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2 years ago

Solve for x. 39=3x simplify has much has you can

Mathematics

2 answers:

Sunny_sXe [5.5K]2 years ago

6 0

Answer:

x=13

Step-by-step explanation:

Divide both sides by three to get rid of the three this makes x=13

IgorLugansk [536]2 years ago

3 0

Answer:

x = 13

Step-by-step explanation:

Divide 3 by 39 to simplify this equation.

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Which equation represents a line which is parallel to the line 8y-3x=-8

marin [14]

First, we need to make the equation given to be in the form;

y=mx + b

where m is the slope and b is the intercept

8y - 3x = -8

Add 2x to both-side of the equation

8y = 3x - 8

Divide through the equation by 8

y = 3/8 x -1

comparing the above with y =mx + b

m = 3/8

slope of parallel equations are equal

From the options given the only equation with slope 3/8 is;

y= 3/8 x + 8

$y=\frac{3}{8}x\text{ + 8}$

The above equation of the line is parallel to 8y - 3x = -8

7 0

8 months ago

1)a chord of length 18cm midway the radius of a circle. calculate the radius of the circle correct to 1d.p. 2)if two parallel ch

kykrilka [37]

Part 1:

Given that the length of the chord is 18 cm and the chord is midway the radius of the circle.

Thus, half the angle formed by the chord at the centre of the circle is given by:

$\cos\theta=\frac{\left( \frac{1}{2} r\right)}{r}= \frac{1}{2} \\ \\ \Rightarrow\theta=\cos^{-1}\left( \frac{1}{2} \right)=60^o$

Now,

$\sin60^o= \frac{9}{r} \\ \\ \Rightarrow r= \frac{9}{\sin60^o} =10.392$

Therefore, the radius of the circle is 10.4 cm to 1 d.p.

Part 2I:

Given that the radius of the circle is 10 cm and the length of chord AB is 8 cm. Thus, half the length of the chord is 4cm. Let the distance of the mid-point O to /AB/ be x and half the angle formed by the chord at the centre of the circle be θ, then

$\sin\theta= \frac{4}{10} = \frac{2}{5} \\ \\ \theta=\sin^{-1}\left( \frac{2}{5} \right)=23.6^o$

Now,

$\cos23.6^o= \frac{x}{10} \\ \\ \Rightarrow x=10\cos23.6^o=9.165\approx9.2cm$

Part 2II:

Given that the radius of the circle is 10cm and the angle distended is 80 degrees. Let half the length of chord CD be y, then:

$\sin40^o= \frac{y}{10} \\ \\ \\ \Rightarrow y=10\sin40^o=6.428$

Thus, the length of chord CD = 2(6.428) = 12.856 which is approximately 12.9 cm.

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2 years ago

The property taxes on a business office were $2160. what was the tax rate if the business office was valued at $270,000?

ahrayia [7]

Answer:

Use the graphing tool to graph the linear equation.

Step-by-step explanation:

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5 cents per mile if I drive 1000

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If you drive 1000 miles, then you would multiply $0.05 * 1000 miles =$50.

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Answer:

Step-by-step explanation:

i need to see the diagram, to help you

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