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Naily [24]
3 years ago
10

Evaluate 4(x - 3) + 5x - x2 for x = 2. O A. 16 O B. 2 O c. -2 O D. 11 SUB

Mathematics
2 answers:
k0ka [10]3 years ago
5 0
The answer is B because if you
Lina20 [59]3 years ago
4 0
I think it is B god bless
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4. As part of a promotion for a new type of cracker, free samples are offered to shoppers in a local supermarket. The probabilit
RUDIKE [14]

Answer:

For this case we need to check the conditions in order to use the normal approximation:

1) np = 60*0.3= 18>10

2) n(1-p) = 60*(1-0.3)= 42>10

Since both conditions are satisfied and the independence condition is assumed we can use the normal approximation given by:

\hat p \sim N (\hat p, \sqrt{\frac{\hat p(1-\hat p)}{n}})

The mean would be given by:

\mu_{\hat p}=0.3

And the deviation is given by:

\sigma_{\hat p}= \sqrt{\frac{0.3*(1-0.3)}{60}}= 0.0592

Step-by-step explanation:

For this case we know the following info:

n =60 represent the sample size

\hat p = 0.3 represent the estimated proportion of people that will buy a packet of crackers after tasting

For this case we need to check the conditions in order to use the normal approximation:

1) np = 60*0.3= 18>10

2) n(1-p) = 60*(1-0.3)= 42>10

Since both conditions are satisfied and the independence condition is assumed we can use the normal approximation given by:

\hat p \sim N (\hat p, \sqrt{\frac{\hat p(1-\hat p)}{n}})

The mean would be given by:

\mu_{\hat p}=0.3

And the deviation is given by:

\sigma_{\hat p}= \sqrt{\frac{0.3*(1-0.3)}{60}}= 0.0592

6 0
3 years ago
Find the domain when f (x) = 5.<br> х<br> -5<br> -1<br> 9<br> 4<br> 5<br> 8<br> f(x) -6<br> -6 | 0
nadezda [96]

Answer:

Pues la función de 5 seria 4 porque si te fijas en la X es (4)

5 0
3 years ago
PLEASE HELP!!!!!!!!!!!!!!
Lelechka [254]

Answer:

Step-by-step explanation:

(8x²-18x+10)/(x²+5)(x-3)

express the expression as a partial fraction:

(8x²-18x+10)/[(x^2+5)(x-3)] =A/x-3 +bx+c/x²+5

both denominator are equal , so require only work with the nominator

(8x²-18x+10)=(x²+5)A+(x-3)(bx+c)

8x²-18x+10= x²A+5A+bx²+cx-3bx-3c

combine like terms:

x²(A+b)+x(-3b+c)+5A-3c

(8x²-18x+10)

looking at the equation

A+b=8

-3b+c=-18

5A-3c=10

solve for A,b and c (system of equation)

A=2 , B=6, and C=0

substitute in the value of A, b and c

(8x²-18x+10)/[(x^2+5)(x-3)] =A/x-3 +(bx+c)/x²+5

(8x²-18x+10)/[(x^2+5)(x-3)] = 2/x-3 + (6x+0)/(x²+5)

(8x²-18x+10)/[(x^2+5)(x-3)] =

<h2>2/(x-3)+6x/x²+5</h2>

(4x+2)/[(x²+4)(x-2)]

(4x+2)/[(x²+4)(x-2)]= A/(x-2) + bx+c/(x²-2)

(4x+2)=a(x²-2)+(bx+c)(x-2)

follow the same step in the previous answer:

the answer is :

<h2>(4x+2)/[(x²+4)(x-2)]= 5/4/(x-2) + (3/2 -5x/4)/(x²+4)</h2>

8 0
3 years ago
What is the area of a cross section that is parallel to face ABCD ?
Hunter-Best [27]
To solve this problem you must apply the proccedure shown below:
 1. The problem asks for the area of a cross section that is parallel <span>to face ABCD. As is parallel to that face, you have can calculate its area as following:
 A=12 cm x 6 cm
 2. Therefore, the result is:
 A=72 cm</span>²
 The answer is: T<span>he area of a cross section that is parallel to face ABCD is 72 cm</span>².
3 0
3 years ago
Which pair of expressions is equivalent to each other?
Nikolay [14]

Answer:

C

Step-by-step explanation:

4 X 4 X 4 X 4 X 4 and 4⁵

we can write 4 X 4 X 4 X 4 X 4  like 4⁵

4 X 4 X 4 X 4 X 4 = 4⁵

6 0
3 years ago
Read 2 more answers
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