Which of the following terms best describes the set of all points in a plane for
which the difference between the distances of a given point to two fixed foci
equals a certain constant?
Focus
Focus
A. Hyperbola
B. Circle
C. Ellipse
D. Parabola

someone HELPP PLSSS

Answer:

75

Step-by-step explanation:

64.4-16.1=48.3

48.3 divided by 64.4= 0.75

0.75x100=75

Answer:

mYW = 151°

Step-by-step explanation:

∠XWY is an inscribed angle because it has a vertex on the circle. This means that m∠XWY is half of the arc it intercepts, which is XY. We can model the situation using an equation:

m∠XWY = mXY / 2

37° = mXY / 2

mXY = 74°

All arcs in a circle add up to 360°. Because of this, we can say:

mXY + mYW + mWX = 360°

74° + mYW + 135° = 360°

209° + mYW = 360°

mYW = 151°

Answer:

We have

n[T]=4+20-x+x+23-x

32=47-x

x=47-32

x=15

so

the number of men questioned who have

the number of men questioned who haveall three characteristics is 15.

again

n[S]=6+20-x+x+24-x=50-x=50-15=35

again

we have

n[U]=n[T]+n[s]+N only [ B]

54=32+35+N only [ B]-n[T and S]

N only [ B]=54-67+20=7

who are bald but

who are bald butnot tall a slim is 7.

Answer:

4⁻⁴

Step-by-step explanation:

4⁵ × 4⁻⁷ ÷ 4⁻²

⁺ ⁵ ⁻ ⁷

= ⁻²

⁻ ² ⁻ ²

= ⁻ ⁴

4⁻⁴

Answer:

4) 2xy(x^2-2x-8)  2xy(x-4) (x+2)

5) 3(x^2-9x-10   3(x+1) (x-10)

Step-by-step explanation:

Answer:

No solutions.

Step-by-step explanation:

When given the following system of equations,

[tex]\left \{ {x-2y=-2} \atop {3x-6y=30}} \right.[/tex]

Solve by the process of elimination. The process of elimination is when one manipulates one or both of the equations such that one of the variables is the inverse of the other variable in its corresponding equation. When one adds the system, one of the variables will cancel, and one can solve for the other variable, then back solve for the canceled variable.

In this case, one can see that all terms in the second equation have a common factor of (3), to make manipulating the equation easier, divide the entire equation by (3).

[tex]\left \{ {{x-2y=-2} \atop {3x-6y=30}} \right.[/tex]

[tex]\left \{ {{x-2y=-2} \atop {x-2y=10}} \right.[/tex]

However, in doing so, one can see that the left sides of the equation are equal, however, the right side is not. Such a statement is not possible, thus there are no solutions to this system of equations.

Answer:

c

Step-by-step explanation:

Answer:

A . 36

Step-by-step explanation:

We are given a total of 176 interviewed by Oliver and a total of 140 interviewed by Jenny. To find how many more 10th graders than 9th graders were interviewed, subtract the totals given

176 - 140 = 36

This is how we came to the answer:

We are given 70% of the 10th-grade and 30% of the 9th-grade with a total of 176 for Oliver.

While we're given 75% of the 9th-grade class and 25% of the 10th-grade with a total of 140 interviewed by Jenny

Oliver's Interviewees

Firstly, let's find what the number of 9th-graders was interviewed by Oliver; find the percentage of the 9th-graders by the total;

70% of 176 =

[tex]\frac{70}{100} * \frac{176}{1}[/tex]

Cross multiply

123.2 were 10-graders interviewed by Oliver

Now, to find the number of 9th-graders was interviewed by Oliver; find the percentage of the 9th-graders by the total;

30% of 176 =

[tex]\frac{30}{100} * \frac{176}{1}[/tex]

Cross multiply

52.8 were 9th-graders interviewed by Oliver

Jenny's Interviewees

Firstly, let's find what the number of 9th-graders was interviewed by Jenney; find the percentage of the 9th-graders by the total;

75% of 140 =

[tex]\frac{75}{100} * \frac{140}{1}[/tex]

Cross multiply

105 students were 9th-graders interviewed by Jenney.

