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3 years ago

Come on y'all dont miss your shot At GETTING MARKET BRAINLIEST AND EXTRA POINTS

Mathematics

1 answer:

Andrej [43]3 years ago

5 0

Answer:

(Part A) The formula for finding the area of a circle is πr². (Part B) The radius of that circle would be 5.27 m. 10.54 m cut in half would be 5.27 m. (Part C) The area of this circle would be approx. 87.21 m². Using the formula from Part A, first square 5.27. That will equal 27.7729. Now, multiply that by 3.14 (I used that value for π) to get 87.206906 m². However, we have to round to the nearest hundredth, so 87.21 m² is the answer.

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If the fence is open at a fifty-degree angle how much more angles until it flat on the wall

Alinara [238K]

Well flat means open so 180°
180° - 50° = 130° is the answer

4 0

3 years ago

Mortgage rates: Following are interest rates (annual percentage rates) for a 30-year fixed rate mortgage from a sample of lender

andreev551 [17]

Answer:

98% Confidence interval: (4.144 ,4.498)

Step-by-step explanation:

We are given the following in the question:

4.751, 4.373, 4.177, 4.676, 4.425, 4.228, 4.125, 4.251, 3.951, 4.192, 4.291, 4.414

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{51.854}{12} = 4.321$

Sum of squares of differences = 0.5602

$s = \sqrt{\dfrac{0.5602}{11}} = 0.226$

98% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 11 and}~\alpha_{0.02} = \pm 2.718$

$4.321 \pm 2.718(\frac{0.226}{\sqrt{12}} ) = 4.321 \pm 0.1773 = (4.144 ,4.498)$

3 0

4 years ago

Read 2 more answers

Graph the function. f(x)=|x+2|-1

timurjin [86]

Answer:

a v-shaped graph with a minimum at (-2,-1) and x-intercepts at -1 and -3

Step-by-step explanation:

if you need to graph the function then start by creating an x-y table of values:

when x=0, y=1

so you the point: (0, 1)

when x=2, y=3

you have another point: (2,3)

when x=-2, y = -1

third point: (-2,-1)

when x=-3, y = 0

fourth point: (-3,0)

7 0

2 years ago

Read 2 more answers

Variables y and x have proportional relationship and y=21 when x=14 what is the value of x when y=12

Lilit [14]

The value of x is 8 when y = 12 if variables x and y have proportional relationship.

According to the given question.

Variables y and x have proportional relationship.

⇒ y ∝ x

Let k be the constant of proportionality.

⇒ y = kx

Also, it is given that

y = 21 when x = 14

Substitute the value of y = 21 and x = 14 in y = kx to find the value of k.

21 = k(14)

⇒ k = 21/14

⇒ k = 3/2

Therefore, the value of x when y = 12

y = kx

⇒ 12 = (3/2)x

⇒ 12 × 2 = 3x

⇒ 24 = 3x

⇒ x = 24/3

⇒ x = 8

Hence, the value of x is 8 when y = 12.

Find out more information about proportional relationship here:

brainly.com/question/12917806

#SPJ4

8 0

2 years ago

Read 2 more answers

How to know what to do next in a geometry two column proof?

GREYUIT [131]

To do a two-column proof, you must know the definitions of the terms that are being used. Also, you must know the postulates and theorems you have learned so far. You look at the given information, and using the definitions, postulates, and theorems, you reason in your mind how to go from the given to the conclusion, step by step. You write each step and the accompanying reason that allows you to conclude each step.

4 0

3 years ago