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2 years ago

M+3=5:m=? please give me explained

Mathematics

1 answer:

storchak [24]2 years ago

6 0

Answer: M = 2

Step-by-step explanation:

Given equation: m+3=5

You need to isolate m so you can find its value. Subtract 3 from the left side, and do the same to the right side. Subtracting 3 from 5 as well makes the number become 2 on the right side of the equation. Therefore, m=2.

A rule you should always remember is when you have a value on each side of the equal sign, whatever form of addition, subtraction, multiplication, or division should be done to the other side as well.

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Keiko bought 2 CDs that were each the same price. Including sales tax,she paid a total of $34.20. Of that total, $1.80 was tax.

snow_tiger [21]

Answer:

The cost of each CD without tax us $16.20

Step-by-step explanation:

Given that:

Price to two CDs with tax = $34.20

Tax = $1.80

Cost of CDs without tax = Total cost - Amount of tax

Cost of CDs without tax = 34.20 - 1.80 = $32.40

Price of each CD = $\frac{32.40}{2}$

Price of each CD = $16.20

Hence,

The cost of each CD without tax us $16.20

8 0

2 years ago

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svetlana [45]

Answer:

Step-by-step explanation:

191.2 = 2.3L +65.5

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125.7= 2.3L

L = 125.7/2.3

L = 54.65

3 0

2 years ago

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Find the perimeter of triangle ABC.

Harlamova29_29 [7]

By definition, the perimeter of the triangle is the sum of its sides.
We must then use the formula of distance between points:
$d = \sqrt{(x2-x1) ^ 2 + (y2-y1) ^ 2}$
We now look for the longitus for each of the sides:

For L1:
$L1 = \sqrt{(6-2)^2 + (6-2)^2}$
$L1 = \sqrt{32} 
$
$L1 = 4\sqrt{2}$

For L2:
$L2 = \sqrt{(7-2)^2 + (-3-2)^2}$
$L2 = \sqrt{50}$
$L2 = 5\sqrt{2}$

For L3:
$L3 = \sqrt{(7-6)^2 + (-3-6)^2}$
$L3 = \sqrt{82}$

Then, the perimeter is given by:
P = L1 + L2 + L3
Substituting values we have:
$P = 4\sqrt{2} + 5\sqrt{2} + \sqrt{82} 

P = 9\sqrt{2} + \sqrt{82}$

Answer:
the perimeter of triangle ABC is:
none of the above.

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3 years ago

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*20 points*<br> how do you get the weighted average from this table?

sertanlavr [38]

Answer:

Weighted average is the average of a set of numbers, each with different associated “weights” or values. To find a weighted average, multiply each number by its weight, then add the results.

Step-by-step explanation:

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3 years ago

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There are 273 students in the 7th grade. If the

Elanso [62]

Answer:

Each teacher will have 21 students

Step-by-step explanation:

273 divded by 21 = 21

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2 years ago