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stellarik [79]
3 years ago
11

Is (8, 4) a solution to this system of equations? 20x + y = 10 8x + 16y = 19 Yes or no

Mathematics
1 answer:
Shtirlitz [24]3 years ago
4 0

Answer:

hell yes

Step-by-step explanation:

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A poultry farmer wishes to estimate the average incubation period (the number of days between a hen laying her egg and the time
sergiy2304 [10]

Answer:

49 eggs.

Step-by-step explanation:

The formula for Margin of Error =

z × standard deviation/√number of samples

z = z score of 98% confidence interval = 2.326

Margin of Error = Half a day = 1/2day = 0.5 day

Standard deviation = 1.5 days

Number of samples = number of eggs he needs to sample = unknown.

Imputing these above values into the formula

Margin of Error = z × standard deviation/√number of samples

0.5 = 2.326 × 1.5/√n

Cross Multiply

0.5 × √n = 2.326 × 1.5

√n = 2.326 × 1.5/0.5

√n = 3.489/0.5

√n = 6.978

Square both sides

(√n)² = 6.978²

n = 48.692484

n ≈ Approximately to the nearest whole number = 49

Therefore, the number of eggs he needs to sample to create the desired interval is approximately to the nearest whole number 49 eggs

8 0
3 years ago
Need answers for 1-9.
FinnZ [79.3K]
The answer is negative 8. Hope this Helps.
4 0
3 years ago
HELP ME ASAP 29 POINTS
Naya [18.7K]
The range means the y values. The points are written as: (x,y)

So, the right answer is {1,2,3} not the C because the range only needs to be told once.

Hope this helped and pls mark as brainliest!

~ Luna
6 0
3 years ago
I need help ASAP!!!!
makvit [3.9K]

Answer:

Step-by-step explanation:

what grade are you in so i can help

4 0
3 years ago
-7x^2+14x+21=0<br>answer?​
scoray [572]

Answer:

7(−x−1)(x−3)

Step-by-step explanation:

6 0
3 years ago
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