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son4ous [18]
2 years ago
12

Please help ASAP! Due in a hour! :) answer both and I will thank and mark as brainliest

Mathematics
1 answer:
lorasvet [3.4K]2 years ago
6 0

Answer:

22: 45 and 126

Step-by-step explanation:

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Please help?!?!?!?! Thanks if you do
Fynjy0 [20]
The answer:  F = 1.7 ml

7 0
3 years ago
A job candidate at a large job fair can be classified as unacceptable, provisional, or acceptable. Based on past experience, a h
svp [43]

Answer:

chisquare = 31.667

degree of freedom = 2

Step-by-step explanation:

Formula for chisquare test =  (O-E)²/E

total number observations= 60 + 25 + 15 = 100                  

Estimated E,

80% x 100 = 80

15%x100 = 15

5% x 100 = 5

chisquare =

\frac{(60-80)^{2} }{80} +\frac{(25-15)^{2} }{15}+\frac{(15-5)^{2} }{5}\\

= 5 + 6.67 + 20

= 31.667

from the calculation above the value of the chisquare statistic = 31.67

the degree of freedom is the number of samples in the test  n - 1

= 3-1

= 2

I have solve this question also in a tabular form to aid understanding in the file i uploaded.

thank you and good luck!

4 0
3 years ago
Algebra 2 (picture shown)
TEA [102]

Answer:

<em>M(13)=14.3 gram</em>

Step-by-step explanation:

<u>Exponential Decay Function</u>

The exponential function is used to model natural decaying processes, where the change is proportional to the actual quantity.

An exponential decaying function is expressed as:

C(t)=C_o\cdot(1-r)^t

Where:

C(t) is the actual value of the function at time t

Co is the initial value of C at t=0

r is the decaying rate, expressed in decimal

The element has an initial mass of Mo=970 grams, the decaying rate is r=27.7% = 0.277 per minute.

The equation of the model is:

M(t)=M_o\cdot(1-r)^t

M(t)=970\cdot(1-0.277)^t

Operating:

M(t)=970\cdot 0.723^t

After t=13 minutes the remaining mass is:

M(13)=970\cdot 0.723^{13}

Calculating:

M(13)=14.3 gram

4 0
3 years ago
How do I sketch the graph y=-x?
pashok25 [27]
x    y
-1   1
-2   2 
-3   3
---------------
x     y
1     -1
2     -2
3      -3
6 0
3 years ago
-6(7 + x) plzzzz help
adelina 88 [10]

Answer:

-6x-42

Step-by-step explanation:

Open parenthesis.

-42-6x is what you get once opened.

7 0
3 years ago
Read 2 more answers
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