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Brilliant_brown [7]
3 years ago
7

What is 15.5 units down? negative or positive?

Mathematics
2 answers:
olga2289 [7]3 years ago
7 0
It would be negative seeing the key word is down. (:
Hope I could help!
Furkat [3]3 years ago
4 0
On a graph, going down or left is a decrease, while going up or right is an increase.
From the origin point, going down 15.5 units would result in negative 15.5 (-15.5).
Think about if you have 4 apples. If you add 2 more, that would an increase and would be represented by a positive number, for positive rate of change. But if you then take away 3 apples, then your amount of apples would go down, it would decrease. And this decrease is represented for a negative number, for a negative rate of change.

So the answer is negative.
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Find the range of f(x)=-2x+6 for the domain {-1, 3, 7, 9}
velikii [3]

Answer:

8, 0, -8, -12

Step-by-step explanation:

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3 years ago
Urgent! Two questions! (Pre Calc) (30 points)
mina [271]
Problem One
Sin(90 + q) = sin(90)*cos(q) + sin(q)*cos(90)
sin(90 + q) = 1 * cos(q) + sin(q)*0
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You can also eliminate the sin function with a minus between it. 

Problem 2
Sin(x) = 1/csc(x) That makes C and D incorrect.
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4 0
3 years ago
A parabola can be drawn given a focus of (-5, -4)(−5,−4) and a directrix of y=-6y=−6. Write the equation of the parabola in any
lord [1]

Answer:

\displaystyle \large{y=\dfrac{x^2}{4} + \dfrac{5x}{2} + \dfrac{5}{4}}

Step-by-step explanation:

Given:

  • Focus = (-5,-4)
  • Directrix = -6

To find:

  • Parabola Equation

Locus of Parabola (Upward/Downward)

\displaystyle \large{\sqrt{(x-a)^2+(y-b)^2} = |y-c|}

Where:

  • (a,b) = focus
  • c = directrix

Hence:

\displaystyle \large{\sqrt{(x+5)^2+(y+4)^2}=|y+6|}

Cancel square root by squaring both sides as we get:

\displaystyle \large{(x+5)^2+(y+4)^2=(y+6)^2}

Solve for y-term:

\displaystyle \large{(x+5)^2=(y+6)^2-(y+4)^2}\\\displaystyle \large{x^2+10x+25=y^2+12y+36-y^2-8y-16}\\\displaystyle \large{x^2+10x+25=4y+20}\\\displaystyle \large{x^2+10x+5=4y}\\\displaystyle \large{y=\dfrac{x^2}{4} + \dfrac{5x}{2} + \dfrac{5}{4}}

4 0
1 year ago
The average person in the United States drinks 767 cups of coffee annually. How many quarts of coffee is that? Show your work. (
My name is Ann [436]

Answer: 191.75 quarts.

Step-by-step explanation:

We know that:

1 quart = 4 cups.

Then:

1 cup = 1/4 quarts.

this means that 1 cup, is equal to 1/4 quarts.

Then 767 cups is equal to 767 times 1/4 quarts.

The change of units is simply:

767 cups = 767*( 1/4 quarts) = 191.75 quarts.

7 0
3 years ago
The set of all integers between -100 and 100?
Morgarella [4.7K]

[-100, -99, -98, -97, -96, 95, -94 .... 94, 95, 96, 97, 98, 99, 100]

its all of the whole numbers from -100 to 100 inclusive

4 0
3 years ago
Read 2 more answers
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