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2 years ago

What are the solutions to this equation? 16x2 + 9 = 25

Mathematics

2 answers:

Wewaii [24]2 years ago

5 0

Answer: x=-1,1

Step-by-step explanation:

16x^2+9=25 first we subtract 9 from the right and left sides.

16x^2=16

Divide both sides by 16 to isolate x

x^2=1

Take the square roots of both sides to isolate x completely.

x=1,-1

mash [69]2 years ago

3 0

Answer:

Step-by-step explanation:

Solution

= −1

= 1

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Answer: 13. -68

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16. -3

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18. -4

19. 1310 ft

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Step-by-step explanation:

13. 34*(-2)=-68

14. -9*(-4)=

-(9*(-4))=

-(-36)=36

15. 12*(-3)=-36

16. -12/4=-3

17. -20/(-2)=

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19. -1640*(-1)-(-330*(-1))=

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1 year ago

At a currency exchange rate, 3 U.S dollars can be exchanged for 5 Japanese Yin. How many U.S dollars will you receive for 1 Japa

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2 years ago

Anna wants to buy a car in two years and wants to have $10,000 for the purchase. How much will Anna need to deposit today in an

Brut [27]

Answer:

Anna will need to deposit $\$9,050.25$

Step-by-step explanation:

we know that

The compound interest formula is equal to

$A=P(1+\frac{r}{n})^{nt}$

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest in decimal

t is Number of Time Periods

n is the number of times interest is compounded per year

in this problem we have

$t=2\ years\\A=\$10,000\\ r=0.05\\n=12$

substitute in the formula above and solve for P

$10,000=P(1+\frac{0.05}{12})^{12*2}$

$10,000=P(1.0042)^{24}$

$P=10,000/(1.0042)^{24}$

$P=\$9,050.25$

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