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4 years ago

PLEASE SOME ONE HELP ME IM DYING!!!!!

Mathematics

1 answer:

Afina-wow [57]4 years ago

4 0

We know the area of the middle rectangle is 48 (length * width). removing that rectangle leaves us with two semicircles. you can combine those semicircles to be the equivalent of one circle. the area for a circle is r^2 * pi. we know the diameter is 4 because that is where we cut the semicircles. radius is half the diameter, so r is 2. 2^2 is 4, 4* pi is 12.56. add 12.56 (area of semicircles) with 48 (area of rectangle) and we get 60.56

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The table shows the number of stickers on different kinds of packs. Barry bought 4 packs of snowflakes and 2 packs of dinosaurs.

Darya [45]

So, Barry bought 4 packs of snowflakes and each pack contains 20 stickers. Therefore, we do 4 x 20, which is 80, so he has 80 snowflake stickers. Then, he also bought 2 packs of dinosaurs, and each pack of dinosaur stickers has 17 stickers. So, we need to do 2 x 17 which is 34, so he has 34 dinosaurs stickers. In total, Barry has 114 stickers, now we need to remember how many stickers in total he has for later. Let's move on to Amy. Amy bought 3 packs of snowflakes, and because each pack contains 20 stickers, we do 3 x 20 which equals 60. Therefore, Amy has 60 snowflake stickers. Then, Amy bought 3 packs of rose stickers, so because each pack of rose stickers has 25 stickers, we do 3 x 25 which is 75. So, Amy has 135 stickers in total. Now let's add up both of their totals to see if we have 300 stickers. So, if we add 135 and 114 we get 249, we do not have enough stickers. Let's find out how many stickers they still need to buy. Now, we do 300 (Because 300 is the amount we need to have) minus 249 (Because that is the amount we have) which equals 51. So, they need to buy 51 more stickers because that is what they are missing from the total they need. Therefore, the answer is A. 51.

6 0

4 years ago

○ + ○ + ○= 30 ○ + ¤¤ + ¤¤= 18 ¤¤ - ☆☆= 2 ☆ + ○ × ¤= ? What is the ?

Shtirlitz [24]

○ + ○ + ○= 30

○ + ¤¤ + ¤¤= 18

¤¤ - ☆☆= 2

☆ + ○ × ¤= ?

○ =10

¤¤ = 4 so ¤ =2

☆☆= 2 so ☆ = 1

○ + ○ + ○ = 10 + 10 + 10 = 30 ...correct

○ + ¤¤ + ¤¤ = 10 + 4 + 4 = 18 ...correct

¤¤ - ☆☆ = 4 - 2 = 2 ...correct

☆ + ○ × ¤= 1 + 10 x 2 = 21

5 0

3 years ago

Read 2 more answers

Toby has already spent 22 minutes on the phone, and he expects to spend 2 more minutes with every phone call he routes. In all,

Scilla [17]

10.
42-22 is 20
20 minutes divided by 2 minutes is 10

4 0

3 years ago

Question 1 of 40 If f(x) = 4x² - 6 and g(x) = x² - 4x-8, find (f- g)(x).

Aleksandr-060686 [28]

Answer:

$\huge\boxed{\sf (f-g)(x) = 3x\² + 4x - 14}$

Step-by-step explanation:

<h3>Given functions:</h3>

f(x) = 4x² - 6
g(x) = x² - 4x - 8

<h3>Solution:</h3>

Subtract both functions

(f-g)(x) = 4x² - 6 - (x² - 4x - 8)

(f-g)(x) = 4x² - 6 - x² + 4x - 8

Combine like terms

(f-g)(x) = 4x² - x² + 4x - 6 - 8

(f-g)(x) = 3x² + 4x - 14

$\rule[225]{225}{2}$

3 0

2 years ago

Read 2 more answers

3 letters without replacement 4 letters A B C D how many ways can this be done if the order of the choices matters

Veseljchak [2.6K]

Answer:

Since the order of choice matters, we will permute the values. a bit more explanation for this:

If the order of choice did NOT matter, ABC and BCA will be counted as one since order of choice does NOT matter

Since order of choice does matter, ABC , BCA and CAB are all different possibilities for the arrangement of the same 3 letters

Since we have 3 slots:

___ ___ ___

Now, for the first slot. You can out either one if the 4 alphabets in the first slot since no slot has been used as of now

So:

_4_ ___ ___

**Keep in mind that the 4 is the possible number of values this slot can have**

Now that one slot has been used, one of the 4 alphabets has been used and since we are not allowed to repeat the same alphabets, we are left with 3 more alphabets

we can put any one of the 3 alphabets in this second slot, Hence:

_4_ _3_ ___

Now that 2 of the 4 alphabets have been used, we are left with only 2 alphabets, so there are only 2 possible alphabets for slot 3

Therefore:

_4_ _3_ _2_

Now that we know the possible alphabets for all 3 slots, we will multiply them with each other to get the total possible number of 3 - alphabet words we can make with 4 alphabets

Total possible words = 4 * 3 * 2

Total possible words = 24

We could've used the formula for Permutation as well

8 0

3 years ago