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2 years ago

Rearrange the equation so m is the independent variable. -2m-5n=7m-3n

Mathematics

2 answers:

seropon [69]2 years ago

6 0

Answer:

-2m -5n = 7m - 3n

<=> -5n + 3n = 7m + 2m

<=> -2n = 9m

<=> m = $\frac{-2}{9}n$

Step-by-step explanation:

marusya05 [52]2 years ago

3 0

Answer:

n = -9/2m

Step-by-step explanation:

I got this answer from Khan Academy.

Hope this helps! :)

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The Jayden family eats at a restaurant that is having a 15% discount promotion. Their meal costs $78.96, and and they leave a 20

Karolina [17]

Multiply the cost by 1.2 (120%) to add 20% tip, and then multiply by 0.85 (85%) to take off 15%

78.96 x 1.2 x 0.85 = 80.54

7 0

3 years ago

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Elis [28]

yes because m<1+m<4 = 180 degrees

6 0

3 years ago

How many decibels is this? show work

slavikrds [6]

Answer:

115 dB

Explanation:

1. Given equation:

$\beta =10log(\frac{I}{I_0})\\\\ I_0=10^{-12}W/m^2$

2. Given intensity:

$I=0.315W/m^2$

3. Decibels

$\beta =10log(0.315/10^{-12})\\ \\ \beta =10log(315,000,000,000)\\ \\ \beta =10(11.498)=114.98\approx 115$

4 0

3 years ago

Simplify the polynomial by combining like terms

Veseljchak [2.6K]

Answer:

22 x^2

Step-by-step explanation:

Simplify the following:

11 x^2 + 11 x^2

Hint: | Add like terms in 11 x^2 + 11 x^2.

11 x^2 + 11 x^2 = 22 x^2:

Answer: 22 x^2

none of your answers are correct.

8 0

3 years ago

A monomial of the 2nd degree with a leading coefficient of 3

Rzqust [24]

Given:

Polynomials

To find:

Monomial of 2nd degree with leading coefficient 3

Solution:

Monomial is an algebraic expression with only one term.

Option A: $3 n^{2}-1$

It is not a monomial because it have 2 terms.

It is not true.

Option B: $3 n-n^{2}$

It is not a monomial because it have 2 terms.

It is not true.

Option C: $3 n^{2}$

It have one term only. So, it is a monomial.

Degree means highest power. So degree = 2

Leading coefficient means the value before variable.

Leading coefficient = 3

It is true.

Option D: $2n^3$

It have one term only. So, it is a monomial.

Degree means highest power. So degree = 3

It is not true.

Therefore $3 n^{2}$ is a monomial of 2nd degree with a leading coefficient of 3.

5 0

3 years ago