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3 years ago

Someone please help! I’ll give brainliest!!

Mathematics

1 answer:

anyanavicka [17]3 years ago

6 0

Answer:

The answer is 65.97 yd^3

Step-by-step explanation:

The volume of a cone is: v = $\pi r^{2}\frac{h}{3}$

So, v = $\pi$ (3^2)(7/3) = 65.97345 yd^3

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La fórmula para calcular la distancia de "d" en pies, necesaria para detener un auto sobre una superficie con nieve es d=1/6 x^2

spin [16.1K]

D=1/6 x^2
150=1/6 x^2
*6 *6
900=x^2

8 0

2 years ago

Describe and correct the error(s) made in each of the problems below.

ladessa [460]

Answer:

$\displaystyle \frac{1-x}{(5-x)(-x)} =-\frac{x-1 }{ x(x-5)}$

$\displaystyle \frac{5}{s}\times \frac{2}{5} =\frac{2}{s}$

Step-by-step explanation:

<u>Errors in Algebraic Operations </u>

It's usual that students make mistakes when misunderstanding the application of algebra's basic rules. Here we have two of them

When we change the signs of all the terms of a polynomial, the expression must be preceded by a negative sign
When multiplying negative and positive quantities, if the number of negatives is odd, the result is negative. If the number of negatives is even, the result is positive.
Not to confuse product of fractions with the sum of fractions. Rules are quite different

The first expression is

$1-x / (5-x)(-x)=x-1 / x(x-5)$

Let's arrange into format:

$\displaystyle \frac{1-x}{(5-x)(-x)} =\frac{x-1 }{ x(x-5)}$

We can clearly see in all of the factors in the expression the signs were changed correctly, but the result should have been preceeded with a negative sign, because it makes 3 (odd number) negatives, resulting in a negative expression. The correct form is

$\displaystyle \frac{1-x}{(5-x)(-x)} =-\frac{x-1 }{ x(x-5)}$

Now for the second expression

$5/s+2/5=2/s$

Let's arrange into format

$\displaystyle \frac{5}{s}+\frac{2}{5} =\frac{2}{s}$

It's a clear mistake because it was asssumed a product of fractions instead of a SUM of fractions. If the result was correct, then the expression should have been

$\displaystyle \frac{5}{s}\times \frac{2}{5} =\frac{2}{s}$

6 0

2 years ago

HELP PLSSSSSSSSSSSSSS!!!!!!!!!!!!!! I will Give Brainlyest!!!

Ymorist [56]

Answer:

$\frac{21}{8}$

Step-by-step explanation:

$6\frac{1}{4}=6+\frac{1}{4}=\frac{25}{4}\\\\3\frac{5}{8}=3+\frac{5}{8}=\frac{29}{8}\\$

finally

$6\frac{1}{4}-3\frac{5}{8}=\frac{25}{4}-\frac{29}{8}=\frac{21}{8}$

5 0

3 years ago

Read 2 more answers

There are 6 apples in a bowl containing 8 pieces of fruit what is the ratio of apples to the total number of fruit. If two piece

snow_lady [41]

So I think it’s 6:2 bc 6 apples and two oranges make 8 so the 8 pieces of fruit are the apples and oranges meaning that it probably put that to throw you off

4 0

2 years ago

Winning number is increased by 5% the result is 25 was the original number to the nearest 10th

timofeeve [1]

The original number to the nearest tenth is 23.8

8 0

3 years ago