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aivan3 [116]
3 years ago
14

How do you do this question?

Mathematics
1 answer:
nikitadnepr [17]3 years ago
5 0

Answer:

y = Ce⁻ᵗ − 7

Step-by-step explanation:

dy/dt = -y − 7

dy/dt = -1 (y + 7)

Separate the variables.

dy / (y + 7) = -1 dt

Integrate both sides.

ln│y + 7│= -t + C

Solve for y.

y + 7 = e⁻ᵗ⁺ᶜ

y + 7 = eᶜ e⁻ᵗ

eᶜ is another arbitrary constant, so:

y + 7 = Ce⁻ᵗ

y = Ce⁻ᵗ − 7

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Can anyone help me with this math please I will give brainlist
alexandr402 [8]

Answer:

4.5 > 4.420

0.67 < 0.8

0.82 = 0.820

62.4 > 6.24

0.13, 0.3, 0.303, 0.32

0.08, 0.8, 0.82, 8.2

24.54, 24.4, 24.304, 24.24

6.5, 6.25, 6.05, 6.007

Step-by-step explanation:

The most useful way to compare fractions is to add extra zeros at the end.

For example, 0.67 ___ 0.80.

0.80 is obviously bigger than 0.67.

In 24.4, 24.54, 24.304, 24.24, you can add extra zeros as well.

24.400, 24.540, 24.304, 24.240 (This makes it much easier to group the numbers, whether from largest to smallest or smallest to larger).

**REMEMBER TO REMOVE THOSE ZEROS AFTER FINDING YOUR FINAL ANSWER**

7 0
3 years ago
The sum of two numbers is with a ratio of 15:10. Find the larger number.
arsen [322]
Assume the sum is 100. The ratio of the two numbers is 15:10. This means that we can divide this indow 15+10, or 25 parts. Let us do that. Divide 100 into 25 parts and see how much is in each part. 100/25 is 4, meaning that there is 4 in each part. 15 parts will have 15*4, or 60. 10 parts will have 10*4, or 40. To confirm, add 40 and 60. It matches with what we started out with, 100. 


The two numbers, assuming the sum is 100, are 40 and 60. 60 is the greater value.
4 0
3 years ago
Estimate the time it would take you to drive 361 miles at 42 miles per hour. Round to the nearest hour.
polet [3.4K]

Answer:

It would take you 9 hours

Step-by-step explanation:

Speed (s) = Distance (d) / Time (t)

given that; Speed = 42 miles/hour

                 Distance = 361 miles

42 miles/hour = 361 miles / Time (t)

Time (t) * 42 miles/hour = 361 miles

Time (t) = 361 miles / 42 miles/hour

Time (t) = 8.59 hours

             ≈ 9 hours (to the nearest hour)

8 0
3 years ago
In circle A shown below, is a diameter and the measure of is 36°.
Stella [2.4K]
The inscribed triangle is a right triangle. The diameter of the circle served as the hypotenuse of the triangle.

Angle C is 90°
Angle D = 36°/2 = 18°

<span>The measure of ∡DBC?
</span>
180° - 90° - 18° = 72°

Remember that interior angles of a triangle sum up to 180°.
6 0
3 years ago
No files just type it in please and thank you
raketka [301]
9 is being added together 5 times, which is equal to the expression 9 x 5. The answer is A, 9 x 5
5 0
3 years ago
Read 2 more answers
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