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love history [14]
4 years ago
8

What is the first step to solve the equation

Mathematics
1 answer:
Naddika [18.5K]4 years ago
8 0
The first step to solve the equation is to square both sides of the equation in order to get rid of square root in the left side:
\sqrt{x^2-25}^2=9^2
x^2-25=81

So, the correct answer is B.
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Cressida decided to save a part of her income in a savings account that compounds interest every four months. Her account balanc
hichkok12 [17]
The answer is "<span>the number of times the account compounds interest</span>".
The general formula is the following:
3,545(1+r)^n
wherein r is the interest rate compound each four months. 
Since there is 3*4 months in a year, then each year we compute the interest Three time, there where the factor 3 comes. 
6 0
3 years ago
Read 2 more answers
I need help with this.
luda_lava [24]

Answer:

12 mm

Step-by-step explanation:

Use Pyth Theor

9^2 + b^2 = 15^2

81 + b^2 = 225

b^2 = 144

sqrt 144 = 12

b = 12

5 0
2 years ago
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which of the following formulas would find the lateral area of a right cylinder where h is the height and r is the radius
vlada-n [284]

Answer:

B. LA=2\pi rh

Step-by-step explanation:

The lateral area of the right cylinder refers to the curved surface area.

The lateral area of the right cylinder does not include the two circular bases.

The lateral area is given by the formula;

LA=2\pi rh

The correct choice is B.

6 0
3 years ago
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How many meters tall is a door
S_A_V [24]

Answer: a standard door is about 2-2.10 meters

Step-by-step explanation:

8 0
3 years ago
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A growth medium is inoculated with 1,000 bacteria, which grow at a rate of 15% each day. What is the population of the culture 6
Leto [7]
<h2>Number of bacteria after 6 days is 2313</h2>

Step-by-step explanation:

Population after n days is given by

              P_n=P_0(1+r)^n

Initial population, P₀ = 1000

Increase rate, r = 15 % = 0.15

Number of days, n = 6

Substituting

             P_n=P_0(1+r)^n\\\\P_6=1000(1+0.15)^6\\\\P_6=1000(1.15)^6\\\\P_6=1000\times 2.313\\\\P_6=2313

Number of bacteria after 6 days = 2313

7 0
4 years ago
Read 2 more answers
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