David made an error when determining the product of (–2.5)(–8.3). Step 1: (–2.5)(–8.3) = (–8.3)(–2.5) Step 2: = (–8.3)(–2) + (–8.3)(–0.5) Step 3: = (–16.6) + (–4.15) Step 4: = –20.75 In which step did David make his first error? Step 1 Step 2 Step 3 Step 4

Answer:

No it is not the same

Step-by-step explanation:

A real number is any number, positive or negative, whole number or decimal.

(EX) 1, 1.00567, -2, -2.659365

Any number!

Answer:

c and e

Step-by-step explanation:

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:

h=−6.28r2+s/6.28r

Step-by-step explanation:

Step 1: Flip the equation.

6.28hr+6.28r2=s

Step 2: Add -6.28r^2 to both sides.

6.28hr+6.28r2+−6.28r2=s+−6.28r2

6.28hr=−6.28r2+s

Step 3: Divide both sides by 6.28r.

6.28hr/6.28r=−6.28r2+s/6.28r

h=−6.28r2+s/6.28r

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:

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:

2

Step-by-step explanation:

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

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:

A. [tex]\frac{2}{5}[/tex]

B. [tex]\frac{3}{2}[/tex]

C. [tex]\frac{3}{5}[/tex]

Step-by-step explanation:

A. 8:20

   4: 10

   2: 5 = [tex]\frac{2}{5}[/tex]

B. 12: 8

    3: 2 = [tex]\frac{3}{2}[/tex]

C. 12: 20

    3: 5 = [tex]\frac{3}{5}[/tex]

Answer:

3000 meters

Step-by-step explanation:

1 kilometer = 1000 meters

3 kilometers = 3(1000 meters)

3 kilometers = 3000 meters

Hope this helps!!!

90° counterclockwise rotation

Answer:

c

Step-by-step explanation:

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

Answer: 3 I think !

Step-by-step explanation:

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:

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:

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:

see below

Step-by-step explanation:

      = y (1 + 2/5)

      = 7/5 y

     = 1y - 0.32y

     = 0.68 y

      = y (1 - 2/5)

      = 3/5 y

     = 1y + 0.32y

     = 1.32 y

Answer:

Step-by-step explanation:

y + 2/5y

     = y (1 + 2/5)

     = 7/5 y

y - 0.32 y (just add)

    = 1y - 0.32y

    = 0.68 y

y - 2/5y

     = y (1 - 2/5)

     = 3/5 y

y + 0.32 y (just add)

    = 1y + 0.32y

    = 1.32 y

Answer: your answer would be c (-12,-24)

Step-by-step explanation:    the coordinates of R is (-2,-4) so you do 6 times -2 which gives you -12 and then 6 times -4 which gives you -24. You put the numbers together which makes (-12,-24).

I hope this helps you out  stay safe.

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:$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:

1, 4, 5

Step-by-step explanation:

a rational number is defined as a number that can be written as a fraction. so, 4 and 5 are automatically checked off. 1 also simplifies to plus or minus 11, which is a whole number, meaning it is automatically rational. 2 is not rational because there is no set pattern in the decimal, so it can not be written as a fraction. 3 is the same thing, so it is irrational.

Answer: It is between 3 and 4.

Step-by-step explanation:

Integers are whole numbers and its opposite, for example,  -5,-4,-3,-2,-1, 0, 1,2,3,4, 5 ,....

Meaning that 3.4 is not an integer so it fall between two integers and those integers has to be positive because 3.4 is a positive number.  

3.4 is slightly greater than 3  but is less than 4.

Meaning that 3.4 is between the integers 3 and 4.

Answer:

y=-0.5462

Step-by-step explanation:

2.33/y=1.4/(-1.1)

1.4/(-1.1)=-1.272727 (this number is rounded so answers may vary a little)

2.33y=-1.272727

y=-1.272727/2.33

y=-0.5462

Please check my work and I really hope this helps :)

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.

Step-by-step explanation:

just do 3*- 3y and then the answer you get you do 3*8