Mathematics High School

Given an arithmetic sequence described by the formula a= -2(n - 1) + 7 find a^28​

Answers

Answer 1

Answer:

-47

Step-by-step explanation:

Given the  arithmetic sequence described by the formula;

a= -2(n - 1) + 7

To get a28, we will substitute n = 28 into the expression

a28 = -2(28-1)+7

a28 = -2(27)+7

a28 = -54+7

a28 = -47

Hence a28 is -47

Related Questions

i need to find the square root of √16

Answers

the square root of 16 is 4

Answer:

4

Step-by-step explanation:

I don't know how to explain this other than use a calculator.

Hope that this helps!

Question Progress
Homework Progress
4/
Work out the size of angle x.
105
140

Answers

Answer:

Step-by-step explanation:

Sum of angles of a triangle = 180

x + (180 - 105) + (180 -140) = 180

x + 75 + 40 = 180

x = 180 -75 - 40

x = 65

NEED HELP ASAP 15 POINTS

Answers

Answer:

mean = 2

median = 2.5

Step-by-step explanation:

There are a total of 20 goals  (1*0 + 3*1 + 1*2 + 3*5 = 0 + 3 + 2 + 15 = 20)

There are 10 games, so 20/10 = 2 = mean

Threre are 5 games with goals greater than 2.5 and 5 games with goals below 2.5.  So the median is 2.5

Solve for x.

A) 13
B) 26
C) 11

Answers

Answer:

13

Step-by-step explanation:

Once again we are looking at inscribed angles and intercepted arcs. Like stated previously an inscribed angle is equal to half its intercepted arc

That being said we want to create an equation to solve for x

The equation would be 7x + 5 = 192/2

We now solve for x

step 1 simplify

192/2=96

now we have 7x + 5 = 96

step 2 subtract 5 from each side

5 - 5 cancels out

96 - 5 = 91

7x = 91

step 3 divide each side by 7

7x/7 = x

91 / 7 = 13

we're left with x = 13

Somebody pleassseee tell me if I’m doing this right or wrong Pleassee

Answers

Answer:

-4.5

Step-by-step explanation:

[tex]6x+5.5=3x-8\\[/tex]

[tex]6x-3x=-8-5.5[/tex]

[tex]3x=-13.5[/tex]

[tex]x=\frac{-13.5}{3}[/tex]

[tex]x=-4.5[/tex]

A principal of $3000 was
invested in a savings account
for 3 years. If the interest
earned for the period was
$450, what was the interest
rate?
A=P+Prt

Answers

Answer:

r = 0.05 or 5%

Step-by-step explanation:

3450 = 3000 + (3000 · r · 3)

450 = 9000 · r

450/9000 = r

r = 0.05 or 5%

What is the possible value of x?

Answers

Answer:

Step-by-step explanation:

3^2+x^2=6^2

9+x=36

36-9=27

sqrt 27

x=5.2

4x-2
x=5
can someone help me with this?​

Answers

Answer:

x= 5/2

Step-by-step explanation:

A rational number equivalent to 5/7 is​

Answers

5/7 is 5÷7

so

5÷7 = 0.7142857143

Let’s talk about the meaning Fractions: when you have a fraction it means to divide. So, When you have 5/7 you divide 5 and 7 because Fractions mean division.

5/7 = 0.71428571428 (Decimal NOT rounded)

A square has an area of 16 square ft what would be the measurement of its side

Answers

Answer:

4ft

Step-by-step explanation:

to get the area of a square you multiply the sides together so you just find the square root of the area

Answer:

4 feet would be the legth of the squares side

Step-by-step explanation:

t16 is the squares area and the area of a square is length X width, since all the sides of a square are equal, we can just take the square root of  16 which is 4 feet.

Can someone pleaseeee help and if you’re correct i’ll cc give brainlies

Answers

Answer:

i believe it is mice

Step-by-step explanation:

I don't know why they didn't just call it mouses

What percent of babies born in the United States are classified as having a low birth weight (< 2,500 g)? Explain how you got your answer.

Answers

Answer:

1.42%

Step-by-step explanation:

Infants born with a birth weight less than 1500 g are defined as very low birth weight (VLBW) infants. Approximately 3,952,841 US births were reported in 2012. Low birth weight (< 2500 g) was noted in 7.99% of the births, and VLBW was noted in 1.42% of all births.

The perimeter of a square is 36 centimeters.

What is the length of the diagonal of the square?

6√2 cm

9√2 cm

12√2 cm

18√2 cm

Answers

Second choice I think since a square has 4 sides and 9 times 4 is 36!
Answer is the second one

Plot a triangle with vertices located at (4, -2) (1, -2) and (4,5) on this coordinate plane To graph the triangle, select the places on the coordinate plane to plot the vertices. Your vertices will be connected in the order that they are plotted Here is the grid.​

Answers

Alvin and the chipmunks is the best show to ever ever exists prove me wrong

WHOEVER ANSWERS FIRST GETS BRAINLIEST


A mechanic had 4 1/2 gallons of motor oil at the start of the day. At the end of the day, only 5 pints remained.

