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Step2247 [10]
3 years ago
12

Solve the equation by Square Root Method 16n^2-25=0

Mathematics
2 answers:
lana [24]3 years ago
6 0

Answer:

n = ±(5/4)

Step-by-step explanation:

The first step is to re-write the equation and make n^2 the subject of the formula; n^2 =25/16. The final step is to take square roots on both sides of the equation and keeping in mind the ± sign

Anton [14]3 years ago
5 0

Answer:

Step-by-step explanation:

16n^2-25=0

16n^2=25

n^2=25/16

n=+-5/4

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Answer
timurjin [86]

Answer:

Betty = $600

Step-by-step explanation:

3/4 of Alice's salary is the same as 1/2 of Betty's salary

(3/4)a = (1/2)b

multiply both sides by 2

(3/2)a = b

Alice earns $200 less than Betty

b - a = 200

Substitute for b

(3/2)a - a = 200

(1/2)a = 200

multiply both sides by 2

a = 400

b = (3/2)400

b = 600

5 0
3 years ago
How do you solve this problem<br> (2x+8)2=64
asambeis [7]

Answer:

12

Step-by-step explanation:

If (2x+8)2 = 64, then I would solve it by making sure the numbers in the parentheses equal 32. This is because it would get multiplied by 2 after you find the answer and 32 x 2 is 64. So what times 2 is 24? 12. 12 x 2 is 24, plus 8 is 32, and multiply 32 by 2 and you get 64 :) I'm not the best at explaining btw ;-;

7 0
3 years ago
Read 2 more answers
Circle A has a radius of 9 centimeters and Circle B has a diameter of 19 centimeters. What is the relationship between the circu
IRISSAK [1]

Answer:

18:19

Step-by-step explanation:

Given that,

The radius of circle A = 9 cm

The diameter of circle B = 19 cm

We know that,

Radius = diameter/2

The radius of circle B = 19/2 cm

The circumference of circle A is :

C_A=2\pi r_A ....(1)

And that of circle B is :

C_B=2\pi r_B ....(2)

Dividing equation (1) and (2) :

\dfrac{C_A}{C_B}=\dfrac{2\pi r_A}{2\pi r_B}\\\\=\dfrac{r_A}{r_B}\\\\=\dfrac{9}{\dfrac{19}{2}}\\\\\dfrac{C_A}{C_B}=\dfrac{18}{19}

Hence, the ratio of circumferences of Circle A and Circle B is 18:19.

7 0
3 years ago
Solve and reduce to lowest terms:<br> 5x2/7
bagirrra123 [75]

Answer:

10/7

Step-by-step explanation:

5*2/7=10/7

6 0
3 years ago
Read 2 more answers
Question 1 (1 point)<br> Simplify:(3a b – 7ab² + 11a4b3)<br> - (-2ab² + 3a b + 6a4b3)
Debora [2.8K]

Answer:

-5ab^2+5a^4b^3

5 0
4 years ago
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