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3 years ago

Miles has a box of 100 cute she also has a bag of 70 cubes how many trains of 10 can she make

1 answer:

4 0

17 I think because u add the 100 to 70 which is 170 then you divide it by 10 to see how many trains made of 10 blocks can come out of 170 blocks

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I need help ASAP please. It's a contest

igor_vitrenko [27]

Answer:

3.25

Step-by-step explanation:

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2 years ago

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a herd of 86 horses has 75 white and some black horses.what is the ratio of black horses to white horses?

Naddik [55]

Answer:11 black horses : 75 white horses

Step-by-step explanation:

we know thw white horses and how many there are but we dont know how many black ones so u take the number of white horses and subtart it from the total and get the number of black horses

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3 years ago

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Regular triangular pyramid has 6 cm long base edge and slant height k=9 cm. Find the lateral area of the pyramid.

gregori [183]

Answer:

81 cm²

Step-by-step explanation:

Since, the lateral face of a triangular pyramid is a triangle,

Given,

The base edge or the base of one lateral face of pyramid, a = 6 cm,

And, the slant height or the height of the face, k = 9 cm,

Thus, the area of one lateral face of the pyramid,

$A=\frac{1}{2}\times a\times k$

$=\frac{1}{2}\times 6\times 9$

$=\frac{54}{2}$

$=27\text{ square cm}$

We know that, a Regular triangular pyramid has 3 lateral faces,

Hence, the total lateral area of the pyramid,

$L.A.=3\times\text{ The area of one lateral face}$

$=3\times 27$

$=81\text{ square cm}$

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3 years ago

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Bingel [31]

Answer:

The correct answer is the tor mar nada tor buda tor buni ami chai

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3 years ago

How to integrate ∫㏑x/χ<br> from 1 to e

Natali [406]

$\int_1^e\dfrac{\ln x}{x}dx,~\text{if}~u=\ln x\to x=e^u\to dx=e^udu\\\\\text{So, finding the new limits:}\begin{cases}x=1\to u=\ln1\to u=0\\x=e\to u=\ln e\to u=1\end{cases}\\\\
\int_1^e\dfrac{\ln x}{x}dx=\int_0^1\dfrac{u}{e^u}e^udu=\int_0^1u\,du=\left[\dfrac{u^2}{2}\right]_0^1=\dfrac{1^2}{2}-\dfrac{0^2}{2}=\dfrac{1}{2}\\\\
\boxed{\int_1^e\dfrac{\ln x}{x}dx=\dfrac{1}{2}}$

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3 years ago