1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
netineya [11]
3 years ago
10

7xy + 8z - 2z + 12xy + 10z

Mathematics
1 answer:
cestrela7 [59]3 years ago
7 0

Answer:

19xy + 16z

Step-by-step explanation:

combine like terms

7xy +1 2xy= 19xy

8z - 2z + 10z = 16z

You might be interested in
A car travels 150km on 12 L of gasonline. How many liters are there of gasoline needed to travel 500km
coldgirl [10]
150 = 12
150 +150 = 300 which = 24
150 + 150 + 150 = 450 which =36



the remaining 50 is 12 ÷ 3, so 4. 36 + 4 = 40.

therefore, 40 L of gasoline are needed to go 500km
4 0
3 years ago
Will mark brainiest
vagabundo [1.1K]

Answer:

the right answer is d.

just use CAST relation

8 0
3 years ago
Read 2 more answers
Answer the following true or false. Justify your answer.
Anna007 [38]

Answer:

a) False b) False c) True d) True e) True

Step-by-step explanation:

a) If A is a subset of B, and x∈B, then x∈A. False

Suppose A is Z (Set of Integers), and B is R (Set of Real Numbers). Then A is a subset of B. x ∈ B, let's say x equals π. If x ∈ B (B = Real Numbers) and x=π then x ∉ A (Z).

We could call A, any other subset of Real numbers (Q, I,..) and we both would come up to the same conclusion when it comes to Real numbers the Set.

So this conclusion is False. Not always an element of a subset is an element of a set.

b) False

For this one, I've drawn some lines, and it is useful to work with them.

Given the set {(x,y) ∈ R²| 0<x<0} then all negative and positive numbers but zero belong to this set.

c) If A and B are square matrices, then AB is also square. True

Taking into account the rules for multiplying matrices. The number of columns of A must be the same number of lines of B to there can be a matrix product.

Whenever we multiply square matrices, we'll always get square matrices. Then this conclusion is true.

d) A and B are subsets of a set S, then A∩B and A∪B are also subsets of S. True

Suppose A= Z (Integer Numbers) and B=Q (Rational Numbers) and S= R (Real Numbers)

A∩B = Z∩Q=∅ and A∪B =Z∪Q = subset

Since the ∅ empty set ⊂ in every set and ZUQ is another Subset of R this is a True conclusion.

e) True. For a matrix A, we define A²= AA

For any Power of Matrices, all we have to do is multiply any given matrix by itself for a given number of times.

M²=M*M

M³=M*M*M

7 0
3 years ago
Help please..<br><br> find the area of the region that lies inside both curves
just olya [345]
Too hard for me. I'm only in 5th grade
7 0
3 years ago
If you go out to eat with 3 friends and your meal was $72.50, what should you leave for gratuninty if you want to tip your waite
kvv77 [185]

Answer:

$10.88 or round up to $11

Step-by-step explanation:

Since 15 is expressed as a percent, you can convert it to a decimal.

.15, which can also be 15/100 if you were to write it as a fraction.

You are trying to find 15% of 72.50 so you would need to multiply your new decimal (.15) to your meal total. This will give you 10.875 or 10.88.

5 0
3 years ago
Other questions:
  • Drag each expression to show whether it is equivalent to 54x + 18, 18(3x – 1), or (6 • 9x) + (6 • 1).
    8·1 answer
  • A school earns $70 from selling 50 raffle tickets. Each ticket costs the same price. How much does the school earn for 1 ticket?
    6·2 answers
  • find two numbers such that the sum of twice the first and thrice the second is 92 ,and four times the first exceeds seven times
    8·1 answer
  • What is the vertical change from Point A to Point B? What is the horizontal change from Point A to Point B? What is the rate of
    15·2 answers
  • Given sets A and B, prove that the following two conditions are equivalent: (1) A \ B = B \ A, (2) A = B.
    13·1 answer
  • A real estate agent used the mean and MAD to argue that the home prices of Cinnamon Court were lower and more variable than thos
    11·2 answers
  • Kia is tiling a floor. The floor is a square with sides length 12 feet. Kia wants the tiles the tiles to be a squares with side
    13·1 answer
  • What is the slope of the equation f(x)=3x+4 A.3 B.4
    15·2 answers
  • If m X=49, y=41<br> X=90, y=41<br> X=41, y=49
    11·1 answer
  • Triangle IJK is similar to triangle LMN. Find the measure of side LM. Round your answer to the nearest tenth if necessary.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!