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2 years ago

I’ll mark you brainlist I’ll mark you brainlist

Mathematics

1 answer:

nalin [4]2 years ago

6 0

Answer:

11 now brain list

Step-by-step explanation:

You might be interested in

What is the name of the property of multiplication shown the equation.

Shtirlitz [24]

C- Commutative property.

Explanation: The numbers are flipped around, but still give you the same answer!

5 0

2 years ago

Tell whether the data in the table can be modeled by a linear equation. Explain.

anastassius [24]

Answer:

y = -3x + 7

Step-by-step explanation:

Choosing two points from the given table:

Let (x1, y1) = (-3, 16)

(x2, y2) = (-1, 10)

Plug these given values into the slope formula:

m = (y2 - y1)/(x2 - x1)

= (10 - 16) / (-1 - (-3))

= -6 / (-1 + 3)

= -6/2

= -3

Therefore, the slope is -3.

Next, choose one of the points and plug into the <u>point-slope form</u>:

Let's use (-1, 10) as (x1, y1):

y - y1 = m(x - x1)

y - 10 = -3(x - (-1))

y - 10 = -3(x + 1)

y - 10 = -3x - 3

Add 10 on both sides to isolate y:

y - 10 + 10 = -3x - 3 + 10

y = -3x + 7

8 0

2 years ago

Suppose that a standardized biology exam has a mean score of 80% correct, with a standard deviation of 3. The school administrat

NemiM [27]

Answer:

The 99% confidence interval is between 62.36%(lower bound) and 89.64%(upper bound).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

A sample of 65 students from the freshmen class is used and a mean score of 76% correct is obtained.

This means that $n = 65, \pi = 0.76$

99% confidence level

So $\alpha = 0.005$ , z is the value of Z that has a pvalue of $1 - \frac{0.005}{2} = 0.995$ , so $Z = 2.575$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.76 - 2.575\sqrt{\frac{0.76*0.24}{65}} = 0.6236$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.76 + 2.575\sqrt{\frac{0.76*0.24}{65}} = 0.8964$

0.6236*100 = 62.36%

0.8964*100 = 89.64%

The 99% confidence interval is between 62.36%(lower bound) and 89.64%(upper bound).

6 0

2 years ago

Solve for a. a+(−4)=−13

dangina [55]

In your equation: a+(-4)=-13
you then add four to each side,
so a= negative 13 plus 4
so a= -9

6 0

2 years ago

Read 2 more answers

PLZ HELP!!!

Tpy6a [65]

Answer:

$187.74\:\mathrm{cm}$

Step-by-step explanation:

The area of a rectangle is given by $l\cdot w$ . Therefore, we can set up the following inequality:

$l\cdot 16 \leq 3,003.84$ .

Solving this inequality, we have:

$l \leq 187.74$ .

Therefore, the largest length Carmen's painting can be is $\fbox{$187.74\:\mathrm{cm}$}$ .

3 0

2 years ago