The first four terms of an arithmetic sequence are 7, 14, 21, 28... Calculate the sum of the first 50 terms.

Answers

Answer 1

Step-by-step explanation:

a = 7

d = 14-7 = 7

s(50) = n/2*[a+(n-1)*d]

         = 50/2*[7+(50-1)*7]

         = 8750


Related Questions

what is the mode of 250,100,75,200,150,100

Answers

Answer:

100

Step-by-step explanation:

because 100 showed twice more then the others

Answer:

To find the mode of this question. You look for the number that showed up the most out of the values given. In this case you answer is 100.

Step-by-step explanation:

helpppppppppppppppppppppppppppppp​

Answers

Answer:

-5/2

Step-by-step explanation:

rise/run or up and down/left and right

Answer:

-5/2. It's the answer.

Step-by-step explanation:

formula is m = (y2-y1)/(x2-x1)

what is the equation of the line that hasthe solution "-2" and 4

Answers

Answer:

First you need to find the slope:  (y2 - y1)/(x2 -x1) = (-4 -(-4))/(0-2) = 0.  So the line is horizontal, which means the y coordinate is constant and equal to -4, so the equation of the line is y = -4.

Step-by-step explanation:

since both points have a y value of -4 you could have jumped directly to y = -4

14 White shapes and black shapes
Some of the shapes are circles.
All the other shapes are squares
are used is a game
The ratio of the number of white shapes to the number of black shapes is 3:7
The ratio of the number of white circles to the sumber of white squares is 4:5
The ratio of the number of black circles to the number of black squares is 2:5
Work out what fraction of all the shapes are circles.

Answers

Answer:

1/3

Step-by-step explanation:

Check the attachment.

Evaluate the expression when a=4 and b=6?
8a-b

Answers

Answer: 26

Step-by-step explanation: Multiply first then subtract 8(4)-(6) = 32 - 6 = 26

Answer:

26

Step-by-step explanation:

8a-b

Evaluate or substitute

8(4)-6

32-6

26

Find each real root.

Answers

Answer:

Step-by-step explanation:

I'm assuming the 7 is the question number.

The cube root is -2. There is only 1 real root.

You could find it this way. ∛(-8) = ∛-2 * - 2 * - 2

The rule for cube roots when the number has 3 roots that are the same is to take one outside the ∛ sign and discard the other 2.

-2 ∛1 The cube root of one is one.

identify the postulate (SAS, ASA, SSS) / theorem (AAS) that proves the two triangles are congruent.​

Answers

Answer:

1) SAS

2) ASA

3) SSS

4) AAS

25 PTS Help pls
If a single card is drawn from a standard 52-card deck, what is the probability it is a diamond or a face card (Jack, Queen, or King)?
A. 11/26
B. 2/7
C. 1/4
D. 2/52

Answers

Using it's concept, it is found that the probability that the card is a diamond or a face card is given by:

D. 25/52

What is a probability?

A probability is given by the number of desired outcomes divided by the number of total outcomes.

A standard deck has 52 cards, of which 13 are diamond and 12 are face, hence:

p = (13 + 12)/52 = 25/52.

Which means that option D(25/52) is correct.

More can be learned about probabilities at https://brainly.com/question/14398287

What's the q1 and q2????

Answers

Answer:

Q1-298

Q2-422

Step-by-step explanation:

Q1-298 Q2-422 is the answer your looking for

If a florist uses 10 red roses in a bouquet , how many white roses did she use?

Answers

Answer:

2 white roses.

A dozen is 12.

12-10 red roses = 2 white roses

Step-by-step explanation:

Answer:

she used 2 white rose

Step-by-step explanation:

12 is a dozen so 12-10 is 2 white roses

Hope this helps :)

DARIO is a regular pentagon, RIP is an equilateral triangle, and EIOU is a square.

Answers

The area of the shaded region will be equal to the (area of the hexagon - area of pentagon) + (area of a square - area of equilateral triangle).

How to explain the shape?

