3 years ago

Please help me someone

Mathematics

1 answer:

Airida [17]3 years ago

3 0

I think the last one but I could be wrong

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Evaluate the integral Integral from left parenthesis 2 comma 1 comma 2 right parenthesis to left parenthesis 6 comma 7 comma neg

White raven [17]

ANSWER

-9

EXPLANATION

We want to evaluate the line integral:

$\int_{(2,1,2)}^{(6,7,-5)}ydx+xdy+7dz$

The parametric equations for the line segment from (2,1,2) to (6,7,-5) is

$x = 2 + 4t$

$y= 1 + 6t$

$z= 2 - 7t$

This implies that:

$dx = 4dt$

$dy = 6dt$

$dz = - 7dt$

Our integral now becomes:

$\int_{0}^{1} (1 + 6t)(4)+(2 + 4t)(6) + 7( - 7)dt$

We simplify to get:

$\int_{0}^{1} 48t - 33dt$

This integral evaluates to:

$\int_{0}^{1} 48t - 33dt = - 9$

8 0

3 years ago

Jonah makes a snack mix to take with him on vacation. His favorite snack mix is 5 parts raisins and 4 parts peanuts. He wants to

Arisa [49]

(3) 5 parts raisins
(3) 4 parts peanuts

3 0

4 years ago

Evelyn swimming pool requires 3 quarts of a bacterial cleaning agent five times a month how many gallons of this agent will Evel

babunello [35]

Answer:

180 litres

Step-by-step explanation:

Quart: 1.1 litre

3 quarts used every 1 time its cleaned

cleaned 5 times 1 month

5 x 3=15

12 months in a year 15 x 12 = 180

7 0

3 years ago

At noon the outside temperature was –5°F. By 4 p.m. the same day, the temperature had dropped 13°F. What was the outside tempera

MAXImum [283]

-5 + (-13) = -18ºF
Good luck!

5 0

3 years ago

Read 2 more answers

HELP PLEASE BESITE Solve. 3x + 4 = 25 a) x = 9.7 b) x = 63 c) x = 7 d) x = 8

Rus_ich [418]

Answer is c. you subtract 4 to both sides and get 3x=21 and then divide 3 to both sides to get x=7

8 0

3 years ago

Read 2 more answers

Please help me someone​

Please help me someone