HELPPPPPPP PLS! 9th Grade Math

Answer:

i think it is A sorry if I am worng

Answer:

21 is the correct answer

Step-by-step explanation:

Answer:

the answer has to be C

if you were to.find the slope of K

y1-y1 / x1-x2

which will get you slope of 3

..now we do see that the slope of J is 2 and we foind slope of K to be 3 the diffrence is 1

Answer:

2:3

3:2

Step-by-step explanation:

Answer:

There are 25 students in the class.

Step-by-step explanation:

1. Set up an equation. The equation would be 6 = 24/100x.

2. Solve the equation. You can solve this by multiplying both sides by 100/24, and 100/24 * 6 = 25. You would then get that x = 25, which means that the number is 25.

Answer:

25 students

Step-by-step explanation:

25 x 0.24 = 6

Answer:

I think it’s when you multiply by 7 then add 9 but it’s just what I think.

Step-by-step explanation:

Answer:

y=6x-6

Step-by-step explanation:

i think not sure tho

Answer:

y = 6x

Step-by-step explanation:

i just got it right on TTM

Answer:

the answer is C 126°

Step-by-step explanation: well first i picked B 90° and it was wrong then i picked C and i got it right

Answer:

Nicole is correct

Step-by-step explanation:

by multiplying the first equation by 3 it becomes:

3x + 6y =21

this can cancel the -3x in the second equation when adding them together

Answer:

Nicole is correct, since when she multiplied by 3, she cleared the x's, since one x was already negative, and the other one was positive. Michael is incorrect since when he multiplied by 2, he didn't realize that both y's were positive, so they didn't clear.

Step-by-step explanation:

Let's see what will happen if we do what Nicole says:

x+2y=7

-3x+4y=9

multiply the first equation by 3 on both sides

3(x+2y)=7(3)

3x+6y=21

-3x+4y=9

now let's add them.

10y=30

We can see that the x's are cleared, since one x is positive and the other is negative.

Now let's try what Michael says.

x+2y=7

-3x+4y=9

multiply first equation by 2

2(x+2y)=7

2x+4y=7

-3x+4y=9

now let's add

-x+8y=16

the y's aren't eliminated, since both of them are positive.

Nicole is correct, since one x is positive and another was negative, and when opposite numbers are added together, they  cancel out and equal zero.

Hope this helps!

Answer:

SAS

Step-by-step explanation:

Answer:

-3p3+ 5p2- 2p -p3 -8p2-15p

-3p3-p3+5p2-8p2-2p-15p

4p3-3p2-17p

Answer:

14 feet of wood

Step-by-step explanation:

Answer:

[tex]x = 2 \: cups[/tex]

Step-by-step explanation:

Step 1: Lay out the proportion.

[tex] \frac{ \frac{1}{3} \: cups}{16 \: brownies}= \frac{x}{96 \: brownies} [/tex]

Step 2: Multiply 1/3 cups by 96 brownies.

[tex] \frac{1}{3} \: cups \: \times \: 96 \: brownies \: = 32[/tex]

Step 3: Divide by 16 brownies.

[tex]x = 32 \div 16 \: brownies = 2 \: cups[/tex]

Answer:

[tex]\huge\boxed{\sf The\ co-efficient\ of\ x\ is\ -4.}[/tex]

Step-by-step explanation:

Slope = m = -4

Y-intercept = c = -7 ( Because that is the point where x = 0 )

Equation:

[tex]\sf y = mx+c\\\\y = -4 x+(-7)\\\\y = -4x-7[/tex]

So, The co-efficient of x is -4.

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

Answer:

6x - 4

Step-by-step explanation:

Perimeter is equal to double the length plus double the width, and if you use this to find perimeter, you would get that the perimeter = 2(2x-7)+2(x+5), which simplifies to 4x - 14 + 2x + 10, which simplifies to 6x - 4. That means that the rectangle's perimeter is 6x-4.

Answer:

5 + 4 = 9 5 × 4 = 20

the numbers are 5 and 4

the answer is 5 and 4

hope this helps!!

so sorry if its wrong!!

Love: Deku~ <3

Answer:

m=52

Step-by-step explanation:

Answer:

(-10)² = -10 x -10 = 100

- 10² = - (10 x 10) = - 100

Step-by-step explanation:

(-10)² = -10 x -10 = 100

- 10² = - (10 x 10) = - 100

Answer:

the second option

Step-by-step explanation:

[tex] \sin(theta) = \frac{opposite}{hypotenuse} [/tex]

[tex] \cos(theta) = \frac{adjacent}{hypotenuse} [/tex]

[tex] \tan(theta) = \frac{opposite}{adjacent} [/tex]

theta = 45°

hypotenuse = 9

opposite = x

[tex] \sin(theta) = \frac{opposite}{hypotenuse} [/tex]

[tex] \sin(45) = \frac{x}{9} [/tex]

[tex] \sin(45) \times 9 = x[/tex]

[tex] \frac{9 \sqrt{2} }{2} = x[/tex]

[tex]x = \frac{9 \sqrt{2} }{2} [/tex]

Answer:

50.2

Step-by-step explanation:

Answer:

50.24 should be correct, (2 * pi) * r.  With pi = 3.14 and radius = 8, we get 50.24.

Answer:

200n - 162.

Step-by-step explanation:

first trem a1 = 38

common difference d = 200

nth term = a1 + (n-1(d

= 38 + 200(n-1)

= 200n - 162

The explicit formula for arithmetic sequences is 200n - 162.

The sequence in which every next number is the addition of the constant quantity in the series is termed the arithmetic progression.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

The given sequence is 38, 238, 438, 638,

first trem a₁ = 38

Common difference d = 200

nth term = a₁ + (n-1(d

nth term = 38 + 200(n-1)

nth term = 200n - 162

To know more about arithmetic progression follow

https://brainly.com/question/6561461

#SPJ2

Answer:

[tex] - 14 = integer \\ 1.758 = rational[/tex]

plzz mark it as brainliest..

Answer:

I mean how can I answer this???????????????????????

Answer:

40

Step-by-step explanation:

s = 2;

h = 4

Surface area = 2s² + 4sh

                     = 2*2² + 4 * 2 * 4

                    = 2 *4 + 32

                    = 8 + 32

                  = 40 sq. units

Answer:

x=145

Step-by-step explanation:

There are two ways to solve:

-Vertical angles Theorem states that opposite angles are congruent, so x=145 degrees.

-Sameside angles are supplementary so:

35+x=180

Subtract 35 from both sides:

x=145

0.1

Have a amazing day!!

Answer:

1/10 and in decimal form, it would be 0.1

Answer:

yes

Step-by-step explanation:

Use substitution method

3(2)+14=2(10)

6+14=20

20=20

Hope this helps. Have a nice day you amazing bean child.

Answer:

x = -2

y = 5

Step-by-step explanation:

2x - 3y = -19  ---------------------------(I)

7x+ 7y = 21  -----------------------------(II)

Multiply equation (I) by 7 and equation (II) by 3.Then add and so y will be eliminated and you will get the value of x

(I)*7              14x - 21y = - 133

(II)* 3           21x + 21y = 63          {Now add}

                   35x          = -70

                                x = -70/35

x = - 2

Plug in x = - 2 in equation (I)

2*(-2) - 3y = -19

-4 -  3y  = -19

     -3y = -19 + 4

     -3y = -15

         y = -15/-3

y = 5