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labwork [276]
3 years ago
12

Perform the operation, (-2x^2 – 2x + 1) +(-8x^2-7)

Mathematics
1 answer:
Citrus2011 [14]3 years ago
8 0

Answer: -10x^2 - 2x - 6

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If car can travel 50 miles in 55 minutes, how long will it take to travel 75 miles ?
mrs_skeptik [129]
First of all, if you are traveling more, then you will have to take more time to get there. So since the answer A is less than the original number 50 you can rule that choice out. Now to solve, you will put 50 over 55 such as this 50/55. This represents miles/minutes. So next you will put 75/x since we are trying to solve for x (minutes). Now our problem looks like this 50/55 times 75/x. To solve the answer you will need to cross multiply. You will multiply 75 and 55 together to get 4,125. (This will be your numerator, or top number) Next you will multiply 50 and x, this gives you 50. (This will be your denominator, or bottom number. Now you have 4,125/50. Divide your two numbers and you get 82.5! The answer is D. 82.5! Hope I helped!
7 0
3 years ago
Help I luv u if u help me!!!!
Pavlova-9 [17]
Perimeter is sum of all the sides.
SO, perimeter of that triangle will be
1/4 + 1/4 + 3/8.
The LCM of denominators (4,4,8) = 8.

Hence writing 1/4 = 2/8.

so,
Perimeter = 2/8+2/8+3/8 = (2+2+3)/8 = 7/8.

So, 7/8 ft is the perimeter of that triangle. :)
3 0
3 years ago
Read 2 more answers
Roberto wants to display his 18 sports cards in an album . Some pages hold 2 cards and others hold 3 cards .
nexus9112 [7]

Answer:

Step-by-step explanation:

Assuming Roberto wants to completely fill each page that he puts cards in, this function describes the number of 2-card pages, a, and 3-card pages, b.

2a + 3b =18

Ricardo can fill up 9 2-card pages, and 6 3-card pages.

a=9, b=0

We must add 2 3-card pages at a time,so that we have an even number for the 2-card pages:

a=6, b=2

Add 2 to b once more:

a=3, b=4

One more time:

a=0, b=6:

Thus, Ricardo can display his figures in the following page combinations:

a=9, b=0

a=6, b=2

a=3, b=4

a=0, b=6

Remember that a= number of 2-card pages and b=number of 3-card pages

There are 4 different ways that Ricardo can arrange his figures in terms of what kind of pages he uses. 

3 0
3 years ago
How many one thirds are in three fifths
drek231 [11]
3/5 divided by 1/3 is 9/5 or 1 4/5
Therefore the answer is 1 and 4/5
7 0
3 years ago
You start with $.50 at the beginning of the year. This amount doubles every month. How much will you have at the end of the 12th
Doss [256]
Take .50 and multiply it by 2 because it doubled. then multiply that by 6 or 12 to get your answer

4 0
3 years ago
Read 2 more answers
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