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densk [106]
3 years ago
15

Can someone please explain!! Evaluate each expression for r= -3 and s= 5. r=-3 Answer=

Mathematics
1 answer:
olga nikolaevna [1]3 years ago
5 0
It is asking you to substitute or plug in the values. 

Example:

 Evaluate 3r(s+3) if r = -3 and s = 5

See that r? It means that you put in -3 in place of the r, and you put 5 in place of the s so it looks like this:

3*-3(5+3)

Now solve that using order of operations and you should get 
-9*(5+3)  (don't forget that your'e distributing here FIRST then add)

-45+-27

-72

That's how you solve an expression like that. This is only an EXAMPLE. Hope it helped.

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mrs_skeptik [129]
1 + 2 + 2^{2} + 2^{3} + 2^{x} = 1023 \\3 + 4 + 8 + 2^{x} = 1023 \\7 + 8 + 2^{x} = 1023 \\15 + 2^{x} = 1023 \\2^{x} = 1023 - 15 \\2^{x} = 1008 \ln(2^{x}) = ln(1008) \\xln(2) = ln(16 * 8 * 7) \\xln(2) = ln(2^{4} * 2^{3} * 7) \\\frac{xln(2)}{ln(2)} = \frac{4ln(2) + 2ln(3) + ln(7)}{ln(2)} \\x = 4 + \frac{2ln(3)}{ln(2)} + \frac{ln(7)}{ln(2)}
5 0
4 years ago
a triangle has angles the measure 36 degrees and 25 degrees what is the measure off the third angle?​
Angelina_Jolie [31]

36 + 25 = 61

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119

All triangles angles should add up to 180

8 0
3 years ago
Pls click on me I need help( I’m trying to show my mom I’m smart
galben [10]

Answer:

30

Step-by-step explanation:

30 because 15/20=30/40

8 0
3 years ago
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Number 4. List all possible rational zeros of g(x)=2x^3 -6x^2 +x-9
Lemur [1.5K]

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3 years ago
A function has the function rule y = -7 x - 2. If the input is -4, what is the output? 26 -30 -26 14
GaryK [48]

Answer:

26

Step-by-step explanation:

Since the input is -4, x = -4. The equation then is y = -7(-4) -2

A negative times a negative is a positive, so -7 times -4 is 28.

Now the equation reads y = 28 - 2

Then obviously you just subtract the two and then you get 26.

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4 years ago
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