A rectangle has perimeter 68 cm and length 25 cm. What is its​ width? In centimeters.

Answer:

c and e

Step-by-step explanation:

Answer:

because it has two parts

Step-by-step explanation:

thats what the first one is

Answer:

All functions are relations, but not all relations are functions. A function is a relation that for each input, there is only one output. Here are mappings of functions. The domain is the input or the x-value, and the range is the output, or the y-value.

Answer:

Step-by-step explanation:

A relation between members of two sets X and Y is any set of ordered pairs {(x1,y1) (x2,y2) … }, finite or infinite in their number, provided the first member is from X and the second member is from Y. (Let’s not mention the uncountable possibility here).

E.g., if X = {Sunday, Monday, …, Saturday} and Y = {1,2, …, 31}, then the set {(Monday,1) (Tuesday,2) … (Monday,8) (Tuesday,9) … (Sunday,28)} is a useful relation for some February calendar, somewhere. It is “one-to-many”. And note that set Y need not be covered, but X must be. This distinguishes the domain of the relation (days of the week here) from its codomain (whole numbers 1 to 31 here).

Considering the vast set of all relations, there is one subset of great importance, those relations that have unique codomain values for each domain value. That is, each x in X is paired unambiguously with exactly one y in Y. These special relations are functions. The set of y in Y which have been paired with some x in X is called the range of f. Functions may still be “many-to-one”, as in y = r(x) which gives x rounded to the nearest integer. Thus r(2.3) = r(1.9) = 2.

Within the subset of functions are the one-to-one functions, which also have the property that every y in the range is paired with exactly one x in the domain. Because of this, these are the only functions that have an inverse function. Thus, the inverse function can be written as {(y1,x1) (y2,x2) … }. This shows that the domain and range of the original function are exactly exchanged in the inverse function.

E.g., y = tan(x) is one-to-one with domain [-pi/4 , pi/4] and range [-1,1]. Its inverse is x = arctan(y) with domain [-1,1] and range [-pi/4 , pi/4]. The roles of x and y are unambiguous, and shouldn’t be exchanged: x always in [-pi/4 , pi/4] and y always in [-1,1].

Answer: Unknown...Well, just simplify.

Step-by-step explanation:

Since it says x and y, that is NOT a number. So the real question is, how can we solve the problem without numbers? Well that's pretty simple and easy. Since we don't know the number, we will just have to simplify. With no actual number, simplifying is basically the answer. Unless, you can find out the answer.

Dan has the amount of money left would be 10 - xy which is the form of an expression.

Algebraic expressions are mathematical statements with a minimum of two terms containing variables or numbers.

We have to determine the amount of money Dan has left.

We must only generalize since we don't know the exact quantity. Having no method of solving,

Dan had $10. He bought x pencils, each costing y cents which are given in the question.

quantity of pencils = x and cost of pencil = y

As per the given condition, the required solution would be:

⇒ remaining amount = 10 - quantity of pencils × cost of pencil

⇒  remaining amount = 10 - (x) × (y)

⇒  remaining amount = 10 - xy

Therefore, Dan has the amount of money left would be 10 - xy which is the form of an expression.

Learn more about the algebraic expression here :

brainly.com/question/21751419

#SPJ2

Step-by-step explanation:

#4: 156-120= 36

36÷4=9

Answer: B; 9 people per year

Step-by-step explanation:

#5: 84-60=24

24÷4=6

Answer: C; 6 degrees Fahrenheir per hour

Answer:$20

Step-by-step explanation:

16 divided by 10 = 1.6 (10%)

1.6 times 2 = 3.2 (20%)

16 + 3.2 = 19.2

1.6 divided by 2 = 0.8 (5%)

19.2 + 0.8 = 20$

Let me know if I helped! :D

Answer:

what are you asking could you clarify, please

Step-by-step explanation:

Answer:

Which fraction represents Lena's speed in miles per hour?

Answer = 3 / 1/4 (three over one fourth)

What is Lena's speed in miles per hour?

Answer = 3 / 1/4 = 12 (three over one fourth equals twelve)

Step-by-step explanation:

i did it on iready and got it right c:

[tex]f(x) = (x - 4)(x - 3) \\ g(x) = \frac{7}{(x - 4)(x + 4)} \\ f.g = (x - 4)(x - 3) \times \frac{7}{(x - 4)(x + 4)} \\ (x-4)s \: are \: simplified \\ f.g = \frac{(x - 3) \times 7}{x + 4} = \frac{7x - 21}{x + 4} \\ (f.g) (x) = \frac{7x - 21}{x + 4} [/tex]

Answer:

there were 12 blue balloons at Kali’s party

Step-by-step explanation:

Answer:

12

Step-by-step explanation:

Answer:

0.0004

Step-by-step explanation:

divide the energy value by 1000

0.4/1000

Answer:

The equation is [tex]199+49+79m=880[/tex]

Kyle has had cable for 8 months.

