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yaroslaw [1]
4 years ago
6

Solve for x. 3x+1=7 What is the root? If there is no root, choose none.

Mathematics
2 answers:
nikdorinn [45]4 years ago
6 0

I think the root of "3x + 1 = 7" is 2...

masha68 [24]4 years ago
6 0

Answer:

The root of the equation is x=2.  

Step-by-step explanation:

Given : Equation 3x+1=7

To find : Solve for x?

Solution :

Step 1 - Write the equation

3x+1=7

Step 2 - Subtract 1 both side,

3x+1-1=7-1

3x=6

Step 3 - Divide the equation by 3,

\frac{3x}{3}=\frac{6}{3}

x=2

Therefore, The root of the equation is x=2.  

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In ΔVWX, {VX} is extended through point X to point Y, m∠VWX = (3x+2)) ∘ , m∠WXY = (6x-19)∘ , and m∠XVW = (x+17)^{\circ}(x+17) ∘
blagie [28]

Answer:

∠XVW = 36°

Step-by-step explanation:

The external angle of a triangle is equal to the sum of the 2 opposite interior angles.

∠WXY is an external angle to the triangle and

∠XVW and ∠VWX are the 2 opposite interior angles, thus

6x - 19 = x + 17 + 3x + 2, that is

6x - 19 = 4x + 19 ( subtract 4x from both sides )

2x - 19 = 19 ( add 19 to both sides )

2x = 38 ( divide both sides by 2 )

x = 19

Hence

∠XVW = x + 17 = 19 + 17 = 36°

4 0
3 years ago
Algebra 2: PLEASE HELP ME!!
vfiekz [6]

Looks more like Trig than Algebra II

They want us to apply the sum angle formula to \sin(x + \frac{5 \pi}{6})

5π/6 is 150°; I find it easier to think in degrees.

When the tangent of x is 3/4 that's a right triangle with opposite 3, adjacent 4 so hypotenuse 5. So a sine of 3/5 and a cosine of 4/5, both positive because we're told x is in the first quadrant.

The sine sum angle formula is

\sin(a+b) = \sin a \cos b + \cos a \sin b

\sin(x+\frac{5\pi}{6}) = \sin x  \cos \frac{5\pi}{6} + \cos x \sin \frac{5\pi}{6}

We know sin 150° = sin 30° = 1/2 and cos 150° = - cos 30° = -√3/2

\sin(x+\frac{5\pi}{6}) = \frac 3 5  (- \sqrt{3}/2)  + \frac 4 5 (1/2)

\sin(x+\frac{5\pi}{6}) = \dfrac{ 4- 3\sqrt{3}}{10}

Third choice

3 0
4 years ago
The area of a rectangle having breadth 2.6m is 18.33 sq.m. Find the<br> length of rectangle.
ladessa [460]

Answer:

Length = 7.05m

Step-by-step explanation:

Breadth is just a fancy word for width. We know that the width is 2.6 m and the total area is 18.33 m². We also know that the formula for the area of a rectangle is l*w, length times width. Remember, we are looking for l.

Set up an equation: l*w=A

Where:

  • l = Length
  • w = Width
  • A = Area

Plug in the known values.

l*w=A

l * 2.6 = 18.33

Solve for l. Isolate the variable by dividing both sides of the equation by 2.6:

l = 7.05

You can easily check your work by finding l*w now that you know both values. Always remember to put the unit back into your answer! So your final answer should be l=7.05 m

4 0
3 years ago
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saul85 [17]
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Explanation:::::
5 0
3 years ago
Please hurry and help me
saw5 [17]
The domain is 1,3,5-3 and the range is -2,-14,2
4 0
3 years ago
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