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amid [387]
2 years ago
12

1. 4x-8+2x+-5x+x²-3= 2.3x+5x= 3.2r+4+3x-2= 4.3x-2y-x+5y= 5.2y²-8y³+5y-5y²+4y³=

Mathematics
1 answer:
Marrrta [24]2 years ago
3 0
1. 4x - 8 + 2x + (-5x) + x^2 - 3 = 4x - 8 + 2x - 5x + x^2 - 3...now, we just combine like terms....lets group them...it will be easier ...x^2 + (4x + 2x - 5x ) - 8 - 3 = x^2 + x - 11

2. 2x + 5x = 8x

3. 2r + 4 + 3x - 2 = 3x + 2r + (4 - 2) = 3x + 2r + 2

4. 3x - 2y - x + 5y = (3x - x) + (5y - 2y) = 2x + 3y

5. 2y^2 - 8y^3 + 5y - 5y^2 + 4y^3 = (4y^3 - 8y^3) + (2y^2 - 5y^2) + 5y =
    -4y^3 - 3y^2 + 5y
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roland Purchasing pottery supplies for pottery class he buys a portable pottery wheel for $382 modeling clay for $12 and a potte
Anon25 [30]
Hello!

First you have to find the total of the items he bought

382 + 12 + 6.14 = 400.14

Then you apply the tax rate

400.14 * 1.0825 = 433.15155

We round this to 433.15

The answer is $433.15

Hope this helps!
7 0
3 years ago
A piece of pie costs .10 and a cup of coffee costs .5. How much will 40 pieces of pie and 20 cups of coffee cost?
dybincka [34]
One pie costs 0.10
you are buying 40 pies so...
40 x 0.10 = $4

one cup of coffee costs 0.50
you are buying 20 coffee so...
20 x 0.50 = $10

$4 + $10 = $14

It costs $14 to buy 40 pieces of pie and 20 cups of coffee
7 0
3 years ago
The following table shows the probability distribution for a discrete random variable.
mezya [45]

Answer: C. 30.47

Step-by-step explanation:

The mean of discrete random variable i.e. the expected value of X is given by :-

E(X)=\sum^{i=n}_{i=1} X_iP(X_i)

Now by using the given table, the expected value of X is given by :-

\\\\\Rightarrow\ E(X)=23\cdot (0.16)+25\cdot(0.09)+26\cdot(0.18)+31\cdot(0.12)+34\cdot(0.24)+38\cdot(0.21)\\\\\Rightarrow\ E(X)=30.47

Hence, the  mean of discrete random variable= 30.47

6 0
3 years ago
Which of the following is a number set that contains the number –5? A. integers B. whole numbers C. natural numbers D. irrationa
meriva
It would be A or B, as an integer can be anything and it’s a while number.
6 0
2 years ago
Find the limit of the function by using direct substitution. Limit as x approaches zero of quantity x squared plus ten. Answer C
Oksi-84 [34.3K]

Answer:

D

Step-by-step explanation:

So we are given the limit:

\lim_{x \to 0} (x^2+10)

To figure out this limit, we can use direct substitution. Simply substitute 0 for x and then simplify. Therefore:

\lim_{x \to 0} (x^2+10)\\=(0)^2+10\\=0+10\\=10

Therefore, the limit equals 10.

8 0
3 years ago
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