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Kipish [7]
4 years ago
13

(7x^2-2x+5) - (3x^2+4x+10) simplify and show steps

Mathematics
1 answer:
mixas84 [53]4 years ago
5 0
7x^2 - 3x^2 = 4x^2
-2x+4X=4X
5+ 10 = 15
4x^2 + 4x + 15
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A function has cheating x's.<br> True<br> False
Assoli18 [71]
True
Hope this helps
Have a wonderful day or night
8 0
3 years ago
If im going 30 km per hour and i need to go 500 metres how long would it take
wolverine [178]

Answer:

1 minute

Step-by-step explanation:

1km = 1000m

30km = 30000m

30km ÷ 60 = 500m

it takes one hour to go 30km or a ratio of 30km to 1hour. 1hour is also 60minutes. 30:60

divide both sides by 60 gets 500m and the amount of time to go that distance 1 minute

8 0
2 years ago
Read 2 more answers
Adam got 56 out of 84 correct in his test. What fraction of the marks did he get wrong? Give your answer in its simplest form.
postnew [5]

Answer:

correct = 56

wrong = 84 - 56

= 28

28/84 = 1/3

7 0
3 years ago
Read 2 more answers
at the party 2/5 of the pizzas ordered had pepperoni .The kids ate only 1/3 of the pepperoni pizzas, while the parents ate all o
kodGreya [7K]
Here is the solution for the given problem above.
Given that in the whole pizza, 2/5 of it is pepperoni (which makes 3/5 of the pizza has different flavor). What we are going to find is how much of all the pizza ordered was eaten by the kids, since only 1/3 of the pepperoni pizza is eaten by them. So to solve this, we will multiply 1/3 by 2/5 and the answer would be 2/15. Therefore, the answer is 2/15 of the pizza was eaten by the kids.
6 0
3 years ago
Ryan spills some soda and neglects to clean it up. When leaving for spring break, Ryan notices some ants on the sticky mess, but
Charra [1.4K]

Answer:

Ryan saw 30 ants when he left for spring break.

Step-by-step explanation:

The equation for the number of ants has the following format:

P(t) = P(0)e^{rt}

In which P(t) is the population after t days, P(0) is the initial population and r is the growth rate.

Upon returning 17 days later, Ryan counts 3960

This means that P(17) = 3960. So

P(t) = P(0)e^{rt}

3960 = P(0)e^{17r}

The next day there are 5280 ants.

This means that P(18) = 5280

So

P(t) = P(0)e^{rt}

5280 = P(0)e^{18r}

From above, we have that

P(0) = \frac{3960}{e^{17r}}

Replacing

5280 = P(0)e^{18r}

5280 = \frac{3960e^{18r}}{e^{17r}}

3960e^{r} = 5280

e^{r} = \frac{5280}{3960}

\ln{e^{r}} = \ln{\frac{5280}{3960}}

r = \ln{\frac{5280}{3960}}

r = 0.2877

Find the number of ants that Ryan saw when he left for spring break

P(0) = \frac{3960}{e^{17r}}

P(0) = \frac{3960}{e^{17*0.2877}}

P(0) = 30

Ryan saw 30 ants when he left for spring break.

8 0
3 years ago
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