Answer:
9x−c
= 9x + − c
=−c+9x
Step-by-step explanation:
Answer:
2520 cm²
Step-by-step explanation:
9 cm x 8 cm x 5 cm x 7cm = 2520 cm²
Answer:
122.88
Step-by-step explanation:
<u>3072</u>
25
122.88 sorry I forgot how to show all the work I love my calculator but hopefully the answer you need will help.
X= # students who got lower grades
2x+3= # students with grade A
STEP 1:
Add the two sets above equal to 24.
x + (2x + 3)= 24
combine like terms
3x + 3= 24
subtract 3 from both sides
3x= 21
divide both sides by 3
x= 7 (# students lower than A)
STEP 2:
substitute x value from step 1 to find # grade A students
=2x + 3
=2(7) + 3
=14 + 3
=17 (# grade A students)
CHECK:
x + (2x + 3)= 24
7 + 2(7) + 3= 24
7 + 14 + 3= 24
24= 24
ANSWER: There were 17 students with grade A.
Hope this helps! :)
1 yd is equivalent to 3 ft, so 7 times 3 is 21. 21 is greater than 20, so your answer is 7 yd.
