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son4ous [18]
3 years ago
6

Help me please, guys ​

Mathematics
2 answers:
devlian [24]3 years ago
3 0

Answer:

7.7

Step-by-step explanation:

The area of the wall is 4 * 2 = 8.

The radius of each clock is 0.3 / 2 = 0.15.

The area of all 4 circles is 4 * (πr²) = 4 * 3.14 * 0.15² = 0.3.

8 - 0.3 = 7.7

Fed [463]3 years ago
3 0

Answer:

6.9

Step-by-step explanation:

Total area of the wall is 4 x 2 =  8

Area for a circle is π x radius^2

Therefore total area of 4 clocks = 4 (π x 0.3^2)

Which is: 1.13...

Now we take away this answer from the area of the wall:

8 - 1.13... = 6.9 (1 d.p)

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Instructions
Naya [18.7K]

Answer:

yes

Step-by-step explanation:

youre trying to find when -1/4x + 3/2 = -x+ 3

so if you set it up like that and then solve for x you get 2

then, you know that 2 is your x value so just plug in x into one of the equations to get the y value

(i used -x+3 bc its easier)

-2+3=y

y= 1

so your solution is (2,1)

also heres the graph

5 0
3 years ago
Instructions: The polygons in each pair are similar. Find the missing side length.
adoni [48]

Answer:

20

Step-by-step explanation:

<u>25 </u>  =     <u> x</u>

20           16

(25*16)/20 = 20

4 0
3 years ago
Which determinants can be used to solve for x and y in the system of linear equations below?
zlopas [31]

Answer:

The right answer is the first answer

Step-by-step explanation:

Look to the attached file

Download docx
3 0
4 years ago
Read 2 more answers
Change to log form. <br> 7e^(-x)=0.01
sladkih [1.3K]
(0.00142857)=-x is your answer
3 0
3 years ago
Gary draws this sequence of patterns of white and grey squares. The sequence is continued. How many grey squares will there be w
zzz [600]

Answer:

20 gray squares

Step-by-step explanation:

Given

See attachment for squares

Required

Number of gray squares when white = 16

First, we calculate the equation that represents both squares.

<u>The white squares</u>

a = 2 --- initial

d = 4 - 2 = 6 - 4

d = 2 -- difference between successive gray squares

So, the nth term is:

W_n = a + (n - 1)d

W_n = 2 + (n - 1)*2

W_n = 2 + 2n - 2

W_n = 2n

<u>The gray squares</u>

a = 6 --- initial

d = 8-6=10-8

d = 2 -- difference between successive gray squares

So, the nth term is:

G_n = a + (n - 1)d

G_n = 6 + (n - 1) *2

G_n = 6 + 2n - 2

G_n = 4 + 2n

When the white squares is 16

W_n = 16 --- Calculate n

W_n = 2n

16 = 2n

8 = n

n = 8

To get the number of gray squares;

Substitute n = 8 in G_n = 4 + 2n

G_n = 4 + 2 * 8

G_n = 20

4 0
3 years ago
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