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Reika [66]
3 years ago
7

Which of the following is a solution for the equation 7x+ 21 = 105? 105 15 84 12

Mathematics
2 answers:
lisov135 [29]3 years ago
7 0
The correct answer is 12
bazaltina [42]3 years ago
3 0

Answer:

12

Step-by-step explanation:

7x +21 =105

7x =105 - 21

7x =84

x=84 :7

x=12

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Line l is parallel to line m. The slope of line l is . What is the slope of line m? 4/9
babunello [35]
4/9m=slope
it has no y intercept so it passes through the origin
4/9m=same slope
4/9+1= a parallel line to this
5 0
3 years ago
A dealer earns a profit of 8$ per bag of white cement and a loss of 5$ per bag of grey cement.
Natali [406]

Answer :-

  1. loss = <em> </em><em>100</em><em>0</em><em>$</em><em> </em>
  2. 4000

Step by step explanation :-

1#

Profit on 3000 bags of white cement sold = 3000 × 8 = 24000

loss on 5000 bags of grey cement sold = 5000 × 5 = 25000

<u>Alternatively</u><u>:</u><u> </u>

  • Net loss = ( 25000 - 24000 ) = 1000$
  • profit/ loss = $ [3000 × 8 - 5000 × 5 ]
  • $ [24000 - 25000]
  • -1000$

<em>As</em><em> </em><em>the</em><em> </em><em>result</em><em> </em><em>of</em><em> </em><em>transaction</em><em> </em><em>is</em><em> </em><em>negative</em><em>/</em><em> </em><em>loss</em><em> </em>

  • Loss = 1000$

2#

  • Loss on the scale of 6400 grey bags = 6400 × 5 = 32,000

<em>In</em><em> </em><em>order</em><em> </em><em>to</em><em> </em><em>have</em><em> </em><em>no</em><em> </em><em>profit</em><em>, </em><em> </em><em>profit from the </em><em>Cello </em><em>white cement should be 32</em><em>0</em><em>0</em><em>0</em><em>.</em><em> </em>

  • Number of white cement bags to be sold = 32000 / 8 = 4000

<em>4000 why cement bags and 6400</em><em> </em><em>grey</em><em> </em><em>cement</em><em> </em><em> </em><em>bags</em><em> </em><em>are sold in order to have no profit and </em><em>n</em><em>o</em><em> </em><em>loss </em>

<em>Hope</em><em> </em><em>it</em><em> </em><em>helps</em><em> </em><em>~</em>

5 0
2 years ago
1 x 1 x 99 x 100 hat is the awnser
sashaice [31]
The answer to this equation is 9,900. Why? Well, we can solve this equation in left-to-right format, seeing that there are no brackets, exponents, or parenthesis:

Step One: 1 x 1 = 1. Anything multiplied by one is the same number that was started with.

Step Two: 1 x 99 = 99. Again, anything multiplied by one is the same number that we started with, which in this case was 99.

Step Three: 99 x 100 = 9,900. Because 100 is a power of ten, we could easily find the solution by shifting the digits two places to the left to increase their value. However, if you would like to do it the long way, you could simply write out 100 x 99 and solve it.

Your final answer: 1 x 1 x 99 x 100 = 9,900.
5 0
2 years ago
Add (2a + 8) + (4b + 5). Simplify<br> your answer.
deff fn [24]

Answer:

2a+4b+13

just add the numbers that dont have a letter, and keep the letter numbers intact, and there is the answer...

5 0
3 years ago
Read 2 more answers
If you don’t know how to solve this equation, please skip my question and answer someone else’s question(s). Using either slope-
Vsevolod [243]

Answer:

You were close; you don’t have to add 3x to the right side though.

We’re given 2y= -3x + 6

Step one: divide both sides by 2

y= (-3/2)x + 3

5 0
3 years ago
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