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horrorfan [7]
2 years ago
6

Simplify: 9(1 - r) + 3r

Mathematics
2 answers:
Butoxors [25]2 years ago
4 0

Answer:

hdudhryhrgrhdidbf7hs6he8hs6jw9wg5gssi

MA_775_DIABLO [31]2 years ago
4 0

Step-by-step explanation:

9 - 9r + 3r

9 - 6r

For finding the value of r

9 = - 6r

9/ - 6 = r

3 / - 2 = r

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Jakob rolls an 8-sided die that is numbered from 1 through 8 a total of 400 times. About how many times should Jakob expect to r
sergij07 [2.7K]
P(5 on one throw) = 1/8 
expected number of 5's in 400 throws = 1/8 * 400 = 50
3 0
2 years ago
Read 2 more answers
A random sample of 11 university students produced the following data, where x is the minutes spent studying per day, and y is t
SIZIF [17.4K]

Answer:

16.373,16.4

Step-by-step explanation:

Given that a  random sample of 11 university students produced the following data, where x is the minutes spent studying per day, and y is the first exam score (out of a maximum of 100 points).

x y

11 39

13 55

14 43

17 46

19 69

22 75

24 77

25 78

28 77

31 93

34 92 Observations 11        

       

ANOVA        

df SS MS F Significance F    

Regression 1 3214.095153 3214.095153 69.46052448 1.59367E-05    

Residual 9 416.4503017 46.27225574      

Total 10 3630.545455      

       

Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0%

Intercept 16.37281677 6.48384963 2.525169105 0.0324919 1.705329914 31.04030362 1.705329914 31.04030362

x 2.369323595 0.28428592 8.33429808 1.59367E-05 1.726224167 3.012423023 1.726224167 3.012423023

We get regression line as y =2.369x+16.373

a) value of intercept = 16.373

b) 16.4

8 0
2 years ago
Please help im timed <br> how would you solve 17=w/4?
max2010maxim [7]

Answer:

Solution for 17=w-4 equation:

17=w-4

We simplify the equation to the form, which is simple to understand

17=w-4

We move all terms containing w to the left and all other terms to the right.

-1w=-4-17

We simplify the left and right sides of the equation.

-1w=-21

We divide both sides of the equation by -01 to get w.

w=21

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Given point (-6, -2) and a slope of 5, write an equation in slope-intercept form.
kodGreya [7K]

Answer:

y = 5x + 28

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here m = 5 , thus

y = 5x + c ← is the partial equation

To find c substitute (- 6, - 2) into the partial equation

- 2 = - 30 + c ⇒ c = - 2 + 30 = 28

y = 5x + 28 ← equation of line

4 0
2 years ago
D is the midpoint of CE. E has coordinates (−9, −6), and D has coordinates (7, 2). Find the coordinates of C
Sav [38]
This problem is really easy. You set up the first coordinate and then the midpoint on the bottom

(-9 , -6)
(7 , 2)

Now there are 16 steps from -9 to 7, then you add 16 more to 7 and you get 23 for the x axis.

There are 8 steps from -6 to 2, now count 8 more steps, and you get 10 for the y axis.

The coordinates of C are (23 , 10)
Hope it helped!
3 0
3 years ago
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