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Mashcka [7]
3 years ago
8

Can anyone help me with this problem?3a=9a^2-30​

Mathematics
2 answers:
Mekhanik [1.2K]3 years ago
7 0

Answer:

X1 = 2 X= -\frac{5}{3}

Step-by-step explanation:

You must pass the 3 a to the other side in negative and use the quadratic formula

Roman55 [17]3 years ago
4 0

Answer:

Step-by-step explanation:

X1 = 2 X= -\frac{5}{3}

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What is the simplest form of the expression √1/144?
natita [175]
√ (1/144) = 1/12 
Because √1 = 1 ; √144 = 12 
⇒ C
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the owner of two hotels is ordering towels. he bought 11 hand towels and 22 bath towels for his hotel in Oxford, spending a tota
Blizzard [7]

Answer:

$4.25

Step-by-step explanation:

11+22+54+14=112

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476÷112=$4.25

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3 years ago
The volume of a cone varies jointly with the area of the base and the height. When the area of the base is 27 cm2 and the height
Tomtit [17]
Cone=cup:
V=124<span>cm^3.
h=12cm
V=Bh
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r^2=B/π
r=√(B/π)=1,81 cm
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3 0
3 years ago
In △ABC, m∠A=39°, a=11, and b=13. Find c to the nearest tenth.
Talja [164]

For this problem, we are going to use the <em>law of sines</em>, which states:

\dfrac{\sin{A}}{a} = \dfrac{\sin{B}}{b} = \dfrac{\sin{C}}{c}


In this case, we have an angle and two sides, and we are trying to look for the third side. First, we have to find the angle which corresponds with the second side, B. Then, we can find the third side. Using the law of sines, we can find:

\dfrac{\sin{39^{\circ}}}{11} = \dfrac{\sin{B}}{13}


We can use this to solve for B:

13 \cdot \dfrac{\sin{39^{\circ}}}{11} = \sin{B}

B = \sin^{-1}{\Big(13 \cdot \dfrac{\sin{39^{\circ}}}{11}\Big)} \approx 48.1


Now, we can find C:

C = 180^{\circ} - 48.1^{\circ} - 39^{\circ} = 92.9^{\circ}


Using this, we can find c:

\dfrac{\sin{39^{\circ}}}{11} = \dfrac{\sin{92.9^{\circ}}}{c}

c = \dfrac{11\sin{92.9^{\circ}}}{\sin{39^{\circ}}} \approx \boxed{17.5}


c is approximately 17.5.

8 0
3 years ago
Help!!! Thank you<br> Xxxx
Effectus [21]

Answer: D

Step-by-step explanation:

First I would write out the points of the x and y intercepts and then I would write out an equation in slope-intercept form (y=mx+b). From there I would move my terms accordingly to make it into standard form and compare my answer! Hope this helped!

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