D=dimes
q=quarters
d + q = 20
.10d + .25q = 3.05
d=-q + 20
.10(-q + 20) +.25q = 3.05
-.10q + 2 + .25 = 3.05
.15q + 2 = 3.05
.15q + 2 - 2 = 3.05 - 2
.15q = 1.05
.15q/.15 = 1.05/.15
q = 7
d + 7 = 20
d + 7 - 7 = 20 - 7
d = 13
Sally has 7 quarters and 13 dimes.
Hope this helps!
Answer:
Answer 2
Step-by-step explanation:
the number are being added together based on their position
Answer:
B
Step-by-step explanation:
15x-12<15x (distribute the 3) so it becomes 15x-13
-12<0 (group like terms)
Answer:
yes it is a right triangle if you look closely at triangle ABC there is a right triangle mark the little square
Answer:

Step-by-step explanation:
3 - 2x > −5
- 3 - 3
_________

Whenever you divide\multiply by a negative, you reverse the inequality symbol.
** The above answer is written in reverse, which is the exact same result.
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