The probability of getting a prize egg at an Easter Egg Hunt is 1/12 .How many Easter

It took everly 55 minutes to run a 10-kilometer race late weekend. If you know that 1 kilometer equals 0.621 miles, how many min

Ket [755]

Well this type of problems isn't exactly my strong suit, but I tried to come up with a solution, so my reasoning is as follows: we know that 1km is 0.621 miles, and the problem incites us to find how much time 1 mile takes, so we need to find how many kms are in a mile:
1km ---> 0.621 miles
<=> 1/0.621=1.610 km ---> 0.621/0.621 = 1 mile
so 1 mile = 1.610 km
Next we need to know how much time 1.610 km takes to run across
We know that:
10 km take 55 mins
and 1.610 = 10/6.211
so we need to divide 55 by the same value
55/6.211 = 8.855 mins
So 10 km ---> 55 mins
1.610 = 10/6.211 km ---> 55/6.211 = 8.855 mins

I hope I didn't mess up.
Hope I helped ^^

3 0

3 years ago

a store offer 20%of all items if x is the orginal purchase price,which expression represent the final price with the discount

Crazy boy [7]

The expression would be: Final Price = x-20%

8 0

3 years ago

Someone help please math homework

Sergeeva-Olga [200]

9. (x + 12)(x + 5)

10. (x + 4)(x + 10)

11. (x - 13)(x + 6)

12. (x + 11)(x - 7)

15. (x - 15)(x + 7)

16. (x - 7)(x + 7)

4 0

3 years ago

HELP I NEED THIS ANSWER ASAP

tester [92]

Answer:

10.4% or 13/125

Step-by-step explanation:

5 perfect squares in the set of numbers

13 odd numbers

(5/25) x (13/25) = 0.104

0.104 x 100 = 10.4%

i hope its right

4 0

2 years ago

Mary simplified an expression and got 12.9x10^4 for her answer in scientific notation. Her friend, Angela, is telling her that h

Novay_Z [31]

<u>Answer:</u>

Mary simplified an expression. $1.29 \times 10^{5}$ is correct representation in scientific notation.

<u>Solution:</u>

Given that Mary simplified an expression and got $12.9 \times 10^{4}$ for answer in scientific notation.

According to Angela, answer is incorrect. Need to find reason why Angela consider $12.9 \times 10^{4}$ as incorrect scientific notation and find the correct answer.

Let’s understand what is scientific notation of any number.

Scientific notation is a way of representing number between 1 and 10 including 1 and excluding 10 multiplied by appropriate power of 10.

According to Mary’s simplification the number she is getting is 12.9 but in scientific notation, number must be in between 1 to 10

So $12.9 \times 10^{4}$ is not correct scientific notation.

$\text { Let's rewrite } 12.9 \times 10^{4} \text { as } 1.29 \times 10^{1} \times 10^{4}=1.29 \times 10^{5}$

Now we got 1.29 which is in between 1 and 10 multiplied by $10^5$

Hence $1.29 \times 10^{5}$ is correct representation in scientific notation.

8 0

4 years ago