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kap26 [50]
3 years ago
10

294 to the nearest 1000

Mathematics
1 answer:
spin [16.1K]3 years ago
5 0
The answer is 0 since when you round it to thousandth you make it 0 but if more than 500 shove it into place.


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Composite functions question : what's the value?
tester [92]

(f\circ f)(x)=f(f(x))\\\\ (f\circ f)(x)=x^2\Longleftrightarrow f(f(x))=x^2\\\\ f(f(f(f(f(f(2))))))=f(f(f(f(4))))=f(f(16))=256

7 0
3 years ago
Solve the system by substitution.<br> [-2.5x+y = 13.5<br> 12.25x - y=-12.25
IrinaK [193]

Answer:

x = 5/39 , y = 539/39

Step-by-step explanation:

Solve the following system:

{y - 2.5 x = 13.5

12.25 x - y = -12.25

In the first equation, look to solve for y:

{y - 2.5 x = 13.5

12.25 x - y = -12.25

y - 2.5 x = y - (5 x)/2 and 13.5 = 27/2:

y - (5 x)/2 = 27/2

Add (5 x)/2 to both sides:

{y = 1/2 (5 x + 27)

12.25 x - y = -12.25

Substitute y = 1/2 (5 x + 27) into the second equation:

{y = 1/2 (5 x + 27)

1/2 (-5 x - 27) + 12.25 x = -12.25

(-5 x - 27)/2 + 12.25 x = 12.25 x + (-(5 x)/2 - 27/2) = 9.75 x - 27/2:

{y = 1/2 (5 x + 27)

9.75 x - 27/2 = -12.25

In the second equation, look to solve for x:

{y = 1/2 (5 x + 27)

9.75 x - 27/2 = -12.25

9.75 x - 27/2 = (39 x)/4 - 27/2 and -12.25 = -49/4:

(39 x)/4 - 27/2 = -49/4

Add 27/2 to both sides:

{y = 1/2 (5 x + 27)

(39 x)/4 = 5/4

Multiply both sides by 4/39:

{y = 1/2 (5 x + 27)

x = 5/39

Substitute x = 5/39 into the first equation:

{y = 539/39

x = 5/39

Collect results in alphabetical order:

Answer: {x = 5/39 , y = 539/39

5 0
3 years ago
The following data was collected to explore how the average number of hours a student studies per night and the student's GPA af
Mekhanik [1.2K]

Answer:

Pvalue = 0.1505

y = 0.550x1 + 3.600x2 + 7.300

Step-by-step explanation:

Given the data :

Study Hours GPA ACT Score

5 4 27

5 2 18

5 3 18

1 3 20

2 4 21

Using technology, the Pvalue obtained using the Fratio :

F = MSregression / MSresidual = 30.228571/ 8.190476 = 3.69

The Pvalue for the regression equation is:

Using the Pvalue from Fratio calculator :

F(1, 3), 3.69 = 0.1505

Using the Pvalue approach :

At α = 0.01

Pvalue > α ; Hence, we fail to reject H0 and conclude that ; There is not enough evidence to show that the relationship is statistically significant.

The regression equation :

y = A1x1 + A2x2 +... AnXn

y = 0.550x1 + 3.600x2 + 7.300

x1 and x2 are the predictor variables ;

y = predicted variable

8 0
3 years ago
A company’s profit is equal to revenue minus cost. For one company, the yearly revenue is $32 million. What function rule descri
Naily [24]

Answer:

p=32-c (*Units in million $)

Step-by-step explanation:

Let r be the revenue realized in any given year.

-Given that c=cost and p= revenue

#We notice that the profit, cost or revenue realized in one year is independent of the prior or subsequent year.

-Therefore, the revenue function is independent of time and is expressed as:

p=r-c\\\\r=32\\\\\therefore p=32-c

Hence, the yearly profit for any given year is expressed as p=32-c (*Units in million $).

6 0
3 years ago
What is the total surface area of the pyramid?
kykrilka [37]

Answer:

16.64911

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
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