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Doss [256]
3 years ago
13

What is the first step in solving the equation: 3(x+2) = 12?

Mathematics
1 answer:
yanalaym [24]3 years ago
4 0

Answer:

Divide by 3 on both sides.

Step-by-step explanation:

Original Expression: 3(x+2) = 12

Divide by 3 on both sides: x+2 = 4

Subtract 2 from both sides: x=2

Let me know if this helps!

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If angle ABC is one degree less than three times angle ABD and angle DBC=47 find each measure
Contact [7]

It has not been indicated whether the figure in the questions is a triangle or a quadrilateral. Irrespective of the shape, this can be solved. The two possible shapes and angles have been indicated in the attached image.

Now, from the information given we can infer that there is a line BD that cuts angle ABC in two parts: angle ABD and angle DBC

⇒ Angle ABC = Angle ABD + Angle DBC

Also, we know that angle ABC is 1 degree less than 3 times the angle ABD, and that angle DBC is 47 degree

Let angle ABD be x

⇒ Angle ABC = 3x-1

Also, Angle ABC = Angle ABD + Angle DBC

Substituting the values in the above equations

⇒ 3x-1 = x+47

⇒ 2x = 48

⇒ x = 24

So angle ABD = 24 degree, and angle ABC = 3(24)-1 = 71-1 = 71 degree

8 0
3 years ago
A wave has frequency of 10 Hz and a speed of 30 m/s. What is the wavelength of the<br>wave?​
ladessa [460]

Answer:

3

Step-by-step explanation:

Wavelength is usually denoted as letter lambda (λ); it is equal to the speed (v) of a wave train in a medium divided by its frequency (f): λ = v/f. Waves of different wavelengths.

formula: λ = v/f

solution: λ= 30m/s / 10Hz

= 3

8 0
3 years ago
A Freight train is traveling 30 miles per hour. An automobile starts out from the same place 1 hour later and overtakes the trai
Mazyrski [523]
40 I believe because the space of the auto mobile catching up to the train is 4 hours. 4 times 30 is 120 miles so u need to figure out a number that can reach 120 in three hours. 3 times 40 is 120
5 0
3 years ago
If a escape room party has 16 participants and 4 escape puzzles.How many staff are needed?
Anna35 [415]

Answer:

12

Step-by-step explanation:

4 0
3 years ago
3y^4/3y^2-6=10 please help I will.mark it as the brainliest answer!​
Korolek [52]
Y=4 or -4
Explanation: trust me bro
6 0
3 years ago
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