MATHEMATICS HIGH SCHOOL

What value for c will make the expression a perfect square trinomial? x2 – 7x + c

Answers

Answer 1

Answer:

Answer: 12.25

Step-by-step explanation:

A perfect square trinomial is written as $ax^2+2abx+b^2$ , where

first term $ax$ = square of first term of binomial

second term=2abx=twice the product of both terms of binomial.

and third term 'c'=square of last term of binomial

In the given polynomial , $x^2+7x+c$ , a=1

and 2ab = 7

When we put value of a =1, we get

$2(1)b=7\n\Rightarrow\ b=(7)/(2)$

Hence, in place of the question mark makes the given polynomial a perfect square trinomial = $b^2=((7)/(2)^2=12.25$

Answer 2

Answer: I assume the first part of that equation is x^2. -7/2= 3.5 ; 3.5^2=12.25 sooo it should end up as x^2-7x + 12.25. but I might be wrong.

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What is the answer for 3{5[10+5(500-100)+399]}

Answers

Okay. Handle 500-100 first. That brings it to 3{5[10+5(400)+399]}. Next, Handle 5(400). That brings you to 3{5{10+2,000+399]}. Then handle all the addition. That leads to 3[5(2,409)]. Next, configure 5(2409). That leads to 3(12045). Then do that one which ends as 36,135 for a final answer.

Handle 500-100 first. That brings it to 3{5[10+5(400)+399]}. then Handle 5(400). That brings you to 3{5{10+2,000+399]}. next handle all the addition. That brings you to 3[5(2,409)]. Next, configure 5(2409). That gives you 3(12045). Then do that one which ends as 36,135 for a final answer.qx

What is the equation of a horizontal line that passes
through the point (-4, -5)?

Answers

Answer: y=-5

Step-by-step explanation:

A horizontal line appears on the graph if it goes through the y-axis. Knowing this, the coordinate tells us that the y-coordinate is -5. This tells us that the equation of the line is y=-5.

How do you write a quardratic equation wiyh the given roots

Answers

Write:

('x' minus one root) times ('x' minus the other root) = 0

Then multiply the left side out and you have your quadratic equation.

Which best describes the strength of a model with an r-value of 0.29?a weak positive correlation
a strong positive correlation
a weak negative correlation
a strong negative correlation

Answers

The correct answer is:

a weak positive correlation

Explanation:

An r-value, or correlation coefficient, tells us how closely the regression fits the data. R-values range from -1 to 1; -1 indicates a perfect negative fit, while 1 indicates a perfect positive fit. The closer a negative r-value is to -1, the better the fit; the closer a positive r-value is to 1, the better the fit. The closer either of these are to 0, the weaker the fit.

Since 0.29 is positive, this is an increasing fit. Since it is closer to 0 than 1, it is a weak fit.

A model with an r-value of 0.29 represents a weak positive correlation

How to interpret the correlation?

The correlation coefficient has its value to be from -1 to 1

The correlation coefficient is given as:

r = 0.29

The closer the value to 0, the weaker the correlation.

0.29 is closer to 0, than it is to 1

And 0.29 is positive

Hence, a model with an r-value of 0.29 represents a weak positive correlation

Answers

Answer (it has two solutions):

k > 4
k < -4

I hope this helps!

When competing for admission to more selective four-year colleges, which of the following can be just important as a GPA?. A. Letters of recommendation. B. Personal statement. C. Community & Extra curricular activities. D. High school class size

Answers

When competing for admission to more selective four year colleges, community and extra curricular activities are important as GPA.

What is GPA?

"A grade point average is a number representing the average value of the accumulated final grades earned in courses over time. More commonly called a GPA, a student’s grade point average is calculated by adding up all accumulated final grades and dividing that figure by the number of grades awarded. This calculation results in a mathematical mean—or average—of all final grades. The most common form of GPA is based on a 0 to 4.0 scale (A = 4.0, B = 3.0, C = 2.0, D = 1.0, and F = 0), with a 4.0 representing a “perfect” GPA—or a student having earned straight As in every course."

Extra curricular activities help developing inter personality traits like working in team and having coordination.

These all help us building and finding yourselves, this is the reason colleges and university focus on more extra curricular activities.

That is why extra curricular are as important as GPA.

Hence, C is the correct option.

To know more about GPA here

brainly.com/question/16980236

#SPJ3

Answer:

Step-by-step explanation:

A-P-E-X APPROVED

Other Questions

The drama club is showing a video of the recent play the first showing began at 2:30 PM the second showing was scheduled to start at 5:25 PM with in half hour break between the showings how long is the video in hours and minutes

(35 + 5)[16 + (12 divide 4)]

Help!!!!!!!!!!!!!!!!!!!!!

A car is moving at a rate of 28 miles per hour and the diameter of its wheels is about 2 1/3 feet. Find the angular speed of the wheel in radians per minute.