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
goblinko [34]
4 years ago
6

Explain why the expression 7•3x is not equal to the expression 21x

Mathematics
1 answer:
Firdavs [7]4 years ago
5 0
Working out the expression 7(3ˣ) is first to calculate the value of 3ˣ then multiply the answer to 7.

For example, let x = 2
Then 7(3ˣ) = 7(3²) = 7 × 9 = 63

With the same value of x = 2, calculating 21ˣ = 21² = 441, which isn't the same answer with the expression 7(3ˣ)
You might be interested in
The teenagers of a school sold 430 tickets for their Christmas program. The girls sold 15% more tickets than the boys sold. How
Paul [167]
The girls sold 230
The boys sold 200
8 0
3 years ago
What is the mean of 65,30,25
mixas84 [53]
You've got 3 values there.

Get the sum of 65, 30 and 25 and divide their sum by the number of values that exist, which in this case is 3.

\frac { 65+30+25 }{ 3 } =\frac { 120 }{ 3 } =40

Answer:

40
5 0
3 years ago
Read 2 more answers
Russell has been training for the Emerald Valley Race. The first week he trained, he ran 5 days and took the same two routes eac
Ivahew [28]

In maths, Distance is described as the quantity of space between two points, and further calculation can be defined as follows:

Given Expression:

5x + 2 = 30\\\\2(x + 5) = 30\\\\5(x + 2) = 30\\\\2x + 5 = 30

To find:

distance=?

Solution:

5\ days\ \begin{cases} & \text{ if } \text{before school 2 miles}    \\  & \text{ if } \text{after school x miles} \end{cases}

\therefore 5(x+2)=30\\\\

\bold{5(x+2)=30}\\\\\bold{5x+10=30}\\\\\bold{5x=30-10}\\\\\bold{5x=20}\\\\

\bold{x=\frac{20}{4} }\\\\\bold{x=4}

Therefore, the final answer is "4 miles".

Learn more:

brainly.com/question/12186030

8 0
3 years ago
Read 2 more answers
Which statement is true about the x-intercepts?
N76 [4]

Answer:

The x-intercept is found by setting y = 0, because that will give us the x-value at which the line crosses the x-axis

Step-by-step explanation:

3 0
2 years ago
Hey guys it's been a while can you just help me with these two problems?​
lutik1710 [3]

Answer:

Your already right on both of them lol

Step-by-step explanation:

Pls brainliest thx! :D

7 0
3 years ago
Read 2 more answers
Other questions:
  • If Gabby has 15 cosmetics in a bag, and 5 of those cosmetics are eyeshadow, then what is the probability of her picking an eyesh
    10·2 answers
  • 6. You've just received an order of silk flower arrangements from your wholesaler. You paid $20.00 each for them. Your store use
    12·1 answer
  • Pleaseeee help!!!! I will mark you as brainlinest for correct answer!!!!!!!!
    11·1 answer
  • In quadrilateral PQRS, the coordinates are P(o, o), Q(a+c, o), R(2a+c,
    6·1 answer
  • Ok i dont get this helpp!!!
    13·1 answer
  • Please help me .<br> factor. <br> X^2+10x-75
    7·2 answers
  • Several students were asked how many blocks they walk from home to school each day. The results are shown in the line plot. How
    15·1 answer
  • GIVING BRAINLIEST IN A HURRY
    13·1 answer
  • Please answer..............
    7·2 answers
  • Which of the lines below is a line of symmetry?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!