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3 years ago

HELP PLEASE I HAVE 10 MINS

Mathematics

1 answer:

Alekssandra [29.7K]3 years ago

3 0

Answer:

I think C

Step-by-step explanation:

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A farmer has a rectangular field ro plow. The field has an area of 18,963 yards. The field is shown below. Fill in the missing l

cestrela7 [59]

Simply divide by 147

you get 129 yards

4 0

3 years ago

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Use the distributive property to write an expression equivalent to 9(47).

Ganezh [65]

Seperate the 47 into 2 different numbers at can be added together

40 +7 = 47

So now you have: 9(40+7)

This would become (9 * 40) + (9*7)

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4 years ago

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Use the substitution u = tan(x) to evaluate the following. int_0^(pi/6) (text(tan) ^2 x text( sec) ^4 x) text( ) dx

Rudiy27

If we use the substitution $u = \tan x$ , then $du = \sec^2 {x}\ dx$ . If you try substituting just $u$ and $du$ into the integrand, though, you'll notice that there's a $\sec^2x$ left over that we have to deal with.

To get rid of this problem, use the identity $\tan^2 x + 1 = \sec^2 x$ and substitute in the left side of the identity for the extra $\sec^2x$ , as shown:

$\int\limits^{\pi/6}_0 {tan^2 x \ sec^4 x} \, dx$
$\int\limits^{\pi/6}_0 {tan^2 x \ (tan^2 x + 1) \ sec^2 x} \, dx$

From there, we can substitute in $u$ and $du$ , and then evaluate:

$\int\limits^{\pi/6}_0 {tan^2 x \ (tan^2 x + 1) \ sec^2 x} \, dx$
$\int\limits^{\frac{1}{\sqrt{3}}}_0 {u^2(u^2 + 1)} \, du$
$\int\limits^{\frac{1}{\sqrt{3}}}_0 {u^4 + u^2} \, du$
$= \left.\frac{u^5}{5} + \frac{u^3}{3}\right|_0^\frac{1}{\sqrt{3}}$
$= (\frac{(\frac{1}{\sqrt{3}})^5}{5} + \frac{(\frac{1}{\sqrt{3}})^3}{3}) - (\frac{(0)^5}{5} + \frac{(0)^3}{3})$
$= \frac{1}{45\sqrt{3}} + \frac{1}{9\sqrt{3}} = \frac{6}{45\sqrt{3}} = \bf \frac{2}{15\sqrt{3}}$

8 0

3 years ago

A large van is being used for a picnic. There will be 8 people riding in the van, and there are 8 seats in the van (one of which

Julli [10]

Answer:

The people can seat themselves in 20160 different ways.

Step-by-step explanation:

Arrangements of n elements:

The number of arrangements of n elements is given by the following formula:

$A_{n} = n!$

In this question:

For the first seat, that is, the driver seat, 4 possible people can sit.

For the remaining 7 seats, the number of ways in which the people can sit is an arrangement of 7 elements. So

$T = 4*7! = 4*5040 = 20160$

The people can seat themselves in 20160 different ways.

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3 years ago

There are 68 apples in the school kitchen. The school needs 130 apples for all the students in grade 2. The school gets two boxe

WITCHER [35]

Answer:No they do not have enough they only have 82 apples

Step-by-step explanation:

7 0

3 years ago