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3 years ago

10 construct your

Mathematics

2 answers:

Serjik [45]3 years ago

4 0

Answer:

$15.00

Step-by-step explanation:

Bill Amount: $

Tip Percent: %

Divide By:

how many people?

Round up:

to whole dollars?

Answer:

Tip Total: $ 3

Total (Bill + Tip): $ 15

Solnce55 [7]3 years ago

3 0

All you have to do is multiply 12 times .20 when you get your answer you add that to 12 and that’s your answer

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The diameter of moon is 2160 miles . a model has a scale of 1 in. : 150 mi. what is diameter of model?

IRISSAK [1]

2,160/150 = 14.4
The diameter is 14.4 inches.

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3 years ago

What is the rule to

Daniel [21]

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3 years ago

Two cubes each of volume 27^3cm are joined end to end to form a solid. Find the surface area. of resulting solid.

vichka [17]

Given :-

Two cubes each of volume 27cm³ are joined to make a cuboid .

To Find :-

The surface area of the resulting solid .

Solution :-

Given that the volume of cube is 27cm³ . We know that the volume of cube is given by (side)³ .

So , if we assume each side to be a , then ,

$\longrightarrow$ a³ = 27cm³

$\longrightarrow$ a = ³√{27cm³}

$\longrightarrow$ a = ³√3³cm³

$\longrightarrow$ a = 3 cm .

Hence , if we join two cubes we will get a cuboid of length 3cm + 3cm = 6cm . (l)
The breadth would be 3cm .( b)
The height would be 3cm .(h)

See attachment for figure .

And as we know that TSA of cuboid is ,

$\longrightarrow$ TSA = 2( lb + bh + hl )

$\longrightarrow$ TSA = 2 ( 6*3 + 3*3 + 3*6) cm²

$\longrightarrow$ TSA = 2 ( 18 +9 +18 )cm²

$\longrightarrow$ TSA = 2 * 45cm²

$\longrightarrow$ TSA = 90 cm²

Hence the new surface area of the solid is 90cm² .

I hope this helps.

8 0

3 years ago

Someone help plz make sure it’s right plz will mark brainiest if it is:)

IRINA_888 [86]

Im pretty sure its C

8 0

3 years ago

A man pays an income tax Rs.840 paying 5 paisa per rupee. How much does he pay if rate is 8 paisa per rupee?

Elenna [48]

Answer:

Rs.1344

Step-by-step explanation:

Rs is the currency sign for rupee.

100 paisa = 1 rupee

⇒ 1 paisa = 0.01 rupee

If the man pays tax of Rs.840 at a rate of 5 paisa per rupee, then:

$\begin{aligned}\implies \textsf{Total income} &=\dfrac{\textsf{Income tax}}{\textsf{Rate}} \\\\&=\sf \dfrac{840}{0.05}\\\\ &= \sf Rs.16800\end{aligned}$

If the rate of tax is increased to 8 paisa per rupee, then:

$\begin{aligned}\implies \textsf{Income tax}&=\sf Income \times rate \\&=\sf 16800 \times 0.08\\ &= \sf Rs.1344\end{aligned}$

Therefore, the man will pay Rs.1344 income tax if the rate is 8 paisa per rupee.

3 0

1 year ago

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