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Phoenix [80]
3 years ago
15

Bert and Eamie ran the 100-meter dash. The difference of their times was 1.5 seconds. If Bert win the race in a time of 12.6 sec

onds, what was Eamie's time?
If Earnie's time is represented by E, write an equation and solve.
Mathematics
1 answer:
Bingel [31]3 years ago
5 0

Answer:

Ernie's time is 11.1 seconds

Explanation:

If Bert won the race with the time of 12.6 and the time difference is 1.5, this means Ernie's time was 1.5 seconds less than 12.6.

12.6

−

1.5

=

11.1

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HELP PLEASE
Radda [10]
Remark
The general equation for an ellipse is
\frac{x^2}{a^2}+ \frac{y^2}{b^2}=1 

At the center, the the point is 0,27

Solving for the 
\frac{0}{a^2} +  \frac{27^2}{b^2} = 1
or b^2= 27^2 * 1
Taking the square root of both sides 
b = 27

Now we need to use one more piece of information
The second point is (24,9) what that means is at the point x = 24, y = 9

Solving for that 
\frac{24^2}{a^2}+\frac{9^2}{27^2}=1

576/a^2 + 81/729 = 1    Subtract 81/729 from both sides
576/a^2 = 1 - 81/729 = 576/a^2 = (729 - 81)/729 = 648 /729

576/a^2 = 648/729     Cross multiply

648 a^2 = 729 * 576   Divide by 648
a^2 = 648            

Full equation for the ellipse and answer is

\frac{x^2}{648}+ \frac{y^2}{729} = 1


 

7 0
3 years ago
Read 2 more answers
WILL GIVE BRAINLIEST! PLEASE HELP!
cluponka [151]

Answer:

C

Step-by-step explanation:

Since the polynomial is of 3rd degree, it has 3 solutions.  The possibilities are 3 real solutions or 1 real solution and 2 imaginary solutions.

Therefore, C is the correct answer

7 0
3 years ago
For the dinner special at a restaurant, the customer must choose an appetizer, a salad, an entree, a side dish, and a dessert. H
Ostrovityanka [42]

Answer:

The number of possible dinner specials are 4368.

Step-by-step explanation:

The number of dinner specials = 5

They include appetizer, a salad, an entree, a side dish, and a dessert.

Possible items to choose from = 16.

They are 1. Appetizer Chicken strips, 2. Shrimp cocktail, 3. Buffalo wings, 4. Potato skins, 5. Salad Garden, 6. Caesar Entree T-bone steak, 7. Pot roast, 8. Lamb Side dish Corn, 9. Rice, 10. French fries, 11. Baked potato, 12. Pinto beans, 13. Dessert Chocolate cake, 14. Brownies, 15. Ice cream, 16. Apple pie

This is a combination problem requiring a combination solution with the following formula and steps:

C (n, r) =? C (n, r) = ?

n choose r

n (objects) =  16

r (sample) =  5

C (n, r) =? C (n, r) = ?

C (n, r) =C (14,5) C (n, r) =C (16,5)

=16! (5! (16−5)!) =16! (5! (16−5)!)

= 4368

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Answer:

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