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2 years ago

Find the value of x in the following parallelogram: 2x х х 2x

Mathematics

2 answers:

aleksley [76]2 years ago

5 0

Answer:

x+2x+x+2x=360( sum of interior angles of a parallelogram)

6x=360

x=360÷6

x=60

Softa [21]2 years ago

5 0

Answer:

60°

Step-by-step explanation:

The sum of the angles in any quadrilateral is 360°. In a parallelogram the sum of neighboring angles is 180°. Therefore:

2x + x = 180°

3x = 180°

x = 60°

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What is the product of a+3 and −2a2+15a+6b2?

Lady bird [3.3K]

Answer:

c. 2a3+9a2+45a+6ab2+18b2

Step-by-step explanation:

(a+3) + (−2a2+15a+6b2)

Using distributed p. with and a and 3

a(−2a2) + a(15a) +a(6b2) and 3(−2a2) + 3(15a) + 3(6b2)

= -−2a3 + 15a2 + 6ab2 = -6a2 + 45a + 18b2

Now add like terms and put in standard form.

15a2+(-6a2) = 9a2

And equals

-2a3 + 9a2+45a+6ab2+18b2

Trust me I took the test and got 100%

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3 years ago

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8r+9r-11r+7r what is the answer I have to turn it in today!!

Drupady [299]

Answer:

13r

Step-by-step explanation:

8+9=17-11=6+7=13

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2 years ago

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PLEASE HELP TRYING TO MAKE HONOR ROLL

FromTheMoon [43]

Answer:

it is B. -11 and 47

Step-by-step explanation:

you have to take away 47 and 11 and it equals 36.

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3 years ago

Lines C and d are perpendicular. If the slope of line c is -4, what is the slope of line d?

CaHeK987 [17]

The slope of line D is also -4 because the lines are perpendicular.

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2 years ago

If the ratio of the length of segment AC to the length of segment CB is 3:1, what is the y-coordinate of point C?

Yuki888 [10]

Answer:

The coordinates of point C are (8,8.5)

Step-by-step explanation:

The picture of the question in the attached figure

Let

$(C_x,C_y)$ ----> coordinates of point C

we have that

The horizontal distance AB is equal to

$AB_x=10-2=8\ units$

The vertical distance AB is equal to

$AB_y=10-4=6\ units$

Find the horizontal coordinate of point C

we know that

$\frac{AC}{CB}=\frac{3}{1}$

$\frac{AC_x}{CB_x}=\frac{3}{1}$

$AC_x=3CB_x$ ----> equation A

$AC_x+CB_x=8$ ----> equation B

substitute equation A in equation B

$3CB_x+CB_x=8$

$4CB_x=8\\CB_x=2$

$AC_x=3(2)=6$

The x-coordinate of point C is equal to the x-coordinate of point A plus the horizontal distance between the point A and point C

$C_x=A_x+AC_x=2+6=8$

Find the vertical coordinate of point C

we know that

$\frac{AC}{CB}=\frac{3}{1}$

$\frac{AC_y}{CB_y}=\frac{3}{1}$

$AC_y=3CB_y$ ----> equation A

$AC_y+CB_y=6$ ----> equation B

substitute equation A in equation B

$3CB_y+CB_y=6$

$4CB_y=6\\CB_y=1.5$

$AC_y=3(1.5)=4.5$

The y-coordinate of point C is equal to the y-coordinate of point A plus the vertical distance between the point A and point C

$C_y=A_y+AC_y=4+4.5=8.5$

therefore

The coordinates of point C are (8,8.5)

5 0

2 years ago