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pentagon [3]
3 years ago
10

3y+3 (1-y)-y=-6PLEASE help

Mathematics
1 answer:
Murrr4er [49]3 years ago
7 0
3y+4+3y-y=-6
6y-y+4=-6
5y+4=-6
5y=-10
y=-2
If you have any questions let me know
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A carpenter constructed a rectangular sandbox with a capacity of 10 cubic feet. If the carpenter were to make a similar sandbox
jeka57 [31]

Answer:

(D)80 ft³

Step-by-step explanation:

The volume volume of the sandbox is = L × W × H

Where L = Length, W= width, H= Height.

A sandbox has the same shape as a cuboid.

A cuboid is a solid shape with rectangular base and sides. It has six rectangular faces if all sides are closed.

From the question,

LWH = 10ft³ ........................ (1).

If a similar sandbox twice as long, twice as wide and twice as high.

∴ L₍n₎= 2L, W₍n) =2W, H₍n₎ = 2H

Where L₍n₎, W₍n), H₍n₎ is the new Length,  new Width and  new Height of the similar sandbox.

∴L₍n₎ ×W₍n)× H₍n₎  = 2L × 2W × 2H

   and Volume of the new sandbox = L₍n₎ ×W₍n)× H₍n₎

 ⇒Volume of the new sandbox = 2 × 2 ×2 ×L×W×H

     Volume of the new sandbox = 8 × LWH....................(2)

    In equation(1) LWH = 10ft³.

     Substituting the value in equation(2)

    ∴Volume of the new(similar) sandbox= 8 × 10

       =80ft³.

Therefore the capacity of the second sandbox in cubic feet is 80.

The answer is option (D).

     

7 0
3 years ago
Simplify the expression below.<br> 5x² (3x + 2)
Westkost [7]

Step-by-step explanation:

5x^2(3x+2)

Distribute into 5x² into (3x +2).

15x^3+10x^2

The simplified expression is <em>15x³ + 10x²</em>

3 0
3 years ago
Read 2 more answers
Look at this expression.
g100num [7]
Multiply x<span> and </span>3

<span>Multiply x and 1</span>

<span>The x just gets copied along.</span>

<span>The answer is x</span>

x

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Because of the minus sign

<span>3x becomes - 3x</span>

<span>The answer is -3x</span>

<span>Multiply y and 2</span>

<span>Multiply y and 1</span>

<span>The y just gets copied along.</span>

<span>The answer is y</span>

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<span>2*y evaluates to 2y</span>

<span>-3*x-2*y evaluates to -3x-2y</span>

<span>The answer is -3x-2y-2</span>

<span>-3*x-2*y-2 evaluates to <span>-3x-2y-2</span></span>

<span><span>so the first one is right</span></span>

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4 0
3 years ago
Graph each equation.<br><br> y=-2x-1 <br><br> help please
yan [13]
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So go down 1 below 0.

Next, look at the slope.
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Look at the attachment. 

Starting from -1 (y-intercept), go down 2 (-2) then right 1 (1).
To complete the line above, keep the same value and reverse their sign/symbol. So -2/1 will be 2/-1. It goes up 2 then left 1.

I hope you understand and find this answer the most helpful! :)

8 0
3 years ago
Mindi is Simplifying the expression 9 - 5x + 8 - 4x. Here is her work:
babymother [125]
Mindi should have added the 8 and 9 to make the expression 17-9x
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2 years ago
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