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labwork [276]
3 years ago
10

Y=-4x y=x^2-12 solve the system of equations

Mathematics
1 answer:
anygoal [31]3 years ago
7 0

Answer:(-6,24) and (2,c8)

Step-by-step explanation:

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The claim is that the standard deviation of the speeds of drivers in Bradford is 8 mph. An experienced driver feels that this is
Irina-Kira [14]

Answer:

Null hypothesis is rejected. Standard deviation is > 8 miles per hour

Step-by-step explanation:

σ [Population standard deviation] = 8 , s [sample standard deviation] = s

n [no of items] = 8

H0 [Null] : σ = 8 ; H1 [Alternate - Right Tail] : σ > 8

χ2 = (n - 1) . s^2 / σ^2

= 49 x (10.5)^2 / 82 = 5402.25 / 64

χ2 = 84.410

df [degree of freedom] = n -1 = 50 - 1 = 49

P value (χ^2 49 > 84.410) = 0.00125

p = 0.0013

p < α ie 0.05

So, H0 is rejected

Hence we state that standard deviation is > 8 miles per hpur

6 0
3 years ago
Can u please help me with this u know who u are
Dahasolnce [82]
4/7s+6/7 is the answer
4 0
3 years ago
Can you please help me?
iren2701 [21]

Answer:

1 = 3

2 = 6

3 = 9

Step-by-step explanation:

for every # it is multiplied by 3 (ex. 7 • 3 = 21, 8 • 3 = 24, ect.)

therefore if it is multiplied by 3 each time

then 1 • 3 = 3

2 • 3 = 6

and 3 • 3 = 9

hope this helps :)

5 0
2 years ago
Read 2 more answers
This is due tm please help​
Mumz [18]

Answer:

25. No slope

Step-by-step explanation:

25. Y2 - Y1 / X2 - X1

= -8 - (-3) / 9 - 9

= -5 / 0

= no slope; straight line

Use this formula (Y2 - Y1 / X2 - X1) for each ques.

8 0
3 years ago
Solve for x:<br><br> 2.5x - 10.5 = 64 (0.5) ^x
Andreyy89
The answer is x=5. This is because you need to simplify both sides and then isolate the variable.
6 0
2 years ago
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