There are 52 weeks in a year, so 52x represents how much she earns in a year.
Factorizing an expression involves writing the expression in simpler forms
The values of z are
or ![z=4](https://tex.z-dn.net/?f=z%3D4)
The equation is given as:
![5z^2 - 21z + 4 = 0](https://tex.z-dn.net/?f=5z%5E2%20-%2021z%20%2B%204%20%3D%200)
Expand the equation
![5z^2 - 20z -z + 4 = 0](https://tex.z-dn.net/?f=5z%5E2%20-%2020z%20-z%20%2B%204%20%3D%200)
Factorize the expression:
![5z(z - 4) -1(z - 4) = 0](https://tex.z-dn.net/?f=5z%28z%20-%204%29%20-1%28z%20-%204%29%20%3D%200)
Factor out z - 4
![(5z - 1)(z - 4) = 0](https://tex.z-dn.net/?f=%285z%20-%201%29%28z%20-%204%29%20%3D%200)
Split
or ![z - 4 = 0](https://tex.z-dn.net/?f=z%20-%204%20%3D%200)
Solve for z
or ![z=4](https://tex.z-dn.net/?f=z%3D4)
Hence, the values of z are
or ![z=4](https://tex.z-dn.net/?f=z%3D4)
Read more about factorization at:
brainly.com/question/11579257
Answer:
20
Step-by-step explanation:
12 divided by 3/5 is equal to 20
Answer:
Area of circle R = 75π un² or ≈235.5 un²
Step-by-step explanation:
The problem says that m∠TRS = 120º. The total number of degrees in a circle is 360º. 120º is a third of 360º. Therefore, we can prove that the shaded sector is a third of the circle.
The problem then says that the area of the shaded sector is 25π and we have to calculate the area of the entire circle. Since we already know that the shaded sector is a third of the circle, we can simply multiply 25π by 3 in order to calculate the area of t he entire circle.
25π × 3 = 75π.
Area of circle R = 75π un² or ≈235.5 un²
Answer:
4.25
Step-by-step explanation: