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2 years ago

Help me plz Plz help please

Mathematics

2 answers:

AysviL [449]2 years ago

6 0

You can try to use the internet for the answer to some of those questions.

Flura [38]2 years ago

5 0

1) 25cm2 = 150cm2 (not sure, sorry)
2) 3 • x = 1.8
x = 0.6
(I replaced the gap with the letter x)
3) 1 + 2 + 3 + 4 = 3 + 7 = 10
4) -5 + - 7 + 10 + 10 = -12 + 20 = 8
5) -3 (4 + a) = -12 - 3a

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Is 4(x+2y) and 8y+4x Equivalent

Illusion [34]

Yes.

When you use distributive property in first expression you’ll get 4x +8y. The second expression just rearranged those two terms.

8 0

2 years ago

1. 8y = 48<br> 2. q — 12 = 1<br> 3. 18 = a/2<br> 4. r/3 = 7<br> 5. 11 = m — 4

Nookie1986 [14]

Hello!

1. 8y = 48 => y = 48 : 8 => y = 6

2. q - 12 = 1 => q = 1 + 12 => q = 13

3. 18 = a/2 => a = 18 × 2 => a = 36

4. r/3 = 7 => r = 3 × 7 => r = 21

5. 11 = m - 4 => m = 11 + 4 => m = 15

Good luck! :)

6 0

3 years ago

Unsure how to do this calculus, the book isn't explaining it well. Thanks

krok68 [10]

One way to capture the domain of integration is with the set

$D = \left\{(x,y) \mid 0 \le x \le 1 \text{ and } -x \le y \le 0\right\}$

Then we can write the double integral as the iterated integral

$\displaystyle \iint_D \cos(y+x) \, dA = \int_0^1 \int_{-x}^0 \cos(y+x) \, dy \, dx$

Compute the integral with respect to $y$ .

$\displaystyle \int_{-x}^0 \cos(y+x) \, dy = \sin(y+x)\bigg|_{y=-x}^{y=0} = \sin(0+x) - \sin(-x+x) = \sin(x)$

Compute the remaining integral.

$\displaystyle \int_0^1 \sin(x) \, dx = -\cos(x) \bigg|_{x=0}^{x=1} = -\cos(1) + \cos(0) = \boxed{1 - \cos(1)}$

We could also swap the order of integration variables by writing

$D = \left\{(x,y) \mid -1 \le y \le 0 \text{ and } -y \le x \le 1\right\}$

and

$\displaystyle \iint_D \cos(y+x) \, dA = \int_{-1}^0 \int_{-y}^1 \cos(y+x) \, dx\, dy$

and this would have led to the same result.

$\displaystyle \int_{-y}^1 \cos(y+x) \, dx = \sin(y+x)\bigg|_{x=-y}^{x=1} = \sin(y+1) - \sin(y-y) = \sin(y+1)$

$\displaystyle \int_{-1}^0 \sin(y+1) \, dy = -\cos(y+1)\bigg|_{y=-1}^{y=0} = -\cos(0+1) + \cos(-1+1) = 1 - \cos(1)$

7 0

1 year ago

LINEAR EQUATIONS HELP ASAP

Stella [2.4K]

Answer:

-1/5

Step-by-step explanation:

(10 ,9) .....(40 , 3)

(9-3)/(10-40)=6/-30=-1/5

3 0

3 years ago

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You and your friends get to go to an amusement park. You have $75 for the day. The entrance fee is $49.95 and lunch is $11. You

solong [7]

Join QuestionCove for this, we have plenty of helpers willing to help!!

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2 years ago