Gaira made a mistake when substituting the value –7.5 in for x.
She multiplied both terms of the expression by –7.5 when she should have only multiplied –3.8 by –7.5.
The value of the expression is 34.5.
Given
Gaira was asked to evaluate the algebraic;
–3.8x + 6 when x = –7.5.
<h3>What is an algebraic expression?</h3>
Algebraic expressions consist of numbers and variables along with operational signs.
Gaira made a mistake when substituting the value –7.5 in for x.
She multiplied both terms of the expression by –7.5 when she should have only multiplied –3.8 by –7.5.
To solve the following expression follow all the steps given below.
Then,
The correct expression is;
Hence, the value of the expression is 34.5.
To know more about Algebraic expression click the link given below.
brainly.com/question/953809
Based on the fact that Steve was originally driving the speed limit and then stopped a few hours and drove slower, the situation models a piecewise defined function.
<h3>What is a piecewise defined function? </h3><h3 />
This is a type of function where there are two or more parts joined together. In other words, there are two equations to represent the different parts of the function.
In this case, Steve was driving at a certain speed. This is one function. Then he stopped for a couple of hours which is another function. Then the last function has him driving slower than the speed limit.
In conclusion, this is a defined piecewise function.
Find out more on piecewise functions at brainly.com/question/18499561
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Answer:
it is 40
Step-by-step explanation:
0.45 can go into 18 40 times
Answer:
Step-by-step explanation:4 -2x=3x +2
4-2=3x+2x
2=5x
X=2/5
Answer:
<h2>x= 37</h2>
Step-by-step explanation:
This problem can be solved by applying Pythagoras theorem, since the segment AB is tangent to the circle(meaning that the point A is at 90 degree to the circle)
According to Pythagoras theorem "It states that the area of the square whose side is the hypotenuse is equal to the sum of the areas of the squares on the other two sides".
given (as seen from the diagram)
x, hypotenuse= ?
opposite= 12
adjacent= 35
Applying Pythagoras theorem
Substituting our given data and solving for hpy we have
hence x= 37