please someone help me i'm gonna cry lol

Answer:

72°

Step-by-step explanation:

here's your solution

=> we know angle A + angle S = 2

=> angle 2 = 30° + 42°

=> 72°

hope it helps

Answer:

example 7 x 3 means you add 7  3 times

Step-by-step explanation:

Answer:

Mr. Levy will pay 40% of the price, which is $2.80.

Step-by-step explanation:

Hope this helps!

Answer:

B I believe that's the answer

Step-by-step explanation:

Answer:

4th option (x = 60)

Step-by-step explanation:

This is isosceles triangle so the angles are the same. Think of this as an mirror. AE is the same as BE so you can assume angle ABE is 30 degrees.

30+30=60

180-60=120

So angle AEB is 120.

That is supplementary angle so the other side must be 180-120=60.

So, the middle smaller triangle is isosceles as well, so BED and BDE are both 60.

60+60=120, 180-120=60

So angle x = 60

Answer:

345600000000 and 670

Step-by-step explanation:

Answer:

can you put an illustration or picture for me to understand what your saying?.

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

ratio = 12:20

12/4 = 3

so we do

20/4 = 5

there are 5 boys

Another way, we can write it as a fraction

12/20 = 3/x

12x = 60

x = 5

Answer:

5 boys

Step-by-step explanation:

Write it like this:

3/X=12/20

Then, cross multiply.

3*20=60

X*12=12X

12X=60

Divide both sides by 12

60/12=5

X=5

The unknown number is 5

If there are 3 girls, then there are 5 boys.

Answer:

Hard

Step-by-step explanation:

I don't know sorry

Answer:

8x20+22

160+22

182.

48x4= 192 (closest to 182) since you can’t have a remainder of kids.

(I’m in 6th grade so I hope I helped and didn’t get it wrong)

So the answer is 4 or 5 busses.

Answer:

the quadratic equation cannot be written as the square of a binomial

Step-by-step explanation:

Given the expression

x^2 + 8x - 3 = 0

On factorizing

x = -8±√8²-4(-3)/2

x = -8±√64+12/2

x = -8±√76/2

x = -8±8.7/2

Note that since the since the discriminant is not a prefect square, the quadratic equation cannot be written as the square of a binomial

Answer:

4y^2 - 9x^2 = -36

Step-by-step explanation:

x = 2 sec t

y = 3 tan t

x^2 = 4 sec^2 t

y^2 = 9 tan^2 t

Now sec^2t = 1 + tan^2 t so we have:

4(1 + tan^2 t) + 9 tan^2 t = x^2 + y^2

4 + 13 tan^2 t = x^2 + y^2

13 tan^2 t = x^2 + y^2/ - 4

tan^2 t = x^2/13 + y^2/13 - 4/13

But , from the second equation tan t =  y/3 so tan^2 t = y^2/9, so:

y^2/9 =  x^2/13 + y^2/13 - 4/13

LCM of 9 and 13 is 117 so multiply thru by 117:

13y^2 = 9y^2 + 9x^2- 36

4y^2 - 9x^2 = -36

Answer:

[tex]\frac{2x+y}{w}[/tex]

Answer:

B

Step-by-step explanation:

Answer:                                                                                                                       1.)−(3

Answer:

I BELIVE IT IS -2

Step-by-step explanation:

Answer is 6.88 cm

Divide the pentagon radially into five congruent, isosceles triangles. Each triangle has a vertex angle of 360°÷5=72° and altitude of 5÷tan(36°).

radius of circle = 5÷tan(36°) = 6.88 cm

t/17=-3

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I have no idea how to explain so...

hope it helps?

Answer:

Well the opposite of three (my guess) would be -3 so you multiply 17 by -3 and that is -51 (-51÷17=-3) so the number is -51

Step-by-step explanation:

Answer:

there are 431 females and 354 males in the class

Step-by-step explanation:

Let the number of females student in the class be x

Let the males by y

If there are 785 students in the senior class, then;

x+y = 785 .... 1

If there are 77 more females in  the class than males, then;

x = y+77 ....2

Substitute 2 into 1

y+77+y = 785

2y = 785 - 77

2y = 708

y = 708/2

y = 354

Since x = 785 - y

x = 785 - 354

x = 431

Hence there are 431 females and 354 males in the class

Answer: x = 3, 19

Step-by-step explanation:

Given

Two points i.e.  [tex](11,2)\ \text{and}\ (x,-4)[/tex] are given

Distance between them is 10 units

Distance is given by the distance formula

[tex]\Rightarrow d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

Distance between two points is

[tex]\Rightarrow 10=\sqrt{(x-11)^2+(-4-2)^2}[/tex]

Squaring both sides

[tex]\Rightarrow 100=(x-11)^2+(-6)^2\\\Rightarrow 100=x^2+121-22x+36\\\Rightarrow x^2-22x+57=0\\\Rightarrow x^2-19x-3x+57=0\\\Rightarrow x(x-19)-3(x-19)=0\\\Rightarrow (x-19)(x-3)=0[/tex]

i.e. [tex]x\ \text{can be }\ x=3\ or\ 19[/tex]

Answer:

c,or d I think please be right

Answer:

I hope this helps you :)

Answer:

2x+3y=9

2x+2-3y+1=8

2x-3y=8

2x-3y+3y=8+3y

2x=8+3y

2x=8+3y

2      2

x=8+3y

    2

2(x) +3y=9

2* (8+3y)/2 +3y=9

(16+6y)/2)+3y=9

2*(16+6y)/2)+3y=9

16+6y+6y=18

6y+6y=18-16

12y=2

12y = 2

12      12

y=2

  12

y=0.16666666666667

2x+3 (0.16666666666667)=9

2x+0.5=9

2x=9-0.5

2x=8.5

2x = 8.5

2       2

x=8.5

    2

x=4.25

Answer:

c

Step-by-step explanation:

Answer: Its either D OR C.

Step-by-step explanation: its less than (suppose to be).

Answer:

x = 8/3 or 2 2/3

Step-by-step explanation:

x - 5/3 = 1

x - 5/3 + 5/3 = x

1 + 5/3 = 8/3 or 2 2/3

x = 8/3 or 2 2/3

Answer:

x = [tex]\frac{8}{3}[/tex]

Step-by-step explanation:

Given

x - [tex]\frac{5}{3}[/tex] = 1 ( multiply through by 3 to clear the fraction )

3x - 5 = 3 ( add 5 to both sides )

3x = 8 ( divide both sides by 3 )

x = [tex]\frac{8}{3}[/tex]