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grigory [225]
4 years ago
15

I am in algebra 1, please help i am so lost :(

Mathematics
1 answer:
In-s [12.5K]4 years ago
8 0
The correct answer would be #2
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25 + 18-6-1............​
ch4aika [34]

Answer: 36

Step-by-step explanation:

25 + 18 - 6 - 1

25 + 18 = 43

43 - 6 - 1

43 - 6 = 37

37 - 1 = 36

7 0
3 years ago
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Solve: IX multiplied by XII. Show your answer as a Roman Numeral.
GaryK [48]
9 times 12 is 108

CVIII



6 0
3 years ago
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If sin θ = 3 over 7 and tan θ < 0, what is the value of cos θ?
AnnZ [28]
if\ \sin\Theta \ \textgreater \  0\ and\ \tan\Theta \ \textless \  0\ then\ \Theta\in\underbrace{(90^o;\ 180^o)}_{\left(\dfrac{\pi}{2};\ \pi\right)}\\\\therefore\ \cos\Theta \ \textless \  0.

\text{Use:}\ \sin^2x+\cos^2x=1\\\\\left(\dfrac{3}{7}\right)^2+\cos^2\Theta=1\\\\\dfrac{9}{49}+\cos^2\Theta=1\ \ \ |-\dfrac{9}{49}\\\\\cos^2\Theta=\dfrac{40}{49}\to\cos\Theta=-\sqrt{\dfrac{40}{49}}\\\\\cos\Theta=-\dfrac{\sqrt{40}}{\sqrt{49}}\\\\\cos\Theta=-\dfrac{\sqrt{4\cdot10}}{7}\\\\\boxed{\cos\Theta=-\dfrac{2\sqrt{10}}{7}}
8 0
4 years ago
Please help (speed practice)
igomit [66]

Answer:

3.5hrs

Step-by-step explanation:

Speed=80km/hr

distance=400km

time=x

time=<u>distance</u>

speed

time=<u>4</u><u>0</u><u>0</u><u>k</u><u>m</u>

80km/hr

T=5hrs

6 0
3 years ago
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Write 0.2121 as a fraction pls faster
mojhsa [17]

Answer:

\frac{21}{100} can be a fraction you can use

6 0
3 years ago
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