Now, to find the number of 10th-graders was interviewed by Jenney; find the percentage of the 10th-graders by the total;

25% of 140 =

[tex]\frac{25}{100} * \frac{140}{1}[/tex]

Cross multiply

35 students were 10th-graders interviewed by Jenney.

Total calculation

Use the results and sum them up by 9th-grade plus 9th-grade and 10th-grade plus 10-grade. Then subtract the amount gotten from 9th-grade away from the amount gotten from 10th-grade;

Oliver's 9th-grade = 52.8

Jenny's 9th-grade = 105

105 + 52.8 = 157.8

Oliver's 10th-grade = 123.2

Jenny's 10th-grade = 35

123.2 + 35 = 158.2

Total calculation: 158. 2 - 157.8 = 0.4

Oliver's Interviewees Percentage

Since we are given 30% of the 9th-grade class and 70% of the 10th-grade class, first, let's add the percentages. To do so, set it up as a fraction;

30% = [tex]\frac{30}{100}[/tex] while, 70% = [tex]\frac{70}{100}[/tex]

Now solve it;

[tex]\frac{30}{100} + \frac{70}{100}[/tex]

Simplify; cancel bottom zero's;

[tex]\frac{30}{1} + \frac{70}{1}[/tex]

Add the remaining numerators;

30 + 70 = 100

Which is 100%

Jenny's Interviewees Percentage

Since we're given 75% of the 9th-grade class and 25% of the 10th-grade, it will end up the same answer. I'll show you how; first, let's add the percentages. To do so, set it up as a fraction;

25% = [tex]\frac{25}{100}[/tex] and, 75% = [tex]\frac{75}{100}[/tex]

Now solve it;

[tex]\frac{25}{100} + \frac{75}{100}[/tex]

Simplify; cancel bottom zero's

[tex]\frac{25}{1} + \frac{75}{1}[/tex]

Add the remaining numerators;

25 + 75 = 100

Meaning 100%

Answer:

450$

Step-by-step explanation:

So lets add otgether everything that she NEEDS to buy, to see how much of 1500$ she can use on what she WANTS to buy.

So:

500+50+100+100+300

=

1050

This is the total cost of what she NEEDS to buy

Now lets subtract this from her income:

1500-1050

=

450

So we now know that the amount of money she has left to spend on what she WANTS is 450$

Hope this helps! :)

Answer:

Alright, with this, its essentially asking for you to plug in X into each equation for the answer.

With the first box, it asks for y = 5 - x, given the x = -2.

y = 5-x

y=5-(-2)

y=5+2

y=7

With the second box down, it wants things a bit differently, it gives you the y value, and wants for you to find the x. Given this, this question can be done backwards for the x value.

y = 5-x

6 = 5-x

x+6= 5

x=-1

With the third one, its the same thing as with the first box.

y = 5-x

y = 5-0

y = 5

Same thing with the fourth one.

y = 5-1

y = 4

If you have any question about the process or the answer, please comment below and I can help explain on what you're stuck on.

Answer:

Picture 1: (-2, 7), (-1,6), (0,5), (1,4)

Picture 2: (-2, -6), (4,6), (0,-2), (1,0)

Picture 3: (-1, -4), (8,5), (1,-2), (5,2)

Answer:

4 in.3 and 12 cubic yards

Step-by-step explanation:

3 means three sides that a volume has and 2 means its a cube or rectangle shaped figure which i think has 2 sides. cubic means 3 as well that describes volume.

I searched this up

Answer:

(x - 8)² + (y - 10)² = 36

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Pre-Calculus

Circle Center Formula: (x - h)² + (y - k)² = r²

Step-by-step explanation:

Step 1: Define

Identify

(h, k) = (8, 10)

r = 6

Step 2: Find Equation

Answer:

there are seven variable terms

Step-by-step explanation:

variables are letters (a, b, c, etc.)

i hope this helps :)

Answer:

The answer is 4 because are all separate variables (also  combines into one variable)

Step-by-step explanation:

Answer:

1 2/3 hours Levon studied.

