The test started at 3:05 if it ended 50 minutes later at 3:55
Answer: FIRST OPTION
Step-by-step explanation:
<h3>
The missing picture is attached.</h3>
By definition, given a Quadratic equation in the form:
Where "a", "b" and "c" are numerical coefficients and "x" is the unknown variable, you caN use the Quadratic Formula to solve it.
The Quadratic Formula is the following:
In this case, the exercise gives you this Quadratic equation:
You can identify that the numerical coefficients are:
Therefore, you can substitute values into the Quadratic formula shown above:
You can identify that the equation that shows the Quadratic formula used correctly to solve the Quadratic equation given in the exercise for "x", is the one shown in the First option.
The equation of the linear function represented by the table is
y = -x + 9
Step-by-step explanation:
The equation of a linear function is y = m x + b, where m is the slope
and b is the y-intercept
To find the equation:
- Use any two points from the table to find the slope m
- Substitute x and y in the equation by the coordinates of any point in the table to find b
The formula of the slope is , where
and are two points in the table
The table:
x → -5 -2 1 4
y → 14 11 8 5
Let us use points (-5 , 14) and (-2 , 11) to find the slope of the equation
∵ = -5 and = -2
∵ = 14 and = 11
∴
∴ m = -1
∵ The form of the equation is y = mx + b
- Substitute the value of m in the form
∴ y = -x + b
- To find b substitute x by -5 and y by 14
∴ 14 = -(-5) + b
∴ 14 = 5 + b
- Subtract 5 from both sides
∴ 9 = b
- Substitute the value of b in the equation
∴ y = -x + 9
The equation of the linear function represented by the table is
y = -x + 9
Learn more:
You can learn more about the linear equation in brainly.com/question/9801816
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Answer:
10%
Step-by-step explanation:
first let's write out the problem
0.99 is what percent of 9.90 = 0.99=9.90*x
We need to what c is so we would do the opposite operation of multiplication, division so we get,
0.99/9.90= .1
now we turn .1 into percent and get out answer
0.1= 10%