The organizers of the concert arranged 390 chairs in a row so that there were 18 chairs in the first row and 42 chairs in the last row, and the number of chairs in the rows forms an arithmetic progression. How many chairs were placed in rows, and how many chairs in each subsequent row are more than the previous one?

Answers

Answer 1

Answer:

4

Step-by-step explanation:


Related Questions

the length of a chord of a circle is 24 cm long and is 5 cm away from the center of the circle what is the radius of the circle​

Answers

Answer:

13

Step-by-step explanation:

radius of the circle​ (r) = √12²+5² = √169 = 13

please answer asap I'll mark brainliest​

Answers

Answer:

$3200

Step-by-step explanation:

First divide 40,000 by 100, which givse you 400

Now multiply the 400 by 8, which mulitplies to 3200.

Answer:

8% as a decimal is .08

simply multiply the 40,000 by .08.

40000 x .08= 3200

REALLY TOUGH QUESTION, PLZ HELPPPPPPP!!!!!!!!!!!!!!!!!!!!!!!!









Whats 9+10

Answers

Answer:

21

Step-by-step explanation:

na na jk 19

100 POINTS AND BRAINLIEST!! Please answer the last 2 and SHOW UR WORK!
THANK YOU :D

Answers

Answer:

p=$20000

t=?

rateR =15%

d=20000/2=10000

Step-by-step explanation:

we have

d=p(1-r/100)^t

10000=20000(1-15/100)^t

10000/20000=85/100^t

1/2=0.85^t

sorry. i did not get answer after this.

Please answer and thank you

Answers

5.945 is the answer, can i get brainliest
5.945 your welcome :)

How many times smaller is 2 × 10 to the negative 8th power than 4 × 10 to the negative 7 power?
A. 20
B. 200
C. 0.2
D. 2,000

Answers

Answer:

A. 20

Step-by-step explanation:

How many times smaller is 2 × 10⁻⁸  than 4 × 10⁻⁷ ?

Rewrite the numbers with the same power of 10:

2 × 10⁻⁸ and 40 × 10⁻⁸

Divide the second number by the first, cancel the powers as they are same:

40/2 = 20

Correct option is A

The values are

2×10-⁸ and 4×01^{-7}

Divide to find how many times smaller

4/2×10^{-7+8}2(10)20times

Simplify the following expression by combining like terms
4 + 5x + 2 =

Answers

Answer:

5x + 6

Step-by-step explanation:

4 + 2 is 6 and there is no other number with x so you leave the 5x alone

PLEASE HELP!!! 100 points!!!

Suppose that baby grand piano cost $8000 and looses 15%
in value each year. What would be the value of the piano in
12 years? Round your answer to the nearest hundred.
A.) $1137.93
B.) $1274.88
C.) $1078.44
D.) $5780.00

Answers

Answer:

A

Step-by-step explanation:

If it loses 15% of its value every year, then each subsequent year will be worth 85% of the previous year. If we think of this as a geometric series, then the worth would be 8000(.85^t) where t is years after the first year. If you plug in 12, then it's 1137.93.

Answer:

1137.93 is the answer

Step-by-step explanation:

a:b = 4:3 b:c =2:7 What is the ratio a:c

Answers

Answer:

4:7

Step-by-step explanation:

a:b:c=12:6:21

Factorize the following:
-x-y=

Answers

-(x + y)
Step by Step Explanation

Can someone draw me a doodle monster? I will give brainiest

Answers

Answer:

Step-by-step explanation:

will give brainliest to the person who solves all 3 :)

Answers

can u type out what the answer says i’m having a hard time reading it

ј
m
4
3
12 9
20
15
Write an equation to describe the relationship
between j and m.

Answers

Answer:

Step-by-step explanation:

M = ¾J

If you look at the numbers M is always 3/4 of J so the equation is M = ¾J

HOPE IT HELPED YOU

geometry : A triangle has two sides of length 14 and 2. What is the smallest possible whole-number length for the third side?

Answers

Answer: 7

hope this helps!!

The low temperature for the morning is -3.9°F. If the temperature rises to 24°F in the afternoon, what is the change in temperature?

Answers

Answer:20.1 will be the temp

Step-by-step explanation:

All you do is add -3.9 and 24 together to get your answer

An electric car can travel at top speed for 107 km on 5 h charging time. If the car died after just traveling 65 km at top speed, how long a charge could it have held?

A.) 4h B.) 2.5h C.) 3h D.) 3.5h

Answers

9514 1404 393

Answer:

  C.)  3 h

Step-by-step explanation:

If you assume the distance is proportional to the charge time, then ...

  x/5 = 65/107

  x = 5(65/107) ≈ 3.04

The car may have held about a 3-hour charge.

Estimate the percent using decimals.
48% of 400

Answers

Step-by-step explanation:

getcalc.com's fraction to decimal calculator to find what's an equivalent decimal for the fractional number 48/400.

50/400 0.125 12.5%

49/400 0.1225 12.25%

48/400 0.12 12%

47/400 0.1175 11.75%

Answer:

fraction to decimal calculator to find what's an equivalent decimal for the fractional number 48/400.

0.12 is a decimal and 12/100 or 12% is the percentage for 48/400.

