PLEASE HELP

Mathematics

1 answer:

BabaBlast [244]2 years ago

8 0

Answer:

15x-15y=-1 that's is the answer

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What is the area of the triangle 10 13 12

disa [49]

Answer:

A= 57 sq units

Step-by-step explanation:

To calculate the are area of a triangle we use the Herons formula:

A=√s(s-a)(s-b)(s-c) where a, b and c are the sides of the triangle.

s=(a+b+c)/2

s=(10+13+12)/2

=17.5

A=√[17.5(17.5-10)(17.5-13)(17.5-12)]

A= 57 sq units

5 0

2 years ago

Evaluate using properties of arithmetic operations. 12∙121∙13÷(26∙11)∙7÷11

Anika [276]

Answer:

0.1978

Step-by-step explanation:

According to the rule of BODMAS (or FEDMAS), let us do the bracket first.

26·11 = 286

Now, do the multiplication from the left.

12·121·3 = 4356

286·7 = 2002

Now, do the division from the left.

$\frac{\frac{4356}{2002} }{11}$

$=\frac{4356}{2002(11)}$

$=\frac{396}{2002}$

= 0.1978

8 0

2 years ago

A store sells packages of pencils.which package offers the best unit price

tiny-mole [99]

The details of the packages are not posted, however I can tell you how to find the answer.

First determine how many pencils are in each pack.
Then divide the price of the pack by the number of pencils to find out which pack has the least cost per pencil. To put this in equation form:
$\frac{Cost}{Pencils}$

Whichever pack has the least cost per pencil is the one that is the best priced.

7 0

2 years ago

Consider the differential equation: dy/dx = (y-2)(x^2+1)

Klio2033 [76]

Answer:

Step-by-step explanation:

Given,

$\dfrac{dy}{dx}=(y-2)(x^2+1)$ ...(i)