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2 years ago

What is the common difference for this arithmetic sequence? 45, 40, 35, 30, 25, ...

Mathematics

2 answers:

FromTheMoon [43]2 years ago

5 0

It goes down by 5. -5 would also be another way of saying that.

siniylev [52]2 years ago

4 0

It goes down by 5 each number.

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A tank that holds 6000 gallons of water may be filled by two pipes. One pipe pours water into the tank at the rate of 80 gallons

hammer [34]

Answer:

Below.

Step-by-step explanation:

Working together the rate is 80 + 120 = 200 gallons per minute.

(a) Time to fill tank = 6000 / 200 = 30 minutes.

(b) Let length of time the small pipe was used be x minutes , the the large pipe was used for is 60-x minutes.

Volume delivered by small pipe = y gallons, and by large pipe = 6000-y gallons.

Rate for small pipe = 80 = y/x.

Rate for large pipe = 120 = (6000-y) / 60-x.

y/x = 80

(6000-y) / 60-x = 120

From first equation y = 80x so:

6000 - 80 x = 7200 - 120x

40x = 1200

x = 30

So time for small pipe = 30 and time for large on = 30 minutes also.

C. In a similar way to part B:

y/x = 120

(6000-y) / 34 - x = 200

(6000-120x) / 34 - x = 200

6000 - 120x = 6800 - 200x

80x = 800 so the large pipe on its own took 10 minutes and the small pipe was used for 34 - 10 = 24 minutes.

3 0

2 years ago

Find y when x is -3<br> y=6x+8

lys-0071 [83]

Answer:

-10

Step-by-step explanation:

y=6x+8

y=6(-3)+8

y=-18+8

y=-10

3 0

2 years ago

Can't solve this problem. Need help

nata0808 [166]

0T= area of the square-(15*4)
=we will get the area of circle
area of circle=pi*r(square)
here r square is not there
and area is there
so the equation will be like this
r(square)=7*the area of circle \ 22
so the answer you can find
I am little busy right now

5 0

3 years ago

For a certain casino slot machine comma the odds in favor of a win are given as 7 to 93. Express the indicated degree of likelih

ruslelena [56]

Answer:

0.07

Step-by-step explanation:

it is given odds in favor of a win is 7 to 93

we have to find the degree of likelihood as a probability

total sample space =7+93=100

so the degree of likelihood as a probability = $\frac{7}{100} =0.07$

so we can conclude that the probability will be 0.07 which is very less so the chances of win in the casino is very less

3 0

2 years ago

Multiply the polynomials.

Evgesh-ka [11]

Answer:

x^3-x^2-17x+12

Step-by-step explanation:

(x+4)(x^2-5x+3)

x^3-5x^2+3x+4x^2-20x+12

x^3-5x^2+4x^2+3x-20x+12

x^3-x^2-17x+12

6 0

3 years ago

Read 2 more answers