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2 years ago

What is the value of x in the equation 5(3x + 4) = 23

Mathematics

1 answer:

abruzzese [7]2 years ago

4 0

5(3x+4)=23

15x+20=23

15x=23-20

15x=3

x=3/15

x=1/5=0.2

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Solve using quadratic equation: 6x^2 + 7x +2=0

Alika [10]

Step 1: Factor left side of equation.

(3x+2)(2x+1)=0

Step 2: Set factors equal to 0.

3x+2=0 or 2x+1=0

x=−23 or x=−12

Answer:

x=−23 or x=−12

3 0

3 years ago

Find the length of arc AD. Use 3.14 for .

Alexxandr [17]

Answer:

Length of arc AD = 15.7 cm

Step-by-step explanation:

Length of arc = $\frac{\theta}{360}(2\pi r)$

Here, θ = Central angle subtended by the arc

r = radius of the circle

From the picture attached,

Central angle subtended by arc AD = 360° - (180° + 66.4°)

= 113.6°

Length of arc AD = $\frac{(113.6)}{360}(2\pi )(7.9)$

= $\frac{113.6}{360}(2)(3.14)(7.9)$

= 15.655 cm

≈ 15.7 cm

Length of arc AD = 15.7 cm

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2 years ago

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mash [69]

Answer:

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Step-by-step explanation:

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2 years ago

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katen-ka-za [31]

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Ilia_Sergeevich [38]

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3 years ago