<u>all expression represent how much Judith spent.</u>
Answer:
<u>Question:</u>
Judith's grandmother paid her x dollars a week to mow the lawn during the summer.
Judith decided to save some of her money and spend the rest. For the first 4 weeks, Judith put $10 per week into savings. For the next 8 weeks, she put $15 per week into savings.
<u>Solution given:</u>
Judith's grandmother paid her x dollars a week
<u>it means Judith's income per week is x.</u>
Judith decided to save some of her money and spend the rest.
For the first 4 weeks, Judith put $10 per week into savings.
<u>it mathematical expression it is expressed as:</u>
<u>4(x-$10)</u>
again
For the next 8 weeks, she put $15 per week into savings.
<u>it mathematical expression it is expressed as:</u>
<u>8(x-$15)</u>
<u>now,</u>
<u>Judith's </u> have
<u>4(x-$10)+8(x-$15) </u>it represent 1st expression.
solving above equation
<u>(4x-$40)+(8x-$120) </u>represents 4t h expression.
<u>(4x+8x)-($40+$120)</u> represents 2nd expression.
12x-$160 represents 3rd expression.
Answer:
The given statement is true.
Step-by-step explanation:
A basic variable in a linear system is a variable that corresponds to a pivot column in the coefficient matrix.
The statement is true.
This statement is the definition of a basic variable.
We can also say that a basic variables are 'n' variables that can take any value other than zero.
Answer:
The amount of interest to be paid is $105
Step-by-step explanation:
To find how much interest that will be paid, we will follow the steps below;
Simple Interest = PRT / 100
where p is the principal, R is the rate and T is the time in years
from the question given
principal P = $1000
Rate R = 3.5
and time T = 3
substitute the values into the formula above
Interest = $1000×3.5×3 / 100
=$10×3.5×3
=$105
Interest = $105
The amount of interest to be paid is $105
