Suppose the population of a certain city is 5769 . It is expected to decrease to 4963 in 50 years. Find the percent decrease.

Answers

Answer 1

Answer:

Answer:

≈ 13.98%

Step-by-step explanation:

As the total population is 5769 in the initial period, you must find the percentage that repesents 4963 that is the expected population.

4963/5769=0.8602

Then you multiply it by 100 to transform it into percentage

0.8602*100=86.02%

Then it's just necesary to subtract that from 100% and that numbers is the percentage of decrease

100% - 86.02% = 13.98%

Also you can say that is approximately 14%

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Mrs. Curtis wants to buy online tickets for a concert. Two options are given here.Option 1: $53 for each ticket plus a shipping fee of $10

Option 2: $55 for each ticket and free shipping

What is a system of equations to represent the costs of the tickets?

Express your equations in the form of y=mx+by=mx+b where x is the number of tickets purchased and y is the total cost.

Enter your equations in the boxes.

Answers

Option 1- y= 53x+10
Option 2- y= 55x
55x+10=53x
-53x -53x
2x=10
x=5

Answer:

equation 1 is y=53x + 10

equation 2 is y=55x

Step-by-step explanation:

Provide an appropriate response.39) Find a set of 7 scores that has the same mean but a smaller standard deviation than the
set {65, 71, 77, 80, 82, 90, 96}.

Answers

You don't even have to look up the definition of 'standard deviation'. You only
have to remember that 'smaller standard deviation' means 'less spread-out'.

First, let's find the mean (average). It's not supposed to change:

1/7th of (65 + 71 + 77 + 80 + 82 + 90 + 96) = 561/7 = 80 and 1/7 .

Now, just pick 7 scores that total 561 and are all bunched up.

The easiest way would be 80, 80, 80, 80, 80, 80, 81 .
But that's so easy that it feels like cheating.

Let's say 77, 78, 79, 80, 81, 82, and 84 .

Factor completely 2x2 − 6x − 56.(2x − 14)(x + 4)
(x − 7)(2x + 8)
2(x − 7)(x + 4)
2(x − 4)(x + 7)

Answers

The factors of the given expression are (x-7)(2x+8). Therefore, option B is the correct answer.

The given expression is 2x²-6x-56.

How do factor the quadratic expression?

Factoring an expression means rewriting it as the product of factors.

Write each term as the prime factorization.
Identify the factors that all of the terms have in common.
Multiply those common factors.

Now, the factorisation of the given expression is as follows:

By splitting the middle term method we can write the expression 2x²-6x-56 as 2x²-14x+8x-56.

=2x(x-7)+8(x-7)

=(x-7)(2x+8)

Therefore, option B is the correct answer.

To learn more about the factorisation visit:

brainly.com/question/13496719.

#SPJ2

2x^2 - 6x - 56
2 (x^2 - 3x - 28)

2 (x - 7)(x + 4)

What is 15% of 120 and how do you do it

Answers

15%*120=15/100*120=15/10*12 ( u can cancel 1 0 from 100 &120)=3/2*12( by cancelling by 5)=3*6( by cancelling by 2 )=18 ans,,

Prove the following theorem indirectly. We will give you a start. Prove that a triangle cannot have two right angles. A triangle cannot have two right angles. Suppose a triangle had two right angles.

Answers

A triangle that has no two right angles is called a scalene triangle. If the triangle has two right angles, it is called isosceles triangle. A triangle with equal sides is called an equilateral triangle.

Urgent stuff, pls:))).Can someone give me polynomial with a degree of 3 or higher

Answers

A polynomial is a function that, given an input $x$ , returns as output a sum of powers of $x$ , each multiplied by some coefficient. Note that 1 is a power of $x$ , since $x^0=1$

The degree of the polynomial is the highest exponent of $x$ appearing in the sum.

So. if you want to build a polynomial with degree 3 or higher, you have to:

1 - Choose the degree of the polynomial to be 3 or higher, for example 5.

2 - Consider all the powers of $x$ , with exponents up to 5: $1,x,x^2,x^3,x^4,x^5$

3- Assing a coefficient to every power. We usually write $a_n$ to indicate the coefficient of $x^n$ . You can choose any number you like. So, for example, you can choose

$a_0 = 3, a_1 = 0, a_2 = -5, a_3 = 12, a_4 = -1, a_5 = 1$

4 - Multiply each power by its coefficient, and sum all the pieces:

$a_0x^0 + a_1x^1 + a_2x^2 + a_3x^3 + a_4x^4 + a_5x^5$

$3\cdot 1 + 0\cdot x^1 + (-5)\cdot x^2 + 12\cdot x^3 + (-1)\cdot x^4 + 1\cdot x^5$

$3 -5x^2 + 12x^3 -x^4 + x^5$

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Alma wants to prove to her parents that listening to music while she studies for her tests will help her get better grades. She decides to ask 15 of her friends if they listen to music while they study for tests and what their grades are. She finds that her friends who have high grades also listen to music while they study for tests. She tells her parents that she has proven that listening to music while studying for tests will cause her grades to improve. What mistake has Alma made?

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How many times does 6 go into 312

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