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3 years ago

How do I do this trying my best but I can’t please help T_T

Mathematics

1 answer:

Sever21 [200]3 years ago

4 0

Use algebra.

Let the number of stickers each had in the beginning = x stickers.

Ray lost 10 we represent this by

x - 10 ( = no. stickers he has now)

Tom bought 200 so the number of stickers he now has

= x + 200

Rays has 1/4 as much as Tom so we can now create the equation

1/4(x + 200) = x - 10

Soling for x:-

1/4 x + 50 = x - 10

60 = 3/4 x

x = 60 * 4/3 = 80

Answer they had 80 stickers at first.

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Translate into an algebraic expressions: b is decreased by 40% and decreased again by 40% . What is the result ?

Vikki [24]

Answer:

b-4/5b

Step-by-step explanation:

b is decreased by 80%

dat is 80/100×b

= b-80/100b

b-4/5b

5 0

3 years ago

How many times can 95 go into 96

Tanzania [10]

Answer:24 times

Step-by-step explanation:Hi there!

First of all, division is the opposite of multiplication. So if I

divide 72 by 3 I should get 24, since 3*24 = 72.

(You might notice that our division looks sort of like the

multiplication:

X 3

___

----

just in a different order.)

OK, back to long division.

The process of long division goes sort of like this:

1. Write the problem

2. Make a guess of what the answer will be

3. Check your guess, fix it if you need to

4. "Bring down"

5. Repeat steps 2-4 until you're out of digits

So for 72 divided by three, the process would go like this:

1. Write the problem

----

3|72

That means 72 divided by 3, also called 3 into 72, etc.

2. Make a guess of what the answer is.

Let's cover up the 2 in 72 for a minute: (This lets us ignore the place

value, etc.)

----

3|7?

Now let's ask: How many times does 3 go into 7?

You can make whatever guess you want. But since we have a good idea of

what the answer should be, let's guess 2.

Now we write the 2 above the 7 like this:

----

3|7?

Now, to check that we're right, we need to subtract 2 3's from 7.

We do this by multiplying 2X3 (to get 6) and then writing:

----

3| 7?

-6

We need the 2 from 72 again, so let's write it in again. In fact, we're

going to "bring it down" next to the 1 to make 12. Then we'll guess how

many times 3 goes into 12, and so on.

Anyway:

----

3| 72

-6 | <---that's supposed to be an arrow reminding you that we're

__\ / bringing down the 2 to make 12

Ok. So, how many times does 3 go into 12? Let's guess 4 (sorry, I'm

cheating since I know the answer already!)

----

3| 72

-6

Now let's multiply 3 X 4. Wow! We get 12. If we subtract 12-12

----

3| 72

-6

- 12

---

Now, we can check to make sure that 3 X 24 really does equal 72, and

we're done.

4 0

3 years ago

What inequalities are shown by this graph?

kramer

Answer:

the answer is going to be

x>27

8 0

3 years ago

Read 2 more answers

MATH IS HARD. HELP<br> Change the following into a single fraction: 1− (a+b/a−b)

lianna [129]

Answer:

-2b/(a-b)

Step-by-step explanation:

1− (a+b/a−b)

We need to get a common denominator of a-b

1 = (a-b)/(a-b)

Replace 1 with (a-b)/(a-b)

(a-b)/(a-b) - (a+b)/(a-b)

Put over the common denominator

(a-b) - (a+b)

-----------------

(a-b)

Distribute the minus sign.

(a-b) - a-b)

-----------------

(a-b)

a-a-b-b

---------------

a-b

-2b

----------

a-b

6 0

3 years ago

The measures of ∠1, ∠2, and ∠3 are 40%, 12.5%, and 25% of the sum of the angle measures of the quadrilateral. Find the value of

sweet [91]

The value of x is 81

Step-by-step explanation:

The sum of the interior angles of any quadrilateral is 360°

The measure of ∠1 is 40% of the sum of the angle measures of the quadrilateral
The measure of ∠2 is 12.5% of the sum of the angle measures of the quadrilateral
The measure of ∠3 is 25% of the sum of the angle measures of the quadrilateral
We need to find the value of x

∵ The figure have 4 sides

∴ The figure is a quadrilateral

∵ The sum of the measures of the interior angles of a

quadrilateral is 360°

- Add the four angles and equate the sum by 360

∴ m∠1 + m∠2 + m∠3 + x = 360

∵ m∠1 = 40% of the sum of the angle measures of the quadrilateral

∴ m∠1 = 40% × 360 = $\frac{40}{100}$ × 360 = 144°

∵ m∠2 = 12.5% of the sum of the angle measures of the quadrilateral

∴ m∠2 = 12.5% × 360 = $\frac{12.5}{100}$ × 360 = 45°

∵ m∠3 = 25% of the sum of the angle measures of the quadrilateral

∴ m∠3 = 25% × 360 = $\frac{25}{100}$ × 360 = 90°

- Substitute these values in the equation above

∴ 144 + 45 + 90 + x = 360

- Add the like terms in the left hand side

∴ 279 + x = 360

- Subtract 279 from both sides

∴ x = 81°

The value of x is 81

Learn more:

You can learn more about the polygons in brainly.com/question/6281564

#LearnwithBrainly

5 0

3 years ago