Someone help me out please!! YOU WILL GET BRAINLIEST

Answer:

19) 0.8000

20) 0.8824

21) 0.2800

22) 1.8750

23) 0.8000

24) 0.8000

Step-by-step explanation:

sin = opp/hyp

cos = adj/hyp

tan = opp/adj

19) sin Z = 40/50 = 0.8

20) sin C = 30/34 = 0.882352941

21) sin A = 7/25 = 0.28

22) tan X = 30/16 = 1.875

23) cos X = 28/35 = 0.8

24) cos C = 36/45 = 0.8

Answer:

12

Step-by-step explanation:

ℎ ℎ 12

Answer:

6 phones and 18 accessories

Step-by-step explanation:

12P + 3.50A = 135

A = 12 + P

12P + 3.50(12 + P) = 135,

12P + 42 +3.50P = 135

15.50P = 93

P = 6 phones

A = 12 + 6 = 18 accessories

Answer: 50% increase

Step-by-step explanation:

Think of 20 as 100%

Half of 20 is 10 which is 50% in this scenario.

30-20=10

This means that the price of the item increased by 50% or 10.

Answer:

72.4 and 107.6

Step-by-step explanation:

on delta math

Answer:

function is [tex]y = 3 (6^{x})[/tex]

Step-by-step explanation:

The general form for an exponential function is [tex]y = kb^{x}[/tex].   We need to find both k and b

(0, 3) is a point on the graph.  So, let's substitute 0 in for x and 3 in for y

[tex]3 = k b^{0} = k(1) = k[/tex]

Now we know that k = 3

(1, 18) is a point on the graph.  So, let's substitute 1 in for x, 18 in for y and 3 in for k

[tex]18 = 3 b^{1} = 3b\\6 = b[/tex]

Now we know that b = 6

Therefore, the function is [tex]y = 3 (6^{x})[/tex]

That's not too bad, isn't it?

Answer:

c

a fraction bar Is just a division bar, it's c.

Answer:

Step-by-step explanation:

A

Answer:

x=15.714

y=5.715

Step-by-step explanation:

Answer:

x=10, y=20

Step-by-step explanation:

okay so to find x, or the way I did it, we just have to look at the top, we know one line is 180 degrees, and we see three angles, 7x,90, and 20

so 90+20+7x=180

and:110+7x=180

therefore: 7x=70

and finally: x=10

To find y also isn't had if we just look at the blue and green lines we see they are intersecting and opposite angles in intersecting lines are congruent meaning they are the same. So we now know that:

5x+2y=90

and we know x=10

so 5x=50

meaning that: 50+2y=90

therefore: 2y=40

and in conclusion y=20

Answer:

Since them taken same time so the fraction is 1/1

Answer:

itsssssssssssssssssss C

Answer:

a = 2 √13 cm

Step-by-step explanation:

Here, we want to find the length of BC

To do this, we can use the cosine rule

Thus;

a^2 = b^2 + c^2 - 2BC cos A

= 8^2 + 6^2 - 2(8)(6) cos 60

Mathematically cos 60 = 1/2

= 64 + 36 - 48 = 52

a^2 = √52

a = 2 √13 cm

Answer:

a=6

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

4a+1−a=19

(4a+−a)+(1)=19 (Combine Like Terms)

3a+1=19

Step 2: Subtract 1 from both sides.

3a+1−1=19−1

3a=18

a=18/3

a=6

--

Answer:

hypotenuse =13cm

base=10cm

perpendicular =?

Step-by-step explanation:

by using Pythagoras law

hypotenuse=perpendicular²+base²

13²=perpendicular²+10²

perpendicular =√(13²-10²)=√69=8.3cm

the measure of the other leg is 8.3cm

The measure of the other leg is 8.3 cm .

The Pythagoras theorem states that if a triangle is right-angled (90 degrees), then the square of the hypotenuse is equal to the sum of the squares of the other two sides.

