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4 years ago

PLEASE HEEELLPPPPPP MEEEEEE

Mathematics

1 answer:

kykrilka [37]4 years ago

5 0

The answers 23 buddy

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

Tom [10]

Answer:

The value of c is 12.25

Step-by-step explanation:

we know that

A perfect square trinomial is of the form

$(x-a)^{2}=x^{2}-2ax+a^{2}$

In this problem we have

$x^{2}-7x+c$

equate the equations

$x^{2}-7x+c=x^{2}-2ax+a^{2}$

we have

the following equations

$-7x=-2ax$ -----> equation A

and

$c=a^{2}$ -----> equation B

Solve the equation A

$-7x=-2ax$

$7=2a$

$a=3.5$

Solve the equation B

$c=a^{2}$

$c=3.5^{2}=12.25$

therefore

$(x-3.5)^{2}=x^{2}-7x+12.25$

The value of c is 12.25

7 0

3 years ago

Read 2 more answers

When solving an equation, Gabrielle's first step is shown below. Which property

Serhud [2]

Answer:

I don't know you should have done it when the teacher gave it to you.

Step-by-step explanation:

I just relapsed into self harm and I'm not doing well in this class which already stresses me out enough.

4 0

3 years ago

Simon has 20 quarters and 12 dimes.He wants to purchase ice cream for his friends.An ice cream cone cost $1.00.How many cones ca

Helga [31]

Answer:

Step-by-step explanation:

Each ice cream cone costs 4 quarters or 10 dimes, so Simon has ...

20/4 + 12/10 = 5 + 1.2 = 6.2

times the price of an ice cream cone. He can buy 6 cones for his friends.

8 0

3 years ago

PLEASE EXPLAIN!

stepladder [879]

Answer:

Step-by-step explanation:

5(2)(3)-2(2)+13+7(2)-6(2)(3)-4(2)+(2)(3)

30-4+13+14-36-8+6

6 0

3 years ago

What is the slope of this line? A. -1/2 B. 1/2 C. -2 D. 2

SVEN [57.7K]

We can find the slope of this line by using the slope formula:

$\frac{y.2 - y.1}{x.2 - x.1} = m$

We'll use the points (-6, 0) and (0, -3)

(-3 - 0) / (0 + 6) = -3/6 = -0.5

The slope of the line is A, -1/2

5 0

3 years ago