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love history [14]
3 years ago
11

6x^2-5x+3 - (3x^2+8x-4)

Mathematics
2 answers:
amid [387]3 years ago
5 0
The answer should be 3x^2 -13x+7.
pantera1 [17]3 years ago
3 0

6x {}^{2}  - 5x + 3 - ( {3x}^{2}  + 8x - 4)

= 6 {x}^{2}  - 5x + 3 -  {3x}^{2}  - 8x + 4

= ( {6x}^{2}  -  {3x}^{2} ) + ( - 5x - 8x) + (3 + 4)

=  {3x}^{2}  - 13x + 7

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I think its a) 172.50 but im not exactly sure.
4 0
3 years ago
A boat heads north at 30 mph while a steamer heads east at 40 mph at the same time. When is the distance between them 50 mi?
Vera_Pavlovna [14]

let t = time (hrs) that they are 50 mi apart

Use pythag here; a^2 + b^2 = c^2; dist = speed * time

(30t)^2 (40t)^2 = 50^2

900t^2 + 1600t^2 = 2500

It's obvious that t = 1 hr

7 0
3 years ago
How can you quickly determine the number of roots a polynomial will have by looking at the equation?
Shtirlitz [24]

One can determine the number of roots by seeing the degree of the given polynomial.

The number of roots can be determined by just seeing the highest power of the given equation.

1) for the equation  x-4=0

here, the highest power of the equation is one. So, it will have one root.

<h3>What is the polynomial?</h3>

A polynomial is an expression consisting of indeterminates and coefficients, that involves only the operations of addition, subtract multiplication, on,  and non-negative integer exponentiation of variables.

Let's check it by simplifying x-4=0  which implies x=4

Hence, the equation has only one root namely x = 4.

2) Consider a quadratic equation,

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here, the highest power of the equation is two. So, it will have two roots.

Let's check it by simplifying using the middle term splitting method,

10t^2+5t-6t-3=0

5t(2t+1)-3(2t+1)=0

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t=-3/5 or t=-1/2

Thus, the equation has two roots.

Hence, one can determine the number of roots by seeing the degree of the given polynomial.

To learn more about the polynomial visit:

brainly.com/question/2833285

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3 0
1 year ago
Midpoints <br> B is the midpoint of AC , find x.
PolarNik [594]

B is the midpoint which means both sides are equal to each other:

5x = 3x + 4

Subtract 3x from both sides

2x = 4

Divide both sides by 2

X = 2

4 0
3 years ago
Read 2 more answers
Luis rides his bicycle 34 mile in 5 minutes, or 112 hour, along the bike trail. Assuming he rides at a constant rate, what is hi
artcher [175]

Answer:

408\frac{miles}{hour}

Step-by-step explanation:

we know that

To find the speed divide the total distance by the time

so

\frac{34}{(1/12)}=34*12=408\frac{miles}{hour}

3 0
3 years ago
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