3 years ago

Add the two expressions. 8k + 4 and 3k + 8

Mathematics

2 answers:

Nataliya [291]3 years ago

6 0

I believe the answer is 11k+12 it might be wrong..

aniked [119]3 years ago

5 0

Ya i dont know but this is what i think aswell 11k+12

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Solving Rational equations. LCD method. Show work. Image attached.

Dmitry [639]

Answer:

$b=1$

Step-by-step explanation:

The given rational equation is

$\frac{2b-5}{b-2} -2=\frac{3}{b+2}$

The Least Common Denominator is $(b+2)(b-2)$ .

Multiply each term in the equation by the LCD.

$(b+2)(b-2)\times \frac{2b-5}{b-2} -(b+2)(b-2)\times2=(b+2)(b-2)\times\frac{3}{b+2}$

Simplify;

$(b+2)\times \frac{2b-5}{1} -2(b+2)(b-2)=(b-2)\times\frac{3}{1}$

$(b+2)(2b-5) -2(b+2)(b-2)=3(b-2)$

Expand and group similar terms

$2b^2-5b+4b-10 -2(b^2-4)=3b-6$

$2b^2-5b+4b-10 -2b^2+8=3b-6$

$-b-2=3b-6$

$3b+b=-2+6$

$4b=4$

$b=1$

3 0

3 years ago

Willy rents a bike for 7 days. The charge is $15 plus the $0.08 per mile. He wants to spend exactly $35. How many miles can he r

Burka [1]

Answer:

Willy can ride the bike for 250 miles.

Step-by-step explanation:

$35 - $15 = $20

$0.08 × 12.5 = $1

$1 per 12.5 miles

$20 × 12.5 = 250

3 0

3 years ago

Help Please <br><br> Which angle is the vertical angle to ∠DFA?

Wewaii [24]

Answer:

FCD

Step-by-step explanation: and sometimes we do not care about bold writing

FCD is the vertical angle I guess.

okay.

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3 years ago

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PIT_PIT [208]

Answer:

She bought 11 stickers

Step-by-step explanation:

20 - 12.85

7.15

then

7.15/0.65

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3 years ago

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Devaughn's age is three times Sydney's age. The sum of their ages is 80. What is Sydney's age?

Gekata [30.6K]

U times any number by 3 and see witch ones the closest
27x3=81 that's what I think and that's the closest

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3 years ago

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