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3 years ago

What is the value of x?

Mathematics

1 answer:

Yuliya22 [10]3 years ago

4 0

Answer:

Step-by-step explanation:

∠QRT and ∠SRT are supplementary angles,

therefore m∠QRT + m∠SRT = 180°.

(45x)° + m∠SRT = 180° subtract (45x)° from both sides

m∠SRT = 180° - (45x)°

We know: the sum of the measures of the angles of the triangle is equal to 180 °. Therefore we have the equation:

(180 - 45x) + (57 + x) + 25x = 180 combine like terms

(-45x + x + 25x) + (180 + 57) = 180

-19x + 237 = 180 subtract 237 from both sides

-19x = -57 divide both sides by (-19)

x = 3

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A 11 only B 1 and 11 only C 1 11 and 111 D 1 only

Lostsunrise [7]

Answer:

Step-by-step explanation:

on the triangle.

I think that is right as I just was reading on this.

3 0

4 years ago

If the points (2,7),(-3,3) and (5,1) are the vertices of a triangle ,find the length of the median drawn through the first verte

Bingel [31]

Answer:

$\sqrt{26}$ units

Step-by-step explanation:

The median is the line segment connecting the vertex with the midpoint of the opposite side.

The midpoint has coordinates:

x = (-3 + 5)/2 = 2/2 = 1
y = (3 + 1)/2 = 4/2 = 2

Use the distance formula to find the distance between points (2, 7) and (1, 2):

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$
$d=\sqrt{(1- 2)^2+(2-7)^2} =\sqrt{1+25} =\sqrt{26}$

7 0

3 years ago

Read 2 more answers

What is the definite integral of log (tan x) with range from 90 to 0

nasty-shy [4]

Substituting x with π/2 - x gives the equivalent integral,

$\displaystyle\int_0^{\frac\pi2}\log(\tan(x))\,\mathrm dx=-\int_{\frac\pi2}^0\log(\cot(x))(-\mathrm dx)=\int_0^{\frac\pi2}\log(\cot(x))\,\mathrm dx$

So if we let J denote the value of the integral, we have

$J=\displaystyle\int_0^{\frac\pi2}\log(\tan (x))\,\mathrm dx$

$J=\displaystyle\int_0^{\frac\pi2}\log(\cot (x))\,\mathrm dx$

$\implies 2J=\displaystyle\int_0^{\frac\pi2}\left(\log(\tan (x))+\log(\cot (x))\right)\,\mathrm dx$

Condensing the logarithms, we have

log(tan(x)) + log(cot(x)) = log(tan(x) cot(x)) = log(1) = 0

since cot(x) = 1/tan(x), which means

$2J=\displaystyle\int_0^{\frac\pi2}0\,\mathrm dx=0$

and so the original integral has a value of J = 0.

3 0

3 years ago

Please answer, I don't know because I'm not the smartest.

Eva8 [605]

Answer:

9 * l = 54

Step-by-step explanation:

You don't need to worry because you are not the smartest, everyone are different, some concepts might be difficult, but will become easy soon....

Here is the answer to your question,

area of a rectangle = length * width

( * = multiplication symbol, specifying as many feel confused )

A = l * w

Here..... A = 54 m², w = 9m

54 = l * 9 or...

9 * l = 54

7 0

3 years ago

HELP PLEASE!!!!!

Varvara68 [4.7K]

Maybe you should ave a tutor and not ask for answers???

8 0

4 years ago