Step-by-step explanation:

2/3 as long = multiply by 2 1/2 of the time.

2.5 x 2/3 = 1.66666667

Simplify:

1.66666667 = 1 2/3

Answer:

Corine= 2 1/2 hours

Levon= 1 2/3 hours

Answer:

43.2 inches  is  3.6ft

1.2 yards is 3.6ft

Answer:

-8,-5

Step-by-step explanation:

(x,y)... (-x,-y)

Answer:

√80

Step-by-step explanation:

Pythagorean Theorem: a^2+b^2=c^2

a = 4, b = 8

4^2+8^2 = 16+64 = 80

c^2 = 80

c^2 = √80 ≈ 8.94

Answer:

7.95+1t

Step-by-step explanation:

7.95 is the base price, if you want to order a cheeseburger you HAVE to pay 7.95. Now if you want to order toppings, one topping costs 1 dollar. That's why it is 1t. So the final equation is .....

7.95+1t

Hope this helped!! :D

Answer:

C=7.95+1.00t

Step-by-step explanation:

Answer:

b. 600

Step-by-step explanation:

subtract money from parents from tuition

divide by months

Answer:

15m

Step-by-step explanation:

we know that

height(m):shadow (m)

we need to convert the cm to meters

1m: .4m

x: 6m

To solve for x just mulitply the 1 by 15 (15 because this is what we mulitplied the .4 meters to get to 6)

The answer is therefore 15m

Answer:

2

Step-by-step explanation:

Find the prime factorization of 58

58 = 2 × 29

Find the prime factorization of 100

100 = 2 × 2 × 5 × 5  

Therefore, GCF = 2

Answer:

The answer is 2. Knew this already.

Answer:

Number of 1/8 cups of sugar needed = 2

Number of 1/8 cups of whole wheat flour needed = 6

Number of 1/8 cups of all purpose flour needed = 4

Step-by-step explanation:

Recipes Kelly needs:

Sugar = 1/4 cups

Whole wheat flour = 3/4 cups

All purpose flour = 1/2 cups

She could only find her ⅛ cup measuring cup.

How many ⅛ cups will she need for each ingredient?

Number of 1/8 cups of sugar needed = cups of Sugar needed / 1/8 cups

= 1/4 ÷ 1/8

= 1/4 × 8/1

= 8/4

= 2

Number of 1/8 cups of sugar needed = 2

Number of 1/8 cups of whole wheat flour needed = cups of whole wheat flour needed / 1/8 cups

= 3/4 ÷ 1/8

= 3/4 × 8/1

= 24/4

= 6

Number of 1/8 cups of whole wheat flour needed = 6

Number of 1/8 cups of all purpose flour needed = cups of all purpose flour needed ÷ 1/8 cups

= 1/2 ÷ 1/8

= 1/2 × 8/1

= 8/2

= 4

Number of 1/8 cups of all purpose flour needed = 4

Answer:

About 9.2 units

Step-by-step explanation:

[8-(-1)^2]+[(5-3)^2]

81+4

sqrt(85)

9.2

Brainliest appreciated :)

Answer:

habla no espanyol

Step-by-step explanation:

Answer:

True

Step-by-step explanation:

In a normal distribution, 68% of the data falls within 1 standard deviation of the mean is true.

A normal distribution is a continuous probability distribution that describes a symmetric, bell-shaped curve of data.

It is also known as a Gaussian distribution or a bell curve.

The normal distribution is used to model many real-world phenomena, such as measurements of height, weight, blood pressure, and IQ scores, among others.

We have,

In a normal distribution, 68% of the data falls within 1 standard deviation of the mean.

This is known as the Empirical Rule or the 68-95-99.7 rule, which states that:

- approximately 68% of the data falls within one standard deviation of the mean

- approximately 95% of the data falls within two standard deviations of the mean

- approximately 99.7% of the data falls within three standard deviations of the mean.

Thus,

In a normal distribution, 68% of the data falls within 1 standard deviation of the mean is true.

Learn more about normal distribution here:

https://brainly.com/question/31327019

#SPJ7