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katrin2010 [14]
2 years ago
11

Answer pleaseeee??? Thanks

Mathematics
2 answers:
inessss [21]2 years ago
5 0

Answer:

True!

Step-by-step explanation:

3(10) - 9

30 - 9

21

algol132 years ago
3 0

Answer: false becuase you would add 9 to both sides simply 3x=19 then 19/3 then if u want to check it just plug 19/3 in the equation then cancel 3 simply 19-9.

Step-by-step explanation: i'm not so sure but hope it helps .

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1. -3 2/5 + b = 8 1/5<br><br><br>2. -7/3 n = -42<br><br>PLZ HELP ASAP I WILL MARK BRAINLIEST
diamong [38]
1. Convert the mixed numbers into improper numbers (-3 2/5 = -17/5 and 8 1/5 = 41/5). Then add 17/5 to both sides when means b=58/5

2. Multiply both sides by the reciprocal of -7/3 (which is -3/7). So n=18
7 0
2 years ago
Solve. Write the solution in interval notation. -2x&gt;-8 and -5x&lt;20.
Novosadov [1.4K]

Answer:

The interval notation of the solution is (-4 , 4)

Step-by-step explanation:

* Let us explain a very important point in solving inequality

- When you multiply or divide an inequality by negative number we

   must reverse the symbol of the inequality

- Ex:

∵ 2 < 3

- If we multiply the both sides of the inequality by -1, then the

  inequality will be -2 < -3 and this is completely wrong, so we must

  reverse the symbol of the inequality

∴ -2 > -3

* Now let us solve the problem

∵ -2x > -8

- Divide both sides by -2 and remember to reverse the symbol of the

  inequality

∴ x < 4

∵ -5x < 20

- Divide both sides by -5 and remember to reverse the symbol of the

  inequality

∴ x > -4

- From both solutions

∴ -4 < x < 4

∴ The solution is {x : -4 < x < 4}

- Interval notation is a way of writing the solutions of inequalities

 ( , ) if x does not equal the end numbers

 [ , ] if x equals the end numbers

 [ , ) , ( , ] if x equals one of the two end numbers

* The interval notation of the solution is (-4 , 4)

4 0
3 years ago
Divide 14 by v. Then, subtract 7.
Nastasia [14]

Answer:

14-7v

--------

  v

Step-by-step explanation:

i dont understand what else the answer could be, due to the fact that not enough information if provided to result in a solid sum.

3 0
3 years ago
The value of a house decreases at a steady rate of 20% each year. What is the total percentage loss (to the nearest integer) in
Westkost [7]

Answer: The total percentage loss would be 67%.

Step-by-step explanation:

Since we have given that

Rate of decline each year = 20%

Number of years = 5

We need to find the total percentage loss in value of the house at the end of 5 years.

So, Total percentage loss would be

1-(1-\dfrac{r}{100})^5\\\\=1-(1-\dfrac{20}{100})^5\\\\=1-(\dfrac{4}{5})^5\\\\=1-(0.8)^5\\\\=0.67\\\\\approx 67%

Hence, the total percentage loss would be 67%.

8 0
2 years ago
What coordinates best represent the location of point K on the coordinate plane.
Sindrei [870]

Answer:

-7, -4

Step-by-step explanation:

The squares are marked by units of 2. It looks like you did not take that into account when you entered your y coordinate.

8 0
3 years ago
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