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3 years ago

Find the exact value of tan 8

Mathematics

1 answer:

Lynna [10]3 years ago

6 0

Answer:

the answer is A

Step-by-step explanation:

by pythagoras we can find out the value of the perpendicular/right angled side i.e

$\sqrt{119}$

and tan theta is perpendicular/base so we get the given answer

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Find the total surface area of the cuboid

vivado [14]

Answer:

A = 148 cm^2

Step-by-step explanation:

To calculate the surface area of the cuboid we use the following equation

A = 2 x (lh + lw+ hw) (l: length, w: width, h: height)

A = 2 x (6*5 + 6*4 + 5*4)

A = 2 x (30 + 24 + 20)

A = 2 x 74

A = 148 cm^2

7 0

3 years ago

5(4+2x) - (8x-12)=68<br> pls help lol , bad at math

svlad2 [7]

The answer is, 22x + 58

5 0

4 years ago

Read 2 more answers

What’s the base of a triangle if the area is 180cm but the height is 20

Lena [83]

Answer:

the base is 18cm

Step-by-step explanation:

A=1/2*bh

180=1/2*(20)b

180=10b

b=18

You're welcome :)

6 0

3 years ago

Read 2 more answers

Which expression could be substituted for y in the second equation to find the value of x?

EastWind [94]

value of x is $x=-\frac{29}{4}$ and value of y is $y=-\frac{9}{2}$

Step-by-step explanation:

We need to find Which expression could be substituted for y in the second equation to find the value of x

The given equations are:

$2x-y=-10\,\,\,(1)2x - 3y= -1\,\,\,\,(2)$

For putting value of y in second equation, we will find from equation 1

From equation 1:

$2x-y=-10\\-y=-10-2x\\y=10+2x$

Putting value of y i.e y=10+2x in equation (2) to find value of x

$2x-3y=-1\\2x-3(10+2x)=-1\\2x-30-6x=-1\\-4x=-1+30\\-4x=29\\x=\frac{29}{-4}\\x=-\frac{29}{4}$

So, now finding value of y by putting value of x= -29/4 in eq(1)

$2x-y=-10\\2(-\frac{29}{4})-y=-10\\-\frac{29}{2}-y=-10\\-y=-10+\frac{29}{2}\\ -y=\frac{-20+29}{2}\\ -y=\frac{9}{2}\\ y=-\frac{9}{2}$

So, value of x is $x=-\frac{29}{4}$ and value of y is $y=-\frac{9}{2}$

Keywords: System of equations

Learn more about System of equations at:

#learnwithBrainly

6 0

4 years ago

a map has a scale of 1.5 inches = 9 miles. On the map, two towns are 4 inches apart. What is the distance, in miles between the

Oksanka [162]

Answer:

Step-by-step explanation:

i multpliy 9x4=36

7 0

3 years ago