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3 years ago

Please help guys.......equation practice

Mathematics

1 answer:

nignag [31]3 years ago

7 0

Answer:

Step-by-step explanation:

m∠AOC = 180 as it is straight line

m∠AOC = m∠AOB + m∠BOC

m∠AOB + m∠BOC = 180

3x + 124 + 6x + 29 = 180

9x + 153 = 180

9x = 180 - 153

9x = 27

x = 27/9

x = 3

m∠BOC = 6x +29 = 6*3 + 29 = 18 +29 = 47

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I PROMISE BRAINLIST... IT'S SIMPLE PLEASEEEE

ser-zykov [4K]

Answer:

11. 3^2 • 3^5 < 3^8

12. 3^3 • 3^3 > 3^5

13. Option C.

Step-by-step explanation:

11. Which of the following expressions is true?

A. 4^3• 4^4 = 412

4^3• 4^4 = 4^7 = 16384 ❌

B. 5^2 • 5^3 > 5^5

5^2 • 5^3 = 5^5 ❌

C. 3^2 • 3^5 < 3^8

3^2 • 35 = 315 ✔️

D. 5^2 • 54 = 58

5^2 • 54 = 1350 ❌

12. Which of the following expressions is true?

A. 8^3 • 8^2 < 8^4

8^3 • 8^2 = 8^5 ❌

B. 4^4 • 4^4 = 4^16

4^4 • 4^4 = 4^8 ❌

C. 2^2 • 2^6 < 2^8

2^2 • 2^6 = 2^8 ❌

D. 3^3 • 3^3 > 3^5

3^3 • 3^3 = 3^6 ✔️

13. Write the value of the expression: 3^4/3^4

3^4/3^4 = 1

The correct answer is C. 1 ✔️

4 0

3 years ago

In 2013 approximately 1.6 million students took the critical reading portion of the sat exam the mean score modal score and the

Citrus2011 [14]

Onions are good for you !! :)))

6 0

3 years ago

A phone company offers two monthly plans. Plan A costs

Rus_ich [418]

For plan A it will only take five minutes to amount to $20.50

Plan B will need 30 min to cost the same as plan A $20.50

3 0

3 years ago

Read 2 more answers

Which is an equation?<br> a. 17 + x<br> b. 45 / x <br> c. 20x = 200<br> d. 90 - x

eimsori [14]

C. 20x = 200 because an equation always has an equal sign and other three are expressions because it doesn't have any signs, hoped this helped:)

6 0

3 years ago

A student needs to select 3 books from 3 different mathematics, 3 different physics and 1 history books. What is the probability

Gnesinka [82]

Answer:

Probability that one of them is mathematics and other two are either physics or history books = 0.51

Step-by-step explanation:

Given - A student needs to select 3 books from 3 different mathematics, 3 different physics and 1 history books.

To find - What is the probability one of them is mathematics and other two are either physics or history books ?

Solution -

Given that,

A student needs to select 3 books from 3 different mathematics, 3 different physics and 1 history books.

So,

Total number of books = 3 + 3 + 1 = 7

The student has to select 3 books

So, Total number of ways = $^{7} C_{3}$ = 35

So,

Probability that one of them is mathematics and other two are either physics or history books is -

= $\frac{^{3} C_{1}. ^{4} C_{2} }{^{7} C_{3}}$

= $\frac{(3)(6)}{35}$

= $\frac{18}{35}$

= 0.51

⇒Probability that one of them is mathematics and other two are either physics or history books = 0.51

8 0

2 years ago

Please help guys.......​equation practice

Please help guys.......equation practice