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FrozenT [24]
2 years ago
12

On a number line, the surface of a river is marked at −220 feet and the top of a building is marked at +19 feet, where 0 represe

nts sea level. What do −220 and +19 represent?
220 feet below sea level and 19 feet above sea level
220 feet above sea level and 19 feet below sea level
220 feet below sea level and 19 feet above 220
220 feet above sea level and 19 feet below 220
Mathematics
2 answers:
nevsk [136]2 years ago
8 0

Answer:

A

Step-by-step explanation:

0 is sea lvl so just add and subsubtract

just olya [345]2 years ago
6 0

Answer:

A

Step-by-step explanation:

its A bc it said -220 witch is negative so that means ill be below sea level and +14 is a positive number so that will be above sea level.

Hope that helps!

~Emma~

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Show all steps to solve:<br> 3( 1/6+2/9) + (-2)
Alex73 [517]

Answer:

-5/6

Step-by-step explanation:

3(1/6+2/9)+(-2)

3(7/18)+(-2)     working what is in parenthesis.

7/6-2              reduced the numbers ( 3 and 18) with greatest common divisor                      .                     which is 3

-5/6                calculate the difference

6 0
3 years ago
X=1,<br> X^2=X,<br> X^2-1=X-1,<br> (X+1)(X-1)=X-1,<br> X+1=1,<br> X=0<br><br> Where is the mastic?
Alchen [17]

Answer:

You are technically dividing by zero, it breaks math.

In the step (X+1)(X-1)=X-1 → X+1=1.

You divide (X+1)(X-1)=X-1 by (x-1) on both sides to get:

(x+1)(x-1) / (x-1) = (x-1) / (x-1).

Since x = 1,

(x + 1)(x - 1) / (x - 1) = (x - 1) / (x - 1)

becomes (2)(0) / <u>0</u> = 0 / <u>0</u>.

And when you divide by zero, it's undefined since you cannot multiply a number by zero and get a number other than zero, it's undefinable.

This is where limits come in, when you divide by a variable, you have to assumed that is it ≠ 0.

You know that 1 ≠ 2, and 0 ≠ 1, and so on.

As dividing by zero approaches infinity,

1/0.1 = 10, 1/0.01 = 100, 1/0.001 = 1000, 1/0.00..1 = 1000.. → 1/0 → infinity.

1/-0.1 = -10, 1/-0.01 = -100, 1/-0.001 = -1000,

1/-0.00..1 = -1000.. → 1/0 → -infinity.

This suggests that dividing by zero should be infinity.

Therefore infinity = -infinity, Wrong.

When you are dividing, you are really asking yourself, how many times does this number fit into the other number.

1 cannot fit into 0, there isn't anything to fit into. This can also be thought of as:

1 = 0 + 0 + 0 + 0 + 0 + ......

0 + 0 = 0, so 1 ≠ 0.

5 0
3 years ago
given triangle GHI with G(4,-3), H(-4,2) and I(2,4), find the perpendicular bisector of HI in standard form.
nekit [7.7K]
The perpendicular bisector would be the line that connects with the line HI at a 90 degree angle and in the mid-point. This means that we would have to find the slope of the line HI and take the opposite. The slope of HI is 1/3. This means that the slope of the perpendicular line is -3. Now we must solve for the line that crosses through the midpoint. y=mx+b we know that m=-3 and that the midpoint is at -1,3 so x=-1 and y=3.  3=(-3)-1+b. We then solve for b and find it to be 0.  So the final answer is y= -3x
8 0
3 years ago
Read 2 more answers
Which of the following lists the angles from smallest to largest?
Damm [24]

The answer TMS

Step-by-step explanation:

4 0
3 years ago
Use completing the square to solve the equation x^2+16x=-44.
Sidana [21]

Step-by-step explanation:

our equation is x²+16x = -44

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Now that we have completed the perfect square let's solve the equation

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so the first answer is the correct one

64; 8 +/- \sqrt{20}

7 0
3 years ago
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