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iris [78.8K]
3 years ago
15

It's question B as I've done A please help

Mathematics
1 answer:
Hatshy [7]3 years ago
4 0
Its easy.use cos rule.
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Divde the square roots of 121 by the product of the Square roots of 25 and 4
Pavel [41]

Answer:

1.1

Step-by-step explanation:

\frac{ \sqrt{121} }{ \sqrt{25} \times  \sqrt{4}  }  =  \frac{11}{5 \times 2}  =  \frac{11}{10}  = 1.1

7 0
3 years ago
Solve for r write the answer in simplified form<br><br> 7 = - 7r
alex41 [277]

Answer:

r = -1

Step-by-step explanation:

To get r isolated, you have to divide each side by -7

7 divided by -7 is -1, therefore r = -1

3 0
3 years ago
I need to know the answer to this problem. <br><img src="https://tex.z-dn.net/?f=2%20-%202%20%5Ctimes%203%20%2B%203%20%3D%20%20"
algol13
2 - 2 x 3 + 3 

= 2 - 6 + 3

= -4 + 3

= - 1
6 0
4 years ago
What is a point-slope equation of the line with slope -10 that goes through the point (1,4)
KatRina [158]
\bf (\stackrel{x_1}{1}~,~\stackrel{y_1}{4})\qquad \qquad \qquad &#10;% slope  = m&#10;slope =  m\implies -10&#10;\\\\\\&#10;% point-slope intercept&#10;\stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-4=-10(x-1)
8 0
3 years ago
Read 2 more answers
I swear this is not a quiz it's a lesson and I just finished the quiz and I got to 70
I am Lyosha [343]

Step-by-step explanation:

Any coordinates in the shaded area are solutions. Any coordinates on the line are not a solution due to it being dashed. Anything in the non-shaded area is also not a solution. You can always check if you are right by plugging in the numbers.

Example: (1, -2)

-2 < 0.5(1) + 2

-2 < 0.5 + 2

-2 < 2.5

True, -2 is less than 2.5.

Another Example: (-2, 1)

1 < 0.5(-2) + 2

1 < -1 + 2

1 < 1

False, 1 is not less than itself.

4 0
3 years ago
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