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zmey [24]
3 years ago
13

Write and solve an equation to determine the measures of the angles in each

Mathematics
1 answer:
Anarel [89]3 years ago
5 0

Answer:

9. x = 45°

10. x = 55°

11. x = 9°

Step-by-step explanation:

9. \: x + x + 2x = 180 \\ 4x = 180 \\ x =  \frac{180}{4}  \\ x = 45

10. \: x + (x - 2) + 72 = 180 \\ x + x - 2 + 72 = 180 \\ 2x + 70 = 180 \\ 2x = 180 - 70 \\ 2x = 110 \\ x =  \frac{110}{2}  \\ x = 55 \\

11. \: 4x + 3x + 13x = 180 \\ 20x = 180 \\ x =  \frac{180}{20}  \\ x = 9 \\

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1. f(x) = x(x-6)(x+3)
maks197457 [2]

Answer:

x3squared-3x2squared-18x

Step-by-step explanation:

1 Expand by distributing terms.

({x}^{2}-6x)(x+3)(x

​2

​​ −6x)(x+3)

2 Use the FOIL method: (a+b)(c+d)=ac+ad+bc+bd(a+b)(c+d)=ac+ad+bc+bd.

{x}^{3}+3{x}^{2}-6{x}^{2}-18xx

​3

​​ +3x

​2

​​ −6x

​2

​​ −18x

3 Collect like terms.

{x}^{3}+(3{x}^{2}-6{x}^{2})-18xx

​3

​​ +(3x

​2

​​ −6x

​2

​​ )−18x

4 Simplify.

{x}^{3}-3{x}^{2}-18xx

​3

​​ −3x

​2

​​ −18x

5 0
3 years ago
This is due tomorrow if someone could help me that would be great <3
kifflom [539]

<u>Hope this helped!</u>

<u>First Row</u>

\frac{5}{18}

\frac{10}{21}

\frac{9}{40}

6

5\frac{1}{3}

(this one is already done)

<u>Second Row</u>

4\frac{4}{9}

5\frac{1}{16}

\frac{13}{18}

6\frac{1}{4}

11\frac{2}{3}

5 0
3 years ago
Which mapping shows a function
Alja [10]
The second one because there is all the inputs are different. There is one input for every output.
4 0
3 years ago
PLEASE HELP ASAP!!!<br> best correct answer I will mark brainliest!
notka56 [123]

Answer:

The one on the right

Step-by-step explanation:

The height on the right one matches the height on the net, unlike the left one

4 0
3 years ago
What is the solution to the system of equations? O (-6,-) O (-2, 6) O (6,2) O (-2,-6)​
damaskus [11]

Answer:

Option (1)

Step-by-step explanation:

System of equations is represented by two straight lines on a graph.

And solution of the system of equations is the point of intersection of these lines.

From the graph attached, two straight lines represent the system of equations.

And the point of intersection of these lines is the solution.

Therefore, solution of the system of equations will be (-6, -2).

Option (1) will be the correct option.

4 0
3 years ago
Read 2 more answers
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