Answer:
see explanation
Step-by-step explanation:
(a) Add the parts of the ratio, 1 + 3 = 4 parts
Divide 260 by 4 to find the value of one part of the ratio.
260 ÷ 4 = 65 ← value of 1 part of the ratio, thus
3 parts = 3 × 65 = 195
260 in the ratio 1 : 3 = 65 : 195
(b)
Given
3 : 5 ← divide both parts of the ratio by 3
:
= 1 :
→ A
Answer:
the correct answer is 7 and 9
Answer:
78
Step-by-step explanation:
Let x be the score on the next test
We are averaging 6 tests and want an average of 75
( 82+91+38+78+83+x) /6 = 75
Multiply each side by 6
( 82+91+38+78+83+x) = 75*6
( 82+91+38+78+83+x) =450
Combine like terms
x+372 = 450
Subtract 372 from each side
x+372-372 = 450-372
x =78
Answer:
dont know
Step-by-step explanation:
sorry fam