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Volgvan
2 years ago
15

What is the value of t if: 1,5×174=t×4,5×87

Mathematics
1 answer:
lana66690 [7]2 years ago
5 0
Can you do all calculations around T? This is called implying which would help me a lot to help you solve this
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PLEASE HELP ASAP, THANK YOU
nlexa [21]

First step is to plot all the given coordinates in the xy plane.

Notice that after plotting the points A, B, C and D, we have got the figure ABCD is a trapezium with bases AD = 4 units, BC = 6 units and height: DE= 5 units.

Formula to find the area of trapezium is:

Area = \frac{(AD+BC)}{2} *DE

= \frac{4+6}{2} *5

=\frac{10}{2} *5

= 5 * 5

= 25 square units.

So, third choice is correct.

Hope this helps you!

6 0
3 years ago
If rectangle ABCD is rotated counter clock wise 90º about the origin, what will be the coordinates of the vertex D'?
7nadin3 [17]
So, the best way to do this is translate it to clockwise. 90 degrees counterclockwise is equal to 270 degrees clockwise. So, basically, to rotate, you would follow the following format for each point-
(X,Y) -> (-Y,X)
Now, you do it for each of the points.
A= (-5,5), so A' would be (-5,-5)
B= (-1,5), so B' would be (-5,-1)
C= (-5,4), so C' would be (-4,-5)
D= (-1,4) so D' would be (-4,-1)
Notice, how all the points end up in the square below it. Each quadrant has a specific number. The top right is quadrant 1, the top left is quadrant 2, the bottom left is quadrant 3, and the bottom right is quadrant 4. If you are rotating 270 degrees clockwise, you move to the right, like a clock. That puts the new rectangle in quadrant 3. That is a way to check your work.
Now, just so you know for future reference, the following are also different formats for different problems--
A 90 degree Clockwise rotation about the origin will be (X,Y) -> (Y, -X) *Note, -x just stands for the opposite. Say your original x is a negative number. Then the prime (new) x will be positive.
A 180 degree Clockwise rotation about the origin would be (X,Y) -> (-X,-Y) *Note, -y also stands for the opposite.
A 270 degree clockwise rotation about the origin would be (X,Y) -> (-Y,X).
For translating---
90 degrees Clockwise = 270 degrees Counter
270 degrees Clockwise = 90 degrees Counter

Hope this helped!
4 0
3 years ago
Answer Choices:
algol [13]
The best answer to go with is b
5 0
3 years ago
Can someone please help me?
Reika [66]
The answer is -2 because the the next one is -3
8 0
3 years ago
Prove that: 1=SecB.CosB​
Schach [20]

Answer:

Js

Step-by-step explanation:

U bot

I am hacker

3 0
3 years ago
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