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3 years ago

To solve the equation 8d = 2d . Lin divides each side by 2d, and Elena subtracts 2d from each

1 answer:

7 0

No. only elena is correct

explanation: in order to solve the equation you first need to subtract 2d from both sides so it’ll look like this

8d-2d = 2d-2d

then you need to combine like terms (the new terms you added are both negative so it cancels out the right side) and it’ll look like this

6d = 0

finally, to find d, divide both sides by 6 because its being multiplied by d
6d/6 = 0/6

zero divided by anything is zero so you are left with:

d = 0

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Paul has 2/3 as many postcards as Shawn. The number of postcards Shawn has is 3/5 of the number of postcards Tim has. If the thr

Otrada [13]

Tim has 84 more postcards than Paul.

Step-by-step explanation:

Given,

Total number of postcards = 280

Let,

Tim's share of postcards = x

Shawn's share of postcards = $\frac{3}{5}\ of\ Tim's\ share$ = $\frac{3}{5}x$

Paul's share of postcards = $\frac{2}{3}\ of\ Shawn's=\frac{2}{3}(\frac{3}{5}x)=\frac{2}{5}x$

According to given statement;

$x+\frac{3}{5}x+\frac{2}{5}x=280$

Taking LCM

$\frac{5x+3x+2x}{5}=280\\\\\frac{10x}{5}=280\\\\2x=280$

Dividing both sides by 2

$\frac{2x}{2}=\frac{280}{2}\\x=140$

Paul's share = $\frac{2}{5}x=\frac{2}{5}(28)=56$

Difference = Tim's share - Paul's share

Difference = 140 - 56 = 84 cards

Tim has 84 more postcards than Paul.

Keywords: addition, fraction

Learn more about fractions at:

#LearnwithBrainly

4 0

3 years ago

3/4+v=1 1/2 what do v equals

NeTakaya

3/4+v=11/2
v=11/2-3/4
v=19/4 or v=4.75

7 0

4 years ago

Find the exact value of each trigonometric function sin 90

Vilka [71]

sin 90 is simply 1, pretty straightforward

8 0

3 years ago

When f(n)=12 what is the value of n

icang [17]

The value of n=12

The question might be wrong but according to your question this is the right answer

4 0

3 years ago

SOMEONE PLEASE HELP ME ASAP PLEASE!!!

viva [34]

Answer:

30°

Step-by-step explanation:

First we take the full amount of degrees from points A to C, which is given as 125° then subtract 94°, which is the given amount from points A to D, this results in 30°

6 0

3 years ago