Formula of Pythagoras theorem :

(Hypotenuse)² = (Base)² + (Perpendicular)²

According to the question

Hypotenuse of a right triangle = 13 cm

Perpendicular of a right triangle = 10 cm

Now,

Base of a right triangle  

By using formula of Pythagoras theorem :

(Hypotenuse)² = (Base)² + (Perpendicular)²  

Substituting the values

(13)² = (Base)² + (10)²  

169 = (Base)² + 100

69 = (Base)²

Base = [tex]\sqrt{69}[/tex]

Base = 8.3 cm

Hence,  the measure of the other leg is 8.3 cm .

To know more about Pythagoras theorem here:

https://brainly.com/question/343682

#SPJ3

Answer:

96

Step-by-step explanation:

100%-60%=40%

40% of x = 64 students (X=Total no. of students)

(40/100)*x=64

x=64*(100/40)

x=160

Missing no. of students=160-64=96

Answer:

96 students

Pls mark me brainliest!

Step-by-step explanation:

If an unknown amount of students is 60% of the students, the 64 of the students must be 40% of the students because 40+60 = 100.

You want to find what 1% equals, so we will divide 64 by 40 because 40% divided by 40 = 1% and whatever you do to one side you do to the other.

64/40 = 1.6

Assuming that the ? number of students that equals 60% will be a whole number, lets go with 1.6.

If 1.6 = 1%, and we want 60%, then multiply both sides by 60, because 1*60 = 60.

1.6*60 = 96

96 students

Answer:

81 units³

Step-by-step explanation:

V = Length x Widht x Height

= 9 x 3 x 3

= 81 units³

Answer:

Step-by-step explanation:

20% of 30 is 6 are randomly selected.

30 choose 6 = 30! / (30-6)! 6!

                 = 30! / 24!6!

                 = 30 * 29 * 28 * 27 * 26 * 25

                   --------------------------------- <-- 24! cancels

                    6 * 5 * 4 * 3 * 2 * 1

                 = 29 * 28 * 27 * 26 * 25

                  ---------------------------------- <--- 30 = 6 * 5 cancels

                      4 * 3 * 2 * 1

                = 29 * 7 * 9 * 13 * 25   <--  4 cancels 28, 3 cancels 27, 2 cancels 26

               = 593775

Answer:

Step-by-step explanation:b448

Answer:

I think it's vertex bestie not sure tho lmk if it's wrong

Answer:

It is 9

Step-by-step explanation:

9x - 2 = 79

9x = 81

x = 9

Answer:

D.   2 ≤ x ≤ 5

Step-by-step explanation:

Notice that there are no points on the graph for x ≤ 2 and x ≥ 5.  Or another way to look at it is that the x's are between 2 and 5, inclusive.

The domain is the set of possible x values.  Therefore,  2 ≤ x ≤ 5 is the set of  values for the domain

The bones of the body come in a variety of sizes and shapes. The four principal types of bones are long, short, flat and irregular. Bones that are longer than they are wide are called long bones. They consist of a long shaft with two bulky ends or extremities.

Los huesos del cuerpo tienen una variedad de tamaños y formas. Los cuatro tipos principales de huesos son largos, cortos, planos e irregulares. Los huesos que son más largos que anchos se llaman huesos largos. Consisten en un eje largo con dos extremos o extremidades voluminosas.

If i'm  wrong please tell me

Answer:

x= 1 , y=4

Step-by-step explanation:

x-y= -3 => Equation 1

x+5y= 21 => Equation 2

Substitution Method:

Substitute Equation 1=>

x=y-3 <= Equation 3

Put x=y-3 in Equation 2:

x+5y=21

( y-3)+5y=21

y-3+5y=21

6y-3=21

6y=21+3

6y=24

y=24÷6

y=4

Put y=4 in Equation 1:

x-y= -3

x-4=-3

x=4-3

x=1

Hope this helps :)

Answer:

x = 1

y = 4

Step-by-step explanation:

x - y = -3   then x = y - 3

x + 5y = 21

substitute for x:

y - 3 + 5y = 21

reduce:

6y = 24

y = 4

x = 4 - 3 = 1

check:

1 - 4 = -3

-3 = -3

and

1 + 5(4) = 21

21 = 21

Answer:

12x-39

Step-by-step explanation:

40-1=39