Answer:
D
Step-by-step explanation:
Best answer would be D, nuclear transmutation/transmutation refers to "the action of changing or the state of being changed into another form" the word nuclear radiation is radioactive. it's a good guess I would say.
Answer:
1. The sum of interior angles of a pentagon is 180 but here the sum of angles of this pentagon is 550 . So it is wrong.
2. Angle 145 is equal to the corresponding of angle y. So angle y is 145 degree.So according to opposite angle theorem, angle x is also 145 degree.
Sorry I do not know next question solutions.
Answer:
answer is 9
Step-by-step explanation:
1st method: Proportion
15/100 = n/60
cross-multiply to get:
100n = 900
n = 900/100
n = 9
2nd method: Convert % to Decimal and Multiply
.15 × 60 = 9
First, think of it as 3 different expressions.Go through them one at a time. There is:
-2a(a+b-5) ] +3(-5a+2b) ] +b(6a+b-8)
Multiply everything out.] Multiply everything out. ]Multiply everything out
-2a x a = -2a² ] +3 x -5a = -15a ] +b x 6a = 6ab
-2a x b = -2ab ] +3 x 2b = 6b ] +b x b = b²
-2a x -5 = 10a ] -15a + 2b = -15a+2b ] +b x -8 = -8b -2a² + -2ab + 10a = ] ] 6ab + b² + -8b =
-2a²+-2ab+10a ] ] <span>6ab+b²+-8b
</span>Now add everything up, but before that, remember these algebraic rules:
∞A.S.S. Add Same Signs, meaning positive add positive or negative add negative equals a positive number or 0. E.g 1+1=1 and -1+-2= 1
∞S.I.D. Subtract If Different, meaning a positive number add a negative number always equals a negative number or 0. E.g 1 + -2 = -1
∞You can only add up "similar terms", meaning you can add 'terms' ending in 'a' for example with another 'term' ending in 'a'. However. you cannot add a term ending in 'a' to an 'ab' or an 'a²'.
Following these rules, -2a²+-2ab+10a+-15a+2b+<span>6ab+b²+-8b =
</span>4ab-5a-6b+b²-2a²
Hope that helps you and that it wasn't too tricky to understand. :)
