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umka21 [38]
3 years ago
14

Dang this is hard quiz

Mathematics
1 answer:
olga nikolaevna [1]3 years ago
8 0

Answer:

-54

Step-by-step explanation:

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Answer:

Step-by-step explanation:

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3 years ago
The table below shows the surface area y, in square feet, of a shrinking lake in x days:
andreyandreev [35.5K]
Based on the data, the most likely correlation coefficient would be -1.
The slope between 20 and 30 days is -1, and it represents the change in the surface area of the lake per day.
The data represents correlation, not causation.

Since the data would form a perfectly straight line through the points, the correlation coefficient would be -1 for a perfect decreasing fit.
To find the slope, find the change in the surface area between those days, the change in the days, and write it as surface area/days:  80-90=-10; 30-20=10; -10/10=-1
This is not causation because there could be lurking variables we cannot see.
6 0
3 years ago
Plzzzzzzz help it's due today
SSSSS [86.1K]

Answer:

dan - 42:7 / 6:1

mia - 48:6 / 8:1

Step-by-step explanation:

mia has the greater sleep to days ratio because she sleeps 8 hours a day, whereas, dan sleep 6 hours a day. as you can see, the ratios can be ordered from greatest to least making mia have the greater ratio.

hope this helps :3

5 0
3 years ago
Read 2 more answers
PLS HELP ME ASAL FOR 7, 8, and 9. A and B! (SHOW WORK!!!!) + LOTS IF POINTS!! (BE SPECIFIC ON WHICH your ANSWERING)
nevsk [136]
Ok so
Q.1=B
Q.2=B
Q.3(a)=(d-45)+m+65
      (b)=d+m+20  
5 0
3 years ago
URGENT! PLEASE HELP.
uysha [10]

Answer: a) BC = 1386.8 ft

b) CD = 565.8 ft

Step-by-step explanation:

Looking at the triangle,

AD = BD + 7600

BD = AD - 7600

Considering triangle BCD, we would apply the the tangent trigonometric ratio.

Tan θ = opposite side/adjacent side. Therefore,

Tan 24 = CD/BD = CD/(AD - 700)

0.445 = CD/(AD - 700)

CD = 0.445(AD - 700)

CD = 0.445AD - 311.5 - - - - - - - -1

Considering triangle ADC,

Tan 16 = CD/AD

CD = ADtan16 = 0.287AD

Substituting CD = 0.287AD into equation 1, it becomes

CD = 0.445AD - 311.5

0.287AD = 0.445AD - 311.5

0.445AD - 0.287AD = 311.5

0.158AD = 311.5

AD = 311.5/0.158

AD = 1971.52

CD = 0.287AD = 0.287 × 1971.52

CD = 565.8 ft

To determine BC, we would apply the Sine trigonometric ratio which is expressed as

Sin θ = opposite side/hypotenuse

Sin 24 = CD/BC

BC = CD/Sin24 = 565.8/0.408

BC = 1386.8 ft

4 0
4 years ago
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