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Mekhanik [1.2K]
4 years ago
7

A child can explain that 3x2 represents three sets of two

Mathematics
1 answer:
pickupchik [31]4 years ago
7 0
A child can explain that 3×2 represents 3 sets of 2. Concrete operational, mathematical transformations. A child doesn't sneak a cookie when his mom outside because he thinks that she can see what he sees.
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HELP I NEED RIGHT ANWSER QUICK!!!
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What’s the question?????
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3 years ago
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The following figure is made of six semicircles with the same diameter, and of four congruent equilateral triangles represented
Oxana [17]

6 semicircles = 3 circles

The formula of the area of a equilateral triangle:

A_\triangle=\dfrac{a^2\sqrt3}{4}

We have a = |AE| = 3cm. Substitute:

A_\triangle=\dfrac{3^2\sqrt3}{4}=\dfrac{9\sqrt3}{4}\ cm^2

The formula of the area of a circle:

A_O=\pi r^2

We have 2r = |AE| =3cm → r = 1.5cm. Substitute:

A_O=\pi\cdot1.5^2=2.25\pi\ cm^2

The area of the figure:

A=4A_\triangle+3A_O\\\\A=4\cdot\dfrac{9\sqrt3}{4}+3\cdot2.25\pi=9\sqrt3+6.75\pi=6\dfrac{3}{4}\pi+9\sqrt3\\\\=\dfrac{27}{4}\pi+\dfrac{36\sqrt3}{4}=\dfrac{9}{4}\cdot3\pi+\dfrac{9}{4}\cdot4\sqrt3=\dfrac{9}{4}(3\pi+4\sqrt3)\ cm^2

7 0
3 years ago
Help me my grades are due tomorrow
n200080 [17]

Answer: 7p.m

Step-by-step explanation: what you would do is multiple 14 by half and that would be how long it took her.

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3 years ago
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What is the surface area of the rectangular prism below 7, 12, 14
Rus_ich [418]

What is the surface area of the rectangular prism below 7, 12, 14

Formula to find the surface area of the rectangular prism is:

2wl + 2lh + 2hw,

where w is width, l is length, and h is height of the rectangular prism.

Given dimension of the prism is 7, 12, 14.

So, w=7, l=12 and h= 14.

First step is to plug in the above values of l, w and h in the above formula to get the surface area. So,

Surface area of the rectangular prism =2wl + 2lh + 2hw

=2*7*12 + 2*12*14 + 2*14*7

=168+336+196

= 700

So, the surface area of the rectangular prism is 700 units².

3 0
4 years ago
PLEASE HELP!!!!<br>how to solve 9x^3-16x^2=0 by factoring<br> WILL GIVE BRAINLIEST IF CORRECT!!!!
andreev551 [17]

Answer:

x=5.3

Step-by-step explanation:

Graph each side of the equation. The solution is the x-value of the point of intersection.

x

≈

5.3

Hope this helps, can you now give me brainliest??

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