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2 years ago

Which of the following are quadratic equations

Mathematics

1 answer:

Igoryamba2 years ago

6 0

Answer:

<h2>HOPE U UNDERSTOOD</h2>

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ANY DOUBTS? COMMENT PLEASE

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What is the solution to the system of equations?

Dvinal [7]

X = 4
y = 0
is the answer to the system of equation

8 0

3 years ago

I need help I'm stuck ?

likoan [24]

$v = \frac{4}{3} \times \pi \times ({ \frac{8}{2} })^{3} \\$

$v = \frac{4}{3} \times 3 \times {4}^{3} \\$

$v = {4}^{4}$

$v = {2}^{8}$

$v = 256 \: \: {cm}^{3}$

7 0

2 years ago

The 2010 General Social Survey reported a sample where about 48% of US residents thought marijuana should be made legal. If we w

Sati [7]

Answer:

The sample size is $n = 600$

Step-by-step explanation:

From the question we are told that

The sample proportion is $\r p = 0.48$

The margin of error is $MOE = 0.04$

Given that the confidence level is 95% the level of significance is mathematically represented as

$\alpha = 100 - 95$

$\alpha = 5 \%$

$\alpha = 0.05$

Next we obtain the critical value of $\frac{\alpha }{2}$ from the normal distribution table , the values is

$Z_{\frac{\alpha }{2} } = 1.96$

The reason we are obtaining critical value of $\frac{\alpha }{2}$ instead of $\alpha$ is because

$\alpha$ represents the area under the normal curve where the confidence level interval ( $1-\alpha$ ) did not cover which include both the left and right tail while

$\frac{\alpha }{2}$ is just the area of one tail which what we required to calculate the margin of error

Generally the margin of error is mathematically represented as

$MOE = Z_{\frac{\alpha }{2} } * \sqrt{ \frac{\r p(1- \r p )}{n} }$

substituting values

$0.04= 1.96* \sqrt{ \frac{0.48(1- 0.48 )}{n} }$

$0.02041 = \sqrt{ \frac{0.48(52 )}{n} }$

$0.02041 = \sqrt{ \frac{ 0.2496}{n} }$

$0.02041^2 = \frac{ 0.2496}{n}$

$0.0004166 = \frac{ 0.2496}{n}$

=> $n = 600$

5 0

3 years ago

The measure of ∠1 is 65°. What is the relationship between ∠1 and ∠2

bagirrra123 [75]

Answer:

if its complemantary it is 24 degrees

if it supplemntary it is 115 degrees

Step-by-step explanation:

7 0

3 years ago

Hey 20 points for the first person to show work and answer this

Harrizon [31]

Step-by-step explanation:

First, the pizza is 18 inches in diameter, so

$d = 18$

and, because the radium is half of the diameter,

$r = 9$

<u>Note that the units are inches.</u>

Using the equation

$a = \pi r ^{2}$

where a is the area of a circle, we know that the area of the whole pizza is approx.254.5 square inches. Divide by 8 to find the area of 1/8 of a pizza. Each slice will have an area of approx. 32 square inches. For a precise result, the answer is

$a(s)= \frac{(\pi \times 9^{2})}{s}$

where a(s) is the area of a slice of pizza, and s is the total number of slices, given they are equal in size.

5 0

3 years ago