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3 years ago

If the opposite angle of rhombus are (2x)°and (3x-40°) then what is the value of x?

Mathematics

2 answers:

ch4aika [34]3 years ago

8 0

C I don’t know actually

djverab [1.8K]3 years ago

4 0

we know, that the opposite angles of a Rhombus are equal,

so,

=》

$2x = 3x - 40$

=》

$3x - 2x = 40$

=》

$x = 40$

so, the value of x = 40°

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Arturiano [62]

$D=b^2-4ac\\D=4^2-4(4)(1)\\D=16-16\\D=0$

Meaning there's only 1 real root, complete the square and you get the answer.

$(x+y)^2=x^2+2xy+y^2$

We're going to use this formula, so if x² = 4x² then x = 2x

and if y² = 1 then y = 1

Straight to formula

$(2x+1)^2=0\\x=-\frac{1}{2}$

Because (2x+1)² is basically (2x+1)(2x+1), we get the same value of x.

So the answer is x = -1/2

(When D>0, there are 2 real roots.)

(When D=0, there are only 1 real root.)

(When D<0, there are no real roots, but 2 complex roots.)

8 0

3 years ago

Afirm’s marketing manager believes that total sales X can be modeled using a normal distribution with mean m ¼ $2.5 million and

Ugo [173]

Answer: 0.0475

Step-by-step explanation:

Given : A firm’s marketing manager believes that total sales X can be modeled using a normal distribution.

Where , Population mean : $\mu=2.5\text{ million}=2.5\times1000000=2500000$

Standard deviation : $\sigma=300000$

To find : Probability that the firm’s sales will exceed $3 million i.e. $ 3,000,000.

∵ $z=\dfrac{x-\mu}{\sigma}$

Then , for x= 3,000,000

$z=\dfrac{3000000-2500000}{300000}=1.67$

Then , the probability that the firm’s sales will exceed $3 million is given by :-

$P(z>1.67)=1-P(z$

Hence, the probability that the firm’s sales will exceed $3 million = 0.0475

4 0

3 years ago

If the strength of the magnetic field at B is 6 units, the strength of the magnetic field at A is ? 1.5 , 0.75 units , 24 units

Vadim26 [7]

Answer:

1. The strength of magnetic field at A is 64 unit, then the magnetic field strength at B. is 256 units.

64 × 64 = 256 units.

2. If the strength of magnetic field B is 6 units then the strength magnetic field at A is 24 units.

which is 256 : 4 = 16 units.

Magnetic field is one of the two ways where the intensity of magnetic field is being expressed.

8 0

3 years ago

Read 2 more answers

Convert to an improper fraction. Type in your answer with the negative in the numerator.

erastova [34]

-11 1/3 = -34/3
Because 3(-11) = -33 -1 = -34/3

5 0

3 years ago

The volume of a right circular cone varies jointly as the altitude and the square of the radius of the base. If the volume of th

Tresset [83]

Answer:13.5 inches

Step-by-step explanation:

Here, the volume of a right circular cone varies jointly as the altitude and the square of the radius of the base

So our equation for volume becomes

V = c*h*r^2

where 'h' is altitude and 'r' is radius of base and 'c' is constant

Putting the value of V,h,r,

we get,

154 = c*12*3.5*3.5

c = 22/21

Now we have volume = 77 cu and radius of the base =7/3, so putting the values we get,

77 = 22/21*h*7/3*7/3

or, h= 13.5

Hope it helps!!!

6 0

3 years ago

Read 2 more answers