Ask question

Ask question

All categories

3 years ago

12

I NEED HELP ASAP Fanks luv

1 answer:

garik1379 [7]3 years ago

6 0

Answer:

P = 9; A = 3

Step-by-step explanation:

a)

1. ATC is similar to GDO

2. 12 / 3 = 4

3. Triangle A has to be divided by 4 to figure out what Triangle B is

4. GD = 3, GO = 4, DO = 2

5. P = 3 + 4 + 2 + 9

b)

1. B = 2, H = 3

2. Plug into given equation (A = 1/2bh)

3. A = 1/2*2*3

4. 1/2 * 6

5. A = 3

You might be interested in

What's a quarter of 46.5

SCORPION-xisa [38]

Answer:

11.625 or mixed number form 11 $\frac{5}{8}$

Step-by-step explanation:

divide 46.5 by 4

4 0

2 years ago

Brittany wants to make cookies for the whole fourth grade.One batch of dough makes 2 dozen cookies.There are 68 fourth graders a

zhannawk [14.2K]

Yea because 12+12 is only 24 so she will need a lot more. Cookie dough

3 0

3 years ago

Suppose a home improvement contractor is painting the walls and ceiling of a rectangular room. The volume of the room is 288 cub

ratelena [41]

Answer:

The minimum cost is $17.30c

Step-by-step explanation:

Given

$V = 288$ --- Volume

$C_1 = 0.06$ --- cost of wall paint

$C_2 = 0.16$ ---cost of ceiling paint

Required

Minimum cost of paint

The volume is calculated as:

$V =xyz$

Substitute 288 for V

$288 =xyz$

Make z the subject

$z = \frac{288}{xy}$

The surface area is calculated as:

$Area = 2(yz + xz) + xy$

Because xy represent the dimension of the ceiling and the opposite of the ceiling (the floor) will not be painted. Hence, it does not require a coefficient of 2

The cost is:

$C = 0.06 * 2(yz + xz) + 0.16 * xy$

Substitute $z = \frac{288}{xy}$

$C = 0.06 * 2(y*\frac{288}{xy} + x*\frac{288}{xy}) + 0.16 * xy$

$C = 0.06 * 2(\frac{288}{x} + \frac{288}{y}) + 0.16 * xy$

$C = 0.12(\frac{288}{x} + \frac{288}{y}) + 0.16 * xy$

$C = (\frac{34.56}{x} + \frac{34.56}{y}) + 0.16 * xy$

$C = (\frac{34.56}{x} + \frac{34.56}{y}) + 0.16 xy$

Differentiate w.r.t x and y

$C_x = -\frac{34.56}{x^2} + 0.16y$

$C_y = -\frac{34.56}{y^2} + 0.16x$

By comparison: $x = y$

Set them equal to 0

$C_y = -\frac{34.56}{y^2} + 0.16x=0$

$-\frac{34.56}{y^2} + 0.16x=0\\$

Substitute x for y

$-\frac{34.56}{x^2} + 0.16x=0$

$0.16x=\frac{34.56}{x^2}$

Cross multiply

$0.16x^3 = 34.56$

$x^3 = \frac{34.56}{0.16}$

$x^3 = 216$

Take the cube root of both sides

$x = \sqrt[3]{216}$

$x = 6$

$x=y= 6$

Substitute 6 for x and for y in $C = (\frac{34.56}{x} + \frac{34.56}{y}) + 0.16 xy$

$C = (\frac{34.56}{6} + \frac{34.56}{6}) + 0.16 * 6* 6$

$C = (\frac{2*34.56}{6}) + 5.76$

$C = 11.52 + 5.76$

$C = 17.28$

$C = 17.3$ --- approximated

8 0

3 years ago

Solve the equation v^3=80

Luba_88 [7]

Answer:

4.31

Step-by-step explanation:

Find the cube root of both sides of the equation.

$^3\sqrt{v^3}$ = $^3\sqrt{80}$

The cube root will cancel out the cubed in the variable.

v = $^3\sqrt{80}$

Find the cube root of 80. I rounded to the nearest hundredth.

v = 4.31

3 0

3 years ago

Read 2 more answers

Given the three points (0,3), (4,15), (5,33), determine the equation of the parabola they represent. State the direction the par

Nonamiya [84]

Answer:

D)The equation is f(x)=3x^2−9x+3, and the parabola opens upward.

3 0

4 years ago