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weeeeeb [17]
3 years ago
10

Statement 4x = 7x - 21 Reason ?

Mathematics
2 answers:
denpristay [2]3 years ago
4 0

Answer:

solution;

21=7x-4x

21=3x

21x/3x

Then finalay aneswer is 7x

bagirrra123 [75]3 years ago
3 0
4x = 7x -21
4x - 7x = -21
-3x = -21
X = 7

Check your work for your reason
4(7) = 7 (7) -21
28 = 49-21
28 = 28
They equal
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At the close of the day at a food stand, the following items remained: 7 hot dogs, 4 coney dogs, 3 bags of chips, 6 bags of pean
nalin [4]

Answer:

ratio=\frac{4}{7}

Step-by-step explanation:

Let

x ----> the number of coney dogs remained

y ----> the number of hot dogs remained

we have

x=4,y=7

we know that

To find our the ratio of coney dogs to hot dogs, divide the number of coney dogs by the number of hot dogs

so

ratio=\frac{x}{y}

substitute the given values

ratio=\frac{4}{7}

7 0
3 years ago
what is the standard deviation and variance of 10, 10, 10, 10, 13, 20, 23, 32, 32, 32, 32, 47, 50, 53, 60, 60, 63, 72, 72, 72, 7
Archy [21]

Answer:

bro/sis through this solution u can solve ur values

Step-by-step explanation:

To calculate the variance, you first subtract the mean from each number and then square the results to find the squared differences. You then find the average of those squared differences. The result is the variance. The standard deviation is a measure of how spread out the numbers in a distribution are.

I hope this will help you

4 0
3 years ago
Hello everyone can you answer this for me? What is A in the equation attached? Please and thank you.
lapo4ka [179]

Answer:

a = 6

Step-by-step explanation:

Hello!

Solve:

  • 4(3a - 4) = 56
  • 3a - 4 = 14          (factoring out 4)
  • 3a = 18               (adding 4 to both sides)
  • a = 6                   (dividing by 3)

Another way:

  • 4(3a - 4) = 56
  • 12a - 16 = 56        (distributive property)
  • 12a = 72               (moving like terms)
  • a = 6                    (dividing by 12)

Distributive Property of Multiplication:

The process of distributing the outside factor to the terms in the parenthesis.

Example:

4(3a - 4)\\\\4(3a) - 4(4)\\\\12a - 16

7 0
3 years ago
Read 2 more answers
The function f(x) = x] is graphed over the interval [-6, 3]. Which translation of the graph has the domain (-3, 6]? 0 A. g(x) =
bezimeni [28]

An interval graph in graphical theory is indeed an undirected graph formed by an interval set just on true line, with a top for every interval as well as an edge between vertex v to intersections. Graph intervals and these graphs are chordal graphs and graphs that are perfect, and the further discussion can be defined as follows:

Given:

\bold{function\ f(x) = |x|}

\bold{Interval \ \[-6, 3\]}

To find:

Domain=?

Solution:

The \bold{function\ f(x) = |x|} is a graphic over the[-6,3] interval.

A<em><u> graph of the domain</u></em> [-3,6 ] is indicated mostly by the <em><u>transformation </u></em>that <em><u>horizontal shifts</u></em> to combat (h(x)=f(x-3)).

\to \bold{h(x) =f(x-3)}

            =|x-3|

Therefore, the final answer is "Option (D)".

  • Please find the complete question and a rule in the attachment file.

Learn more:

brainly.com/question/24161708

8 0
3 years ago
Carlos buys a game for $7.89 and some batteries for $5.49. He pays with a $20 bill. What is the best estimate of how much change
Molodets [167]

Given:

Carlos buys a game for $7.89 and some batteries for $5.49. He pays with a $20 bill.

To find:

The best estimate of the amount of change he should get.

Solution:

First we need to approximate the data values.

\$7.89\approx \$8.00

\$5.49\approx \$5.50

Now, the total cost of game and batteries is

\$8.00+\$5.50=\$13.50

He pays with a $20 bill.

Change=\$20-\$13.50

Change=\$6.50

Therefore, the estimated amount of change is $6.50.

3 0
3 years ago
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