Triangle theoroms, what is the value of x ?

Answer:

Is this what you meant?

(2x + 3x) × (3 + 15) = 12x + 36

(5x) × (18) = 12x + 36

90x = 12x + 36

78x = 36

x = 36 / 78

x = 18 / 39

_____________________

or

3(2x+3x) + 15 = 12x + 36

10x + 15 = 12x + 36

-21 = 2x

2x = -21

x = -21/2

Answer:

a ≈ 22.184

Step-by-step explanation:

Using the Cosine rule in Δ ABC

a² = b² + c² - 2bc cosA

Here b = 15, c = 12 and A = 110° , then

a² = 15² + 12² - (2 × 15 × 12 × cos110° )

    = 225 + 144 - 360 cos110°

    = 369 - 360 cos110°

    = 492.12725.. ( take the square root of both sides )

a = [tex]\sqrt{x492.12725}[/tex] ≈ 22.184 ( to 3 dec. places )

Answer:

b

Step-by-step explanation:

hail can occur at temperatures not too cold and not too hot. since he checked his thermometer and it was warm, it is certainly possible that he saw hail

Answer:

[tex]y=\frac{3}{2} x+1[/tex]

Step-by-step explanation:

What we need to know:

1) Find the slope of line P

The slope of a line is equal to the [tex]\frac{rise}{run}[/tex], or the number of units the line moves up over the number of units the line moves to the right.

We can see that for line P, for every 2 units it moves to the right, it moves up 3 units.

Therefore, the slope of line P is [tex]\frac{3}{2}[/tex].

Knowing this, the equation of a line parallel to line P would have a slope of [tex]\frac{3}{2}[/tex] as well. Plug this into [tex]y=mx+b[/tex] as m:

[tex]y=\frac{3}{2} x+b[/tex]

2) Plug the given point Q into [tex]y=\frac{3}{2} x+b[/tex]  to find the y-intercept (b)

[tex]y=\frac{3}{2} x+b[/tex]

Plug in point Q (2,4)

[tex]4=\frac{3}{2} (2)+b\\4=\frac{6}{2}+b\\4=3+b[/tex]

Subtract 3 from both sides

[tex]4-3=3+b-3\\1=b[/tex]

Therefore, the y-intercept of this line (b) is 1. Plug this back into our original equation:

[tex]y=\frac{3}{2} x+b[/tex]

[tex]y=\frac{3}{2} x+1[/tex]

I hope this helps!

Step-by-step explanation:

f(-3)=(-3)^2+4

=9+4

=13

hope it helps u dear friend

Answer:

Step-by-step explanation:

Given

f(x) = x² + 4

Now

f(- 3) = (-3)² + 4

       = 9 + 4

       = 13

hope it helps :)

Answer:

mbcnnb.hhhhjsjsjsnwjwnnwnwnenenebebeneme dcecvejsksmemebeccehsnsnsne evvenekeiekekenbegegevebbehehenebebbebebendhfhhcjcmc d d ecevegjskdkdklxbxbcbfdvvdvdhejrklnssfbmjffbb c

Step-by-step explanation:

nbsnsmsmlslakwj

Answer:

Yes it is a right angled triangle.

Step-by-step explanation:

Applying the right angle rule X^2+Y^2=Z^2

33^2 + 56^2=4225

Square root=65

Answer:

about .24 mile per hour

1 mile is 5280 foot

Step-by-step explanation:

Answer:

-0.2

Step-by-step explanation:

Gradient/slope = [tex]\frac{7-5}{15-25} = \frac{2}{-10} = -0.2[/tex]

D

Y2 - Y1 / X2 - X1

7-5 =2 / 15-25 =-10

2/-10 =-0.2

Answer:

The answer is G

Step-by-step explanation:

All you do is move all the terms not containing x to the right side of the inequailty form: x < 3

Answer:

3.5

Step-by-step explanation:

so this triangle is symmetrical by AA. so x would be symmetrical to 7, and 2.5 is symmetrical to 5.

[tex]\frac{x}{2.5}[/tex] = [tex]\frac{7}{5}[/tex]

x×5=5x

2.5×7=17.5

5x=17.5

x=17.5/5

x=3.5

Answer:

73 degree,107 degree,73degree

Step-by-step explanation:

a straight line end up to 180 degrees

Answer:

72.33

Step-by-step explanation:

45 percent of 125 is 56.25 so you subtract that from 125 and get 68.75 and then you do 5.2 percent of 68.75 and get 3.575 which rounds to 3.58 and you add that to 68.75 and get 72.33

Answer: Yes

Step-by-step explanation: 2 x 10 = 20, then add the 5 to get 25, which is larger then 23 :)

Answer:

Looks like holographic glitter to me

Answer:

1234567891011121314151617181920

Answer:

A

Step-by-step explanation:

3x3x3 = 27

The number above the root symbol is the amount of time you have to multiply a number by itself. When we write the square root symbol the 2 is invisible, just like the 1 with a lone variable (x=1x).

In this case it is a cube root

Answer:

No, this is not a function. If you place the points, it will not pass the vertical line test. And, in a function, each x-coordinate has to have one y-coordinate. In this problem, there are two x-coordinates of 3, and they both have a different y-coordinate.

Step-by-step explanation:

Step-by-step explanation:

The traingle in Question B and A are right traingle because..If you use pythagoras theorem in those two questions,the sum of square of smaller two sides will be equal to the square larger side. Therefore they are rt.triangle. In D the case is opposite. As the sum of square of two smaller sides are comparatively more than larger sidei.e. hypotenuse. So it is not rt. triangle. This is your answer.

37 inches

Hope this helps!

Answer:

Yes.

Step-by-step explanation:

If the side lengths verify in the Pythagorean theorem, then it is a right triangle.

a² + b² = c²

15² + 20² = 25²

225 + 400 = 625

625 = 625

Since these values come out true when using the Pythagorean Theorem, this triangle is a right trinagle.

Answer:

850

Step-by-step explanation:

500 times 0.7 plus 500

Answer:

2x = 80. On dividing both sides by 2, we obtain. x = 40. x + 15 = 40 + 15 = 55. Hence ... Let the three consecutive multiples of 8 be 8x, 8(x + 1), 8(x + 2). Sum of ... Number after interchanging = 10 × 3x + x = 30x + x = 31x.

Answer:

33, 34, 35

Step-by-step explanation:

Semiprimes are the product of 2 prime numbers, then

11 × 3 = 33

17 × 2 = 34

7 × 5 = 35

Answer:

9

Step-by-step explanation:

just put the value and simplify it

Answer:

9

Step-by-step explanation:

12²-3³x5

=9

hope this helps. I'm glad to help. plz mark me as brainliest.

Answer:

C

Step-by-step explanation:

Pythagorean theorem = a² + b² = c²

Answer:

C.

Step-by-step explanation:

Pythagrean Theorem is on C

Answer:

Step-by-step explanation:

<JKL = 90 ( being inscribed angle in semi circle )

< JKP = 38 ( Inscribed angles on same arc are equal )

So now

<PKL = <JKL - < JKP

        = 90 - 38

        = 52

FINALLY

ARC PL = 2 * < PKL (Relation between arc and inscribed angle )

ARC PL = 2 * 52

             = 104

hope it helps :)