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3 years ago

(MIDDLE SCHOOL MATH) what is the answer for b)?

Mathematics

2 answers:

lesya692 [45]3 years ago

7 0

Answer:

because it easily displays all of the info

VARVARA [1.3K]3 years ago

4 0

Because it shows all of the info

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Consider the system of equations.

oksian1 [2.3K]

Answer:

b. if dont d cuz I did this one but I kinda forgot

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2 years ago

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Michele correctly solved a quadratic equation using the quadratic formula as shown below.

Fofino [41]

Answer:

The original equation must have been:

$7x^{2} -5x-2=0$

Step-by-step explanation:

A quadratic equation is in the form of :

$ax^{2} +bx+c=0$

And it is solved in the form of :

$x=\frac{-b+\sqrt{b^{-4ac} } }{2a}$ and $x=\frac{-b-\sqrt{b^{-4ac} } }{2a}$

Now the given equation is :

$x=\frac{-(-5)+-\sqrt{(-5)^{2} -4(7)(-2)} }{2(7)}$

We can see that here;

a = 7

b = -5

c = -2

So, the original equation must have been:

$7x^{2} -5x-2=0$

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3 years ago

skier is trying to decide whether or not to buy a season ski pass. A daily pass costs $60. A season ski pass costs $450The ski

Cerrena [4.2K]

About 20 times to be almost accurate check my math plz.
WELCOME!

5 0

2 years ago

Hey:) can you please help me posted picture of question

oee [108]

Answer:
x² + 10x + 25

Explanation:
Before we begin, remember the following:
(a + b)(a + b) = (a + b)² = a² + 2ab + b²

Now, for the given we have:
(x + 5)(x + 5)
We can note that the two brackets are identical.
Therefore, we can apply the above rule as follows:
(x + 5)(x + 5) = (x + 5)²
= (x)² + 2(x)(5) + (5)²
= x² + 10x + 25

Hope this helps :)

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2 years ago

Help me with this math question

nasty-shy [4]

Answer:

$\huge \boxed{K=20}\checkmark$