Step-by-step explanation:

Let m denotes number of months cable services have been used.

Initial charge for the cable box = $199

Setup fee = $49

Monthly charges for cable services = $79

Also,

Total bill over a certain number of months, m = $880

Therefore,

[tex]199+49+79m=880[/tex]

Now solve the equation.

[tex]199+49+79m=880\\248+79m=880\\79m=632\\m=\frac{632}{79}\\ m=8[/tex]

That is Kyle has had cable for 8 months.

Answer:

answer below.

Step-by-step explanation:

hey, it's a little blurry so i hope i got these correct:)

1. rational

2. natural, whole, integer, rational

3. irrational

4. integer, rational

5. rational

6. integer, rational

7. 2

8. - π

9. -2

10. 1

there are also other possible answers for some, but i chose these.

Answer: 3 I think !

Step-by-step explanation:

Answer:

3000 meters

Step-by-step explanation:

1 kilometer = 1000 meters

3 kilometers = 3(1000 meters)

3 kilometers = 3000 meters

Hope this helps!!!

Answer:

[tex]d=4[/tex]

Step-by-step explanation:

Distance Formula: [tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

Simply plug in the 2 coordinates into the distance formula to find distance d:

[tex]d=\sqrt{(-5-(-5))^2+(6-2)^2}[/tex]

[tex]d=\sqrt{(-5+5)^2+(4)^2}[/tex]

[tex]d=\sqrt{(0)^2+16}[/tex]

[tex]d=\sqrt{0+16}[/tex]

[tex]d=\sqrt{16}[/tex]

[tex]d=4[/tex]

Answer:

Step-by-step explanation:

I'm still not exactly sure what the question really is, but the level suggests that it is

y = (6/7)x + 5

Any line that is parallel to this line has a slope of 6/7

Any line that is perpendicular to this line is a little more complicated.

slope of given line * slope of perpendicular line = - 1

6/7 * perpendicular slope = - 1  

Multiply by 7

6*perpendicular slope = - 7

Divide by 6

perpendicular slope = - 7/6

Answer:

The Coefficient to 5 + 9y is 9

Step-by-step explanation:

The leading term in a polynomial is the term with the highest degree.

9y

The leading coefficient in a polynomial is the coefficient of the leading term.

9

espero que esto ayude, y que tengas una buena noche

Answer:

y= 1/4x - 4

Step-by-step explanation:

use point slope form which is:

y - y1 = m(x - x1)

we know that the slope will be 1/4 because perpendicular is a negative reciprocal.

plug everything into point slope form:

y + 3 = 1/4 ( x - 4)

we distribute the 1/4 and then subtract the three and we get our answer

y= 1/4x - 4

Answer:

14,17,20

Step-by-step explanation:

Holy crp I'm sooo sorry. I started studying for my classes and didn't see this.

The y's increase +3 for every positive 1.

Answer:

38

Step-by-step explanation:

the rate of change is 3 and when x = 0 y = -1 so you multiply 3 times 13 witch equals 39 + (-1) = 38

Answer:

2

Step-by-step explanation:

2x8=16, 2x14=28, and 2x28=56

Answer:

69 3/4

Step-by-step explanation:

The stock market goes down to 50 3/4 at the beginning of the day

At the end of the day it goes up to 120 1/2

Therefore total change in the stock market from the beginning to the end of the day can be calculated as follows

= 120 1/2 - 50 3/4

= 241/2 - 203/4

= 279/4

= 69 3/4

Hence the total change in the stock market from the beginning to the end of the day is

69 3/4

Answer:

Yes

Step-by-step explanation:

A function is continuous on an interval if the graph has no breaks, jumps, or holes. You can draw it without picking up your pencil.

Answer:

28/5 or 5  3/5

Step-by-step explanation:

First you need to make the mixed number into an improper fraction, like this:

3 1/2 turns into 7/2

Next you will need to do the reciprocal of division and inverse operation:

7/2 times 8/5

Then solve it:

7/2 * 8/5 = 56/10

Last simplify:

28/5

or

5  3/5

Step-by-step explanation:

we know that midpoint of a segment is found from formula

x=(x1+x2)/2

and y=(y1+y2)/2

in this case x=3 and y=4 x2=-1 and y2=2

so x1=2x-x2 =2*3-(-1)=6+1=7

y1=2y-y2=2*4-2=8-2=6

the other endpoint is (7,6)

Answer:

She paid $5.25

Step-by-step explanation:

You would multiply 15 times 0.65 and then subtract that from 15 or you could multiply 15 times 0.35 because 100-65 is 35.