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Papessa [141]
3 years ago
13

Select the correct answer.

Mathematics
2 answers:
ICE Princess25 [194]3 years ago
4 0
What are the choices, it’s blank.
Hunter-Best [27]3 years ago
3 0

Answer: A. would give the same result as the blank space as generally, when you think the answer is A. you should double check that as teachers know that students will always guess A in a pinch.

<h2><em>Hope this helps!    :)</em></h2>

Step-by-step explanation:

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Find the angle between the vectors u=i-9j and v=8i+5j
Katyanochek1 [597]

Answer: \cos^{-1} \left(\frac{-37}{\sqrt{7298}} \right) \approx 115.665^{\circ}

Step-by-step explanation:

u \cdot v=(1)(8)+(-9)(5)=-37\\\\|u|=\sqrt{1^{2}+(-9)^{2}}=\sqrt{82}\\\\|v|=\sqrt{8^{2}+5^{2}}=\sqrt{89}\\\\\cos \theta=\frac{-37}{\sqrt{82}\sqrt{89}}\\\\\theta=\cos^{-1} \left(\frac{-37}{\sqrt{82}\sqrt{89}} \right)\\\\\theta=\boxed{\cos^{-1} \left(\frac{-37}{\sqrt{7298}} \right) \approx 115.665^{\circ}}

7 0
2 years ago
Using elimination method, what will be the value of y after solving -x - y = 5 and -x + 4y = 15?
natka813 [3]

9514 1404 393

Answer:

  y = 2

Step-by-step explanation:

The variable x can be eliminated by subtracting the first equation from the second.

  (-x +4y) -(-x -y) = (15) -(5)

  5y = 10 . . . . . . . simplify

  y = 2 . . . . . . . . . divide by 5

4 0
2 years ago
What's 7/8 + 7/12, no pictures
OverLord2011 [107]
7/8 + 7/12 = 35/24 = 1 11/24
6 0
2 years ago
Read 2 more answers
Which logarithmic equation is equivalent to the exponential equation below? E^a=28.37
Alex_Xolod [135]
1. To solve this problem, it is important to know that<span> the logarithmic functions  and the exponential functions are inverse. Then, you have:
</span><span> 
 e^a=28.37
</span><span> a=ln(28.37)
</span><span> 
 2. Therefore: </span><span>Which logarithmic equation is equivalent to the exponential equation e^a=28.37? A</span><span>s you can see, the answer for this question is:
</span><span>
 a=ln(28.37)</span>
7 0
3 years ago
Read 2 more answers
Help me please the last question
Assoli18 [71]

Answer:

17/7, y = 21 * (17/7), 51

Step-by-step explanation:

so to find what x is, we need to find how much it rises in 1 minute. we do that by dividing 17 by 7. we then see that we want to find how much is it filled in 21 minutes. we then multiply (17/7) by 21 to find the y which is 51

5 0
3 years ago
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