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2 years ago

Megan saved up her money and bought a model train. Each of the 8 cars on the train was the

Mathematics

1 answer:

Pani-rosa [81]2 years ago

8 0

Answer:

4.5 inches

Step-by-step explanation:

Each train is 4.5 inches because 3 feet is 36 inches. 36 divided by 8 equals 4.5

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Match the numbers to the correct number sentence 1. seven thousand, twenty-eight 1 7,828 2. seven thousand, two hundred eight 9,

kicyunya [14]

1. 7,028 2. 7,208 3. 7,288 4. 7,828 5. 7,088 6. 2,570 7. 2,507 8. 2,577 9. 2,057 10. 2,077 11. 9,009 12. 9,900 13. 9,090 14. 9,099 15. 9,999

8 0

3 years ago

DC = 10 What is the measure of angle ABD?

den301095 [7]

There is normally a shape or something to these problems

4 0

3 years ago

Please help! My teacher didn't go over this in the notes D:, as long as it gets answered before midnight im fine though

Crank

Answer:

15*9=135

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Please help me with the below question.

VMariaS [17]

By letting

$y = \displaystyle \sum_{n=0}^\infty c_n x^{n+r}$

we get derivatives

$y' = \displaystyle \sum_{n=0}^\infty (n+r) c_n x^{n+r-1}$

$y'' = \displaystyle \sum_{n=0}^\infty (n+r) (n+r-1) c_n x^{n+r-2}$

a) Substitute these into the differential equation. After a lot of simplification, the equation reduces to

$5r(r-1) c_0 x^{r-1} + \displaystyle \sum_{n=1}^\infty \bigg( (n+r+1) c_n + (n + r + 1) (5n + 5r + 1) c_{n+1} \bigg) x^{n+r} = 0$

Examine the lowest degree term $\left(x^{r-1}\right)$ , which gives rise to the indicial equation,

$5r (r - 1) + r = 0 \implies 5r^2 - 4r = r (5r - 4) = 0$

with roots at r = 0 and r = 4/5.

b) The recurrence for the coefficients $c_k$ is

$(k+r+1) c_k + (k + r + 1) (5k + 5r + 1) c_{k+1} = 0 \implies c_{k+1} = -\dfrac{c_k}{5k+5r+1}$

so that with r = 4/5, the coefficients are governed by

$c_{k+1} = -\dfrac{c_k}{5k+5} \implies \boxed{g(k) = -\dfrac1{5k+5}}$

c) Starting with $c_0=1$ , we find

$c_1 = -\dfrac{c_0}5 = -\dfrac15$

$c_2 = -\dfrac{c_1}{10} = \dfrac1{50}$

so that the first three terms of the solution are

$\displaystyle \sum_{n=0}^2 c_n x^{n + 4/5} = \boxed{x^{4/5} - \dfrac15 x^{9/5} + \frac1{50} x^{13/5}}$

4 0

2 years ago

when measuring ,100degrees Fahrenheit squat to 37.7777 degrees celsius. Round to the nearest thousandth

Gre4nikov [31]

Answer: 37.778 degrees

Step-by-step explanation:

The third digit to the right of the decimal is thousandths. If the next digit to the right of that is 5 or more, add one to the thousandths. Otherwise leave it as is. Just drop everything to the right of the place you rounded to.

7 is greater than 5, so add 1 to the 7 in the thousandths place and get

37.778

8 0

3 years ago