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
castortr0y [4]
3 years ago
9

Can soembody help me answer this please. PLEASE BE QUICK AND RIGHT !!!​

Mathematics
2 answers:
Dafna1 [17]3 years ago
8 0

Answer:

Statement 1

Statement 4

Statement 7

Step-by-step explanation:

(1) 7x + 4

(2) 3x + 5 + 4x - 1 = 7x + 4

The two are identical hence equivalent for all x

myrzilka [38]3 years ago
4 0

Answer:

A, D, and G

Step-by-step explanation:

Let's try each of the answer choices, one by one.

A) Plug x = 2 into each expression and see what we get.

7x + 4 = 7 * 2 + 4 = 14 + 4 = 18

3x + 5 + 4x - 1 = 3 * 2 + 5 + 4 * 2 - 1 = 6 + 5 + 8 - 1 = 18

Since they're both 18 when x = 2, A is true.

B) The statement says that the expressions are <em>only </em>equal for x = 4 and x = 8, but as we saw from A, they're also equal when x = 2, so B is wrong.

C) Let's try to find a counterexample for this by plugging in an odd number into each expression, like 1:

7x + 4 = 7 * 1 + 4 = 7 + 4 = 11

3x + 5 + 4x - 1 = 3 * 1 + 5 + 4 * 1 - 1 = 3 + 5 + 4 - 1 = 11

We see that these two expressions are equivalent when x = 1, which is an odd number, so this contradicts the statement that they're <em>only</em> equal when x is even. C is wrong.

D) Let's combine like terms for the expression 3x + 5 + 4x - 1:

3x + 4x + 5 - 1 = 7x + 4

Notice that this is the exact same expression as the first one, which is 7x + 4 so that means for any x, these two expressions will always be the same. D is thus true.

E) This is not true because it's possible that two expressions aren't equivalent but have the same value for a certain odd number and a certain even number. E is incorrect.

F) Obviously, if the two expressions are equivalent, they will give the same answer for any input of x, including when x = 0, so F is wrong.

G) Again, the two expressions will always be equal, including when x = 8, so this statement is true.

The answers are A, D, and G.

Hope this helps!

You might be interested in
Multiply the polynomials (x+2)(2x^2+9x+8)
solong [7]
When you combine like terms you would get
2x^3+13x^2+26x+16
Have a great day!!!
5 0
2 years ago
Read 2 more answers
What is the measure of both opposite interior angles ?
Vitek1552 [10]

Answer:

B= 70, C= 50

Step-by-step explanation:

120=15x+5+22x+4

120=37x+9

111=37x

X=3

C: 15×3+5=50

B: 22×3 +4= 70

7 0
3 years ago
Which of the following controls what enters or exits a cell?
zzz [600]

Answer:

The cell membrane

Step-by-step explanation:

The function of the cell membrane is to regulate what forgien substances come in and out of the cell.

7 0
2 years ago
Two groups of students were asked how far they lived from their school. The table below shows the distances in miles:
pychu [463]

Answer:

C. The value for Group A is double the value for Group B

Step-by-step explanation:

First, you add all the numbers from each group.

A: The distance in total is 39.06

B: The distance in total is 19.53

To find the mean, which is another way of saying the average, you divide the sum with how many numbers there are. (hope this makes sense, I suck at wording)

A: There are 9 numbers in total, hence, 39.06/9 = 4.34

B: There are 9 numbers in total, hence, 19.53/9 = 2.17

Those are the mean distance for the two groups.

2.17 * 2 = 4.34

Hence, C (third statement)

3 0
2 years ago
Read 2 more answers
Properties of multiplication 50b=10<br>what is the answer?
poizon [28]
B is equal to 1/5. Hope I was able to help

8 0
3 years ago
Other questions:
  • Help me please ? !!!!!!!!!!!!!!
    10·2 answers
  • In a math class, 1/3 of the students fail a test,  if twelve students have failed the test, how many students are in the class?
    13·1 answer
  • Suppose you bought a 6 percent coupon bond one year ago for $920. The bond sells for $940 today.
    6·1 answer
  • J
    6·1 answer
  • Which of the following values is farthest to the left on the number line? (0.1)2 0.02
    8·2 answers
  • How could you increase the mass of a wooden block?
    6·1 answer
  • If anyone knows can u plz help
    10·1 answer
  • 8. The local radio station surveyed listeners and asked about their favorite type of music. The results showed
    7·2 answers
  • If (-1,0) belong to the function f where f(x) =M X +2, then M= <br><br>Pls answer ​
    7·1 answer
  • A dice is thrown once find the probability of getting an odd number​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!