What is x x − 7 = 13

what? there are no images, i have no idea what you are saying

Answer:

A perfect square means that all side are EXACTLY equal. I hope this helps!

Step-by-step explanation:

In number theory, a perfect number is a positive integer that is equal to the sum of its positive divisors, excluding the number itself. For instance, 6 has divisors 1, 2 and 3, and 1 + 2 + 3 = 6, so 6 is a perfect number

Answer:

1

Step-by-step explanation:

a+1=1

a=1-1

a=0

b^a which means:

b^0

whenever power is 0 answer is always one

so value of b^a is 1

Answer:

17

Step-by-step explanation:

if you subtract 4 from 89, which is the shipping cost. 89 - 4 = 85. Then divided 85 by 5 because that will show how much he paid for them in total, by how much a singular book is. Telling you how many books he bought. 85/5 = 17.

Answer:

A.) 5b+4=89

B.) 17 books

Step-by-step explanation:

To find A.), we must create a linear equation. Let b be the number of books Sam ordered. We write 5b because each book is 5 dollars. Then we add 4 dollars to the equation to represent the shipping fee. Then we write "equals to 89",  because it says that is the total cost. So we get the equation 5b+$4=$89

To find B.), we must solve the equation. Isolate the variable, by subtracting 4 from both sides. We then get 5b=$85. Now we divide by 5 to get only the variable and to get rid of the coefficient. We get b=17. So Sam bought 17 books.

Answer:

x = -y

or

-y = x

Step-by-step explanation:

since you reflect it over the x axis, the y changes to a negative

Answer:

its A on edgy

Step-by-step explanation:

Answer:

( 8 x + y )  ( 8 x − y )

Step-by-step explanation:

Answer:

X = 64/19

y equals -2/19

z =9/19

Step-by-step explanation:

its very hard to type in the explanation but I know the answer is right trust me I do a level maths

Answer:

2

Step-by-step explanation:

Answer:

It is 2

Step-by-step explanation:

I do not have a true explanation its just quick math to my brain.

Answer:

15a is 32oz   18c is 10

Step-by-step explanation:

Answer:

Greater

Step-by-step explanation:

Answer:

i think it is 8

Step-by-step explanation:

but i am not sure

Answer:

y= 45x + 60 if you are just doing the hotel cost. y= 45x + 235 package one and y= 45x + 310 package two if you are including the cost of the travel packages.

Answer:

So the slope is -2 while the y-intercept is -2

Step-by-step explanation:

y=mx+b

so you need to rearrange it so it will be

y=-2x-2

So m is slope so it is -2

and -2 is b which is the y-intercept so it is -2

Hope this helps and sorry I took so long

Answer:

79.875, or 79.88

Step-by-step explanation:

first ya do 75*0.065=4.875

then you add that to 75

Answer:

-0.4

Step-by-step explanation:

Answer:

-0.4

Step-by-step explanation:

you just need to devide 2 and 5 or you can multiply the whole thing by 2x so it's 4/10 and than devide if you find it easier

Answer:

13 and 6

Step-by-step explanation:

Answer:

a=c

Step-by-step explanation:

This is because of the transitive property; which states that if a=b and b=c, then a=c.

Answer:

x > -10

x < 3

Step-by-step explanation:

separate into two inequalities

x+7> -3      

x+7<10

x + 7 -7> -3  + -7

    x > - 10

x + 7 -7 < 10 + -7

     x < 3

Answer:

y = -2x + 1

Step-by-step explanation:

The y-intercept is given by the point that is on the y-axis. (1)

This means that the answer contains a +1

Then you must find  if the slope is positive or negative

In this case the slope is negative because the line goes "downhill" from left to right

Since the slope is negative it means that there will be a negative sign in the beginning of the equation

Next, to find the slope you need to find the rise over run

Since it is a negative slope the rise will be negative and the run will be positive.

To find the slope find two clear points on the graph such as (0,1) and (2,0)

To find the slope, use the slope formula

This would look like: (0-2)/(1-0)

Your slope will be -2x

Piece it all together and you get a final answer of y= -2x+1

Answer:

I don't know exactly, I think it is EO, but I could be wrong.

Step-by-step explanation:

The side with intermediate length is OE .

Relationship of sides to interior angles in a triangle

In any triangle:

According to the question

Side opposite to smallest ∠20° = OD

Side opposite to largest ∠110° = DE

Side opposite to intermediate ∠50° = OE

Now,

according to the relationship between length of side of triangle and their interior angle

The smallest side is opposite the smallest angle, and the longest is opposite the largest angle, then it follows that since a triangle only has three sides, the midsize side is opposite the midsize angle.

Therefore,

OD = smallest side

DE = Largest side

OE = intermediate side

Hence, The side with intermediate length is OE .

To know more about the relationship between length of side of triangle and their interior angle here:

https://brainly.com/question/24083446

#SPJ2

Answer:

A

Step-by-step explanation:

Its A!!!

Since it says the scale is 100 km for each cm, and the cities are 2.9 cm away on the map you just multiply that by 100 to get 29 km! Hope this helps!

Answer:

She bought 2.5 pounds

Answer:

2.5 lb

Step-by-step explanation:

If Sarah has not made any loss or profit then amount of coffee = total cost/cost per pound 28.75/11.5= 2.5

Answer:

They intercept at (-4.5, -11.5)

Step-by-step explanation:

I think it's a

Step-by-step explanation:

it's been a while since I done this kind of work