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Aliun [14]
3 years ago
14

Please help! *Math (10 pts)*

Mathematics
2 answers:
Wewaii [24]3 years ago
8 0
Its linear because can be quadratic you feel me?
Allisa [31]3 years ago
6 0

It's linear

If you evaluate x when it's 0 you'll get the cut in y, that means the function will pass on (0,7)

The formula for linear functions is y=mx +b

In this case b is 7

M=7-5/0+1

M=2

Now you just write the function down, it would be

F(x) =2x + 7

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Could you help me. ​
Sedbober [7]

Answer:

X-Large

Step-by-step explanation:

8 0
3 years ago
A random sample of 500 registered voters in Phoenix is asked if they favor the use of oxygenated fuels year-round to reduce air
Stells [14]

Answer:

a) 0.0853

b) 0.0000

Step-by-step explanation:

Parameters given stated that;

H₀ : <em>p = </em>0.6

H₁ : <em>p  = </em>0.6, this explains the acceptance region as;

p° ≤ \frac{315}{500}=0.63 and the region region as p°>0.63 (where p° is known as the sample proportion)

a).

the probability of type I error if exactly 60% is calculated as :

∝ = P (Reject H₀ | H₀ is true)

   = P (p°>0.63 | p=0.6)

where p° is represented as <em>pI</em><em> </em>in the subsequent calculated steps below

   

    = P  [\frac{p°-p}{\sqrt{\frac{p(1-p)}{n}}} >\frac{0.63-p}{\sqrt{\frac{p(1-p)}{n}}} |p=0.6]

    = P  [\frac{p°-0.6}{\sqrt{\frac{0.6(1-0.6)}{500}}} >\frac{0.63-0.6}{\sqrt{\frac{0.6(1-0.6)}{500}}} ]

    = P   [Z>\frac{0.63-0.6}{\sqrt{\frac{0.6(1-0.6)}{500} } } ]

    = P   [Z > 1.37]

    = 1 - P   [Z ≤ 1.37]

    = 1 - Ф (1.37)

    = 1 - 0.914657 ( from Cumulative Standard Normal Distribution Table)

    ≅ 0.0853

b)

The probability of Type II error β is stated as:

β = P (Accept H₀ | H₁ is true)

  = P [p° ≤ 0.63 | p = 0.75]

where p° is represented as <em>pI</em><em> </em>in the subsequent calculated steps below

  = P [\frac{p°-p} \sqrt{\frac{p(1-p)}{n} } }\leq \frac{0.63-p}{\sqrt{\frac{p(1-p)}{n} } } | p=0.75]

  = P [\frac{p°-0.6} \sqrt{\frac{0.75(1-0.75)}{500} } }\leq \frac{0.63-0.75}{\sqrt{\frac{0.75(1-0.75)}{500} } } ]

  = P[Z\leq\frac{0.63-0.75}{\sqrt{\frac{0.75(1-0.75)}{500} } } ]

  = P [Z ≤ -6.20]

  = Ф (-6.20)

  ≅ 0.0000 (from Cumulative Standard Normal Distribution Table).

6 0
3 years ago
Following the formula (-b+-√b^2-4ac) / 2a, working out -√b^2 - 4ac) / 2a
lina2011 [118]

Answer:

Jsjsjsnsnsksjssshjsiosjs

8 0
3 years ago
Caleb solved this equation and recorded his work. 7.4x + 4.1(2x − 4) = −2.3(x − 6) − 21.6 1. 7.4x + 8.2x − 16.4 = −2.3x + 13.8 −
slamgirl [31]

Answer:

Option B.

Step-by-step explanation:

The given equations is

7.4x+4.1(2x-4)=-2.3(x-6)-21.6

The correct steps to solve the above equation are

1. Using distributive property, we get

7.4x+8.2x-16.4=-2.3x+13.8-21.6

2. Combining like terms, we get

15.6x-16.4=-2.3x-7.8

3. Using addition property of equality, add 2.3x on both sides.

17.9x-16.4=-7.8

4. Using addition property of equality, add 16.4 on both sides.

17.9x=8.6

5. Using division property of equality, divide both sides by 17.9.

x\approx 0.48

In step 2, the like terms were not combined properly on the right side of the equation.  

13.8-21.6=-7.8\neq 35.4

Therefore, the correct option is B.

5 0
3 years ago
Read 2 more answers
What’s 1/2 times x = 1/2 times 7
Vedmedyk [2.9K]

Answer:

1.75

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
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