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3 years ago

Ten times the sum of a number and 27 is greater than 20 .

Mathematics

1 answer:

Paha777 [63]3 years ago

6 0

Answer:

x>-25

Step-by-step explanation:

10(x+27)>20

x+27>20/10

x+27>2

x>2-27

x>-25

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Pls help with this problem if u do thx <3

Vitek1552 [10]

<h3>2 Answers: Choice B and Choice D</h3>

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Work Shown:

c = price of coat before discount

0.33c = discount = amount you save

c - 0.33c = original price minus discount = final price

c - 0.33c = 1c - 0.33c = (1-0.33)c = 0.67c = final price

In short, c - 0.33c = 0.67c

They are two ways of expressing the same thing.

You can think of it like saying 100% - 33% = 67%

If you save 33%, then you still have to pay the remaining 67% of the original cost.

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Example:

Let's say the coat is $100 before the discount

c = 100

0.33*c = 0.33*100 = 33 dollars is how much you save

c - 0.33c = 100 - 33 = 67 dollars is the final price

0.67c = 0.67*100 = 67 matches with the previous figure above

8 0

2 years ago

The pitch of a roof is its slope. The roof of a home rises vertically a distance of 8 ft through a horizontal distance of 15 ft.

PIT_PIT [208]

If we discuss this as if it is a triangle then the "rise" is the vertical side and the "run" is the adjacent side.
So the ratio of the rise to the run is 8 / 15 which equals 0.5333333333 
To find the angle of this roof pitch we look up the arc tangent of 0.5333333333 and we find that is 28.072 Degrees

Trigonometry Calculator:
http://www.1728.org/trigcalc.htm

4 0

2 years ago

The slopes of perpendicular lines are _______ reciprocals.

MariettaO [177]

The negative reciprical

7 0

2 years ago

Read 2 more answers

Mattie uses the discriminant to determine the number of zeros the quadratic equation 0 = 3x2 – 7x + 4 has. Which best describes

Eduardwww [97]

For $ax^2+bx+c=0$ the discriminant is $b^2-4ac$

there are 3 basic cases of what happens for different discriminants
1. if the discriminant is less than 0, then there are no real zeroes
2. if the discriminant is 0, then it has 1 zero
3. if the discriminant is greater than 0, it has 2 zeroes

so given
$0=3x^2-7x+4$
a=3,b=-7,c=4
thus the discriminant is $(-7)^2-4(3)(4)=49-48=1$
the discriminant is 1. 1 is positive, thus the equation has 2 zeroes because the discriminant is greater than 0

the answer is the equation has two zeroes because the discriminant is greater than 0

8 0

2 years ago

Read 2 more answers

What is the volume of a cylinder with a

weeeeeb [17]

Answer:

Yes it is is 392.9 m^3

Step-by-step explanation:

Volume of cylinder is π*r^2*h, π times radius squared times height.

Since the diameter is 5.2, the radius is 2.6 (half of it). 2.6^2 = 6.76, and the height is 18.5, 6.76*18.5 = 125.06. Multiply it by pi to get 392.887577258, round it to 392.9, The volume is 392.9 cubic meters.

6 0

2 years ago