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Colt1911 [192]
3 years ago
14

What does it mean to solve an equation

Mathematics
2 answers:
12345 [234]3 years ago
7 0
In Middle School math, it means to find out what number ' x ' must be in order for the equation to be a true statement. In middle school, it can only be one number.
yanalaym [24]3 years ago
7 0

Step-by-step explanation: Solving an equation means finding the value of the variable that makes the equation true.

Let's look at an example.

Solve the following equation.

3x + 1 = 7

To solve the equation, we need to get <em>x</em> by itself on one side and we do that by subtracting 1 from both sides to get 3x = 6. Now just divide both sides of the equation by 2 and we find that <em>x = +2</em>.

Thus, the solution to the equation is x = +2.

So the value of the variable is +2.

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Chaney deposits $1435.73 into a savings account that pays a simple annual interest rate of 1.32%. How much interest will she ear
Aneli [31]

Answer:

Interest Chaney earns after 3 years is  $56.85

Step-by-step explanation:

Given:

Amount deposited = $1435.73

Simple annual interest rate = 1.32% = 1.32/ 100 = 0.0132

To find: Interest after 3 years

We know that the formula to calculate the interest amount is

Simple interest (S.I.) = \frac{Prt}{100}

where,

P is the initial amount deposited

r is the rate of simple interest in percentage

t is the time in years for which interest is to be calculated

Substituting the known values in the formula, we get

S.I = \frac{1435.73 x 1.32 x 3}{100}

    = 56.85

Hence the interest Chaney earns after 3 years is  $56.85

8 0
3 years ago
What values are needed to make each expression a perfect square trinomial?
serg [7]

Answer:

1) 1  2)100 3)6.25.

Step-by-step explanation:

Any  trinomial is of the form ax^2+bx+c .

To make the expression a perfect square we take half of b term then square it Add (\frac{b}{2})^2This is what we add to make the expression a perfect square.

1)Half of coefficient of x term is 1 .

Square it that is 1 is added to make it a perfect square.

x^{2}+2x+1

2) Half of coefficient of x term that is 20÷2=10 .Square it that is 100 is added to make it a perfect square.

x^{2} -20x+100

3) Half of coefficient of x that is 5÷2=2.5.Square it 6.25 is added to the expression to make it a perfect sqauare.

x^{2} +5x+6.25.

5 0
3 years ago
Read 2 more answers
There were 220 people who voted at the 6th grade meeting. Sixty percent of the voters are in favor of changing the school mascot
Bogdan [553]
To find how many people 60% is you need to do 0.60 × 220 = 132

Now you know that 60% of 220 is 132. 

Then subtract 132 from 220

220 - 132 = 88

The answer is 88
3 0
3 years ago
Find an explicit rule for the nth term of the sequence.
otez555 [7]
This is a GS with first term -5 and common ratio = 5.
an  = a1. r^(n -1) 
      =  -5 . 5^(n - 1) 

Its D
4 0
3 years ago
Below is the five Number summary for a 136 hikers who recently completed the John muir trail JMT the variable is the amount of t
Helga [31]

Answer:

IQR = Q_3 -Q_1 = 28-18 = 10

Now we can find the limits in order to determine outliers like this:

Left = Q_1 -1.5 IQR = 18 -1.5*10=3

Right = Q_1 +1.5 IQR = 18 +1.5*10=33

So for this case the left boundary would be 3, if a value is lower than 3 we consider this observation as an outlier

b. 3

Step-by-step explanation:

For this case we have the following summary:

Minimum = 9 represent the minimum value

Q_1 = 18 represent the first quartile

Median =Q_2= 21 represent the median

Q_3 = 28 represent the third quartil

Maximum=56 represent the maximum

If we use the 1.5 IQR we need to find first the interquartile range defined as:

IQR = Q_3 -Q_1 = 28-18 = 10

Now we can find the limits in order to determine outliers like this:

Left = Q_1 -1.5 IQR = 18 -1.5*10=3

Right = Q_1 +1.5 IQR = 18 +1.5*10=33

So for this case the left boundary would be 3, if a value is lower than 3 we consider this observation as an outlier

b. 3

7 0
3 years ago
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