Mathematics High School

Given the arithmetic sequence 9, 19, 29, 39... find a(n)

Answers

Answer 1

Answer:

first of look for their common difference which is subtract first term from second term 19_9=10

Then use the formula.

a+(n_1)d

9+(5_1)10

9+(4)10

9+40

n=49

Related Questions

math work pls help :)​

Answers

Answer:

SAS because there is only one angle but there are two sides

Thats the question please help!! emergancy

Answers

Answer:

a) 1/25

b) 4/25

Step-by-step explanation:

each of equal sides of an isosceles triangle is 4cm greater than its height .If the base of triangle is 24 cm ,calculate the perimeter and the area of the triangle​

Answers

Answer:-

192 cm²

Step by step explanation :-

Let us take the height be x , then its side = x + 4. Now half of base will be 12 cm .

According to Pythagoras Theorem :-

=> base² + perpendicular ² = hypontenuse ²

=> 12² + x² = (x+4)²

=> 144 + x² = x² + 16 + 8x

=> 8x = 144-16

=> 8x = 128

=> x = 128/8

=> x = 16 cm .

Hence the height of ∆ is 16 cm .So the area will be half the product of base and altitude.

= 1/2 * 16 cm * 24cm .

= 192 cm²

★ Hence the area of the triangle is 192 cm² .

Solve each problem. Round to the nearest tenth if necessary. Use 3.14 for π. What is the radius of a circle with a circumference of 15 cm? Show your work! I will be giving out brainliest!

Answers

Answer:

2.3

Step-by-step explanation:

First off, you start with the circumference formula which is 2(pi)r. Since we know our circumference, we can create the equation solving for r. so we have 15=2(pi)r. Now in order to solve for r, we need to transfer everything to the other side, meaning dividing by 2(pi). So 15/2(pi)=2(pi)r/2(pi). Since we are using 3.14 for pi, 3.14*2 is 6.28. 15/6.28 which is about 2.388 So the radius of the circle is 2.3 (rounded to the nearest tenth)

Round 638638638 to the nearest hundred.

Answers

Answer:

638638600

Hope that helps!

Step-by-step explanation:

Answer:

638638600

Step-by-step explanation:

f(x) = x2 – x + 11
g(x) = -x – 4
Find: (gof)(x)

Answers

Answer:

g(f(x)) = -x^2 + x - 15

Step-by-step explanation:

g(f(x^2 - x + 11) = -1 * (x^2 - x + 11) - 4 = -x^2 + x - 11 - 4 = -x^2 + x - 15

Please help i don't know
A textbook store sold a combined total of 312 history and sociology textbooks in a week. The number of sociology textbooks sold was 52 less than the number of history textbooks sold. How many textbooks of each type were sold?

number of history textbooks sold:
number of sociology textbooks sold:

Answers

208 history textbooks and 104 sociology textbooks

Please help (I will mark brainliest)!!!!!

Answers

We need to find the scale factor which so I will pick one side for both triangles

48/30= 1.6

1.6 is the scale factor

So now

25x1.6= 40

Therefore the answer is E) 40

8th grade math, please help.

Answers

Answer:

x=72 degrees

Step-by-step explanation:

180-108=72

it is 180 because a straight angle is 180 degrees.

then you subtract 108, which is an alternate interior angle, to get 72, which is an alternate exterior angle.

Answer:

x=72

Step-by-step explanation:

Since the whole angle is 180 you have to do 180-108 which you get 72.

Then since x and 72 are vertical angles they have to be the same so x=72

what is the slope of the line that passes through (3, 2) and (4, 11)?​

Answers

Answer:

9

Step-by-step explanation:

2-11 = -9

3-4 = -1

-9/-1 = 9

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

Answers

Answer:

The answer is 28............

will give brainliest if correct

Answers

Answer:

A

Step-by-step explanation:

For the function y = f(x), a reflection in the y axis is y= f(-x)

(-x)^3 = -x^3 so negate that term

(-x)^2 = x^2 so leave that as is

(-x)^1 = -x so negate that term too


PLEASE HELP FAST
What is the volume of this container?


2 in.
504 in
6 in.
72 in3
6 in.
8 in.
648 in
576 in
12 in.

Answers

Answer:

504 in3

Step-by-step explanation:

I did the I-Ready too.

The points (-1, r) and (2, 3) lie on a line with slope -1.Find the missing coordinate r

Answers

Answer:

r=0

Step-by-step explanation:

1) Place point (2, 3) on graph.

