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alex41 [277]
2 years ago
15

3x^2 + 16x + 21 = 0 Leave your answer as a fraction!

Mathematics
1 answer:
Pachacha [2.7K]2 years ago
5 0

Answer:

x=-3 or x=-7/3

Step-by-step explanation:

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What is 8,000,000 + 100,000 + 7,000 + 400 + 20 + 4 in standard form?
DIA [1.3K]

Answer:

8,107,424

Step-by-step explanation:

The 8,000,000 would stay the same, but the second zero would be switched by a one. The third number would still just be a zero. The other zero would turn into a seven, and the last three numbers would be 4, 2 and 4. You can also find the number by adding.

4 0
3 years ago
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I NEED HELP PLEASE HELP ME
CaHeK987 [17]

Answer:

6 donuts

Step-by-step explanation:

first divide the cost of the donuts by the amount of donuts per box

6 donuts:

2.10 ÷ 6 = .35 per donut

12 donuts

5.40 ÷ 12 = .45 per donut

18 donuts

7.20 ÷ 18 = .40 per donut

24 donuts

12 ÷ 24 = .50 per donut

3 0
3 years ago
7.50 on 250.00 is what percentage
natita [175]

Answer:

the answer is 3 zz

Step-by-step explanation:

5 0
3 years ago
CAN SOME ONE PLS HELP ME THIS IS REALLY HARD
Dmitry_Shevchenko [17]

Answer: 1.25 times as far

Step-by-step explanation:

This problem requires you to find something called the unit rate.

Getting the unit rate for Car A is very simple, and can be found to be 25mi/gal.

To find the unit rate for Car B, simply look at the second row.  Because the car can go 60 miles on 3 gallons of gas, divide both these numbers by 3 to get 20mi/gal.

Then, simply multiply both of these numbers by 11 to get 25 * 11 = 275, and 20 * 11 = 220.

Then, by doing 275/220, you get your answer: 1.25.

Hope it helps :) and let me know if you want me to elaborate.

4 0
2 years ago
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jenny borrowed $500 for 5 years at 4% interest compounded annually. what is the total amount she will have paid when she pays of
alexdok [17]
Use the formula for compound interest,  
  
A=P(1+ \frac{r}{n})^{nt}  
  
Where P is the starting amount (500$), r is the rate of interest (0.04), n is the number of times the interest is compounded per unit (1 per year), and t is the amount of time it is compounded (5 years).  
  
Now, plug it into the formula:  
  
A=500(1+ \frac{0.04}{1})^{5}  
  
Do the math, and your answer is she must pay <span>608.32$ when she pays her debts.</span>
5 0
3 years ago
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