Factor completely:
x^2-x^2-3.5(x+y)

Answer:

Step-by-step explanation:

1. 10^2+7^2=x^2

x=sqrt(149)

2. 21^2-19^2=x^2

x=sqrt(80)

3. This is all pythagorean theorem busywork, a^2+b^2=c^2 where c is the hypotenuse of the triangle.  I think from my examples you should be able to figure the rest out.

Answer:

1,060

Step-by-step explanation:

Each- Means multiplication.

You can add 212 - 5 times

212x5

Answer:

1060

Step-by-step explanation:

212 x 5 = 1060

212

x5

5x200=1000

5x10=50

5x2=10

1000+50+10=1060

Answer:

About 4 hours. When you add the numbers together, you get

2 1/8 + 2 1/4 = 35/8 = 4 3/8 = 4.375

Step-by-step explanation:

Since the answer is not greater than 4.5, you round down to 4. If the answer was greater than 4.5, you would have rounded up to 5.

Answer:

The answer is C

Number of days= 21/8

Step-by-step explanation:

The inequality to represent the given situation is [tex]2\frac{1}{2}+1\frac{1}{3} \le6[/tex]. Therefore, option B is the correct answer.

Inequalities are the mathematical expressions in which both sides are not equal. In inequality, unlike in equations, we compare two values. The equal sign in between is replaced by less than (or less than or equal to), greater than (or greater than or equal to), or not equal to sign.

Given that, Joseph runs [tex]2\frac{1}{2}[/tex] miles on Monday. Each day after that, he runs the same [tex]1\frac{1}{3}[/tex] mile route every morning.

Let the number of days be x.

Here, the inequality is

[tex]2\frac{1}{2}+1\frac{1}{3} \le6[/tex]

Therefore, option B is the correct answer.

To learn more about the inequalities visit:

https://brainly.com/question/20383699.

#SPJ2

Step-by-step explanation:

4x-7y= -8

or, 4x= 7y-8

or, x = 7y-8 ...........(i)

4

3x+ 2y =-6

or, 3x= -(2y+6)

or, x= -(2y+6) ........... (ii)

3

from (i) and (ii),

7y-8 = -(2y+6)

4 3

or, 21y-24 = -8y-24

or,

y =

then , Let's put the value of y in (i) or (ii)

x =

sorry I'm tired

so, i can't complete this

Answer:

Thanks ! :)

Step-by-step explanation:

Answer:

Uselesas fact!

Step-by-step explanation:

cotton candy was created by a dentist

Step-by-step explanation:

y=x+1

Answer:

0.3

Step-by-step explanation:

3/10

3x10^-1

Answer:

I am sorry I really don't know I will try to help if I get it sorry :((

Step-by-step explanation:

Answer:

quadratic

Step-by-step explanation:

because there is a consistent change within the change

srry it sounds confusing but trust me haha

Answer:

A bank with a simple interest savings plan will automatically transfer money from your paycheck to your savings account, letting you save without any extra effort.

Answer:

A.) i think it's (-2, -1)

B.) ?

Step-by-step explanation:

I am very sorry if they are wrong....i don't know B..sorry

Answer:

b = (-1,0) (-3,0)

Step-by-step explanation:

Answer:

15

Step-by-step explanation:

Dont need an explanation really, but if there are 5 rows, with 3 each in them, all you need to do is 3x5.

15.

Answer:

After 7 weeks, Mia's office will have recycled 21 pounds.

Step-by-step explanation:

With the information provided, you can use a rule of three to find the pounds of paper that Mia's office will have recycled after 7 weeks given that they recycled 9 pounds over 3 weeks.

3 weeks  →  9 pounds

7 weeks  →         x

x=(7*9)/3

x=21

According this, the answer is that after 7 weeks, Mia's office will have recycled 21 pounds.

Answer:

8. Not a function, the first three are of the same pattern but not the last two

9. Not a function, each input should have only 1 output or two inputs could have one output.

Answer:

2.9184

Step-by-step explanation:

i hope this is correct i think it is..

c:

Answer:

y = -3x + 19

Step-by-step explanation:

Answer: $2,000

Step-by-step explanation:

Gas is $3.25 per gallon. If Monica needs 12 gallons, cost would be:

= 12 * 3.25

= $39

If she wants to fill up for less than $35, she will have to earn the difference in points:

= 39 - 35

= $4

One can get $0.10 off for every $50 spent. The number of 10 cents in $4 is:

= 4 / 0.1

= 40

Monica would therefore have to spend:

= 50 * 40

= $2,000

Answer:

Figure it out yourself loser

Step-by-step explanation:

Answer:

2.5

Step-by-step explanation:

Conversion a mixed number 2 1/

2

to a improper fraction: 2 1/2 = 2 1/

2

= 2 · 2 + 1/

2

= 4 + 1/

2

= 5/

2

To find new numerator:

a) Multiply the whole number 2 by the denominator 2. Whole number 2 equally 2 * 2/

2

= 4/

2

b) Add the answer from previous step 4 to the numerator 1. New numerator is 4 + 1 = 5

c) Write a previous answer (new numerator 5) over the denominator 2.

Two and one half is five halfs

Answer:

The answer is the first one 2.5

Step-by-step explanation:

=8 + 1/8 / 2.5 + 3/4

= 64+1/ 10+3/4

=65/8/ 13/4

=65/8 * 4/13

=65/ 2 * 13

=65/26

=2.5

8 + 1/8 / 2.5 + 3/4 = 2.5

Answer:

1. 5%

2. 37.5% decrease

Answer:

the opposite of a positive number is always negative

Answer:Pierre has $17 left

Step-by-step explanation:

Amount of money before dues = $42

according to the expression 42-d, d represents dues= $25

Amount left = Amount of money before dues - Amount of dues

                  = $42- $25

                  =$17

Pierre has $17 left after he spent $25 on dues.

Answer:

The image is black

Step-by-step explanation:

Comment on this answer and edit the image. I will then tell you what the answer is.