All categories

2 years ago

Week 12 Please answer with clear instructions so that i can apply this to other questions

Mathematics

1 answer:

OLEGan [10]2 years ago

3 0

Answer:

$94.2m^2$

Step-by-step explanation:

The formula for SA of a cone is...

$\pi (r)(h)+\pi (r)^2$

Fill in what you have

$\pi (3)(7)+\pi (3)^2$

Pi is 3.14 for our purposes

$\pi (3)(7)+\pi (3)^2\\3.14(3)(7)+3.14(3)^2$

Then solve

$21(3.14)+9(3.14)\\\\94.2m^2$

You might be interested in

Help please!!!

katovenus [111]

Answer:

x = $\frac{7+\sqrt{47}\times i }{4}$

Step-by-step explanation:

<u>To solve quadratic systems,we always substitute one variable in terms if the other and then solve the equation.</u>

x + 2y = 6 ---------------(1)

y - 5 = $(x-2)^{2}$ ---------------(2)

y = $(x-2)^{2}$ + 5 ---------------(3)

Substitute (3) in (1) ,

x + 2( $(x-2)^{2}$ + 5 ) = 6

$(a + b)^{2}$ = $a^{2} + 2ab + b^{2}$

x + 2( $x^{2} - 4x + 4$ + 5 ) = 6

$2x^{2} - 7x + 12=0$ --------------(4)

The roots of the quadratic equation $ax^{2} +bx+c$ is

x = $\frac{(-b) + \sqrt{(-b)^{2}-4 \times ac } }{2 \times a}$ -----------(5)

According to equation (5),solution of (4) is

x = $\frac{7 + \sqrt{(-7)^{2}-4 \times 24 } }{2 \times 2}$

x = $\frac{7+\sqrt{49-96}}{4}$

x = $\frac{7+\sqrt{47}\times i }{4}$

4 0

3 years ago

Here is the dialations that i need help on

Rasek [7]

I really don’t know sorry bro

8 0

3 years ago

Read 2 more answers

PLEASE HELP!! I’ll mark you as brainliest if you’re correct

s344n2d4d5 [400]

The answer must be A or B. Since the person is trying to pay for AS MUCH people as possible. So, therefore the answer is A.

5 0

3 years ago

Read 2 more answers

In ΔNOP, o = 130 cm, ∠O=61° and ∠P=40°. Find the length of n, to the nearest 10th of a centimeter.

Amiraneli [1.4K]

Answer:

145.9

Step-by-step explanation:

Gave up on delta math.

4 0

2 years ago

Read 2 more answers

There are 6 blades on each windmill. How many total blades are on 7 windmills? Use a five fact to solve

Serggg [28]

Answer:

42 Blades

Step-by-step explanation:

So 6 blades on each windmill

6=1 Windmill

so 7 windmills

so do

7 times 6 = 42 Blades

5 0

2 years ago

Read 2 more answers