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3 years ago

6

2x^2−10xy+3xy−15y^2 factor by grouping

2 answers:

Diano4ka-milaya [45]3 years ago

8 0

2x²-10xy+3xy-15y²

Add like terms.

2x²+ (-10xy+3xy) -15y²

Simplify.

2x² + (-7xy) - 15y²

Rearrange the equation.

2x²-15y²-7xy

~Hope I helped~

SIZIF [17.4K]3 years ago

8 0

There are four terms in your algebraic expression. Notice that the left two terms have the factors 2 and x in common, whereas the right two terms have the factors 3 and y in common:

2x(x-5y) + 3y(x-5y). Can you now factor this further? Note that the two terms here have a common factor, (x-5y).

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If you use the addition property of equality , what number would you add to both sides of the equal sign to isolate the variable

kkurt [141]

Answer:

The answer is " $\frac{26}{7}$ "

Step-by-step explanation:

The whole question can be found in the file attached.

$\to x + \frac{5}{7} = \frac{31}{7}\\\\$

Subtracting the $\frac{5}{7}$ from both sides of the equations:

$\to x +\frac{5}{7} - \frac{5}{7} = \frac{31}{7} - \frac{5}{7} \\\\$

$= \frac{31-5}{7} \\\\= \frac{26}{7} \\\\$

5 0

3 years ago

Type the missing number in this sequence: 90, 78, 72, 66, 60, 54

ZanzabumX [31]

Answer:

48

Step-by-step explanation:

minus 6 every number

4 0

3 years ago

Pleaseeeeee hellopppppppp!!

Nastasia [14]

Answer:

A. 29

B. 11

C. 10

D. 12

Step-by-step explanation:

A. 180 - 122 = 58

58 divided by 2 = 29

-

B. 180 - 37 = 143

x = 11

5 x 11 = 55

8 x 11 = 88

55 + 88 = 143 + 37 - 180

-

C. the small box in a triangle means right angle = 90

90 - 68 = 22

(2x - 2) we subtract before finding out what x is

22 - 2 = 20

2x = 20 divide by 2 = 10

x is equal to 10

-

D. to find the total, you must figure out what each equation is to add them up to make 180.

(8x + 3) + (2x + 9) + 4x = 180

add up the numbers with x and the numbers without them

14x + 12 = 180

subtract 180 - 12 = 168

168 divided by 14 = 12

x = 12

Hope this helped !!

6 0

3 years ago

DUE TODAY AT 4 HELP ME

liq [111]

Answer:

The bar over the 9 means that the nine is repeating itself

7 0

3 years ago

Read 2 more answers

What is the volume of this sphere?

Inga [223]

Answer:

$V=2143.57\ mm^3$

Step-by-step explanation:

Given that,

The radius of the sphere, r = 8 mm

We need to find the volume of the sphere. The formula for the volume of a sphere is given by :

$V=\dfrac{4}{3}\pi r^3$

Put all the values,

$V=\dfrac{4}{3}\times 3.14\times 8^3\\\\=2143.57\ mm^3$

So, the volume of the sphere is equal to $2143.57\ mm^3$ .

6 0

3 years ago