Answer:
4x+9
Step-by-step explanation:
Perimeter=side+side
Therefore, 5+5+x+1+x+1+2x-3
so (10)+(2x+2)+(2x-3)
= 9+4x
You don't need to start with the greater number. Either order of numbers will work because addition had a communitive property, meaning it can be added in any order to get the same answer.
Answer:
The side lengths of Figure A prime are 3 times the side lengths of Figure A.
Step-by-step explanation:
Answer:
<h3>The estimate would be 3-0= nothing, so her answer is not reasonable.</h3>
Step-by-step explanation:
Given the expression written by Elizabeth as 3.3 - 0.21= 1.2, to check if Elizabeth expression is reasonable or not, we need to check if her answer is close to or equal to the answer of the diiferebce between 3.3 - 0.21.
Converting 3.3 and 0.21 to fraction
3.3 = 33/10
0.21 = 21/100
Taking the difference of both fractions

Hence 3.3 - 0.21 = 3.09 ≈ 3.0 (to nearest whole number). Comparing Elizabeth answer which is 1.2 to the answer f=gotten, it can be seen that her answer is far from the right answer with a difference of about 1.8 (3.0-1.2). <u>This large difference makes Elizabeth answer unreasonable.</u>
Answer:
4n = 160°
Step-by-step explanation:
Sum of angles on a straight line is 180°
20 + 3n + n = 180
4n = 180 - 20
4n = 160°