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yuradex [85]
1 year ago
13

If a₁ = a + 2a +3 and d₂ = 2a + a + 1, what is the value of 2 (d1- d2)?

Mathematics
1 answer:
maria [59]1 year ago
6 0

With the help of equations, we know that the value of equation 2(d1- d2) is 4.

<h3>What is an equation?</h3>
  • A mathematical expression with an equals sign is referred to as an equation.
  • Algebra is widely used in equations.
  • When performing calculations but unsure of the precise amount, algebra is used.
  • The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions.
  • For instance, the equation 3x + 5 = 14 consists of the two equations 3x + 5 and 14, which are separated by the 'equal' sign.

The equations we have are as follows:

  • d1 = a+2a+3
  • d2 = 2a+a+1

After simplifying, d1= 3a+3:

  • d2 = 3a+1
  • 2(d1-d2) = 2(3a+3-3a-1)
  • =2(2)
  • = 4

Therefore, with the help of equations, we know that the value of equation 2(d1- d2) is 4.

To know more about the equation, visit:

brainly.com/question/28937794

#SPJ13

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58 is a composite number because it has more than 3 factors.
Composite numbers are numbers that has 3 or more factors.
Prime numbers are numbers that only has 2 factors.
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3 years ago
really need help on these two questions for geometry, please actually answer it instead of just grabbing points and leaving :'),
egoroff_w [7]

Answer:

Step-by-step explanation:

The diagonals of a rhombus are perpendicular, so ∠AED = 90° and ∠BEC = 90°.

∠DAE = 180° - ∠AED - ∠EDA = 180° - 90° - 35° = 55°

BD is a transversal across parallel sides AD and BC, so ∠EBC = ∠EDA = 35°.

∠BCE = 180° - ∠BEC - ∠EBC = 180° - 90° - 35° = 55°

5 0
3 years ago
Paul borrowed $360 to be repaid in one year. He paid 10% interest and a service
Art [367]

Answer:

Step-by-step explanation:

Hey, do you mean what is the final charge? If so, then look at my next steps

If you mean the final charge then first multiply 10% by 360 , basically 10/100 multiplied by $360 which is equals to $36. Since it is interest, add $36 to $360. The answer will be $396. Then you add on the $19 which would bring the total to $415.

Hehe I am no expert but this is what I did . Tried my best

4 0
3 years ago
Kerrie uses the work shown below to determine 35% of 280.
lys-0071 [83]

For this case we must find 35% of 280.

Kerrie gets 10% and then 25%. So:

10% of 280:

280 ------------> 100%

x -----------------> 10%

Where "x" represents the amount given by 10% of 280.

x = \frac {10 * 280} {100}\\x = 28

Thus, 10% of 280 is 28.

Now, we find 25% of 280:

280 ------------> 100%

x -----------------> 25%

Where "x" represents the amount given by 25% of 280.

x = \frac {25 * 280} {100}\\x = 70

Thus, 25% of 280 is 70.

So we have that 35% of 280 is given by:

28 + 70 = 98

So, Kerrie's solution is correct.

Answer:

Option A

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Answer:

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Step-by-step explanation:

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