Mathematics High School

The first term of an arithmetic sequence is a1 = 2, and the third term is a3 = 6. Which of the following could be formula(s) for the sequence? Select all that apply.

A. an = 2n
B. an = 2n + 2
C. an = n + 2
D. ​​an = an − 1 + 2; a1 = 2

Answers

Answer 1

Answer:

A

Step-by-step explanation:

an=2(1)=2

an=2(3)=6

Related Questions

What is 4/9 x 5/7 x 1/2

Answers

Answer:

0.16

Step-by-step explanation:

4*5*1=20

9*7*2=126

20/126=10/63

Answer:

10/63

Step-by-step explanation:

First, let's solve 4/9 * 5/7. Multiply the numerator first- 4*5=20. The denominator is 9*7=63. So, this equals 20/63. Now we need to find 20/63 * 1/2. We can cancel out the 2 on the denominator and divide 20 on the numerator by 2. So, you get 10/63 * 1/1, which is 10/63.

Write the equation of line of the line that passes through the point (5, 6) and a slope of 2

Answers

Y=2x-4 should be the answer

If y varies directly with x, and y = 72 when x = -8, what is y when x = -6

Answers

Answer:

y=72

Step-by-step explanation:

the step by step is in the attachment above

Help please need the answer before 2:00

Answers

Answer:

y = (10/7)x

Step-by-step explanation:

Ok so this is a hard question but I believe the answer is y = (10/7)x

What is x/-3+20=30? Can someone pls help me

Answers

Answer:

x=510

Step-by-step explanation:

You can first combine like terms to get x/17=30

The inverse operation of division is multiplication so you can multiply by 17 on both sides to get your final answer: x=510

Find the measure of MN. please help!!!!

Answers

Given:

A circle with center O.

[tex]m\angle MOP=45^\circ, m\angle PON=85^\circ[/tex].

To find:

The measure of arc MN.

Solution:

We know that,

[tex]m\angle MON=m\angle MOP+m\angle PON[/tex]

[tex]m\angle MON=45^\circ+85^\circ[/tex]

[tex]m\angle MON=130^\circ[/tex]

The central angles in equal to the measure of the corresponding arc.

[tex]Arc(MN)=m\angle MON[/tex]

[tex]Arc(MN)=130^\circ[/tex]

Therefore, the measure of arc MN is 130 degrees.

A house is losing value at a rate of 5.4% per year. In 2009, the house was worth $331,000. Find the value of the house in 2021.

Answers

Answer:

$169803

Step-by-step explanation:

Given data

rate of decrease = 5.4%

time = 2009-2021= 12years

P=  $331,000

Let us apply the compound interest formula

A=P(1-r)^t----------------note the minus sign because this is a decrease

A= 331000(1-0.054)^12

A= 331000(0.946)^12

A= 331000*0.513

A=$169803

Hence the value in 2021 is $169803

​

21x+6y=42
7x+2y=14
​

Answers

For this case we have the following system of equations:

We multiply the second equation by -3:

Thus, we observe that the second equation is equivalent to the first, if we add both we get:

The equality is fulfilled. The lines are on top of each other.

Answer:

Infinite solutions

infinite solutions

hahqjwjwowowowowk

the solution to the equation?

Answers

x=5
add like terms :)

Mr. Bayless invests $3500 in a savings plan. The savings account pays an
annual interest rate of 4.75% on the amount he put in at the end of the
year. How much will Mr. Bayless earn if he leaves his money in the savings
plan for 8 years and how much money will be in his savings plan at the end
of 8 years?

Answers

Answer:

Interest = $1330

Amount = $4830

Step-by-step explanation:

Given

Principal = $3500

Rate = 4.75%

Time T = 8 years

Interest =PRT/100

Interest = 3500*4.75*8/100

Interest = 35*4.75*8

Interest = $1,330

Hence the interest earned by Mr. Bayless is  $1,330

Amount after 8years = Principal + Interest

Amount after 8years = 3500+1330

Amount after 8years = $4830

Hence the amount after 8years is $4830

Use the distributive property to find the equivalent expression.
4(2 + 3v) = +

Answers

Answer:

8+12v

Step-by-step explanation:

x - y = -2
4x - y = 4

Answers

ExplanationGiven the system of equations.

[tex] \begin{cases} x - y = - 2 \\ 4x - y = 4 \end{cases}[/tex]

Use the elimination method as it is faster. We have to eliminate the y-term. (You can eliminate the x-term but it takes longer than eliminating y-term.)

Simply multiply the negative one in one of the equations.

[tex] \begin{cases} - x + y = 2 \\ 4x - y = 4 \end{cases}[/tex]

We can finally eliminate the y-term by adding both equations.

[tex]( - x + 4x) + (y - y) = 2 + 4 \\ 3x + 0 = 6 \\ 3x = 6 \\ x = \frac{ 6 }{3} \longrightarrow \frac{ \cancel{6}}{ \cancel{3}} = 2 \\ x = 2[/tex]

Substitute the value of x in any given equations. I will substitute in the first equation.

