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3 years ago

9+10= A.19 B.21 C.9 D.10

Mathematics

2 answers:

Juliette [100K]3 years ago

8 0

Ooo this one's a hard one... I think it's A. 19 ;) lol

snow_tiger [21]3 years ago

3 0

The answer is either A or B

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In problems 16-20, calculate the expected price in the year 2008 if you assume that there was a consistent 5% inflation rate and

Lena [83]

16. 72236.03
17. 2.87
18. 2.36
19. 9.29
20. 1.65
The exponential growth formula is as follows
$y=a(1+r)^{x}$ :
a is initial value
($27,225 17. gallon of gas, $1.08 18. dozen eggs, $0.89 19. movie admission, $3.50 20. mcdonalds hamburger, $0.62)
r is rate of increase (0.05)
x is time (2008-1988 = 20 years)
to solve plug in values for each one.
 $y=27225(1+0.05)^{20} = 72236.03$

$1.08(1+0.05)^{20} = 2.87$

$.89(1+0.05)^{20} = 2.36$

$3.50(1+0.05)^{20} = 9.29$

$.62(1+0.05)^{20} = 1.65$

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4 years ago

Use properties to evaluate (2)-27 3) QUESTION 3 -3 O O O O 27 -27

finlep [7]

No problem cool cool

3 0

3 years ago

Jade buys a blouse and a skirt for 34 of their original price. Jade pays a total of $31.50 for the two items. If the original pr

frutty [35]

Answer:The original price of the skirt was $16

Step-by-step explanation:18+16=34

3 0

3 years ago

A migrating bird flies 42 miles in 3 hours. How many miles does it fly in 5 hours?

Snezhnost [94]

42/3 = 14 miles per hour
14 * 5 = 70
Solution: 70 miles

4 0

3 years ago

Read 2 more answers

9. Water is added to two containers for 20 minutes. The equations below model the ounces of

Anit [1.1K]

Answer:

792 ounces

Step-by-step explanation:

At the time when the containers hold the same amount of water the value of y in the equations is the same, so

$\large 62x+48=-2x^2+80x+120$

Solve the quadratic equation:

$\large 62x+48=-2x^2+80x+120\Rightarrow 2x^2-80x-120+62x+48=0\\\\2x^2-18x-72=0\Rightarrow x=\frac{-(-18)\pm\sqrt{(-18)^2-4(2)(-72)}}{2*2}=\\\\=\frac{18\pm\sqrt{324+576}}{4}=\frac{18\pm\sqrt{900}}{4}=\frac{18\pm 30}{4}$

Take only the positive solution since x is positive (minutes)

$\large x=\frac{18+30}{4}=\frac{48}{4}=12$

Now, compute the amount of water y by replacing x = 12 in any of the two equations, for example in container A which is easier to calculate

y = 62(12) + 48 = 792

The correct answer is then 792 ounces

5 0

3 years ago