From the complete question, the area of the shaded region 1 will be:

= Area of regular hexagon - Area of regular pentagon

The shaded region 2 will be:

= Area of a square - Area of equilateral triangle

Therefore, the area of the shaded region will be equal to the (area of the hexagon - area of pentagon) + (area of a square - area of equilateral triangle).

Learn more about triangles on:

https://brainly.com/question/17335144

SOMEONE PLEASE HELP ME WITH THIS!!
IMAGE DOWN BELOW!!
ILL GIVE YOU BRAINLIST ANSWER!!

Answers

Answer:

5.946 cm

Step-by-step explanation:

Using the Pythagorean Theorem, we know that in a right angle triangle to find the longest side we must use the equation a^2 = b^2 + c^2

A is the longest side while b and c are the other two sides

To find one side we must use

b^2 = a^2 - c^2

a squared = 6.9 squared - 3.5 squared

a^2 = 35.36

square root 35.36 to get a

a = 5.946427499

a (3 d.p.) = 5.946

Question Factor −1/4 out of −1/2x−5/4y.

Answers

Answer = -1/4 (2x + 5y)

-1/2 x - 5/4 y
=(-1/4 * 2x) + (-1/4 * 5y)
= -1/4 (2x + 5y)

Work out
64.89
% of
407.68
cm
Give your answer rounded to 2 DP.

Answers

Answer:

264.54 cm

Step-by-step explanation:

64.89% x 407.68 cm

Multiplying

0.6489 x 407.68 cm264.543552 cm⇒ 264.54 cm

If the population of Alaska in 2000
was 622,000 and 733,000 in 2020,
assuming exponential growth, what
would the population be in 2050?
[ ? ] people

Answers

The number of people by the year 2050 is obtained as 927915 people.

What is the population in 2050?

We know that population is an exponential growth problem in this case. We have to apply the formula;

P = Poe^rt

P = population at time t

Po = Initial population

r = population growth rate

t = time taken

Now;

We have to use the relation to find the growth rate as follows;

733,000 = 622,000 e^20r

733,000/622,000 = e^20r

1.178 = e^20r

ln(1.178) = 20r

r = ln(1.178)/20

r = 0.008

Now;

In the year 2050, we would have;

P = 622,000 e^50 * 0.008

P = 927915 people

Learn more about population growth:https://brainly.com/question/18415071

#SPJ1

Pls, help me!!!!!
thank you​

Answers

Answer:

62

Step-by-step explanation:

5x2 = 10

3x5=15

5x2=10

3x5=15

2x3=6

2x3=6

__________ (Add togther)

= 62 in

Hope this helps :)

What’s the domain and range?

Answers

Answer:

Domain: [0,4]

Range: [0,64]

Step-by-step explanation:

The domain is all x values the function ranges in and the range is all y values the function ranges in.

x is from 0 to 4.

y is from 0 to 64.

Domain: [0,4]

Range: [0,64]

We use brackets to show that we include the endpoints

How would you expand log412 so that it can be evaluated, given log43 ≈ 0.792? Log Subscript 4 Baseline 3 times log Subscript 4 Baseline 4 StartRoot a squared + b squared EndRoot log 3 + log 4 log Subscript 4 Baseline 3 + log Subscript 4 Baseline 4 log 3 times log 4

Answers

Answer: log412 = 1.792

Step-by-step explanation:

log412 = log4(3 x 4)

log4(3 x 4) = log4(3) + log4(4)

log4(4) = 1

log4(3) = .792

1 + .792 = 1.792

log412 = 1.792

The radius of a circle is 16 cm. Find its area in terms of pi

Answers

area is 804.25 if the radius is 16cm

Can someone please help me? This isn’t making sense to me.

Answers

Answer:

Answer is equation C

Step-by-step explanation:

They are converting Celsius temperature to Fahrenheit temperature.

F = 1.8C + 32

F = 1.8(0) + 32 = 32 Fahrenheit

F = 1.8(30) + 32 = 86 Fahrenheit

F = 1.8(100) + 32 = 212 Fahrenheit

Answer:

C) F = 1.8C + 32

Step-by-step explanation:

Hello! The easiest way to do this is to substitute the numbers from your table into your possible answer choices until you find numbers that make a true/correct statement.

