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8_murik_8 [283]
3 years ago
9

Find square of (6m-5n) by using formula.​

Mathematics
1 answer:
pshichka [43]3 years ago
4 0

Answer:

36m² -60mn +25n²

Step-by-step explanation:

Formula=(a-b)²=a²-2ab+b²

(6m-5n)²

=(6m)²- 2×6m×5n + (5n)²

=36m² -60mn +25n²

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Find the value of x<br> 12<br> 5<br> X
steposvetlana [31]

Answer:

x = 13

Step-by-step explanation:

Note that the side length x is opposite of the right angle, which means that it is the hypotenuse, which will usually be denoted as c.

Set the equation:

a² + b² = c²

let:

a = 5

b = 12

c = x

Plug in the corresponding numbers (& x) to the corresponding variables:

(5)² + (12)² = (x)²

Simplify. First, solve for the power, and then add:

x² = (5²) + (12²)

x² = (5 * 5) + (12 * 12)

x² = 25 + 144

x² =  169

Next, root both sides of the equation:

√x² = √169

x = √169 = √(13 * 13) = 13

x = 13

~

Note the rules, and it should be easier:

30-60-90° = 1 , √3 , 2

45-45-90° = 1 , 1 , √2

Any other measurements use the equation:  a² + b² = c²

5 0
3 years ago
Amy had homework for math,science,and history.she spent 1/3 of her time working on math and 1/4 of her time working on science.
Alja [10]
First we need to multiply to make the fractions have equal denominators so we can add/subtract.

math: 1/3 x 4/4=4/12
science: 1/4 x 3/3=3/12

Now we can find the time she spent on history (I assume this is what you are looking for)

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8 0
3 years ago
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inn [45]

Answer:

The constant in the expression is 12

Step-by-step explanation:

The constant of the expression is the value that is independent of the number of minutes Janelle uses. The expression can  be written as :

f(m)=0.05m +12

Example if m is 1 or 2

f(1) = 0.05(1) +12 = 12.05

f(2= = 0.05*2 +12 =0.1 +12 = 12.1

The value 12 is the minimum price of the bill indepent of the consumption of minutes of Janelle. She will always be charged this value.

8 0
3 years ago
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A phone company charges $0.06 per minute for local calls and $0.15 per minute for international calls. When your bill comes, it
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Let's assume two variables x and y which represent the local and international calls respectively. 

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x = 852-208 = 644 minutes = local minutes
6 0
3 years ago
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