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Grace [21]
3 years ago
6

Explain why x squared -8x+20 is always positive

Mathematics
1 answer:
Tpy6a [65]3 years ago
3 0

Answer:

to square a number you multiply the number by itself.

a positive number times a positive number is a positive number.

a negative number times a negative number is a negative number.

and if you are multiplying 2 numbers with the same sign they will always be a positive number.

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n a jar of coins, the ratio of nickels to dimes is 5:7. If the jar contains 350 dimes, how many nickels are there?
irina1246 [14]

Answer:

250 nickles

Step-by-step explanation:

Nickles and dimes are coins with different currency values. One nickel(N) is equal to 5 cents while one dime(D) is equal to 10 cents. The ratio of nickel:dime is 5:7, to put into the equation it will be:

N/D= 5/7

7N=5D   ---> 1st equation

There are 350 dimes, the equation will be:

D=350   ----> 2nd equation

We can find out the number of nickels by substitute the 2nd equation into the first. The calculation will be

7N=5D

N= 5D/7

N=5(350)/7

N=  250

4 0
3 years ago
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Roman55 [17]
I’m pretty sure it’s a
4 0
3 years ago
Read 2 more answers
Kevin cycles 18 miles every morning as part of his exercise. The time it takes him to complete the distance varies inversely as
Schach [20]

Hello, I am papaguy


Here is your answer


In terms of distance, the average speed for the total x miles you'd travel would be 50 miles per hour. However, if you include the fact that you spent less time traveling 60 miles per hour than 40, the average would be closer to 40 than 60 miles per hour.


Please note this is information you can use do not copy and paste.


Thank you papaguy And If I am wrong I will look into it!

8 0
3 years ago
Read 2 more answers
Write the sum as a product simplify the product-2 + -2 + -2 + -2 equals
yuradex [85]
-2+-2+-2+-2
-4+-4
=-8
hope this helps:)
6 0
3 years ago
A migrating bird flies 700 miles in 1414 hours. How many miles does it fly in 33 ​hours
Lisa [10]
In  1414 hours it covered 700 miles

In  1 hour it would have covered  (700/1414) mile

In 33 hours it will then cover :          700/1414  * 33 = 16.34

So in 33 hours it will cover ≈ 16.34 miles.
5 0
3 years ago
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