Mathematics High School

If the first term of a sequence is four and the common difference is -9. Find a40.

(Write your answer as a value without spaces ex. 678, -973, etc.)​

Answers

Answer 1

Answer:

an = a1 + d(n - 1)

Step-by-step explanation:

an = 4 + -9(40 -1)

an = 4 + -9(39)

Related Questions

A motorist travels 275 km in 5 hours. How far con he travel in 9 hours at the some.
Kilometers : Hours =Kilometers : Hours​

Answers

Answer:

he can travel 495 km in 9 hr

distance covered in one hr = 275\5

55

distance covered in 9 hrs =495

Solve the equation 3x = 9.5 Show and justify each step you take to solve the equation . 3x = 9 Write the equation 9 Divide each side by 3. x =​

Answers

Answer:

3x=9.5, you would divide 3 on each side to get x by itself, so (3x)/3=9.5/3, which would lead to be x=9.5/3 or x= 3 and 1/6th, 3 + 1/6

Step-by-step explanation:

2. Simplify (27) 2/3 x (125) 1/3​

Answers

Answer:

750

Step-by-step explanation:

Are / ?

Fraction?

The answer is 750
Use the calculator

helppp please reallly fasttt!!!

Answers

Answer:

Step-by-step explanation:

[tex]3^{2}+ 7^{2} = EF^{2}[/tex]

[tex]58=EF^{2}[/tex]

[tex]EF=\sqrt{58}[/tex]

The circumference of a circle is 32 cm which is the closest to the diameter

Answers

Given:

The circumference of a circle is 32 cm.

To find:

The diameter of the circle.

Solution:

We know that, circumference of a circle is

[tex]C=2\pi r[/tex]

It can be written as

[tex]C=\pi d[/tex]              [tex][\because d=2r][/tex]

Where, r is the radius of the circle and d is the diameter of the circle.

The circumference of a circle is 32 cm.

[tex]32=\pi d[/tex]

[tex]\dfrac{32}{\pi}=d[/tex]

[tex]\dfrac{32}{3.14}=d[/tex]

[tex]d\approx 10.19[/tex]

Therefore, the diameter of the circle is about 10.19 cm.

Question

Expand 7(11m-12)+6​

Answers

77m-84+6
77m-78
Hope I helped

Answer: 77m -78

Step-by-step explanation:

11x7=77

7 x -12= -84

77m -84

-84+6 = -78

77m-78

Help!!! I give CROWN T-T

Answers

Answer:

120, remember the angles have to add up to 180

Step-by-step explanation:

Answer:

60 because 30+30=60 and a triangle is 180° so 180-60= 120 and it's a line so 180-120=60 ifykyk

Which equation can be used to solve for x in the following diagram?

Answers

Step-by-step explanation:

B because the straight angle must be 180°

It is a supplementary angel so it’ll be b —> (3x + 12) + x = 180 since it needs to be equal to 180. Supplementary angels only add up to 180.

Describe the answer dont draw it out

Answers

Answer:

Heres what you do:

Plot a filled in, completlely black circle on the 2.

Make sure the line is going right, (-->) from the point

^^^ this is correct!

Helps me with this please !

Answers

40 degrees

Step-by-step explanation:

you add the 90 degree angle and the given angle and angles in a triangle add up to 180 so you subtract the sum from 180

Answer:

MD= 17.62 or 18

VD= 27.41 or 27

Step-by-step explanation:

Pleaseee help I need this done ASAP will mark brainless if correct!!

Answers

I believe its 1/2 because m always stands for slope for slope formula

A single card is drawn from a standard 52 card deck. Work out the probability of choosing "an ace". Give your answer in its simplest form.

Answers

Answer:

1/13

Step-by-step explanation:

Total cards = 52

No: of aces in the cards= 4

Probability = 4/52 = 1/13

I hope im right!!1

In ΔOPQ, p = 38 cm, q = 29 cm and ∠O=39°. Find the length of o, to the nearest centimeter.

Answers

Use law of cosines

o^2=p^2+q^2-2pqCos(C)

o^2=38^2+29^2-38*29Cos(39)

o^2=1444+841-1712.83

o^2=572.17

o=23.92

Say 24 cm

3x=72-3x
Guys what is the answer ?

Answers

Answer: x= 12

Hope that helps :)
3x = 72 - 3x

Move the 72 to the left side and the 3x to the right side.

-72 = -3x - 3x

Add the two -3x’s on the right side.

-72 = -6x

Divide by -6 on both sides.

12 = x

The answer is x = 12

what is the integral of 1/(x^2 + 2x + 10)​

Answers

Answer:

[tex]= \frac{1}{54}[{tan^{-1}\frac{x+1}{3}+\frac{3(x+1)}{(x+1) + 9} }] + C[/tex]

Step-by-step explanation:

We are to find the integral of  1/(x^2 + 2x + 10)​

An item is priced at $14.48. If the sales tax is 7%, what does the item cost including sales tax?

