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serg [7]
2 years ago
12

Expand & simplify 4 ( x + 5 ) + 5 ( x − 5 )

Mathematics
1 answer:
Fudgin [204]2 years ago
6 0

4(x+5) + 5(x-5)

The first step is to distribute (PEMDAS --> parenthesis)

4x + 20 + 5x - 25      Now combine like terms

9x - 5

Thus, the answer is 9x-5

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Work out the size of angle x
34kurt

Answer:

Let's name the angle right close to 51 as c.

c = 180°-51° since angles on a straight line is equal to 180°.

so c= 129°

so x = 129° since it corresponds to c

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4 years ago
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Cristine's middle school has a total of 900 students and 45 teachers. The local high school has 110 teachers and a student-teach
frozen [14]
Write and solve an equation of ratios:

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------------------  = -----------------  
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Cross multiplying, we get (900)(110) / 45, or

                                                                 
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8 0
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29-3x=5x+5<br><br><br> Can you work it out
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Step-by-step explanation:

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Which statements are true about
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3 years ago
2- If A=(3, 4) and B = (7,8), find AB.​
Mice21 [21]

Use distance formula and take this question down, <em><u>easily</u></em>.

Step-by-step explanation:

Distance xy =

\sqrt{ {(x_2 - x_1)   }^{2}  +  {(y_2 - y_1)}^{2} }

Therefore AB

=\sqrt{(7-3)^2 +(8-4)^2}

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