Answer:
The equivalent expression is 
Step-by-step explanation:
The distributive property says for any numbers <em>a, b c</em>, and <em>d</em>

which basically says you should multiply the coefficient
by every term in the parenthesis to get an equivalent expression.
Applying the distributive proper to the expression
we get:


which is an equivalent expression to
.
Answer:
1. No, not all line segments
2. Yes, quadrilateral
3. Yes, hexagon
4. No, it is not a closed shape.
1. Hexagon, concave
2. Octagon, convex
3. Pentagon, concave
4. Triangle, convex
5. No, not a closed shape
6. Yes
7. No, not all line segments
8. Yes
9. Uploaded in picture
10. Yes, both have exactly four sides
11. Four
12. C. 3
Answer:
195 mL of the 90% solution
Step-by-step explanation:
Let the number of mL of 90% mixture = x
Hence, our equation is
780mL × 15% + x mL × 90% = (780mL + x) 30%
117 + 0.9x = 234 + 0.3x
Collect like terms
0.9x - 0.3x = 234 - 117
0.6x = 117
x = 117/0.6
x = 195 mL
Therefore, You will need 195 mL of the 90% solution
Answer:
16
Step-by-step explanation:
Given:
Ratio of tulips to roses = 2:1
Total number of flowers = 18
To find:
The number of tulips.
Solution:
Let the number of tulips and roses are 2x and x respectively.
According to the question,


Divide both sides by 3.


Now,
Number of tulips 

Therefore, the number of tulips is 12.