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2 years ago

What is the answer to this?

Mathematics

2 answers:

Tomtit [17]2 years ago

7 0

Answer:

B184

Step-by-step explanation:

TO solve, follow pemdas

Perhenteses

Exponents

Multiplacation

Division

Addition

Subtraction

Top to bottom

First solve pahrentheses. 2+3 = 5 squared which is 25. 8x25=200. 4 squared is 16 so subtract 16 from 200 to get 184, our answer.

ra1l [238]2 years ago

5 0

The answer to your question is = 184

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Express sin A,cos A and tan A as ratios

OverLord2011 [107]

Answer:

Part A) $sin(A)=\frac{2\sqrt{42}}{23}$

Part B) $cos(A)=\frac{19}{23}$

Part C) $tan(A)=\frac{2\sqrt{42}}{19}$

Step-by-step explanation:

Part A) we know that

In the right triangle ABC of the figure the sine of angle A is equal to divide the opposite side angle A by the hypotenuse

$sin(A)=\frac{BC}{AB}$

substitute the values

$sin(A)=\frac{2\sqrt{42}}{23}$

Part B) we know that

In the right triangle ABC of the figure the cosine of angle A is equal to divide the adjacent side angle A by the hypotenuse

$cos(A)=\frac{AC}{AB}$

substitute the values

$cos(A)=\frac{19}{23}$

Part C) we know that

In the right triangle ABC of the figure the tangent of angle A is equal to divide the opposite side angle A by the adjacent side angle A

$tan(A)=\frac{BC}{AC}$

substitute the values

$tan(A)=\frac{2\sqrt{42}}{19}$

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2 years ago

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Step-by-step explanation:

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2 years ago

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1.5c - 6 = 7.5 i need help with this problem and i have no one to help me

Lostsunrise [7]

Answer:

c=9

Step-by-step explanation:

Let's solve your equation step by step:

add 6 on both sides
divide 1.5 from the product of 6 and 7.5 (aka 13.5)
you will get C
put 9 in for C.

1. $1.5c-6+6=7.5+6$

1.5 $1.5c=13.5$

2. $\frac{1.5c}{1.5c}=\frac{13.5}{1.5c}$

3. C=9

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2 years ago

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UkoKoshka [18]

Answer:

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3 years ago

Area of a circle is 80 cm². Work out the circumference of the circle.

GuDViN [60]

Answer:

The circumference of circle is: 31.714 cm

Step-by-step explanation:

Let C be the circumference of the circle

And A be the area of circle

It is given that:

$A = 80cm^2$

We have to find the radius first so that it can be used to find the circumference

The area of circle is given by the formula:

$A = \pi r^2$

Putting the value of area

$80 = 3.14 * r^2\\\frac{80}{3.14} = r^2\\r^2 = 25.477$

Taking square root on both sides

$\sqrt{r^2} = \sqrt{25.477..}\\r = 5.0475\ cm$

Now

$C = 2\pi r$

Putting the value of radius

$C = 2 * 3.14 * 5.05\\C = 31.714\ cm$

Hence,

The circumference of circle is: 31.714 cm

3 0

2 years ago