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Sergeu [11.5K]
3 years ago
9

The height of a door would be about A: 8 inches B: 8 feet C: 8 yards D: 8Miles

Mathematics
2 answers:
liq [111]3 years ago
8 0

8 inches :) (im pretty sure)

Aneli [31]3 years ago
7 0

Answer:

B

Step-by-step explanation:

A door isn't about the size of my foot

Not the size height of my house

Not the size of my street

Sooooooo...

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Which algebraic expression represents the phrase "two times the quantity of a number minus 12"? A. 2y - 12 B. 2(y -12) C. 2(y +
bazaltina [42]

Answer:

B

Step-by-step explanation:

Two times the quantity of a number minus 12.

Represent the number with the variable y.

The quantity of a number minus 12 is then: (y-12).

Two times this quantity is 2(y-12).

So the answer is 2(y-12), which is B.

5 0
2 years ago
Find an equation for the parabola with focus at (-5,-4) and vertex at (-5,-3)
sattari [20]

Answer:

(x+5)^{2}=-4(y+3)

Step-by-step explanation:

Given:

Focus point = (-5, -4)

Vertex point = (-5, -3)

We need to find the equation for the parabola.

Solution:

Since the x-coordinates of the vertex and focus are the same,

so this is a regular vertical parabola, where the x part is squared. Since the vertex is above the focus, this is a right-side down parabola and p is negative.

The vertex of this parabola is at (h, k) and the focus is at (h, k + p). So, directrix is y = k - p.

Substitute y = -4 and k = -3.

-4 = -3+p

p=-4+3

p=-1

So the standard form of the parabola is written as.

(x-h)^{2}=4p(y-k)

Substitute vertex (h, k) = (-5, -3) and p = -1 in the above standard form of the parabola.

So the standard form of the parabola is written as.

(x-(-5))^{2}=4(-1)(y-(-3))

(x+5)^{2}=-4(y+3)

Therefore, equation for the parabola with focus at (-5,-4) and vertex at (-5,-3)

(x+5)^{2}=-4(y+3)

7 0
3 years ago
Number of Words in Book Titles: 6, 3, 5, 2, 2, 3, 3, 1,3
3241004551 [841]

Answer:

About 3.11

Step-by-step explanation:

Add the numbers and divide the value by the number of values in the data set.

6 + 3 + 5 + 2 + 2 + 3 + 3 + 1 + 3 = 28

28/9 = 3.1111...

3.111... ≈ 3.11

Hope this helps.

8 0
3 years ago
Write a quadratic function f whose zeros are 3 and 12.<br> f(x) = ?
ololo11 [35]

Answer:

The above equation is a quadratic function whose zeroes are 3 and 12.

Step-by-step explanation:

The general quadratic equation is given by :

ax^2+bx+c=0

It is given that, the zeroes of a quadratic function are 3 and 12. It means they must be factors of it such that,

(x-3)=0\\\\(x-12)=0

So, we can write as :

(x-3)(x-12)=0

Multiplying both factors,

(x-3)(x-12)=0\\\\x^2-12x-3x+36=0\\\\x^2-15x+36=0

So, the above equation is a quadratic function whose zeroes are 3 and 12.

5 0
2 years ago
Tamara sold 92 cold drinks during her 2-hour shift at a festival food stand.if she sold the same number of drinks each hour, how
tester [92]
The answer is 92÷2=46
3 0
3 years ago
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