write an equation to represent the N'th term of the sequence (2,-1.-4,-7,...)

Answer:

1) 7 in

2) 11x=-7

3)2y - 7 + 3y = 5

4) i DONT'KNOWN

Step-by-step explanation:

1)

step 1

the length of the rectangle is 1 inch less than twice its width ( in other words , you have to subtract  1 to twice the width to get the length)

Let

L represents the length

W represent the width

Hence

Twice width= 2w

Now , replace

L=2w-1 equation (1)

Also

The perimeter =40 inches

[tex]perimeter= 2(L+W) 40=2(L+W) equation (2)[/tex]

Step 2

Solve for w

Replace equation (1) in equation (2)

[tex]40=2(L+W) equation (2)\\40=2((2W-1)+W)\\40=2(3W-1)\\40=6W-2\\Add 2 in both sides\\40+2=6W-2+2\\42=6W\\Divide both sides by 6\\\frac{42}{6}=\frac{6W}{6} \\7=W[/tex]

so ,the width is 7 in.

2) Given the equations

[tex]x+5y=3\\2x-y=-2[/tex]

The  first step is to multiply the second equation by 5 (both sides of the equation)

[tex]5(2x-y=-2)\\5(2x-y)=5.(-2)\\5.2x-5.y=-10\\10x-5y=-10\\[/tex]

Next is to add both equations

x+5=3 +10x-5y=-10 = 11x+0y=-7

The result is 11x=-7

3)[tex]x+3y=5\\x+7=2y[/tex]

To make a substitution for x using the second equation in the first equation you :

1. solve for x the second equation

Subtract 7 in both sides of the equation:

[tex]x+7-7=2y-7\\x=2y-7\\[/tex]

2.Substitute the x in the first equation for the value of x you get in step 1 :

[tex]2y-7+3y=5[/tex]

PLEASE MARK ME AS BRAINLIEST

Answer:

25 degrees

Step-by-step explanation:

A right triangle is considered 90 degrees, so subtract 90 degrees by 65 degrees.

90 - 65 = 25

Hence, angle A equals 25 degrees.

Answer:

148°

Step-by-step explanation:

the angles are equal

Answer:

Addition-

(9x+27)

Subraction-

(x-63)

Multiplication-

(20x-810)

Division-

(1.25x-0.4)

Step-by-step explanation:

Answer:

Any two factors of 18 2 ,3

Answer: 2(4 + x)

Step-by-step explanation:

i just multiplied across the parentheses. we can rule out the first option, because it would multiply out to be 8 + 4x.

the second option is the one that i calculated second, so i knew that i could rule out the last one my default.

just for kicks, if we multiplied the third option, it would come out to 8 + 4x.

Answer:

I think it's 6 kids absent

Step-by-step explanation:

Hope this helps

Answer:

c. 51 degrees is the missing angle.

Answer:

The coffee is $3 or less

Step-by-step explanation:

Set up an inequality where c is the cost of one coffee:

17.50 [tex]\geq[/tex] 5c + 2.50

Solve for c:

17.50 [tex]\geq[/tex] 5c + 2.50

15 [tex]\geq[/tex] 5c

3 [tex]\geq[/tex] c

So, the coffee is $3 or less

Answer:

(3,6) or x= 3 and y= 6

(-6,-3) or x= -6 and y= -3

Answer:

8

Step-by-step explanation:

  9 |08|

       72

   -    0

        72

-

         72

            00

Answer:

300?

Step-by-step explanation:

Answer:

nicee cat

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

The second graph, which represents Table B, represents an exponential function.

Mathematical functions with exponents include exponential functions. f(x) = bˣ, where b > 0 and b 1, is a fundamental exponential function.

Let table A represents the first graph.

x: 0, -1, 1, 2, -2, 3, -3.

y: 0, -1, -1, -4, -4, -6, -6.

And table B represents the second graph.

x:-4, -3,-2.75, -2.  

y: 2, 4, 6, 10

To determine which graph represents an exponential function, we need to recall the properties of exponential functions. An exponential function is a function of the form y = a^x, where a is a constant greater than 0 and not equal to 1.

