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2 years ago

Factor (a-2b) (3x-5y) + (2b-a)(x-y)

Mathematics

1 answer:

agasfer [191]2 years ago

6 0

Answer:

8by + 2ax - 4bx - 4ay

Step-by-step explanation:

I assume you mean expand so:

(a - 2b)(3x - 5y) + (2b - a)(x - y)

3ax - 5ay - 6bx + 10by + 2bx - 2by - ax + ay

Now collect like terms:

2ax - 4ay - 4bx + 8by

This is your answer but in a better order:

8by + 2ax - 4bx - 4ay

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Perimeter:<br>Find the missing length by looking at the sides that<br>are equal.<br>

miss Akunina [59]

Answer:

top left perimeter is 36 top left is 28 bottom right is 72 i cant see the bottom left

Step-by-step explanation:

but yeah just take each number multiply by 2 then add both of them up

7 0

3 years ago

What is the measure of major B 84° O 276° O252° O 84° O 168 arc AB? A

alekssr [168]

Answer:

A - 84°

Step-by-step explanation:

The measure of an arc is equal to the measure of the central angle that intersects it.

The central angle of this circle measures 84° and it intercepts arc AB, meaning arc AB measures 84°

4 0

1 year ago

The sum of two numbers is 57 The larger number is 15 more than the smaller number. What are the numbers?

mixas84 [53]

X+y=57
y=x+15
x+x+15=57
2x=42
x=21
y=21+15
y=36

5 0

3 years ago

Five spheres are being painted for a display at a store. If the diameter of each sphere is

ivanzaharov [21]

<h2>Hello!</h2>

The answer is:

The total area is:

$TotalArea=192.4cm^{2}$

To find the cloasest value to the total surface area that will be painted, we need to calculate the area of a single sphere, and then, multiply it by 5.

We know that the diameter of each sphere is 7 centimeters, so, calculating we have:

Calculating the radius we have,

$diameter=2*radius\\\\radius=\frac{diameter}{2}=\frac{7cm}{2}=3.5cm$

Then, calculating the area, we have:

$Area=\pi radius^{2}$

$Area=\pi 3.5cm^{2}=38.49cm^{2}$

Now that we have calculated the surface area of a single sphere, we need to calculate the area of the five spheres.

So, calculating we have:

$TotalArea=5*38.48cm^{2}=192.4cm^{2}$

Hence, the total area is:

$TotalArea=192.4cm^{2}$

Have a nice day!

4 0

3 years ago

Please I need answers ASAP

Vinil7 [7]

9+x / 3x = 5/6

If you look at it as a proportion, then you can "cross-multiply" it"

(9+x) · 6 = 3x · 5

54 + 6x = 15x

Subtract 6x from each side:

54 = 9x

Divide each side by 9 :

6 = x

7 0

3 years ago