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2 years ago

I’m stupid and have no friends idc anyways can u help I’ll mark brainliest who ever helps me get it correct

Mathematics

1 answer:

earnstyle [38]2 years ago

6 0

Answer:

A I think

Step-by-step explanation:

Aaaaaaaaaaaaaa

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3^2 + (6 • 4^2)10 - 22

baherus [9]

9+(<span>6•16)10-22
9+(96)10-22
9+960-22
969-22
947
</span>

3 0

3 years ago

Read 2 more answers

Semicircles

Studentka2010 [4]

Answer:

The area of the shaded portion of the figure is $9.1\ cm^2$

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

The shaded area is equal to the area of the square less the area not shaded.

There are 4 "not shaded" regions.

step 1

Find the area of square ABCD

The area of square is equal to

$A=b^2$

where

b is the length side of the square

we have

$b=4\ cm$

substitute

$A=4^2=16\ cm^2$

step 2

We can find the area of 2 "not shaded" regions by calculating the area of the square less two semi-circles (one circle):

The area of circle is equal to

$A=\pi r^{2}$

The diameter of the circle is equal to the length side of the square

$r=\frac{b}{2}=\frac{4}{2}=2\ cm$ ---> radius is half the diameter

substitute

$A=\pi (2)^{2}$

$A=4\pi\ cm^2$

Therefore, the area of 2 "not-shaded" regions is:

$A=(16-4\pi) \ cm^2$

and the area of 4 "not-shaded" regions is:

$A=2(16-4\pi)=(32-8\pi)\ cm^2$

step 3

Find the area of the shaded region

Remember that the area of the shaded region is the area of the square less 4 "not shaded" regions:

$A=16-(32-8\pi)=(8\pi-16)\ cm^2$

---> exact value

assume

$\pi =3.14$

substitute

$A=(8(3.14)-16)=9.1\ cm^2$

8 0

3 years ago

Which one is Correct...? 2+2=4, 2+2=10 or 2+2=22?

myrzilka [38]

Answer:

2+2=4

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Pls help im really bad at math no links pls

lawyer [7]

Answer:

$-\frac{1}{2}$

Step-by-step explanation:

$-\frac{5}{6} +\frac{6}{18}$

$-\frac{5}{6} +\frac{2}{6}$ reduced

$\frac{-5+2}{6}$ transformed the expression to make it easier

$-\frac{3}{6}$ add

$-\frac{1}{2}$ reduce

8 0

1 year ago

25% of<br> what number is 21

Sergio [31]

21 is 25% of 84.......

8 0

2 years ago

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