MATHEMATICS HIGH SCHOOL

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

-49/4
-7/2
7/2
49/4

Answers

Answer 1
Answer:

Answer : (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 (-7)/(2)

Square of (-7)/(2) is ((-7)/(2))^2 = (49)/(4)

So the expression becomes x^2 - 7x + [tex] (49)/(4) that gives perfect square trinomial

Hence , the value of 'c' is (49)/(4)
Answer 2
Answer:

The value for c will make the expression a perfect square trinomial is 49/4

How to determine the value of c?

The equation is given as:

x^2 - 7x + c

Take the coefficient of x

k = -7

Divide it by 2

k/2 = -7/2

Square both sides

(k/2)^2 = (-7/2)^2

The above represents the value of c.

So, we have:

c = (-7/2)^2

Evaluate

c = 49/4

Hence, the value for c will make the expression a perfect square trinomial is 49/4

Read more about trinomials at:

brainly.com/question/1538726

#SPJ5

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Answers

Answer:

The value of w cannot be a negative number.

Substitution is used to replace the variable l with a value of 20.

The subtraction property of equality is used to isolate the term with the variable w.

Step-by-step explanation:

Answer:

C,D,E

Step-by-step explanation:

Y = 10
x = 3

x + y + y + 17 + y = ?

Thanks!!

Answers

To answer this we will first substitute for each variable and den solve. lets do it:-

x + y + y + 17 + y = ? 

y = 10

x + 10 + 10 + 17 + 10 =  

x = 3

3 + y + + y + 17 + y = ?

Now lets write it out:-

3 + 10 + 10 + 17 + 10 = ?

Now lets solve step by step:-

3 + 10 = 13 
13 + 10 = 23
23 + 17 = 40
40 + 10 = 50

So, 3 + 10 + 10 + 17 + 10 (x + y + y + 17 + y) =  50

Hope I helped ya!! xD 
Substitute:-3 + 10 + 10 + 17 + 10 =
 
Solve:-3 + 10 + 10 + 17 + 10 = 50

Pleaseeeee helppp!!!!!!!!!!!

Answers

4^(2x)=7^(x-1)\n16^x=7^x\cdot7^(-1)\n(16^x)/(7^x)=(1)/(7)\n\left((16)/(7)\right)^x=(1)/(7)\nx=\log_{\tfrac{16}{7}}(1)/(7)\approx-2.35389

D= 11/5(p-15)

solve for p.

Answers

Answer:  The required solution for p isp=(11+75D)/(5D).

Step-by-step explanation:  We are given to solve the following equation for the unknown variable p :

D=(11)/(5(p-15))~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)

To solve the given equation for p, we must find the value of p in terms of D.

From equation (i), we have

D=(11)/(5(p-15))\n\n\n\Rightarrow D=(11)/(5p-75)\n\n\n\Rightarrow D(5p-75)=11\n\n\Rightarrow 5Dp-75D=11\n\n\Rightarrow 5Dp=11+75D\n\n\Rightarrow p=(11+75D)/(5D).

Thus, the required solution for p isp=(11+75D)/(5D).
D=11/5p-33
11/5p=D+33
p=5/11D+15

Which counterexample disproves this statement?
for all integers x, 1/x less than or equal to x

Answers

One counter example would be -2. -1/2 is more than -2.

What is the pattern?6+4= 210
9+2= 711
8+5- 313
5+2= 37
7+6= 113
9+8= 117
10+6= 416
15+3= 1218

Answers

First you need to subtract both numbers and then, add them up. You'll receive e.g. 6-4=2 and 6+4=10, then just type them one after another, which will give you 6+4=210.
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