please help me with math

Answer:

We start off with 21 as the first term. So a1 = 21

The common difference is d = -3 because we subtract 3 each time to get from one term to the other (eg: 21 to 18 is minus 3)

The nth term of an arithmetic sequence is found by using this formula

an = a1 + d(n-1)

let's plug in the values we have so far to get

an = 21 + (-3)(n-1)

an = 21 - 3(n-1)

an = 21-3n+3

an = -3n+24

Why do this? Well it's helpful so we can find any term in the formula we want. In this case, we want the 40th term. So just plug in n = 40 from here and you're done

an = -3n+24

a40 = -3*40+24

a40 = -96

pointing you to the answer of choice B) -96

Gabriel has 4 partners.

When you take the 4 and multiply it by 4, you get 16 where you'd take half of the 16 and add it to it. So you'd have 16 + 8 where it equals 24 and then add the original 4 and you get 28.

Answer:

Question about the triangle, what type of triangle is it?

Step-by-step explanation:

Answer:

8912

Step-by-step explanation:

don't use awnser plz

the answer Is 0.24

Step-by-step explanation:

2.1 times 4.4 is

9.24

3.6 divided by 0.4 is

9

9.24 - 9

= 0.24

Remeber guys, we need to use pemdos. In this case we need to do 1. Multiplication

2. Division

3. Subtraction

We cannot do subtraction or division first. We need to go by order.

Natural logarithm (redirect from LN(1+X))including: ln ⁡ ( 1 + x ) = x 1 1 − x 2 2 + x 3 3 − x 4 4 + x 5 5 − ⋯ = x 1 − 0 x + 1 2 x 2 − 1 x + 2 2 x 3 − 2 x + 3 2 x 4 − 3 x + 4 2 x 5 − 4 x + ⋱ {\displaystyle32 KB (5,254 words) - 16:48, 18 October 2021

Answer:

21 is a function but 20 is not

Answer:

20 no

21 yes

if you draw a line parallel with y axes

if it cut graph in two points or more than it's not function

Answer:

Hey I got you!!

Step-by-step explanation:

Main points made:

* 3/4 teaspoon for every 2 cups of milk

* Sally wants to know how many teaspoons are required for 3 cups of milk

In this situation I divided 3/4 by 2, which got me 0.375. Then I converted 3/4 to a decimal, which is 0.75. Next, I added 0.375 and 0.75 which equals 1.125. From there I converted 1.125 to a fraction.

My final answer was 9/8 or 1 1/8. Hope this helps! :)

Answer:

12 degrees

Step-by-step explanation:

it would be about 30 or 210

Step-by-step explanation:

..............

=> 3x + 4y = 12

Answer:

9 cups

If x represents the number of cups of dark chocolate needed for 60 candies, the proportion can be ...

 cups/candies = 3/20 = x/60

Multiplying by 60 gives ...

 x = 60(3/20) = 9

You need 9 cups of chocolate for 60 candies.

Answer:

143.4

Step-by-step explanation:

Answer:

8

Step-by-step explanation:

2(8-4)

PEMDAS says parentheses first

2 * (4)

Then multiply

8

Answer:

8

Step-by-step explanation:

2(8-4)

2(4)

8

Step-by-step explanation:

17×8=136

136×8=1088

sorry if it's wrong I actually have a flu and my brain ain't working sorry but please mark me the brainiest

Answer:

1 full piece

Step-by-step explanation:

there are 12 inches in a foot so there are 12/1 x 15/8 inches in 1 7/8 feet, which is:

22 1/2 inches

22.5 ÷ 12 = 1.875 pieces or 1 full piece

Answer:

Hi, I believe the volume of the rock would be 10 mL.

If the beaker originally had 20 mL of water and then the rock turned it to 30 mL, subtract 20 from 30 and you get 10mL

Hope this helps!!!

The volume of the rock is 10 mL as per the concept of subtraction.

To find the volume of the rock, we can use the principle of displacement. When the rock is placed in the beaker, it displaces a certain volume of water equal to its own volume.

The increase in water level from 20 mL to 30 mL represents the volume of the rock.