2) Use the slope of -1 to go left -1 and go down -1

3) Until you get to x value of -1

Solve the equations 2x + 2 = x + 9

Answers

Answer:

x=7

Step-by-step explanation:

Answer:

x = 7

Step-by-step explanation:

Given

2x + 2 = x + 9 ( subtract x from both sides )

x + 2 = 9 ( subtract 2 from both sides )

x = 7

Explain Combined Mean.​

Answers

Answer:

A combined mean is simply a weighted mean, where the weights are the size of each group. For more than two groups: Add the means of each group—each weighted by the number of individuals or data points, Divide the sum from Step 1 by the sum total of all individuals (or data points).

Answer: A combined mean is simply a weighted mean, where the weights are the size of each group. For more than two groups: Add the means of each group—each weighted by the number of individuals or data points, Divide the sum from Step 1 by the sum total of all individuals (or data points).

Step-by-step explanation:

which function has the steepest slope 2x-12 and y= 9- 3x

Answers

x+y =0

3x+y=16

x-y+4=8

2 of 6
calculator
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Given that AB is a line segment and the angle y = 47°,
work out the value of the angle marked X.
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Answers

Answer:

ddgklkmbxawryunnvxzfdszAaefgu

Help Please. Need answer immediately

Answers

Answer:

7.5 feet per second

Step-by-step explanation:

Answer:

I believe it is 7.5 feet per second

Step-by-step explanation:

Do 225 divided by 30

Number 4!!What is the cost of 80cm of copper pipe at €2 a metre?

Answers

Answer:

$1.6

Step-by-step explanation:

We need to find the cost of 80 cm of copper pipe at $2 a metre.

Cost of 1 metre = $2

80 cm = 0.8 m

It means,

0.8 m = $2 × 0.8

= $1.6

So, the cost of 80 cm of copper pipe is equal to $1.6.

% of 75 is 25
% of 4 is 7
% of 15 is 6

Answers

of means multiply! so-

x * 75 = 25 x = 33.3%

x * 4 = 7 x = 175%

x * 15 = 6 x = 40%

can someone tell me all the answers for 2 - 5/6

Answers

Answer:

1.17

Step-by-step explanation:

1.16666666667 ,, i guess you round it off

Answer 1.7
You have to round this is the original answer 1.6666 and then round the then nearest number which is 7
1.7

pls help plssssssss I really need answer​

Answers

Here is my answer, hope to help you

EFGH is translated 5 unite to the left and 2 units up.

What the coordinates of E'?

A. E' (6,-6)
B. E'(-1,1)
C. E'(-1,-3)
D. E' (9,-3)

Answers

Answer:

B. E'(-1,1)

Step-by-step explanation:

Change the X value of each of the points by -5, as this represents 5 units left.

Change the Y value of each of the points by +2, as this represents 2 units up.

For E:

X: 4 - 5 = -1

Y: -1 + 2 = 1

Coordinate: (-1,1)

It has to be b because it need up on -1,1

y= x + 3

y= -1/2x - 3

plot 2 lines on the graph​

Answers

Answer:

y = x + 3 is the Green Line

y = -1/2x -3  is the Blue Line

Find the value of each variable round your answer to the nearest 10th

Answers

Answer:

10 for x and y

Step-by-step explanation:

Because the triangle adds up to 30 deggrees

So... you want to take 4 out.

30- 4 = 24

Than...You want to divided 24 by 2.

And that equals 12

Than round 12's by tenth

Which equals 10

Expand the following expression - 2(3x-7)

Answers

Answer:

-6x+14

Step-by-step explanation:

Simplemente debes

multiplicar

2) Dorothy types 120 words per minute. How many words does Dorothy type in
1.75 minutes? *
150 words
180 words
200 words
210 words

Answers

Answer:

D (210)

Step-by-step explanation:

120 times 1.75 equals 210

Answer:

210 words

Step-by-step explanation:

120 x 1.75 = 210

2. Wpisz taką liczbę, aby rozwiązaniem równania była liczba 2.
a) 3(x - 1)-3 = b) 6y + 2(y + 1) - = 0 c) -t=t+2
3. Wpisz jakieś skomplikowane wyrażenie algebraiczne, tak aby rozwiązaniem
otrzymanego równania była liczba -1.
x3 + x +
= x2 - X+3
4. Uzupełnij przykłady równań odpowiednimi wyrażeniami algebraicznymi.
Przykłady równań sprzecznych:
Przykłady równań tożsamościowych:
1
1
1
2x + 1 =
1
1
1
1
1
1
+ 2
2x + 1 = 2(x - 1)+
x+6 = 1/3x+
2x + 4 =
1
1):2
1
1
1/3x + 4 =(
): 2
1
1
1
1

Answers

I didn’t understand but when I understand I will help you

Please give me an explanation! I really need help!!!

Answers

Answer:

Step-by-step explanation:

[tex]7\frac{a}{b}=7\\ \\ \frac{7a}{b}=7\text{ divide both sides by 7}\\ \\ \frac{a}{b}=1\\ \\ \text{Which means that a=b[/tex]

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