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3 years ago

3x+4=5メー10 How to slove

Mathematics

2 answers:

ser-zykov [4K]3 years ago

5 0

Answer:

Step-by-step explanation:

3x+4=5x-10

First, you have to combine your variables. By doing this you subtract 3x from both sides of the equation.

3x+4=5x-10

-3x -3x

4=2x-10

Next, you have to combine your whole numbers. In order to do so, you can subtract 2x and 4 from both sides so it would look like this:

4=2x-10

-2x -2x

-2x+4=10

-4 -4-

2x=-4-10

After that, you simplify -4-10, which is -14. Your equation should look like this:

-2x=-14

Finally, you need to isolate x. In order to do that, you need to divide -2 from both sides since you are multiplying -2 and x with the expression -2x.

-2x=-14

-2 -2

Your final answer is: x=7

Rudik [331]3 years ago

4 0

Yu have to multiply 3 with the 5 with that answer

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Marcus has been running a beverage cart on weekends at the beach, selling water and soda. Last Saturday, he sold 40 bottles of w

Vedmedyk [2.9K]

Answer:

$2 for soda and $1.5 for a bottle of water

Step-by-step explanation:

You start by turning both situations into an equation

Let x represent bottles of water and y represent sodas

Saturday:

$40x+25y=110$

Sunday:

$50x+45y=165$

You then want to start by cancelling out the x in this equation, to do that you want 40x to become -50x so you:

50÷40=1.25

You then times the whole equation by -1.25

40x+25y=110

×-1.25

-50x+-31.25y= -137.5

You then add this equation by Sunday's equation

50x+45y=165

-50x+-31.25y=-137.5

13.75y=27.5

You now want to make the co-efficient of y a whole number (for example 15) so you divide 15/13.75=1.09 recurring

13.75y=27.5

×1.09 recurring

15y=30

15y/15=30/15

y=2

Now that we know y = 2

We can use either Saturday or Sunday's equation to figure out the value of $x$

Let's use Sunday's:

50x+45×2=165

50x+90=165

50x+90-90=165-90

50x/50=75/50

x=1.5

Let's check our answer with Saturday's equation

40×1.5+25×2=110

This equation is correct

Therefore the prices for each beverage option is $1.5 for a bottle of water and $2 for a soda

4 0

3 years ago

Team B played three games and had an average of 13 hits in each game with 100 official at-bats. Three of the hits were home runs

Sophie [7]

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Pls mark brainliest!:)

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2 years ago

I really need your help, but I don't get any.

STatiana [176]

Answer:

Step-by-step explanation:

x < -12, so x+12 < 0

| x-(-12) | = | x+12 | = -x-12

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3 years ago

MATH HELP PLS!!! MARKING BRAINLIESTT!!!!!!!!!!!!!!!!!

kow [346]

The function would be y = 0.45x, x being the number of seconds, y being the items he can ring up.

For example (this is an example only to show how this equation works), if we were looking at how many items the cashier can ring in 5 seconds, we would make the equation y = 0.45(5), and with multiplication, we can find that they would ring 2.25 items ( y = 2.25 )

If I misunderstood this question or got something wrong, please leave a comment and I can help further.

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3 years ago

The combined weight of the people in an elevator is 49% of the 3,025-pound capacity.Which would be the best way to estimate the

klasskru [66]

Answer:

50% of 3000

Step-by-step explanation:

49% is very close to 50% (half). 3,025 pounds is very close to 3,000 pounds.

Half of 3,000 pounds is 1,500 pounds.

3 0

3 years ago