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Y_Kistochka [10]
3 years ago
14

The product of 5 and a number, decreased by 9, is 306. What is the number?

Mathematics
2 answers:
densk [106]3 years ago
7 0

Answer:

The number is 63

Step-by-step explanation:

Product means multiply

5n

Decreased by 9

5n-9

Is means equals

5n-9 = 306

Solve

5n-9 = 306

Add 9 to each side

5n-9+9 = 3-6+9

5n = 315

Divide by 5

5n/5 = 315/5

n = 63

steposvetlana [31]3 years ago
5 0

Step-by-step explanation:

bsbdjdkksnsbsvsvns NC Ricans Roxane Isiah

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Answer:

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Step-by-step explanation:

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3 years ago
The patch of the blade has a circumference of about 12.5 inches. What is the radius of the model.
Gekata [30.6K]
C=2pi(r) 12.5=2pi(r) r= 12.5/(2pi) which is the exact answer. Approximately 1.989
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3 years ago
On a floor plan drawn at a scale of 1:100, the area of a rectangular room is 30
Troyanec [42]
Assume that the dimensions of the room in the plan are a (width ) by b (length),

such that a*b=30.

Since the scale is 1:100, a represents 100a, and b represents 100b.

So the actual dimensions are 100a by 100b.

The area is 100a*100b=a*b*10,000=30*10,000=300,000 (square units)



Answer:  300,000 (square units)


8 0
3 years ago
#2
I am Lyosha [343]

You have the right idea that things need to get multiplied.

What should be done is that the entire fraction needs to get multipled by the lowest common denominator of both denominators.

Let's look at the complex numerator. Its denominators are 5 and x + 6. Nothing is common with these, so both pieces are needed.

The complex denominator has x - 3 as its denominator. With nothing in common between it and the complex numerator, that piece is needed.

So we multiply the entire complex fraction by (5)(x + 6)(x -3).

Numerator: (\frac{1}{5} -\frac{5}{x + 6})(5)(x +6)(x-3) =\frac{1}{5}(5)(x +6)(x-3) -   \frac{5}{x + 6}(5)(x +6)(x-3)

= (x+6)(x-3) - (5)(5)(x-3)

= (x+6)(x-3) - 25(x-3)

= (x-3)(x + 6 - 25) <--- by group factoring the common x - 3

= (x -3)(x - 19)

Denominator:

\frac{25}{x - 3} * (5)(x + 6)(x - 3) = (25)(5)(x + 6) = 125(x + 6)


Now we put the pieces together.


Our fraction simplies to (x - 3) (x - 19) / 125 (x + 6)

5 0
3 years ago
Do most students walk, bike, or bus to school?
bonufazy [111]

Answer:

Most students ride the bus since the pie chart section is biggest at the bus section.

23 people walking / 100 people is 23% and 23% of 100 is 23 people.

Step-by-step explanation:

5 0
3 years ago
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