MATHEMATICS
MIDDLE SCHOOL

Answer:

Answer:

Step-by-step explanation:

-7z/2 - 2 + z -3

=-5 - 5z/2

HIGH SCHOOL

Ava has 20-foot length of wire.She cuts the wire into 6 pieces of equal length.The length of each piece of wire will fall between which two whole-number lengths?

Answer:

3-foot lengh

Step-by-step explanation:

20/6=3.333

round this number and get 3-foot lengh

HIGH SCHOOL

Santa has lots of mixed up socks in his sack! If he has 6 green socks, 4 gold socks, 8 black socks and 2 red socks, what is the minimum he needs to pull out of his sack to get a matching pair?

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

Based on the problem above, the minimum he needs to pull out of his sack to get a matching pair is 5

Based on the problem above, the minimum he needs to pull out of his sack to get a matching pair is 5

MIDDLE SCHOOL

What is the solution of the following system? -2x-y=1

-4x-2y=-1

A. infinitely many solutions

B. no solutions

C. (3,8)

D.(-3,-8)

Answer: The correct option is

(B) no solution.

Step-by-step explanation: We are given to find the solution of the following system of equations :

From equation (i), we have

Substituting the value of y from equation (iii) in equation (ii), we get

which can never be possible.

Thus, the given system of equations have no solution.

Option (B) is CORRECT.

B

when we multiply the equation and subtract equatio 2 from equation 1 the result is 0=-4 and 0=2

HIGH SCHOOL

Simplify: 3x2+4(2y+x2)3x2+4(2y+x2)

3x2+4(2y+x2)

3x2+8y+4x2

7x^2+8y

3x2+8y+4x2

7x^2+8y

Answer:

7x^2 + 8y is the correct answer Hope this helps!

MIDDLE SCHOOL

G over 2+23 when g = 6 is what

Answer:

6 over 25

Step-by-step explanation:

this can't be simplified, but you pretty much just put 6 over 2 + 23 and then add it together.

Answer:

0.23

Step-by-step explanation:

6/26

divide 6 by 26

0.230 or 0.230769231

MIDDLE SCHOOL

what is an equation of the line that passes through the point(-2,1) and is parallel to the line whose equation is 4x-2y=8?

Answer:

Step-by-step explanation:

ANS:

y = 2x − 5 y = mx + b

−1 = 2(2) + b

−5 = b

HIGH SCHOOL

The Pyraminx is a Rubik's cube-type toy in the shape of a tetrahedron. The Pyraminx shown below has edges 15\,\text{cm}15cm long and vertical height h=12.2\,\text{cm}h=12.2cm. The triangle drawn with dashed lines is a right triangle. What is the distance rr?

Answer:

8.727

Step-by-step explanation:

Since the below edge, d = 15 cm, and the height, h = 12.2 cm, we will use the Pythagorean theorem to find the distance r.

COLLEGE

With a short time remaining in the day, a delivery driver has time to make deliveries at 7 locations among the 9 locations remaining. How many different routes are possible?

Answer:

The different possible routes are :

181440

Step-by-step explanation:We are asked to find the number of different routes that are possible to choose 7 locations among the 9 locations remaining.

This means that we have to chose the locations and also we have to arrange them in different orders according to the different order of locations.

The method we have to use is a method of permutation.

When we have to chose and arrange r items out of a total of n items then the formula is given by:

Here we have: n=9

and r=7

Hence, the different possible routes are:

Hence, the answer is:

181440

MIDDLE SCHOOL

What is the answer to this

24.3+8+10.5

42.8 is the correct answer

Answer:

42.8

Step-by-step explanation:

First, add the whole numbers.

24 + 8 + 10 = 42

Then,add the decimals.

0.3 + 0.5 = 0.8

Finally, combine the decimals and whole numbers.

42 + 0.8 = 42.8

So, the answer is 42.8