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2 years ago

Help me plzzzzzzzzzzzz

Mathematics

1 answer:

Galina-37 [17]2 years ago

8 0

Answer:

D. x = 5 or x = 10

Step-by-step explanation:

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The expression below is the factorization of what trinomial (5x+6)(3x-2)

Wittaler [7]

Multiply 5x to 3x and -2
multiply 6 to 3x and -2
15x^2-10x+18x-12

15x^2+8x-12

6 0

3 years ago

A countrys population in 1995 was 173 million in 1997 it was 178 million estamate the population in 2005 using the expontial gro

9966 [12]

Answer: the population in 2005 is

199393207

Step-by-step explanation:

The formula for exponential growth which is expressed as

A = P(1 + r/n)^ nt

Where

A represents the population after t years.

n represents the periodic interval at which growth is recorded.

t represents the number of years.

P represents the initial population.

r represents rate of growth.

From the information given,

P = 173 million

A = 178 million

t = 1997 - 1995 = 2 years

n = 1

Therefore

178 × 10^6 = 173 × 10^6(1 + r/1)^2 × 1

178 × 10^6/173 × 10^6 = (1 + r)^2

1.0289 = (1 + r)^2

Taking square root of both sides, it becomes

√1.0289 = √(1 + r)^2

1 + r = 1.0143

r = 1.0143 - 1 = 0.0143

Therefore, in 2005,

t = 2005 - 1995 = 10

A = 173 × 10^6(1 + 0.0143)^10

A = 173 × 10^6(1.0143)^10

A = 199393207

4 0

3 years ago

The area of a square garden is 200 m^2. How long is the diaginal

JulijaS [17]

Answer:

400

Step-by-step explanation:

6 0

3 years ago

In a standard television set the screen height is 0.75 times the screen width of a television set measures 42 inches along the d

Fed [463]

Here’s your answer lemme know if it’s not clear

3 0

3 years ago

Assume the radius of a circle is

Lisa [10]

Answer:

Step-by-step explanation:

They want you to see how radius is important. Just remember that one radian is one radius, that should help you see why radius is important.

They ask for the unit circle , that is a circle of one unit for the radius, which makes it super easy to calculate things for it, they ask what is the area, which is that famous formula, π $r^{2}$ , then they ask what's its circumference. which is that other famous formula 2πr

so to go all the way around a circle of one unit radius, it's 2π exactly or about 6.28..... units, call it meters, or feet or inches, it doesn't mater here.

the size of the circle doesn't matter here either, b/c we are using the radius , that relaationship doesn't change , all circles, what ever size , have this same relationship between the radius and radians. :P this is handy.

7 0

2 years ago