**Answer:**

cos

**Step-by-step explanation:**

take 31 degree as reference angle

using cos rule

cos 31=adjacent/hypotenuse

0.85=14/x

x=14/0.85

x=16.47

x=16.5

Hello :

let : x = s so : y = x-1

all points is the line passe by : (1, 0) of the slope 1

**Answer:**

ANSWER

**Step-by-step explanation:**

Correct option is

D x=32, b=89 degrees, d=91 degrees

In

∥

gm

opposite angles are supplementary.

Therefore,

∠B+

∠D=

180

∘

2x+

25+

3x−

5=

180

∘

x=

5

180−20

=

32

∠B=

2x+

25=

(2∗

32)+

25=

89

∘

∠D=

3x−

5=

(3∗

32)−

5=

91

∘

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11

1

SIMILAR QUESTIONS

In Fig. diagonals

AC

and

BD

of quadrilateral

ABCD

intersect at

O

such that

OB=

OD

. If

AB=

CD

, then show that :

i) ar (△DOC)= ar( △AOB)

ii) ar (△DCB)= ar (△ACB)

iii)

DA∥

CB

or

ABCD

is parallelogram.

Medium

View solution >

If the perimeter of a parallelogram is 50cm and one side is12

cm. what is the measure of the other side ?

Area = 100Sq/in

Perimeter = 40

Easiest side length would be 10in x 10in = 100sq/in (ie a square)

Instead of a square, the 100sq in could be 100 laid out in a long row: the perimeter therefore would be 100 + 1 + 100 + 1 = 202in. Not a square

**Answer:**

f(x) = 3x² + 6x + 3

**Step-by-step explanation:**

The standard form of a quadratic is . To write the equation f(x)=-3(x+1)(x+1) in standard form, multiply the factors using the distributive property and combining like terms.

f(x)=-3(x+1)(x+1)

f(x) = 3(x²+x+x+1)

f(x) = 3x² + 3x + 3x + 3

f(x) = 3x² + 6x + 3