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3 years ago

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Mathematics

1 answer:

lina2011 [118]3 years ago

8 0

Answer: X = kuv/ (u+v)

that means that x(u+v)/(uv) = k, a constant. so you want x such that,

x(3+3)/(3*3) = 3(3+1)/(3*1)

x=6

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Help!! So confused!

Mashutka [201]

The series in the form of arithmetic progression
The notation of A.P is a, a+d, a+2d.....
The summation notation is â‘
In this series a=3, d=7
Then the summation of A.P is â‘ = n/2(2a+(n-1)d)
=18/2(2*3+ (18-1)7)
= 9(6+17(7))
=9(6+119)
=9(125)
= 1125
Hence the total number of beads is 1125

6 0

4 years ago

Convert the rate of 10 yards per 5 minutes to feet per hour

jenyasd209 [6]

10 yards per 5min is

10yrd/5min

first convert it into yards per minute

10yrds/5min = 2yrds/1min

let's first so the yards to feet part first

1 yrd = 3 feet

2yrds/min * 3ft/1yrd

so now we have

6yrds/min

now convert minute to hour

1 hour = 60 mins

6yrds/min * 60min/1hr

=360/1hr

remember so that units cancel

5 0

4 years ago

Read 2 more answers

A store sells two sizes of bottled water. Size A is 32 fluid ounces (f1 oz) for $2.56 and Size X is $4.80 for

Leto [7]

Answer:

SIZE A

32 fluid ounce =2.56

I fuid ounce =2.56/32=0.08

SIZE X

48 fuid ounce = 4.80

I fluid ounce = 4.80/48=0.1

since 0.08 is lesser than 0.1

therefore, that of size A is better

I would appreciate if my answer is chosen as a brainliest answer

7 0

3 years ago

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77julia77 [94]

The area of section 1 is 12 square feet, the area of section 2 is 40 square feet, and the area of section 3 is 6 square feet.

3 0

3 years ago

Read 2 more answers

The sum of two numbers is 66. Two times the smaller number is 15 more than the larger number. What are the numbers? First one wi

Viktor [21]

Answer:

Larger number (y) is 39

Smaller number (x) = 66 - 39 = 27.

Step-by-step explanation:

Let the smaller number be x and the larger number be y.

Sum of two numbers = 66

According to question,

x + y = 66

x = 66 - y.........(1)

Now, since twice of smaller number is 15 more than the larger number, According to question,

2(smaller number) = larger number + 15

2x = y + 15 .........(2)

Now substituting the value of y from (1) in (2)

2 (66 - y) = y + 15

132 - 2y = y + 15

-2y - y = -132 + 15

3y = 117

y = 117/3 = 39

So the largest number (y) is 39

Smaller number (x) = 66 - 39 = 27.

8 0

4 years ago

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