Step-by-step explanation:
b. 3x + 7y = 7
b. 3x + 7y = 75x − 7y = −63
Both the equations have common coordinate point (-7,4)
3x + 7y = 7
LHS = 3(-4)+7(4)= -21+28= 7. RHS = 7
Therefore, the equation satisfies.
5x − 7y = −63
LHS = 5(-7)-7(4) = -35-28= -63. RHS = -63
Therefore, the equation satisfies.
Answer: 12 red balls must be added
Step-by-step explanation:
Starting out with 15 balls, 6 red implies 9 blue. If blue remains 9, then we expect red to be 18 for a probability at 2/3. 18-6 = 12
The picture in the attached figure
we know that
if m ∠DAB=23.5°
then
arc DB=23.5°------> by central angle
the answer isarc DB=23.5°
Answer:
Paula bought 5/12 pounds more of green grapes.
Step-by-step explanation:
Make the denominators the same
3/4 * 3/3 = 9/12
1/3 * 4/4 = 4/12
Subtract the fractions.
9/12 - 4/12 = 5/12
Paula bought 5/12 pounds more of green grapes.
Answer:
(2z)^3 or 8z^3
Step-by-step explanation:
"double z:" 2z
"raise the result (2z) to the third power:" (2z)^3 or 8z^3