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3 years ago

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.

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3 years ago

Evaluate the expression 7+3²× 2

disa [49]

Answer:

Step-by-step explanation:

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3 years ago

Which property of multiplication is shown? 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:

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3 years ago

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1. Factor the polynomials given one zero. a) f(x)=xº+3x-34 x+48; 3

Mars2501 [29]

Step-by-step explanation:

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

=38x+14

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3 years ago