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Mariulka [41]
2 years ago
5

Factor completely.

Mathematics
1 answer:
Svetach [21]2 years ago
3 0

Answer:

in what do u need help?

Step-by-step explanation:

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A study of 138 penalty shots in World Cup Finals games between 1982 and 1994 found that the goalkeeper correctly guessed the dir
vladimir2022 [97]

Answer:

z=-2.09

Step-by-step explanation:

Given that a study  of 138 penalty shots in World Cup Finals games between 1982 and 1994 found that the goalkeeper correctly guessed the direction of the kick only 41% of the time.

Set up hypotheses as:

H_0: p=0.50\\H_a: p

(left tailed test at 5% significance level)

Standard error = 0.043

Sample proportion p = 0.41

p difference = 0.41-0.50=-0.09

Test statistic Z = p diff/std error

= \frac{-0.09}{0.043} \\=-2.09

Z = -2.09

4 0
3 years ago
Need help with point slope form
Alisiya [41]
Hi there!

To find your answer, simply sub in the point and the slope into y-y1=m(x-x1) for y1, x1 and m!

m=-8
point: (1,-8) use this point for x1 and y1
y+8=-8(x-1)

Therefore your equation is y+8=-8(x-1)

Hope this helps!
6 0
3 years ago
Read 2 more answers
Apply Newton’s method to estimate the solution of x3 − x − 1 = 0 by taking x1 = 1 and finding the least n such that xn and xn +
ss7ja [257]

Solution :

Given

$f(x)=x^3-x-1, x_1=1$

$f'(x)=3x^2-1$

Let the initial approximation is $x_1 =1$

So by Newton's method, we get

$x_{n+1}=x_n-\frac{f(x_n)}{f'(x_n)},n=1,2,...$

$x_2=x_1-\frac{f(x_1)}{f'(x_1)}=1-\frac{1^3-1-1}{3(1)^2-1}=1.5$

$x_3=1.5-\frac{(1.5)^3-1.5-1}{3(1.5)^2-1}=1.34782608$

$x_4=1.34782608-\frac{(1.34782608)^3-1.34782608-1}{3(1.34782608)^2-1}=1.32520039$

$x_5=1.32520039-\frac{(1.32520039)^3-1.32520039-1}{3(1.32520039)^2-1}=1.32471817$

$x_6=1.32471817-\frac{(1.32471817)^3-1.32471817-1}{3(1.32471817)^2-1}=1.32471795$

$x_5 \approx x_6$ are identical up to eight decimal places.

The approximate real root is x ≈ 1.32471795

∴ x = 1.32471795

4 0
3 years ago
How many ounces of gold are in a 16​-karat gold chain that weighs 2.6 ​ounces?
oksano4ka [1.4K]

A 16 karat gold means that there are 16 parts of gold in 24 parts of the gold chain. Therefore the weight of the pure gold is:

pure gold = (16 / 24) * 2.6 ounces

<span>pure gold = 1.73 ounces</span>

7 0
3 years ago
Who is life insurance best suited for?
Delvig [45]

Answer:

A) College Student

Step-by-step explanation:

3 0
3 years ago
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