Step-by-step explanation:

A fraction consists of two numbers and a fraction bar:

48/400

The number above the bar is the numerator: 48

The number below the bar is the denominator: 400

Divide the numerator by the denominator to get fraction's value:

Val = 48 ÷ 400

Introduction. Percent, p%

'Percent (%)' means 'out of one hundred':

p% = p 'out of one hundred',

p% = p/100 = p ÷ 100.

Calculate fraction's value.

Divide the numerator by the denominator to get fraction's value:

48/400 =

48 ÷ 400 =

0.12

Note:

100/100 = 100 ÷ 100 = 100% = 1

Multiply a number by the fraction 100/100,

... and its value doesn't change.

Calculate the percent value:

0.12 =

0.12 × 100/100 =

(0.12 × 100)/100 =

12/100 =

12%;

Hope it is helpful...

A container contains 3 yellow, 2 orange, and 4 pink roses. Without looking, if James chooses a rose from the container, what is the probability that James will select an orange rose?

Answers

Answer:

Orange rose = 2/9

Step-by-step explanation:

In order to find probability of picking one item, you add all the possible things you could choose. So, 3+2+4 equals a total of 9 outcomes, and that would be your denominator for your fraction of probability. From there it's really easy. Just put the amount of things your trying to find the probability for in the numerator spot.

Ex.

There are 9 total roses so that would be the denominator (?/9)

To find out the probability for picking an orange rose, you'd put the 2 in as the numerator because that is the total number of orange roses you have (2/?)

Then just put the two together (2/9).

What is the right answer I do t know it

Answers

Answer:

the answer to what?

Step-by-step explanation:

Twins were born at a hospital, and each weighs the same amount. The total weight of both babies is 12 pounds 14 ounces. How many ounces does one of the twins weigh?

Answers

Answer:

7 ounces

Step-by-step explanation:

12 pound 14 ounces divided by 2 gives 6 pounds and 7 ounces so ur answer is 7 ounces

Which is the slope of the line that passes through the points (2, 8) and (4, 6)?​

Answers

Slope: (y2-y1)/(x2-x1)
(6-8)/(4-2) = -2/2 = -1
The slope is -1

Answer:

Step-by-step explanation:

The slope would be -1

MULTIPLE CHOICE
Question 10
Liam wants to treat some friends to lunch. He has $50 and knows that lunch will cost $8 per person. For how many people can Liam buy lunch?
A
Liam can buy lunch for 7 or fewer people, including himself.

B
Liam can buy lunch for 7 or more people, including himself.

C
Liam can buy lunch for 6 or fewer people, including himself.

D
Liam can buy lunch for 6 or more people, including himself.

Answers

Answer:

C

Step-by-step explanation:

8 x 6 would equal 48, which results in not having enough money to buy lunch for more people.

Answer:

the answer should be c

Step-by-step explanation:

let's do a equation for this problem.

8x = 50

/8     /8

  x = 6.25

x represents the amount of friends. we divide 8 by both sides to isolate x by itself.

since the final result gives us a decimal, we have to round it to the nearest whole number. it's not possible to have a decimal amount of friends. it should be 6. it cannot be 7 if you are wondering because 7 is bigger than 6.25. there's no way there can be 7 friends when there is a limit amount of 6. therefore, the answer is c.

I need help with the first part I will give brainliest

Answers

Answer:15 candy bars are solddd

Step-by-step explanation:

Answer:

I believe the answer is $3.50

Step-by-step explanation:

1. You can see that 2 candy bars (x axis) sold result in $7 being spent (y axis).

2. To get how much the band makes for selling 1 candy bar, you divide the $7 by two.

If someone could answer the second part that would be awesome thanks, no spam please

Answers

Answer:

c

Step-by-step explanation:

m<4 and m<3 is a straight angle. straight angles are equal to 180 degrees. the friend found m<3=40 and m<4 is equal to 140 degrees (im not good at explaining, sorry)

Factor y =`x^{2}\ +\ 3x\ -\ 10`

Answers

y = (x - 2) (x + 5)
If you need more help, you can leave a comment.

Select ALL equations that are functions.

Answers

functions can't be with exponents -

the correct answers are b,c,d

Answer:

These 3:

y = 2, y = 1/2x + 5, y = x

Step-by-step explanation:

Y can't be squared that would give a sideways function, that doesn't pass the vertical line test

I NEED HELP ASP. IT IS SO HARD

Answers

Answer:

Company A charges less per square foot

A charges 2.25 per square foot

B charges 2.75 per square foot

Step-by-step explanation:

Divide the cost by the appropriate square feet

3300÷1200=2.75

3850÷1400=2.75

Hiiioo❤️ Can someone please help me with this❤️:D

Answers

Answer:

k= 2.5

Step-by-step explanation:

4k+5=6k+10

-4k    -4k

5=2k+10

-10     -10

-5=2k

/2    /2

-2.5= k

Question 6 (1 point)
Write an equation of a circle that is centered at (1,-4) with a radius of 10.

Answers

Answer:

The equation is (x-1)*2 + (y + 4)*2

The * is the little two that the top so its squared if that makes sense

Help me on this plz

Answers

Answer: $467.21

Step-by-step explanation:

8% of 600 = 48

600 - 48 = 552

8% of 552 = 44.16

552 - 44.16 = 507.84

8% of 507.84 = 40.6272

8% of 507.84 ≈ 40.63

507.84 - 40.63 = 467.21

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