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2 years ago

Can someone please help me on this THIS IS URGENT!!!!

Mathematics

2 answers:

andre [41]2 years ago

7 0

What are we helping with

max2010maxim [7]2 years ago

5 0

Answer:

I can't answer this the picture doesn't have anything on it

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A right triangle in which one acute angle is a reference angle for a 75° angle in standard position intersects the unit circle a

vampirchik [111]

Alright, lets get started.

Please take a look at the diagram attached.

The reference angle of 75 will be 75

As it is mentioned that the angle intersects the unit circle means r = 1

So, finding cos

cos 75 = $\frac{X}{r}$

cos 75 = $\frac{0.259}{1}$

cos 75 = 0.259 : Answer

Hope it will help :)

7 0

3 years ago

Can you rewrite 68/7 as a mixed number

fredd [130]

Answer: 9 5/7

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Find the lateral area for the pyramid with the equilateral base

likoan [24]

<h3>The lateral area for the pyramid with the equilateral base is 144 square units</h3>

Solution:

The given pyramid has 3 lateral triangular side

The figure is attached below

Base of triangle = 12 unit

Find the perpendicular

By Pythagoras theorem

$hypotenuse^2 = opposite^2 + adjacent^2$

Therefore,

$opposite^2 = 10^2 - 6^2\\\\opposite^2 = 100 - 36\\\\opposite^2 = 64\\\\opposite = 8$

Find the lateral surface area of 1 triangle

$\text{ Area of 1 lateral triangle } = \frac{1}{2} \times opposite \times base$

$\text{ Area of 1 lateral triangle } = \frac{1}{2} \times 8 \times 12\\\\\text{ Area of 1 lateral triangle } = 48$

Thus, lateral surface area of 3 triangle is:

3 x 48 = 144

Thus lateral area for the pyramid with the equilateral base is 144 square units

5 0

3 years ago

a survey of students in a school showed 1/2 of the students exercise regularly, 2/5 of the students exercise occasionally and th

Sveta_85 [38]

Answer:

1/10

Step-by-step explanation:

add 2/5 and 1/2 then subtract from 1 whole to find the remainder

make it so they have the same denominator

2/5 = 4/10

1/2 = 5/10

4/10 + 5/10 = 9/10

1=10/10

10/10-9/10 = 1/10

so 1/10 of the students don't exercise at all

5 0

3 years ago

A notebook that costs $0.75 to make in the factory is sold for $1.35.

kvasek [131]

Answer:

a) price markup $0.60

b) percent marked up 180%

Step-by-step explanation:

Amount marked up:

1.35 - 0.75 = $0.60

Percent markup:

0.75x = 1.35

x = 1.8 or 180%

5 0

2 years ago