[tex]x - y = - 2 \\ 2 - y = - 2 \\ 2 + 2 = y \\ 4 = y[/tex]

Check the answer by substituting the value of x and y in both equations.

First Equation

[tex]x - y = - 2 \\ 2 - 4 = - 2 \\ - 2 = - 2 \longrightarrow \sf{true} \: \: \green{ \checkmark}[/tex]

Second Equation

[tex]4x - y = 4 \\ 4(2) - 4 = 4 \\ 8 - 4 = 4 \\ 4 = 4 \longrightarrow \sf{true} \: \: \green{ \checkmark}[/tex]

Hence, the solution is (2,4).

Answer

[tex] \begin{cases} x = 2 \\ y = 4 \end{cases}[/tex]

Coordinate Form

[tex](2,4)[/tex]

Elliot was trying to factor 6z^2-18. He found the greatest common factor of these terms was 6.

Answers

Answer:

6(z^2-3)

Step-by-step explanation:

6z^2-18=6(z^2-3)

last question please som1

Answers

Answer:

898/8×41=4602.5

Step-by-step explanation:

I HOPE THIS WILL HELP YOU KEEP WORK HARD FOR STUDIES

The table represents a linear function. The rate of change between the points (–5, 10) and (–4, 5) is –5. What is the rate of change between the points (–3, 0) and (–2, –5)?

x
y
–5
10
–4
5
–3
0
–2
–5
–5
Negative StartFraction 1 Over 5 EndFraction
One-fifth
5

Answers

Answer:

use the slope formula y2-y1/x2-x1 and you should get -5-0/-2+3= -5 which means the rate of change should be 5

Answer:

5

Step-by-step explanation:

At Jonathan's school, there are 30 seventh graders participating in the school play. Of the students in the seventh grade, 60% are not participating in the school play. How many seventh graders at Jonathan's school are not participating in the school play?

Answers

Answer:

75

Step-by-step explanation:

If 30 students represent 40% of the class, we can divide 30 by .40 to get 75.

SOLVE THE INEQULITY 4X-7<5

Answers

Step-by-step explanation:

the answer is

4x-7<5

4x<12

x<3

x< 3. move the -7 over to the right by adding to both sides, and you will have 4x<12. get x by itself by diving both sides by 4, and get x<3

Find the perimeter of the following figure:

a. 3a2+ 22a + 35
b. 8a + 24
c. 4a + 12
d. 3a2 +22a + 12

Answers

Answer:

B

Step-by-step explanation:

8a+24

please help, ill give you brainly :)

Answers

1 the answer is e
2 the answer is c
3 the answer is d
4 the answer is a
5 the answer is b

Camila drew a triangle with a side that is 24 inches long and a side that is 18 inches long. Which of the following could be the length of the third side of the triangle that Camila drew? Select THREE that apply

A
42 inches

B
40 inches

C
18 inches

D
7 inches

E
6 inches

F
5 inches

Answers

Answer:

The answer is a b and there is one more but I don’t know it I’m sorryyyy

Step-by-step explanation:

what is the value of x? 135° 95°

Answers

Answer:

50

Step-by-step explanation:

Answer:

40

Step-by-step explanation:

180-135=45

45+95=140

180-140=40

(4 + 2n) + (513 + 2).

Answers

Answer:

2n + 519

Step-by-step explanation:

Hope this helps! :)

Good luck♥

Which of the triangles are right triangles?​

Answers

Step-by-step explanation:

1 is a right triangle I know this because a right triangle is a triangle which one of the angles is a 90 degree angle

Answer:

Triangles 1,2,3, and 4 are all right triangles

10-x=5
What is X???I need help

Answers

10-x =5

-x= 5-10

-x = -5

x= 5

Answer : x=5

Answer:

what the other person said

Step-by-step explanation:

What is an equation of the line that contains the point (0, -5) and a slope of 1/4

Answers

Answer:

y=1/4x-5

Step-by-step explanation:

Answer:

y = 1/4x - 5

Step-by-step explanation:

y = mx + b is the equation of a straight line.

m = slope, b = y intercept. (y intercept is the point where the line of the graph crosses the y axis)

(0, -5) is the y intercept (if you were to graph this point, it would be on the y axis, fitting the previous description)

the slope is 1/4

replace each variable in the equation, and you get:

y = 1/4x - 5

x 2x=27 when y=9 and z=2​

Answers

There’s no y or z within the problem though :/ only x

jeffys law whats 2+2

Answers

Answer:

b

Step-by-step explanation:

needed the correct answer

20 points

Answers

Answer:

30

Step-by-step explanation:

pretty sure it is that

Which factors composed the least common denominator of for this difference?
​

Answers

Answer:

-2x, (x+6), and (x-2)

I got this right on edmentum.

Step-by-step explanation:

Find the solution to the system: x=2y-7 and 4x+y=71

Answers

4*(2y-7)+y=71

8y-28+y=71

9y=71+28

y=99/9

So y=11

Again putting value of y in first equation

x=2*11-7

x=22-7

x=15

So value if x is 15 and y is 11
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