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3 years ago

What is 3/7 times -2/5 ?

Mathematics

2 answers:

Art [367]3 years ago

7 0

Answer:

-6/35

Step-by-step explanation:

3/7×-2/5=-6/35

soldi70 [24.7K]3 years ago

3 0

The answer is -6/35.

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Answer:

13. B

14. A

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2 years ago

In the United States, the distribution of a female's height has a mean of 64 inches with a standard deviation of 3 inches. How m

inessss [21]

Answer:

The standard deviations is $\frac{-5}{3}$

Step-by-step explanation:"

Given mean female height = 64 inches and standard devaiton = 3 inches and 69 inches tall is Sally.

We know the distance of a data point from:

Z = $\frac{64-69}{3}$ = $\frac{-5}{3}$

So the standard deviations is $\frac{-5}{3}$

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3 years ago

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2 years ago

Write and simplify the integral that gives the arc length of the following curve on the given interval b. If necessary, use tech

LiRa [457]

Answer:

L = 4.103

Step-by-step explanation:

we have length of curve

$L = \int\limits^b_a {\sqrt{(f'(x))²+1} } \, dx$

where $f(x) = d/dx(3*in(x)) = 3/x$

substituting for f(x), we have $L = \int\limits^5_2 {\sqrt{(3/x)²+1} } \, dx$

(since the limit is 2≤ x ≤5)

solving, $L = \int\limits^5_2 {\sqrt{9/x²+1} } \, dx$

Simplifying this integral, we have

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8 0

3 years ago

Jenny thinks that the expression below is equal to x²-4. If you agree, show that she is correct. If you disagree, show that she

sergiy2304 [10]

Answer:

Jenny is wrong the correct answer is x²+ 4 - 4 x.

Step-by-step explanation:

Given that

(x-2)³∕x-2

(x-2)³∕(x-2) =(x-2) (x-2)²∕(x-2)

(x-2)³∕(x-2) = (x-2)²

As we know that

(a-b)² = a²+b² - 2 ab

(x-2)² = x²+ 2² - 2 ˣ 2 ˣ x = x²+ 4 - 4 x

(x-2)² = x²+ 4 - 4 x

It means that

(x-2)³∕(x-2) = (x-2)² = x²+ 4 - 4 x

So Jenny is wrong the correct answer is x²+ 4 - 4 x.

8 0

2 years ago