Ask question

Ask question

All categories

3 years ago

12

At the zoo Brooke learned that one of the Rhinos weight 4,897 pounds,one of the giraffe weight 2,667 one of the African elephant

weighs 12,456 pounds, and one of the komoda weights 123 pounds. what is the combination weight of the disease African elephant and the giraffes?

2 answers:

musickatia [10]3 years ago

6 0

12456+2667=15123lbs is how much they weight togheter.

Romashka-Z-Leto [24]3 years ago

3 0

12,456 plus 2,667= 15,123lbs

You might be interested in

Draw a picture to show how 2/3 of jakes pizza can be equal to 3/6 of a pizza from als

Harlamova29_29 [7]

2/3 of a pizza is more than half of the pizza.

3/6 = 1/2, so 3/6 of a pizza is exactly half of the pizza.

Given that two pizzas are of different sizes you need to calculate the areas of each pizza and compare them.

Assumming that the two pizzas are circular, you can calculate the area of each pizza from the formula of the area for a circle:

Area of a circle = π * (radius)^2.

Call r the radius of Jake's pizza and R the radius of Al's pizza. Then:

Area of Jake's pizza = π (r^2) and 2/3 of that is: 2π(r^2) / 3.

Area of Al's pizza = π (R^2) and 1/2 of that is π(R^2)/2

So, what you have to do is to use the radius of each pizza, calculate above formulaes and verify whether the results are the same or not.

3 0

3 years ago

A survey asked whether respondents favored or opposed the death penalty for people convicted of murder. Software shows the resul

pav-90 [236]

Answer:

95% confidence interval for the proportion of the adults who were opposed to the death penalty is (0.668, 0.704).

Step-by-step explanation:

We are given that a survey asked whether respondents favored or opposed the death penalty for people convicted of murder. Software shows the results below, where X refers to the number of the respondents who were in favor.

X = 1,790

N = 2,610

$\hat p$ = Sample proportion = X/N = 0.6858

Firstly, the pivotal quantity for 95% confidence interval for the population proportion is given by;

P.Q. = $\frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }$ ~ N(0,1)

where, $\hat p$ = sample proportion = 0.6858

n = sample of respondents = 2,610

p = population proportion

<em>Here for constructing 95% confidence interval we have used One-sample z proportion statistics.</em>

So, 95% confidence interval for the population proportion, p is ;

P(-1.96 < N(0,1) < 1.96) = 0.95 {As the critical value of z at

2.5% level of significance are -1.96 & 1.96}

P(-1.96 < $\frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }$ < 1.96) = 0.95

P( $-1.96 \times {\sqrt{\frac{\hat p(1-\hat p)}{n} } }$ < ${\hat p-p}$ < $1.96 \times {\sqrt{\frac{\hat p(1-\hat p)}{n} } }$ ) = 0.95

P( $\hat p-1.96 \times {\sqrt{\frac{\hat p(1-\hat p)}{n} }$ < p < $\hat p+1.96 \times {\sqrt{\frac{\hat p(1-\hat p)}{n} } }$ ) = 0.95

<u>95% confidence interval for p</u> = [ $\hat p-1.96 \times {\sqrt{\frac{\hat p(1-\hat p)}{n} }$ , $\hat p+1.96 \times {\sqrt{\frac{\hat p(1-\hat p)}{n} }$ ]

= [ $0.6858-1.96 \times {\sqrt{\frac{0.6858(1-0.6858)}{2610} }$ , $0.6858+1.96 \times {\sqrt{\frac{0.6858(1-0.6858)}{2610} }$ ]

= [0.668 , 0.704]

Therefore, 95% confidence interval for the population proportion of the adults is (0.668, 0.704).

3 0

3 years ago

What's the answer for number 2??

FromTheMoon [43]

Well if there are 3 outcomes just add the two other outcomes and subtract from 1

so 0.4+0.25=0.35

so the third outcomes has a 0.35 chance of happening or 35%

4 0

3 years ago

Which choice represents the expanded form of the expression (x- 2)3

Murljashka [212]

Answer:

(x−2)^3=x^3−6x^2+12x-8

Step-by-step explanation:

if you are talking about the binomial (x−2)^3 you must expand then simplify. (x-2)3 you would just remove the parenthesizes and multiply -2 with 3 to get x-6 but I think you meant (x-2)^3

4 0

3 years ago

The real part of the complex number –5 + 3i is

Firlakuza [10]

<span>A complex number is a number of the form a + bi, where i = and a and b are real numbers. For example, 5 + 3i, - + 4i, 4.2 - 12i, and - - i are all complex numbers. a is called the real part of the complex number and bi is called the imaginary part of the complex number.</span>

5 0

3 years ago

Read 2 more answers