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3 years ago

Some one please help someone good at geometry because I’m failing :( plz makes sure it’s right

Mathematics

1 answer:

lana [24]3 years ago

7 0

Answer:

Step-by-step explanation:

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Simplify expression 2/3[3f+12]+f

neonofarm [45]

Answer:

= 3f + 8

Step-by-step explanation:

Given that:

= 2/3[3f+12]+f

By simplifying:

2/3 will be multiplied inside the bracket as follows:

= 2/3*3f + 2/3*12 + f

By cancelling the terms with each other we get:

= 2f + 24/3 + f

By simplifying the fraction we get:

= 2f + 8 + f

Adding like terms

= 3f + 8

This is the simplified expression.

i hope it will help you!

4 0

3 years ago

Write an equation in slope-intercept form of the line that passes through the given point and is parallel to the given equation.

Pani-rosa [81]

y = - 4x +3 when slope is -4

NOTE: Parallel lines have same slope.

For the line passing through point (-5, -6) the slope (m) = -4

Equation of that line:

(y - y1) = m (x -x1)

(y --6) = -4(x --5)

(y + 6) = -4(x + 5)

y + 6 = -4x -20

y = -4x -20 -6

y = -4x - 26

4 0

3 years ago

Could someone please check my answer and explain? im not sure if im doing this right

Juli2301 [7.4K]

Answer:

$V=1071.78\ cm^3$

Step-by-step explanation:

Given that,

The radius of the cone, r = 8 cm

The height of the cone, h = 16 cm

We need to find the volume of the cone. The formula for the volume of the cone is given by :

$V=\dfrac{1}{3}\pi r^2 h\\\\=\dfrac{1}{3}\times 3.14\times 8^2\times 16\\\\V=1071.78\ cm^3$

So, the volume of the cone is equal to $1071.78\ cm^3$ .

6 0

3 years ago

Squares with sides of length x are cut out of each corner of a rectangular piece of cardboard measuring 23 ft by 13 ft. The resu

trapecia [35]

Answer:

Step-by-step explanation:

Given that rectangle has side length 23x13 feet.

When squares of side x are cut from all the four sides we have dimensions as

23-2x and 13-2x and height x

Volume $=x(23-2x)(13-2x)$

$=x(299-72x+4x^2)\\=299x-72x^2+4x^3$

Use derivative test

First derivative V'(x) $V'(x)= 299-144x+12x^2\\V"(x) = -144+24x$

Equate I derivative to 0

We get approximate value of x = 2.671, 9.329

Since width is 13 feet it cannot be 9.329

Hence x = 2.671

V"(x) = -80 <0

So maximum volume is

$299x-72x^2+4x^3\\=299(2.671)-72(2.671)^2 +4(2.671)^3\\\\=361.186$

5 0

3 years ago

Write 47/6 as a mixed number

Svetach [21]

Answer:

47/6 = 7 5/6

Step-by-step explanation:

Take 47 and divide by 6

6*7 = 42

47-42 = 5

6 goes in 7 times with 5 left over

The left over part goes over the denominator

7 5/6

3 0

3 years ago