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miss Akunina [59]
3 years ago
7

Evaluate the expression, 7x+8(x-3). Assume that x=4.

Mathematics
1 answer:
NNADVOKAT [17]3 years ago
8 0

Answer:

if x was 4 then the answer would be 36.

Step-by-step explanation:

28+8(4−3)

=28+(8)(1)

=28+8

=36

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Describe the sampling distribution of Phat. Assume the size of the Population is 25,000. N = 500 P = 0.4 Determine the Mean of t
PIT_PIT [208]

Answer:

0.022

Step-by-step explanation:

Given that :

Population size = 25000

n = 500 ; p = 0.4

Size of random sample (n) = 500

5% of population size : 0.05 * 25000 = 1250

Distribution is normally distributed since n < 5% of population size

Hence, the mean of the distribution = p = 0.4

Standard deviation = √((pq) /n)

q = 1 - p ; q = 1 - 0. 4 = 0.6

Standard deviation = √((0.4 * 0.6) /500)

Standard deviation = 0.0219089

= 0.022

5 0
3 years ago
The perimeter of a piece of paper is 38 inches. Its length is 11 inches.
Rainbow [258]

Answer:

Buddy this might not be the correct answer but I got either 98 or 418 inches. Don't quote me on it though.

Step-by-step explanation:

7 0
3 years ago
Use the discriminant to determine the number and type of solutions for the following equation. 12x2 + 10x + 5 = 0
Paul [167]
Discriminant D is given by:
D=b²-4ac
Implication of discriminant is as follows:

D<0 two zeros that are complex conjugate
D=0 one real zero of multiplicity 2
D>0 two distinct real zers
D= (+ve perfet square)  two distinct rational zeros
From:
12x^2+10x+5=0
plugging in the equation we get:
10²-4×12×5
=100-240
=-140
thus
D<0

Answer is: 
<span>A two irrational solutions </span>
4 0
4 years ago
Read 2 more answers
You have 2 apples and you lose 2 of them. How many do you have left?
Natasha2012 [34]

Answer:

none

Step-by-step explanation:

you lost all of the apples

6 0
3 years ago
Read 2 more answers
ANS ASAP:<br> please need the ans for this question<br> thank you!
nikitadnepr [17]

Answer:

23 squared is 529 and 17 squared is 289 soooo 529 - 289 is 240, and 240 divided by 6 is 40 so ur answer is 40

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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