannot be.
x² - 7x - 18 = 0 ← in standard form
(x - 9)(x + 2) = 0 ← in factored form
equate each factor to zero and solve for x
x - 9 = 0 ⇒ x = 9
x + 2 = 0 ⇒ x = - 2
then
x = - 2, x = 9 ← are the excluded values
Answer:
6/9 = 21/x
to 2/3 = 21/x (6/9 equals two thirds)
to 2/3*21 = x (by multiplying both sides by 21)
so x= 14 or 1.50 apple
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
The number was it 74 cause that was easy