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irina [24]
3 years ago
13

Simplify the following expression by combining like terms 2x+7x^2-5x+8x^2

Mathematics
1 answer:
olga2289 [7]3 years ago
3 0

Answer:15x^2-3x

Step-by-step explanation:

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Krystal hiked 109 miles last year. Tanji hiked 12 times as many miles as Krystal. How many miles did Tanji hike last year
lapo4ka [179]

Answer:

1308

Step-by-step explanation:

109 x12

8 0
3 years ago
A game-show spinner has these odds of stopping on particular dollar values: 40% for $5, 25% for $100, 20% for $500, and 15% for
Yakvenalex [24]

Answer:

13÷ 23

Step-by-step explanation:

The computation of the odds of player winning is shown below;

For $5 it is 40%

And, for $100 it is 25%

so for total it is

= 40% + 25%

= 65%

And, the total percentage is 100%

So, the odds in favor is

65:100

13:20

Now for winning it would be 13÷ 23

5 0
3 years ago
Kirsty bought a new TV. The total cost of the TV was £360, in the sale it has 12.5% discount. What is the new price of the TV?
jasenka [17]
12.5% of 360 is 45
360-45 is 315
Answer is £315
3 0
3 years ago
Given six distinct pairs of gloves, 12 distinct gloves in all, how many ways are there to distribute two gloves to each of six s
noname [10]

a) if the two gloves someone receives might both be for the left hand or right hand.

b) if each sister gets one left and one right.

Soln:

a) So i thought about dissectng the problem first into finding the number of ways in which I could make pairs of gloves:

C(12, 2)

then I asked how many ways could the sets of gloves be assigned amongst the 6 sisters:

<span><span>6!</span><span>6!</span></span>

and taking the product of this would give me the amount of ways this could occur:

= C(12,2) * 6!

then for part b)

using this same idea except:

C(6,1) C(6,1) for the left and right glove each .

the C(6,1)*C(6,1)*6!

Right way to think them through?

7 0
3 years ago
Omar rented a truck for one day. There was a base fee of $14.99, and there was an additional charge of 80 cents for each kilomet
emmasim [6.3K]

Answer: 121 kilometers

Step-by-step explanation:

14.99 + .80x (-14.99) = 111.79 (-14.99)

.80x  (/.80) = 96.8 (/.80)

x = 121

4 0
2 years ago
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