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2 years ago

MY NOTES

Mathematics

1 answer:

Tasya [4]2 years ago

7 0

Yes x y 1.24 b to the point of a game that is a little hard to get x y to the point

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I need help??????????????

Likurg_2 [28]

Answer:

Step-by-step explanation:

$50*0.40=20$

7 0

2 years ago

Read 2 more answers

What two numbers have a sum of 217 and a <br> difference of 85?

Setler [38]

Answer:

the two numbers are 151 and 66

Step-by-step explanation:

x+y =217

x-y = 85

add the two equations

x+y =217

x-y = 85

-------------

2x = 302

divide by 2

2x/2 = 302/2

x = 151

now find y

x+y =217

151+y =217

subtract 151 from each side

y = 217-151

y =66

8 0

3 years ago

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

2 years ago

Given that, 1 Chinese yuan = £0.13, convert £314 into Chinese yuan. Give

Maurinko [17]

Answer:

2415 Chinese yuan (rounded off to nearest yuan)

Step-by-step explanation:

£0.13 = 1 Chinese yuan

£314 = $\frac{314}{0.13}$ ×1 Chinese yuan

= 2415 Chinese yuan (rounded off to nearest yuan)

5 0

2 years ago

paul earns 25.50 for every lawn he mows. this week he moved L lawns. he spends 3.50 per lawn on gasoline. write an expression to

notsponge [240]

If Paul mows the lawn once, he earns 1*25.50. If he mows it twice, he earns 2*25.50, and so on. So, he earns L*25.50. But, he spends 3.50. So the equation is:

$L*25.50-3.50$

3 0

3 years ago