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Alexxx [7]
3 years ago
11

Determine (without solving the problem) an interval in which the solution of the given initial value problem is certain to exist

. (enter your answer using interval notation.) t(t − 9)y' + y = 0, y(1) = 1
Mathematics
1 answer:
Olin [163]3 years ago
8 0

If either t=0 or t=9, the ODE has the trivial solution y=0, but y(1)=1\neq0. So any solution to the ODE that satisfies the initial condition can only exist on the interval 0.

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Wake up cereal comes in 2 types, crispy and crunchy. If researcher has 10 boxes of each, how many ways can this be done?
Yuliya22 [10]

Answer:

11 ways

Step-by-step explanation:

10 crunchy

9 crunchy 1 crispy

8 crunchy 2 crispy

7 crunchy 3 crispy

6 crunchy 4 crispy

5 crunchy 5 crispy

4 crunchy 6 crispy

3 crunchy 7 crispy

2 crunchy 8 crispy

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8 0
3 years ago
HELP pls!!
Rudiy27
<h3>Answer: Choice B) x = 65, y = 10</h3>

====================================================

Work Shown:

The upper pair of angles 60 degrees and (2x-y) degrees are supplementary angles. This is because of the parallel lines. Note how they are same side interior angles. Therefore, (2x-y) and 60 combine to 180 degrees like so

(2x-y)+60 = 180

2x-y = 180-60 ... subtract 60 from both sides

2x-y = 120 ... call this equation 1

-------

Similarly, (2x+y) and 40 also combine to 180

(2x+y) + 40 = 180

2x+y = 180-40 ... subtract 40 from both sides

2x+y = 140 ... call this equation 2

------

Line up equation 1 and equation 2. Then add straight down

\ \ \  2x-y = 120\\+ 2x+y = 140\\\hrule\\\\\\ \ \ \ 4x+0y = 260\\\\

That becomes 4x = 260 which solves to x = 65 when you divide both sides by 4.

------

If x = 65, then,

2x-y = 120

2(65)-y = 120

130 - y = 120

-y = 120-130

-y = -10

y = 10

or

2x+y = 140

2(65)+y = 140

130+y = 140

y = 140-130

y = 10

----------

Either way end up with x = 65 and y = 10

4 0
3 years ago
What is 1/9 x 4/5? please help
Anni [7]

Answer:

4/45

Step-by-step explanation:

Multiply the top by the top, and the bottom by the bottom:

\frac{1}{9} * \frac{4}{5} = \frac{4}{45}

4/45 cannot be reduced down anymore, therefore that is your answer.

<em>Hope this helps!!</em>

<em>- Kay :)</em>

8 0
2 years ago
Read 2 more answers
Find the area of the shaded region
AlexFokin [52]

Answer:

7\pi cm²

Step-by-step explanation:

First, find the area of the big circle with the formula A = \pir²

A = \pi(3)²

A = 9\pi

Now, we can find the areas of the smaller circles. Since they have the same radius, they are congruent (will have the same area)

A = \pir²

A = \pi(1)²

A = \pi

Now, we will subtract the areas of the smaller circles from the area of the big circle to find the area of the shaded region:

9\pi - \pi - \pi = 7\pi

So, the area of the shaded region is 7\pi cm²

5 0
3 years ago
Help thanks for brainliest btw
erik [133]

Answer:

b and and think 4

Step-by-step explanation:

6 0
2 years ago
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