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4 years ago

Please help me solve this

Mathematics

1 answer:

Minchanka [31]4 years ago

7 0

Answer:

Step-by-step explanation:

Sean buys some T-shirts for $12 each and the same number of belts for $7.50 each. Write an expression in the simplest form that represents the total amount.

So n represents the same number for t-shirts and belts.

Therefore n x 12.50 + n x 7.50 OR n(12.50+7.50)

The problem the student made was that they multiplied 12 times n plus 7.50. They forgot to multiply n times 7.50.

An expression that represents the total amount spent is 12n + 7.50n

Hope this helps!

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Find the surface area of the composite figure

Gnoma [55]

Answer:

$=280$ $in^2$

Step-by-step explanation:

----------------------------------------

Let's find the surface area of the pink rectangular prism first.

$2*10=20+20=40$

$4*10=40+40=80$

$4*2=8+8=16$

$40+80+16=136$

The surface area for the pink rectangular prism is $136$ $in^2$ .

-------------------->>>>>

Now, let's find the surface area of the green rectangular prism.

$4*7=28+28=56$

$4*4=16+16=32$

$56+56+32=144$

The surface area for the green rectangular prism is 144 $in^2$ .

-------------------->>>>>

Now let's add the surface area of both rectangular prisms to find the surface area of the composite figure.

$136+144=$

$=280$ $in^2$

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Hope this is helpful.

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3 years ago

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Paladinen [302]

Answer:

3 1/3 feets

Step-by-step explanation:

Given that:

Height of aquarium = 1 3/4 feets

Area of aquarium = 5 5/6 ft²

The length of aquarium = x

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Area of a rectangle = Length * width

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Cross multiply :

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x = 3 1/3 feets

Hence, Length of the back of aquarium is 3 1/3 feets

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3 years ago

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Answer:

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Answer:

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