Looking at table A, we can see that the y-values do not appear to follow an exponential pattern. For example, the y-values for x = 1 and x = -1 are both -1, but the y-value for x = 2 is -4. This is not consistent with the pattern of an exponential function.

Looking at table B, we can see that the y-values do appear to follow an exponential pattern. The y-values increase rapidly as x increases, which is consistent with the pattern of an exponential function. To confirm this, we can calculate the ratio of consecutive y-values:

For x = -4 and x = -3, y increases by a factor of 4/2 = 2.

For x = -3 and x = -2.75, y increases by a factor of 6/4 = 1.5.

For x = -2.75 and x = -2, y increases by a factor of 10/6 = 1.67.

These ratios are not exactly the same, but they are approximately equal to each other. This is consistent with the pattern of an exponential function, where the ratio of consecutive y-values is constant.

Therefore, the second graph, which represents Table B, represents an exponential function.

To learn more about the exponential function;

https://brainly.com/question/14344314

#SPJ7

Answer:

Wouldn't it be A because the spinner has a 1/8th of a chance to land on a number

Step-by-step explanation:

Answer:

− 4 8 ²  − 1 0 + 3

Step-by-step explanation:

the first one

Answer:

Answer: B'(-5,2)

Step-by-step explanation:

Rotations

When rotating a point B(x,y) 90 degrees counterclockwise about the origin it maps to an image point B'(-y,x).

The image shows a figure formed by points ABCD. The coordinates of B are B(2,5).

This point will be rotated 90 degrees counterclockwise about the origin, thus the coordinates of the image point B' are B'(-5,2).

Answer: B'(-5,2)

Answer:

(0, -1); maximum

Answer:

Kayla

Step-by-step explanation:

Vertical lines are always undefined because if your answer has to be divided by zero, the answer is an undefined operation.

Horizontal lines always have the slope of zero!

Answer:

The answer is below

Step-by-step explanation:

The equation of a straight line is given by:

y = mx + b; where y and x are variables, b is the y intercept (i.e. value of y when x is zero), m is the slope of the line.

The slope of a line passing through the points [tex](x_1,y_1)\ and\ (x_2,y_2)\ is:[/tex]

[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Let the point where the two lines intersect be the origin (0, 0).

Line 1 passes through (0, 0) and (8, 5). Hence:

slope of line 1 = [tex]\frac{y_2-y_1}{x_2-x_1}=\frac{5-0}{8-0} =0.625[/tex]

Line 2 passes through (0, 0) and (5, 8). Hence:

slope of line 2 = [tex]\frac{y_2-y_1}{x_2-x_1}=\frac{8-0}{5-0} =1.6[/tex]

Answer:

sixteen divded by the sum of x and 4

Step-by-step explanation:

Hey there!

In order to do 16 divided by (x+4), you can first do 16/x + 16/4. Then, simplify 16/4, and then the answer to the question is 16/x + 4.

Hope this is what you were looking for! Let me know if you need more help! Good luck and have a great day!

Step-by-step explanation:

12x-12x-8=-8

0=0

I think,no solution

Answer:

10

Step-by-step explanation:

Means back the numbers into multiples of several small numbers

Like:; 1. We take LCM of 40

Just break into multiples of small number

40= 2×2×2×5

2. We take LCM of 50

50= 5×5×2

So LCM for 100 is 2×2×5×5

after that see the pairs in the LCM like 2×2 or 3×3 or 4×4(same numbers)

Then write the the single number in place of two multipled numbers

Like:; 2×2 is written as 2 // 3×3 is written as 3

So we can write 100 into 2×2×5×5 and then after selecting pairs (2×2)×(5×5)

write pairs in single number 2×5

And so we get 2×5=10

So we find root of 100 that is 10

Answer:

-2/5 and 3/2

this is the answer for your question i probably send it to late for your answer but i hope it helps

Answer:

I believe the answer is B,

explanation:

Well,  the others are exactly alike, the first answer is just the two numbers flipped, the third is where multiplication is needed, so (2 x m^3) + (2 x 2) = 2m^3 + 4. and the final one is m^3 plus itself which equals to 2m^3 + 4.

Answer:

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