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2 years ago

15

How to find a rule and extend a pattern

1 answer:

makvit [3.9K]2 years ago

7 0

Look for a relationship between the input “X” side, and the output “Y” side. Check thepattern<span> against every row. It has to be true for the whole table, or it's not the </span>rule<span>. Use the </span>rule<span>, and the numbers you </span>know<span>, to complete or </span>extend<span> the </span>pattern<span>.</span>

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An airplane 40,000 feet above the ground begins descending at a rate of 1,500 feet per minute. Write an equation to model the si

user100 [1]

Answer:

h(t) = 40,000 - 1,500t

Step-by-step explanation:

Let h(t) be the height of the airplane after t minutes.

h(t) = 40,000 - 1,500t

4 0

2 years ago

If {X)= x-9 and d(x) = x + 3, what is the domain of (cd)(x)?

Aleonysh [2.5K]

Answer:

i wish i knew

Step-by-step explanation:

i wanted to type

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3 years ago

What is the area of a triangle with vertices (3,0) (9,0) (7,6)

Nezavi [6.7K]

Answer:

The area of the triangle is of 21 units of area.

Step-by-step explanation:

The area of a triangle with three vertices $(x_1,y_1),(x_2,y_2),(x_3,y_3)$ is given by the determinant of the following matrix:

$A = \pm 0.5 \left|\begin{array}{ccc}x_1&y_1&1\\x_2&y_2&1\\1_3&y_3&1\end{array}\right|$

In this question:

Vertices (3,0) (9,0) (7,6). So

$A = \pm 0.5 \left|\begin{array}{ccc}3&0&1\\9&0&1\\7&7&1\end{array}\right|$

$A = \pm 0.5(3*0*1+0*1*7+1*9*7-0*7*1-0*9*1-3*1*7)$

$A = \pm 0.5*(63-21)$

$A = \pm 0.5*42 = 21$

The area of the triangle is of 21 units of area.

5 0

2 years ago

Bella used 2/9 of a paper pack, or 72 pieces. How many pieces of paper were there to start with?

prisoha [69]

Hello!

First, we need to find the unit rate.

72 divided by 2 = 36.

36 x 9 = 324.

There were 324 pieces of paper to start with.

Hope this helps, ~Pooch ♥

6 0

3 years ago

Can someone pls help lol I rlly do need help on this :)

Fittoniya [83]

Answer:

a+51=90

a+51+90=180

39

Step-by-step explanation:

hope this helped :)

7 0

2 years ago