The volume of the rock = Final volume of water - Initial volume of water

Volume of the rock = 30 mL - 20 mL = 10 mL

Therefore, the volume of the rock is 10 mL. The rock occupies an additional 10 mL of space in the beaker when submerged in the water.

This principle of displacement is based on the fact that the total volume of water and the rock combined remains the same as the initial volume of water in the beaker. By measuring the difference in water levels before and after adding the rock, we can determine the volume of the rock.

To learn more about subtraction;

https://brainly.com/question/2346316

#SPJ3

Answer:

82/9

Step-by-step explanation:

Picture below

Step-by-step explanation:

9) y= -2x - (5/2)

10) y = -5 + (5/2)

Answer:

{x,y} = {2,-2}

Step-by-step explanation:

System of Linear Equations entered :

  [1]    7x + 3y = 8

  [2]    3x - 4y = 14

Graphic Representation of the Equations :

   3y + 7x = 8        -4y + 3x = 14  

Solve by Substitution :

// Solve equation [2] for the variable  x  

 [2]    3x = 4y + 14

 [2]    x = 4y/3 + 14/3

// Plug this in for variable  x  in equation [1]

  [1]    7•(4y/3+14/3) + 3y = 8

  [1]    37y/3 = -74/3

  [1]    37y = -74

// Solve equation [1] for the variable  y  

  [1]    37y = - 74  

  [1]    y = - 2  

// By now we know this much :

   x = 4y/3+14/3

   y = -2

// Use the  y  value to solve for  x  

  x = (4/3)(-2)+14/3 = 2

Solution :

{x,y} = {2,-2}

Answer:6=C 7=C

Step-by-step explanation:

The graph of the equations was plotted using geogebra graphing and attached.

Let x represent the hours weightlifting and y represent the hours doing cardio exercises.

Since he spend a maximum of 20 hours, hence:

x + y ≤ 20   (1)

Also, he spends at least 8 of those hours weightlifting, hence:

x ≥ 8          (2)

He wants to spend no more than 15 hours doing cardio exercises, this is:

y ≤ 15     (3)

The graph of the equations was plotted using geogebra graphing and attached.

Find out more at: https://brainly.com/question/17178834

Answer:

I'm not sure I understand but if you want more math to do look up Quizlet and do some of those tests

Answer:

Your missing stuff

Step-by-step explanation:

You are a missing way too many things these questions can not be answered but I'm gonna guess and say df is 17

Answer:

a) 2.083

b) 4.713

I hope this helps. :) ( I also multiplied them to check)

Answer:  A

Step-by-step explanation:

Answer:

27m^6 n^12

Step-by-step explanation:

Answer:

27m^6n^12

Step-by-step explanation:

3^3 = 27

m^2^3 = m^6

n^4^3 = n^12

Hence, it is

27m^6n^12 (the last option)

Hope this helps and be sure to have a wonderful time at Brainly! :D

Answer:

g(x)=3

Step-by-step explanation:

Answer:

26

Step-by-step explanation:

g(x) = 3x-1

f(x)= x+5

g(f(4)

plug 4 into f

f(4)

now apply x+5

f(4)=4+5=9

plug 9 into g

g(9)

now apply 3x-1

g(9)=3(9)-1

3 ×9= 27

27-1=26

hence the answer is 26

(sorry if I'm wrong I just finished this topic myself)

Answer:

about 24 people in the circle

Step-by-step explanation:

find circumfrence using pi r squared which is 94 and divide by 4 which is the distance between students

Answer:

x = 7

Step-by-step explanation:

Rearrange the equation to make x the subject.

Original:

7x + 3 = 52

subtract 3 from both sides

7x = 52 -3

7x = 49

Divide both sides by 7

x = 49/7

x = 7

Hello! The additive inverse of -2/5 is 2/5.

if you add -2/5+2/5, you will get 0, so these two numbers are opposites and additive inverses.

Hope this helps you!

~Just a joyful teen

[tex]SilentNature\\(GraceRosalia)[/tex]

Answer:

31 students

Step-by-step explanation:

The constant in the equation is $120 because it is the price the group paid to see the game

The variable is $7 because it depends on how many kids decide to eat snacks (s)

$337 is the total

120 + 7s = 337

Solve the equation:

7s=217

s=31