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11111nata11111 [884]
3 years ago
15

Perform the indicated operation and write the result in the form a + bt. (4 +9t)(7 - 4t)

Mathematics
1 answer:
bulgar [2K]3 years ago
7 0
The answer is 64+47i
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The length of a rectangular deck is five times it's width if the decks perimeter is 24 feet what is the decks area
miv72 [106K]

Answer:

20 square feet

Step-by-step explanation:

The length of a rectangular deck is five times it's width if the decks perimeter is 24 feet what is the decks area

Step 1

We find the Length and Width of the deck

Perimeter of a rectangle = 2L + 2W

The length of a rectangular deck is five times it's width

W = Width

L = Length = 5W

P = 24 feet

Perimeter = 2(5W) + 2W

24 = 10W + 2W

24 = 12 W

W = 24/12

W = 2 feet

Solving for L

L = 5W

L = 5 × 2 feet

L = 10 feet

Step 2

We find the area of the deck

Area of the deck(Rectangle) = Length × Width

= 10 feet × 2 feet

= 20 square feet

4 0
3 years ago
The horizontal line segment at the top of the polygon on the grid below is how many units long?​
Ymorist [56]

Answer:

6 units long.

Step-by-step explanation:

Given:

A polygon drawn on a graph.

In order to determine the distance of the horizontal line at the top, we find the coordinates of the end points and then use distance formula to find the exact distance.

Let us label the polygon as ABCD as shown below. AB is the length of the horizontal line.

Coordinates of A are (x_1,y_1)=(-3, 4) as seen in the graph.

Coordinates of B are (x_2,y_2)=( 3, 4) as seen in the graph.

Now, distance formula  for two points (x_1,y_1)\ and\ (x_2,y_2) is:

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\d_{AB}=\sqrt{(3-(-3))^2+(4-4)^2}\\d_{AB}=\sqrt{(3+3)^2+0}\\d_{AB}=\sqrt{36}=6\ units

Therefore, the horizontal line at the top is 6 units long.

4 0
4 years ago
I need help on numbers 17&18.
jekas [21]
I don't know if this is just my phone, but the picture won't load.

You could try posting a new picture? Or feel free to message me with the picture and I'll be glad to help! :)
5 0
3 years ago
Read 2 more answers
Which is the best unit to measure the distance between califronia and new york
Ludmilka [50]

Answer:

Miles would be the best.

Step-by-step explanation:

Miles are the largest way to measure land, so I would use that.

3 0
3 years ago
Read 2 more answers
Helpppppp meeeeee 3/4x - 9 = 27 two step equations helppppppp
In-s [12.5K]

Isolate the x. Note the equal sign. What you do to one side, you do to the other.

First, add 9 to both sides

3/4x - 9 (+9) = 27 (+9)

3/4x = 36

Next, multiply 4/3 to both sides

(4/3)(3/4)x = 36(4/3)

x = 36(4/3)

Simplify.

x = 12(4)

x = 48

48 is your answer for x.

hope this helps

5 0
3 years ago
Read 2 more answers
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