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finlep [7]
3 years ago
6

The question is Stephen read for 34 minutes on Monday and 45 minutes on Tuesday. Use breaking apart to find how many minutes Ste

phen read all togather. I am not sure what breaking apart means
Mathematics
1 answer:
user100 [1]3 years ago
7 0
Breaking apart means that you just take the tens from each number, and the ones from each number, then add them up.


The tens from your numbers are:
30 from 34
40 from 45

The ones from your numbers are:
4 from 34
5 from 45

Now, you have to add up the tens and ones separately.
30 + 40 = 70
4 + 5 = 9

Finally, you add up those 2 numbers that you got- 70 and 9

The answer: Stephen read for 79 minutes total.
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I need it step by step​
elena-s [515]

Answer:

Step-by-step explanation:

we want y by itself...sooo

y - 19 = - \frac{6}{10}(x - (-5))

y - 19 = - \frac{6}{10}(x+5)

y - 19 =  - \frac{6}{10}x - \frac{6}{2}

y = - \frac{6}{10}x - 3 +19

y = - \frac{6}{10}x + 16

4 0
2 years ago
Samantha glued stickers on a sheet with an area of 1,260 square centimeters in 1/6 of an hour. What is the speed, in square cent
ASHA 777 [7]
1/6 of an hour is 10 minutes. For a precise answer, convert it to seconds. You will end up with 600 seconds. Divide the area of the sheet by 600 seconds.
1260/600 ~ 2 
With this result, Samantha glued approximately 2 stickers every second.
4 0
3 years ago
Read 2 more answers
Help with number 6. <br> A through F
Elodia [21]
A) always

Example
-3+(-3)= -9

B) never

C) never
D) always
E)never
F)sometimes



3 0
2 years ago
Do bonds reduce the overall risk of an investment portfolio? Let x be a random variable representing annual percent return for V
ryzh [129]

Answer:

a.

∑x=109, ∑x²=4173, ∑y=87, ∑y²=2083.

b.

sample mean for x=10.9.

variance for x=331.66.

standard  deviation for x=18.21.

sample mean for y=8.7.

variance for y=147.34.

standard  deviation for y=12.14.

c.

75% Chebyshev interval around the mean for x values

-25.52,47.32

75% Chebyshev interval around the mean for y values

-15.58,32.98

The interval shows that Vanguard Balanced index has smaller spread.

d.

coefficient of variation for x=167.06%

coefficient of variation for y=139.54%

Smaller CV means lower risk so, smaller CV is better.

Step-by-step explanation:

Note: ALL ANSWERS ARE ROUNDED TO TWO DECIMAL PLACES

a.

∑x=17+0+17+28+28+27+29−12−12−13=109,

∑x²=17²+0²+17²+28²+28²+27²+29²+(−12)²+(−12)²+(−13)²=4173,

∑y=14−2+27+18+20+11+14−2−3−10=87,

∑y²=14²+(−2)²+(27)²+(18)²+(20)²+(11)²+(14)²(−2)²+(−3)²+(−10)²=2083.

b.

sample mean for x=∑x/n=109/10=10.9.

variance x=\frac{sum(x-mean )^2}{n-1}

x-mean

6.10

-10.90

6.10

17.10

17.10

16.10

18.10

-22.90

-22.90

-23.90

sum(x-mean)²=6.10 ²+(-10.90 )²+6.10 ²+17.10² +17.10²+ 16.10² +18.10² +(-22.90 )²+(-22.90 )²+(-23.90 )²=2984.9

variance  x=\frac{2984.9}{9}

Variance for x=331.66.

standard  deviation for x=√variance for x

standard  deviation for x=√331.66

standard  deviation for x=18.21.

sample mean for y=∑y/n=87/10=8.7.

variance y=\frac{sum(y-mean )^2}{n-1}

y-mean

5.30

-10.70

18.30

9.30

11.30

2.30

5.30

-10.70

-11.70

-18.70

sum(y-mean)²=5.30 ²+(-10.70 )²+18.30² +9.30² +11.30² +2.30² +5.30² +(-10.70 )²+(-11.70 )²+(-18.70 )²=1326.1

variance  y=\frac{1326.1}{9}

variance for y=147.34.

standard  deviation for y=√variance for y

standard  deviation for y=√147.34

standard  deviation for y=12.14.

c.

75% Chebyshev Interval

mean±k standard deviation

We have to find value of k.

1-\frac{1}{k^{2} } =0.75

1-0.75 =\frac{1}{k^{2} }

\frac{1}{k^{2} }=0.25

k²=4

k=2

so, 75% Chebyshev Interval for x

10.9±2*(18.21)

[-25.52,47.32]

75% Chebyshev Interval for y

8.7±2*(12.14)

[-15.58,32.98]

The interval shows that Vanguard Balanced index has smaller spread.

d.

CV for x=\frac{S.Dx}{meanx} *100

CV for x=\frac{18.21}{10.9} *100

CV for x=167.06%

CV for y

CV for y=\frac{S.Dy}{meany} *100

CV for y=\frac{12.14}{8.7} *100

Cv for y=139.54%

The smaller CV shows the smaller amount of risk so, smaller CV is better.

4 0
3 years ago
-29 + 5× = -2× + 27 is equal to
Alborosie
First, add 2x on both sides. then add 29 on both sides. you want to remove the negatives when you're doing this. now you have 7x equals 56. now you divide 7 on both sides. you want to do this because your isolating the variable. now to get x equals 8.
5 0
3 years ago
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