Answers

Answer:

$15.49

Step-by-step explanation:

14.48 x 0.07 = 1.0136

1.0136 + 14.48 = 15.4936 = 15.49

The point is located at (4,3)
. If we wanted to increase the value of the
x-coordinate
, the point would have to move (horizontally or vertically)
,

Answers

Answer:

We have to move horizontally. As Y is the vertical axis and x is the horizontal axis. If we need to increase the value of x coordinate we need to move horizontally.

what is the solution set to the inequality - 3x + 2 > 17

Answers

The answer would be x<-5

Explanation
You have to move 2 over to the 17 to get the x by itself so since it’s a positive 2, you would subtract 2 which would give you -3x>15. THEN you would divide the 15 by negative 3 which gives you -5 BUT since you are dividing by a negative you would flip the sign.
Hope this helped!!

How would you make $17.84. (Use the least amount of bills and coins.) *

Answers

Answer:

1 ten

1 five

2 ones

3 quarters

1 nickel

4 pennies

Step-by-step explanation:

Hope I helped! <3 :)

write
0.0000387 in standard form​

Answers

Answer:

[tex]3.84 \times {10}^{ - 5} [/tex]

The circle graph shows how Tremaine divided his time on the computer last week.

Tremaine used the computer a total of 30 hours last week. How many more hours did Tremaine use the computer to play games than to do research?

A. 1.5 hours

B. 20 hours

C. 6 hours

D. 7.5 hours

Answers

Answer:

A:1.5 hours

Step-by-step explanation:

all you have to do is figure out 5% of 30 which is 1.5

The required number of hours more, Tremaine uses the computer to play games than to do research is 6 hours.

What is the percentage?

The percentage is the ratio of the composition of significant value to the overall composition of significance value multiplied by 100.

Here,
As mentioned in the question Tremaine used the computer for a total of 30 hours last week.

So from the circle graph:
Hour spend on games = 25% of 30
                                  = 0.25 * 30

                                  = 7.5 hours

Hours spend on research = 5% of 30
                                        = 1.5 hours

Thus, the required number of hours more, Tremaine uses the computer to play games than to do research is 7.5 - 1.5 = 6 hours.

Learn more about percentages here:

brainly.com/question/13450942

#SPJ3

PLS HELP ILL GIVE BRAINLY!

Answers

Answer:

x=-1 y=3

Step-by-step explanation:

so next the equation equal so

-8X+3y=17

+8x+9y=19

make it so that the first equation y can eliminate second equation y

sorry ghee too lazy to type working out

y=3 is ur answer have a good day

What do you know about Mexico? 5 sentences

Answers

Mexico could be a nation with no memory and in this way unused all the time. Conventions are strengths of nature, and history is simply a story for excitement, for one cannot learn from it The same histories of debasement, the same stories of achievement, the story of the ones who accomplish enormity somewhere else proliferates.

{y=6x+14
{2x-y=2



thanks bud lol

Answers

y = 6x + 14

2x - y = 2

so
2x - (6x + 14) = 2

2x -6x - 14 = 2

-4x - 14 = 2

-4x = 2+14

-4x = 16

x = -4

y = 6(-4) + 14

y = -24 + 14

y = -10

(x,y) = (-4,-10)

A, B, and C are collinear, and B is in between A and C. The ratio of AB to AC is 1:3. If A is at (2, -6) and B is at (3, -1), what are the coordinates of point C?

Answers

Answer:

(4-1)

I think not for sure

Step-by-step explanation:

David rents DVDS from a company that changes a $7.00 monthly fee and $1.50 for each dvd rental. He ends up paying $20.50 for the month of june. The equation 1.5 x + 7 = 20.5 represents this situation. Solve this equation for x type the NUMER in the text box please help me!

Answers

1.5x + 7 = 20.5
First subtract 7 from both sides
1.5x = 13.5
Then divide both sides by 1.5
x = 9


Let me know in comments if you have questions

Help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

i am pretty sure it is A

Answer:

ye you have it correct

Step-by-step explanation:

it shows 2 gs fitting into 20

g=10 btw

PLS HELP
how many solutions does this system of equations below have?

y=8x+4
y=8x+3

Answers

There are to be exact only 2 ways to answer this equation because of the way math was made.

The area of a circle is 64 pi inches ^2
What is the circumference in inches expense your answer in terms of pie

Answers

Answer:

R=8cm

Step-by-step explanation:

help on math! thanks!

Answers

Answer:

A

Step-by-step explanation:

covert to slope intercept form

x-y=2

-y=-x+2

y=x-2

Answer: C

Step-by-step explanation:

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