For A:

F = 32C + 1.8 <== substitute any number for F and C from your table

32 = 32(0) + 1.8 <== multiply

32 = 0 + 1.8 <== add

32 = 1.8

This statement is false/incorrect

For B:

C = 1.8F + 32 <== substitute any number for F and C from your table

0 = 1.8(32) + 32 <== multiply

0 = 57.6 + 32

0 = 89.6

This statement is false/incorrect

For C:

F = 1.8C + 32 <== substitute any number for F and C from your table

32 = 1.8(0) + 32 <== multiply

32 = 0 + 32 <== add

32 = 32

This statement is true/correct

For D:

C = 32F + 1.8 <== substitute any number for F and C from your table

0 = 32(32) + 1.8 <== multiply

0 = 1024 + 1.8 <== add

0 = 1025.8

This statement is false/incorrect

As we can see, the only equation that makes a true statement is C.

Therefore, the correct answer is C.

Hope this helps!

How do I solve this I have no idea 9(x-3)*2= 36

Answers

Answer:

Your answer is 5  

Step-by-step explanation:

Tell me if im wrong

Answer:

0

Step-by-step explanation:  

Times -1=0                                                                                  

Write -1/3c^2(1.2d^2-6c) as a polynomial

Answers

Answer:

[tex]-\dfrac25c^2d^2+2c^3[/tex]

Step-by-step explanation:

[tex]-\dfrac13c^2(1.2d^2-6c)[/tex]

[tex]\implies -\dfrac13c^2 \cdot 1.2d^2+\dfrac13c^2 \cdot 6c[/tex]

[tex]\implies -\dfrac{1.2}{3}c^2d^2+\dfrac63c^2c[/tex]

[tex]\implies -\dfrac25c^2d^2+2c^3[/tex]

Citlali buys a pen for $1.50. She then bought 4 pieces of cardstock. Her
total came to $3.70.What was the cost of each piece of cardstock?

Answers

3.70-1.50=2.20
2.20 divided by 4 =.55

Answer = $0.55 per piece of cardstock

Answer: 55 cents

Step-by-step explanation:

3.70-1.50 is 2.20

2.20÷4 because she bought 4 cardstocks is 0.55 cents

You MUST show your working out!

Answers

Answer:

100.32

Step-by-step explanation:

First, we have to find 14% of 88
14% of 88 is = 88 x 14/100
                   = 12.32

Now we have to increase the number 88 by 14%, which means we have to add 14% of 88 (12.32) to the given number (88)  

88 + (14% of 88)

= 88 + 12.32

=100.32

Which of the following cosine functions has a period of 3π?

y = 3cos x
y = cos3 x
y = 1/3 cos x
y = cos 2/3 x

Answers

Answer:

y = cos 2/3 x

Step-by-step explanation:

Find the area of the shaded polygons. Pls help! Person will get brainlist.

Answers

Answer:

Triangle - 17.5

Trapezoid - 64

Step-by-step explanation:

Triangle  - This is because the triangle formula is h x b/2 and H is 7 and B is 5 so 5 x 7 is 35 divided by 2 is 17.5.

Trapezoid - a + b/2 times h and A is 6, B is 10 and H is 8 so 6+10 = 16 and 16/2 equals 8 and 8 x 8 =64.

50 7 x + 22 x=?
Please help

Answers

x= 4

both of the angles are the same degrees so you figure out the difference between 50 and 22 and take that divided by 7 to get x

50-22

28/7

=4

5. The relationship between temperature in degrees Fahrenheit and degrees Celsius is
shown in the graph below

Answers

I think it’s A hopefully

Find the missing number

Answers

I think the missing number is 281

please help asap tysm <3

Answers

Answer:

9:20 AM

Step-by-step explanation:

they spend 4 hours in total doing activities

We get this value by adding up all the time spent

1:30pm - 4 hours =

9:20 AM

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