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egoroff_w [7]
2 years ago
10

Can someone help me pls

Mathematics
1 answer:
kirill [66]2 years ago
3 0

Answer:

25 ÷ 20

Step-by-step explanation:

The fraction is for divided (÷)

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A rectangle Is (2x-3) cm long and (x+7) cm wide. What Is It's area?​
Nikitich [7]

Answer:

Step-by-step explanation:

Length (L)= 2x - 3 cm

Breadth (b) = x + 7 cm

Area of the rectangle

= L * b

= ( 2x - 3)(x+ 7)

= 2x(x + 7) - 3(x + 7)

= 2x² + 14x  - 3x - 21

=( 2x² + 11x - 21) cm²

hope it helps

4 0
3 years ago
Read 2 more answers
The volume of a cone is approximately 423.9 cubic inches of the height is 5 what is the radius of the base
posledela
<span>Cone Volume = (<span>π<span> • r² •<span> h) ÷ 3

radius^2 = 3 * cone volume / PI * height

</span></span></span></span><span>radius^2 = 3 * 423.9 / 3.14159 * 5

</span>radius^2 = <span> <span> <span> 80.9590048351 </span> </span> </span>

radius = <span> <span> <span> 8.9977222026 </span> </span> </span>

rounds to 9




4 0
3 years ago
Find the surface area of the square pyramid (above) using its net (below).<br> 3
Murljashka [212]

Answer

33

Step-by-step explanation:

11 of the faces is a square.

\begin{aligned} \text{Area of a square} &= \text{side} \cdot \text{side}\\\\ &= 3 \cdot 3\\\\ &= {\blueD{9}} \\\\ \end{aligned}

Area of a square

​

 

=side⋅side

=3⋅3

=9

​

Hint #22 / 4

444 of the faces are triangles. Each triangle has the same base and height.

\begin{aligned} \text{Area of a triangle} &= \dfrac12 \cdot \text{base} \cdot \text{height}\\\\ &= \dfrac12 \cdot 3 \cdot 4\\\\ &= 6 \\\\ \end{aligned}

Area of a triangle

​

 

=

2

1

​

⋅base⋅height

=

2

1

​

⋅3⋅4

=6

​

The total area of these 444 triangles is 4 \cdot 6 = \greenD{24}4⋅6=244, dot, 6, equals, start color #1fab54, 24, end color #1fab54.

Hint #33 / 4

Let's add the areas we found to find the surface area.

\begin{aligned} \text{Surface area} &= \blueD{9}+ \greenD{24}\\\\ &= 33\\\\ \end{aligned}

Surface area

​

 

=9+24

=33

​

Hint #44 / 4

The surface area of this square pyramid is 333333 units^2

2

squared.

6 0
3 years ago
What is the quotient?
irakobra [83]
- 5 1/4 <span>÷ 2 3/4 =

= - 21/4 </span><span>÷ 11/4

= - 21/4 * 4/11

= - 21/11

= - 1 10/11
</span>
8 0
2 years ago
Question <br> 7 - (-3)=<br> PLEASE HELP ME!!!
Roman55 [17]

Answer:

10

Step-by-step explanation:

7-(-3)

=7+3

=10

Hope this is helpful

7 0
2 years ago
Read 2 more answers
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