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Finger [1]
3 years ago
11

2.) What value for c will make the expression a perfect square trinomial?

Mathematics
2 answers:
andre [41]3 years ago
6 0

Answer : \frac{49}{4}

Given expression is x^2 - 7x + c

To make perfect square trinominal we use completing the square method

In completing the square method we add and subtract the half of square of coefficient of middle term

Here coefficient of middle term is -7

Half of -7 is \frac{-7}{2}

Square of \frac{-7}{2} is (\frac{-7}{2})^2 = \frac{49}{4}

So the expression becomes x^2 - 7x +  [tex] \frac{49}{4} that gives perfect square trinomial

Hence , the value of 'c' is \frac{49}{4}


kirill115 [55]3 years ago
6 0
49/4 is the answer :)))
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7 0
3 years ago
What is the y-intercept of the line perpendicular to the line...
Dominik [7]

Answer:

D) 5

Step-by-step explanation:

Perpendicular lines have opposite reciprocal slopes.

The line: y=\frac{3}{4} x+3 has a slope of \frac{3}{4} as it is  in y=mx+b form, where m is the slope, and b is the y-intercept.

Since the slope is \frac{3}{4}, we see that the negative reciprocal slope is -\frac{4}{3}, as \frac{4}{3} is the reciprocal (flip the numerator and denominator).

From here, we can use point slope form: y - y1 = m(x- x1), where (y1, x1) is  the point. In this case, (3, 1) is the point.

Thus, we have: y-1 =-\frac{4}{3}(x-3) as our final equation.

Simplifying: y-1 = -\frac{4}{3}x+4

And: y=-\frac{4}{3}x+5, which gives us the y-intercept to be 5.

Let me know if this helps!

4 0
2 years ago
Which general rule maps triangle ABC into triangle A’B’C’?
Alenkasestr [34]
A sequence of transformations maps triangle ABC into triangle A’B’C
3 0
2 years ago
the sum of two numbers is 60. the larger number is 12 more than the smaller number. what is the number?
allochka39001 [22]
The larger number is: 36
The smaller number is: 24

Firstly, if a number is 12 more than the other, that means that the difference between the two numbers is 12

If you divide 60 by 2, you get two 30's. Then, if you add 6 to one of the 30's and then subtract 6 to the other 30, resulting in 36 and 24, you get set of numbers which equal 60 and also have a difference of 12.
5 0
3 years ago
What do you add to 3 7/8 to make 7
Liula [17]
You add 3 1/8 to make 7 because 3 + 3 is 6 and then 1/8 + 7/8 is 1; therefore, 6 + 1 is 7.
3 0
3 years ago
Read 2 more answers
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