Given:
420 tropical fishes
angel fish = x
parrot fish = 6x
x + y = 420
y = 6x Choice D.
x + y = 420
y = 6x
x + 6x = 420
7x = 420
x = 420 / 7
x = 60 number of angelfish
y = 6x
y = 6(60)
y = 360 number of parrot fish
Answer:
d. 45%
Step-by-step explanation:
According to the frequency table there are 30 sudents who like rock in grades 9-10 and 25 students that like rock and are in grades 11-12.
25 ÷ 55 = n ÷ 100
25 · 100 = 55 · n
2500 ÷ 55 = n n = 45.454545 n = 45%
55 is the total amount of students that like rock
25 is the total amount of students that like rock in grades 11-12
100 is the total percentage
If I'm reading your question correctly: "<span>F(x)=7x+9/8x-9 when -f(x)," then all you have to do to find -f(x) would be to put a negative sign in front of ALL
of 7x + 9 / (8x-9):
9
- f(x) = -7x - --------
8x-9</span>
Answer: The given statement is FALSE.
Step-by-step explanation: Given that Mrs Adams buys 4 bananas and 6 apples.
We are to check whether the following statement is true or false :
" the ratio of bananas to apples is 6 : 4".
The number of bananas, b = 4
and
the number of apples, a = 6.
Therefore, the ratio of number of bananas to number of apples is given by
![b:a\\\\=\dfrac{b}{a}\\\\=\dfrac{4}{6}\\\\=\dfrac{2}{3}\\\\=2:3\neq6:4.](https://tex.z-dn.net/?f=b%3Aa%5C%5C%5C%5C%3D%5Cdfrac%7Bb%7D%7Ba%7D%5C%5C%5C%5C%3D%5Cdfrac%7B4%7D%7B6%7D%5C%5C%5C%5C%3D%5Cdfrac%7B2%7D%7B3%7D%5C%5C%5C%5C%3D2%3A3%5Cneq6%3A4.)
That is, the ratio of number of bananas to number of apples is 2 : 3.
Thus, the given statement is FALSE.