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3 years ago

The equation x2+y2=14 represents a

Mathematics

2 answers:

Akimi4 [234]3 years ago

8 0

Answer:

A Circle.

Step-by-step explanation:

x^2 + y^2 = 14

represents a circle with the center at (0, 0) and the radius is +√14 (because the 14 represents r^2.)

Ann [662]3 years ago

5 0

Answer:

r = √14

Step-by-step explanation:

Is this what you meant? If so heres' the answer

Equation of circle

Center the origin

r = √14

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I need help on both of these ASAP PLEASE

dimaraw [331]

Answer:

#11: last option is answer

#12: first option is answer

Step-by-step explanation:

#11) 5x + 6 ≤ 11

5x ≤ 5

x ≤ 1 to graph this you need a solid dot on 1 and shading to the left

#12) 5p+ 4 > 14

5p > 10

p > 2 to graph this you need an open dot on 2 and shading to the right

8 0

3 years ago

Read 2 more answers

In a sample of 234 individuals over the age of 25, chosen at random from the state of Oregon, 48 did not have a high school dipl

Anna71 [15]

Answer:

The upper bound of a 95% confidence interval for the proportion of individuals over the age of 25 in Oregon who do not have a high school diploma is of 0.2568.

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 z-score that has a p-value of $1 - \frac{\alpha}{2}$ .

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a p-value of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

In a sample of 234 individuals over the age of 25, chosen at random from the state of Oregon, 48 did not have a high school diploma.

This means that $n = 234, \pi = \frac{48}{234} = 0.2051$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2051 + 1.96\sqrt{\frac{0.2051*0.7949}{234}} = 0.2568$

The upper bound of a 95% confidence interval for the proportion of individuals over the age of 25 in Oregon who do not have a high school diploma is of 0.2568.

6 0

3 years ago

Write an expression for the sequence of operations described below.

Hatshy [7]

The expression for the sequence of operations described below is d/3 + 5

<h3>Expressions and equations:</h3>

Let the unknown value be "d"

d divided by 3 is expressed as d/3

Adding 5 to d/3 to get the expression below;

g(d) = d/3 + 5

Hence the expression for the sequence of operations described below is d/3 + 5

Learn more on expressions here: brainly.com/question/29114

3 0

3 years ago

Trigonometry (ASAP) (Urgent)

Olin [163]

Answer:

h = 1.403733341286

Step-by-step explanation:

17.

the triangle of sides ‘l’ and ‘l-h’ is a right angled triangle.

Then

$\cos \theta =\frac{l-h}{l}$

Then

$l\cos \theta =l-h$

Then

$h=l-l\cos \theta$

18.

For l = 6 and θ = 40 :

$h=l-l\cos \theta$

= 6-6cos(40)

= 1.403733341286

8 0

2 years ago

Please Help!

Flura [38]

Let x be the length of the train.

On the basis of the observer;
Speed of the train = x/6

On the basis of the bridge;
Total distance covered by any point of the train= 350+x
Speed = (350+x)/20

Equating the two expressions of speed;
x/6 = (350+x)/20
20(x) = 6(350+x)
20x = 2100+6x
(20-6)x = 2100
14x = 2100
x= 2100/14 = 150 m
Speed = x/6 = (350+x)/20 = 150/6 = 500/20 = 25 m/s.

Therefore,
Length of train = 150 m
Speed of train = 25 m/s

8 0

4 years ago