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irinina [24]
3 years ago
11

Combine like terms to create an equivalent expression. 3.4-2.8d+2.8d-1.3

Mathematics
1 answer:
jekas [21]3 years ago
3 0

Answer:

2.1

Step-by-step explanation:

when you combine like terms you have to combine the d's with the d's and the nonvariable number with the nonvariable number.

this is how it should look like

(-2.8d+2.8d)+(3.4+(-1.3))

a negitive plus a posative cancel out so the d's disapier and now you only have 3.4+-1.3. this is just like subtracting so you can put it like this

3.4-1.3 and you will get 2.1

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A new car is purchased for 17900 dollars. The value of the car depreciates at 12.25%
kiruha [24]

Answer:

Therefore the value of the car after 10 year will be = $4,845.34

Step-by-step explanation:

A new car is purchased for $17900. the value of the car depreciates at 12.25% per year.

Since the value of the car depreciates therefore the amount of the car is

A= P(1-\frac{r}{100})^n}

    =17900(1-\frac{12.25}{100})^{10}                [  p = $17900, r = 12.25% and n =10 years]

    = $ 4,845.34

Therefore the value of the car after 10 year will be = $4,845.34

3 0
3 years ago
For which value of x is the equation 3(x+2)+x=2x+16 true?
Arturiano [62]

Answer:

1) take the first part of the equation and work it by multiplying (x+2) by 3

3(x+2)+x

3x +6+x

2)put the answer you got into the question you were given

3x + 6+x =2x +16

3)group the x variables and the non x variables

3x +x -2x =16 -6

4) Now work the equation you have

3x+x-2x=16-6

4x-2x=16-6

2x=16-6

2x=10

5) you divide both sides by the x variable

2x=10

2x/2 =10/2

x=5

therefore x is 5

3 0
3 years ago
Help again!!!!!!!!!!!!!!!
balandron [24]

Answer:

4.5:7.25

Step-by-step explanation:

she ran 7.25 miles so ig that would be it but im not 100% sure

7 0
3 years ago
Which expression is equivalent to 1/4 -3/4 x?
Dmitriy789 [7]

Answer:

factor out 1/4 from the expression

1/4x(1-3x)

5 0
3 years ago
Read 2 more answers
Factoring quadratics 4x^2-13x+3=0
ozzi

Answer:

X=3,1/4

Step-by-step explanation:

4x²-(12+1)x+3=0

or,4x²-12x-x+3=0

or,4x(x-3)-1(x-3)=0

or,(4x-1)(x-3)=0

Either,4x-1=0➡️ 4x=1

X=1/4

OR,x-3=0➡️ X=3

6 0
2 years ago
Read 2 more answers
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