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2 years ago

Keith writes the numbers 1 to 20 on pieces of paper and places them in a hat.

1 answer:

4 0

To get the answer use what you know divide it and use Algebra if you know any and also ask for help scan your math that’s what Brainly is for trust me

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Write an equation of the line in slope-intercept form. (Pls answer fast)<br><br> Y=

nydimaria [60]

Answer:

$y = - \frac{1}{4} x + 3$

6 0

2 years ago

In a study of 799 randomly selected medical malpractice lawsuits, it was found that 499 of them were dropped or dismissed. Use

Mademuasel [1]

Answer:

Claim is true that most medical malpractice lawsuits are dropped or dismissed.

Step-by-step explanation:

Given :In a study of 799 randomly selected medical malpractice lawsuits, it was found that 499 of them were dropped or dismissed.

To Find : Use a 0.05 significance level to test the claim that most medical malpractice lawsuits are dropped or dismissed.

Solution:

n = 799

x = 499

We will use one sample proportion test

$\widehat{p}=\frac{x}{n}\\\widehat{p}=\frac{499 }{ 799}\\\widehat{p}=0.6245$

We are given that the claim is most medical malpractice lawsuits are dropped or dismissed.

Probability of dropped or dismissed is 1/2

$H_0:p=0.5\\H_a:p>0.5$

Formula of test statistic = $\frac{\widehat{p}-p}{\sqrt{\frac{p(1-p)}{n}}}$

= $\frac{0.6245-0.5}{\sqrt{\frac{0.5(1-0.5)}{799}}}$

= 7.038

p value (z>7.038) is 0

α =0.05

So, p value < α

So, we reject the null hypothesis

So,claim is true

Hence most medical malpractice lawsuits are dropped or dismissed.

6 0

3 years ago

Find the center and the radius of the circle with the equation: <br> x2+6x+y2+4y+12=0

Andrews [41]

Answer:

centre = (- 3, - 2) , radius = 1

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

Given

x² + 6x + y² + 4y + 12 = 0 ( subtract 12 from both sides )

x² + 6x + y² + 4y = - 12

Use the method of completing the square on the x and y terms

add ( half the coefficient of the x/ y terms )² to both sides

x² + 2(3)x + 9 + y² + 2(2)y + 4 = - 12 + 9 + 4

(x + 3)² + (y + 2)² = 1 ← in standard form

with centre = (- (- 3), - (- 2)) and r² = 1, that is

centre = (- 3, - 2) and radius = 1

8 0

3 years ago

What is the value of 7(4 + x) when x = 5?

NikAS [45]

Step-by-step explanation:

❉ $\underline{ \underline{ \sf{Given}}} :$

x = 5

❉ $\underline{ \underline{ \sf{To \: find}}} :$

value of 7 ( 4 + x )

Plug the value of x and simplify :

⟿ $\sf{7(4 + 5)}$

Add the numbers : 4 and 5

⟿ $\sf{7 \times 9}$

Multiply 7 by 9

⟿ $\boxed{ \sf{63}}$

$\red{ \boxed{ \boxed{ \tt{⇾Our \: final \: answer : 63}}}}$

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8 0

3 years ago

Which choice shows y=3x+2 and y=3x2 correctly paired with their graphs?

Blababa [14]

Answer:

The second one

7 0

2 years ago