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larisa [96]
3 years ago
13

Work out percentage change to 2 decimal places when price of 97 is decreased to 90

Mathematics
1 answer:
Stels [109]3 years ago
6 0

Answer:

7.22?

Step-by-step explanation:

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A palm tree is supported by two guy wires as shown in the diagram below. Which trig expression can be used to find the height on
Volgvan

Answer:

D. tan(30^\circ+45^\circ) is the correct answer.

Step-by-step explanation:

The given situation can be represented as a figure attached in answer area.

B is the base of tree.

C is the base of wires.

A and D are the end of 2 wires supporting the tree.

\angle DCB =45^\circ\\\angle ACB =75^\circ\\

Here, we need to find the Height of the tree which is represented the by side AB.

and we are given that bases of wires and tree base are at a distance 4 ft.

i.e. side BC = 4 ft

If we look at the \triangle ABC, we are given the base BC and the \angle ACB, and the perpendicular is to be find out.

We can use trigonometric identity:

tan\theta =\dfrac{Perpendicular}{Base}

tan 75^\circ = \dfrac{AB}{BC}\\\bold {tan (45+30)^\circ }= \dfrac{AB}{4}\\\Rightarrow AB = \bold {tan (45+30)^\circ } \times 4 = 14.93\ ft

Hence, D. tan(30^\circ+45^\circ) is the correct answer.

5 0
3 years ago
Evaluate the expression 7+3²× 2​
disa [49]

Answer:

25

Step-by-step explanation:

6 0
3 years ago
Which property of multiplication is shown?<br><br> 9 × 0 − 6 × 0 = (9 − 6) × 0
JulsSmile [24]

Answer: Associative property

Step-by-step explanation: it is the same equation but they switched the numbers around on the other side of the equal sign so therefore its associative property

7 0
3 years ago
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Which decimal is equivalent to 56?
Akimi4 [234]

Answer:

0.56

Step-by-step explanation:

7 0
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Step-by-step explanation:

=x+3x+34x-34+48

=38x+14

5 0
3 years ago
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