How many pints of motor oil did the mechanic use during the day?


4 pt

13 pt

19 pt

31 pt

Answers

Answer:

19

Step-by-step explanation:

i took the quiz

For which distributions is the Median the best measure of center

Answers

Answer: The first graph demonstrates the best measure of center!

P.s if you feel this answer is satisfactory please mark it brainiest. I need it for my rank.

673,000 in numeric help!!

Answers

Answer:

huh? explain better

Step-by-step explanation:

what is the HCF of 3000 and 525 answer with process​

Answers

Answer:

The HCF is 75

Step-by-step explanation:

Here, we want to get the highest common factors of the two numbers

To do this, we have to write the numbers as the product of their prime factors

We have;

3,000 = 2 * 2 * 2 * 3 * 5 * 5 * 5

525 = 3 * 5 * 5 * 7

now looking at this, we can see that in both numbers, we can have 3 * 5 * 5 taken out as it is common to both numbers

This represents the highest common factor of the two numbers

and that is 75

please help me if u can i need a good grade on this please and thank you have a good day.

Answers

Answer:

[tex]yes (k) = \frac{1}{9}[/tex]

Need help with school

Answers

Answer:

∠A = 126°

Step-by-step explanation:

Supplementary angles are angles that add up to equal 180°

Given that ∠B = 54°, we can subtract 54° from 180°.

180° - 54° = 126°

∠A = 126°

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

What is the solution of the quadratic equation.
Equation: 2x + 7x - 5= 10

Answers

Step-by-step explanation:

2x+7x-5=10

2x+7x= 10+5= 15

2x ×9=15

2x =15-9=5

x=5/2=2.5

hope it helped

pls help!!!!!!!!!!!!!!!

Answers

Answer: The radius would be twelve

Step-by-step explanation:

The radius of a sphere would be 12 cm. By putting the value of volume we can find the radius of the sphere. The radius of a sphere would be 12 cm.

Please help me with this homework

Answers

Answer:

true

Step-by-step explanation:

It's hard for me to explain but let me know if it's right and if you need an explanation

What is the median for the numbers 1,2,3,4,5,6,7,8,9,10??


Thanks

Answers

Answer:

5.5

hope this helps

have a good day :)

Step-by-step explanation:

Help me on this one
IM CONFUSED!!!!!!!!!
WINNER GETS BRAINLEST

Answers

It’s 42.5 like the other girl sayied

Which ordered pairs represent points that belong to the straight line
y-5x-2 ... Show your work.
A) (-4,-22)
B) (4; 6)
C) (-4; 6)
D) (4;18)
no links and pls show ur work

Answers

I’m not sure if you mistyped but if you meant y=5x-2 then here is your answer:

So the equation is y=mx + b

-2 is your b meaning that it is your y intercept so you can plot it on the y axis (0,-2)

Then your slope is 5. Since your slope is positive, in order to go to the left side you can change both the denominator and numerator into negatives. So 5/1 = -5/-1

Slope = rise/run

So each time you go down 5, you go to the left once. So if you go to -4, then you will have to go down 4 times as well so 4 x 5 = 20, so you go down 20 points. You are already at (0,-2) so if you go down 20 points then you are at (-4,-22)

Therefore the correct answer is (-4,-22)

What is the standard angle of a reference angle of 30° in Quadrant III?
A. 210 degrees
B. 225 degrees
C. 150 degrees
D. 240 degrees

Answers

The answer is A: 210 degrees

Hari bought 5 apples at Re 1 and sold 4 apples at Re 1. Find the profit or loss in percentage.​

Answers

Step-by-step explanation:

C.P=5×1=Rs.5

S.P.=4×1=Rs.4

Loss=C.P.=S.P.

=Rs.5-Rs.4

=Re.1

loss%=loss/C.P ×100

=1/5×100%

=20%

Classify the object with the given side lengths as acute, obtuse, right, or not a triangle.
16, 21, 28
Right
Acute
Obtuse
Not a triangle

Answers

Answer:

We have to first see that the given lengths makes a triangle or not by using a+b > c in which a,b and c are

length of sides of a triangle lets check out

16 + 21 = 37 > 28

21 + 28 = 49 > 16

16+ 28 = 44 > 21

As because the statement fits correct in the lengths given so its a triangle

So we can say that the triangle is scalene by means of measurements

but cant be a right angle as by taking the pythagorean triplet

= a^2 + b ^ 2 = c^2

lets see if a=16, b = 21 and c = 28

So a^2 + b^2

= 256 + 441

= 697

but c^2

= 28^2 = 784

As 441 =/= 784

So The triangle lengths cant be a right angled triangle

So 1/2 of possibility is the traingle acute and 1/2 of the possibilty that the triangle is obtuse

Now you can find the correct triangle on the basis of acute or obtuse angle by drawing with given length of sides of triangle

Hope it helps

A boat is spotted in the water with an angle of depression of 25degrees from the top of a lighthouse that is 89 feet tall. How far away , to the nearest foot, is the boat from the lighthouse ?

Answers

Answer:

191 Feet.

Step-by-step explanation:

Answer: Your answer should be 191!

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