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3 years ago

The angles shown below are supplementary:

Mathematics

1 answer:

alina1380 [7]3 years ago

3 0

Answer:

Step-by-step explanation:

supplementary angle=180°

180-60=120°

120°/10=12°

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Expand and Simplify (2x+1)(x-2)(x+3)

NeTakaya

$(2x + 1)(x - 2)(x + 3) \\ = (2x + 1)( {x }^{2} + x - 6) \\ ={2x}^{3} + 2 {x}^{2} -12x + {x}^{2} + x - 6 \\ = 2 {x}^{3} + 3 {x}^{2} - 11x - 6$
hope this would help you

6 0

4 years ago

Help please True or False: Only like terms can be combined.

Tatiana [17]

Answer:

True

Step-by-step explanation:

5 0

3 years ago

Can anyone pls help me in math<3

FinnZ [79.3K]

Answer:

Third number is 12

Step-by-step explanation:

Let $\displaystyle \large{d}$ be common difference & $\displaystyle \large{x}$ be the third number. Set up the following equations:

$\displaystyle \large{x-2d=-2 \to (1)}\\\\\displaystyle \large{x+2d=26 \to (2)}$

Solve the simultaneous equation for x-term:

$\displaystyle \large{2x=24}\\\\\displaystyle \large{x=12}$

Let’s make sure that we get accurately answer. Substitute x = 12 in any equations which I’ll choose (1):

$\displaystyle \large{12-2d=-2}\\\\\displaystyle \large{-2d=-14}\\\\\displaystyle \large{d=7}$

Now add each terms with common difference as 7:

-2+7 = 5

5+7 = 12

12+7 = 19

19+7 = 26

So our pattern is -2, 5, 12, 19, 26. Since the question only asks for third number then the answer is 12

8 0

3 years ago

Given:

anygoal [31]

First off, remember PEMDAS. Then replace the variables with the values.
3(2x3)^2
First distribute the exponent to the value on the inside.
3(4x9)

Then multiply the 4 and 9.
3(36)

After that just distribute the 3.
3x36 = 108.

5 0

2 years ago

What is 2/5 written as a decimal? A. 0.25 B. 0.4 C. 2.5 D. 5.2

amid [387]

$\frac{2}{5}=\frac{2 \times 2}{5 \times 2}=\frac{4}{10}=\boxed{0.4} \Leftarrow \hbox{answer B}$

3 0

4 years ago

Read 2 more answers