Answer:
Baking a cake is a chemical change.
Step-by-step explanation:
The baking powder or baking soda will undergo a chemical reaction. The heat helps baking powder or soda produce tiny bubbles of gas which makes the cake light and fluffy. That's why chemical reactions are involved in baking a cake.
Substitute the 2x+2 for y in the first equation:
-4x - (2x+2) = 4
Distribute that negative:
-4x - 2x - 2 = 4
Combine like terms:
-6x - 2 = 4
Add 2 to both sides:
-6x = 6
Divide by -6:
x = -1
Substitute that -1 into either equation:
y= 2x + 2
y= 2(-1) + 2
y= -2 + 2
y= 0
Answer:
x = -1
y = 0
Answer: i will give you the first couple answers and how i got it you do the rest yourself. You need to combine like terms so add or subtract only the same numbers with the same sign. if the sign has no number imagine an invisible 1 before it. so for example the first one would be (4A) all i did was add the A together to get that i will also give you the last answer for another example. the problem is 20-9z+4y+7-x. all you gotta do is add 7 to the 20 add -9+-x and leave the 4y alone since there is no other y the answer would be 27-10z+4y+
Step-by-step explanation:
Answer:
I think that the first one is not a rhombus but the last two are.
Answer:
The virtical angle theorem is that virtical angles are congruent, or equal. A vertical angle is like the angles in an X. The opposite angles are congruent, like in the picture, it is the unknown angle and the angle touching it.