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Anon25 [30]
2 years ago
14

-4 + 4d + 17 = 33 D = ?

Mathematics
1 answer:
cricket20 [7]2 years ago
7 0

Answer:

3?

Step-by-step explanation:

I think it is 3, because...

33 - 17 = 16

16 - 4 = 12

12/4 = 3

???

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-2- 3(7-k) =-4(2k-1)
Ivan

Answer:

k=27/11

Step-by-step explanation:

7 0
2 years ago
G (x)=x-3 and h(x)= square root of x, find(g o h) (25)
nevsk [136]
H(25)  = sqrt25 = 5

g(5) = 5 - 3 = 2

answer is 2
7 0
2 years ago
​Recently, a random sample of 13-18 year olds was​ asked, "How much do you currently have in​ savings?" The data in the table re
Sonbull [250]

Answer:

μ = 235.38

σ = 234.54

Step-by-step explanation:

Assuming the table is as follows:

\left[\begin{array}{cc}Savings&Frequency\\\$0-\$199&339\\\$200-\$399&86\\\$400-\$599&55\\\$600-\$799&18\\\$800-\$999&11\\\$1000-\$1199&8\\\$1200-\$1399&3\end{array}\right]

This is an example of grouped data, where a range of values is given rather than a single data point.  First, find the total frequency.

n = 339 + 86 + 55 + 18 + 11 + 8 + 3

n = 520

The mean is the expected value using the midpoints of each range.

μ = (339×100 + 86×300 + 55×500 + 18×700 + 11×900 + 8×1100 + 3×1300) / 520

μ = 122400 / 520

μ = 235.38

The variance is:

σ² = [(339×100² + 86×300² + 55×500² + 18×700² + 11×900² + 8×1100² + 3×1300²) − (520×235.38²)] / (520 − 1)

σ² = 55009.7

The standard deviation is:

σ = 234.54

6 0
3 years ago
A jet plane traveling at a constant speed goes 1200 mi with the​ wind, then turns around and travels for 1000 mi against the win
givi [52]

Answer:

Avg speed 550 miles per hour

Step-by-step explanation:

with the wind 1200 miles traveling

1200/(550+50) = 2 hours

Against the wind

1000/(550-50) = 2 hours

4 0
3 years ago
HELP
KiRa [710]
M=2,000÷((1−(1+0.072÷12)^(−12
×2))÷(0.072÷12))
M=89.73
8 0
3 years ago
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