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malfutka [58]
3 years ago
8

Solve for the value of z.

Mathematics
1 answer:
Yuki888 [10]3 years ago
4 0

z=18

3z+4+2z-4+90=180

5z+4-4+90=180

5z+90=180

5z=90

z=18

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Simplify the following rational expression without using a calculator: (12².6³.5²)/(18².15).
prohojiy [21]

Answer:

  160

Step-by-step explanation:

\dfrac{12^2\cdot 6^3\cdot 5^2}{18^2\cdot 15}=\dfrac{(2^2\cdot 3)^2\cdot (2\cdot 3)^3\cdot 5^2}{(2\cdot 3^2)^2\cdot (3\cdot 5)}\\\\=\dfrac{(2^4)(3^2)(2^3)(3^3)(5^2)}{(2^2)(3^4)(3)(5)}=(2^{4+3-2})(3^{2+3-4-1})(5^{2-1})=32\cdot 5\\\\=\bf{160}

8 0
3 years ago
What happened to the tutors?​
saveliy_v [14]

Answer:

The Tudor ended when Henry's grand daughter Elizabeth I died

Step-by-step explanation:

7 0
3 years ago
GIVING BRAINLIEST Write a proportion that could be used to solve for each variable. Then solve. 16 walls in 40 hours 3 walls in
soldi70 [24.7K]

The proportion that could be used to solve for the variable is \frac{16}{40}=\frac{3}{h} ; h = 7.5 ⇒ answer b

Step-by-step explanation:

A proportional relationship: one variable is always a constant value times the other, that constant is called the constant of proportionality

  • y = k x is the equation of the proportional relationship
  • We can write the proportional relationship in the form \frac{y_{1}}{x_{1}}=\frac{y_{2}}{x_{2}}=k

The number of walls and the number of hours are increased or decreased together

∴ The number of walls and the number of hours are proportion

∵ 16 walls in 40 hours

∵ 3 walls in h hours

- By using the second rule above

∴ \frac{16}{40}=\frac{3}{h}

The proportion that could be used to solve for the variable is  \frac{16}{40}=\frac{3}{h}

Let us solve it to find h

∵  \frac{16}{40}=\frac{3}{h}

- By using cross multiplication

∴ 16 × h = 3 × 40

∴ 16 h = 120

- Divide both sides by 16

∴ h = 7.5

The value of h is 7.5 hours

Learn more:

You can learn more about the proportion in brainly.com/question/10708697

#LearnwithBrainly

4 0
3 years ago
A stainless steel cylinder has a diameter of 9 cm and a height of 19 cm. What is the approximate volume of the container?
Whitepunk [10]

Answer:

I think the answer is C. 1209 cm^3

Step-by-step explanation:

volume of a cylinder= πr^r2xh

radius = 1/2xdiameter

r = 1/2× 9

r = 4.5cm

height. = 19cm

volume of the cylinder = 22/7 x (4.5)^2 x 19

= 1208.73cm^3

= 1209 cm^3 ( to the nearest whole number)

6 0
3 years ago
What is the answer? Please answer soon!
pshichka [43]
B because the variable (x) is not raised to any power.
4 0
3 years ago
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