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VladimirAG [237]
2 years ago
15

The first step in determining the solution to the system of equations, y = -x2 - 4x - 3 and y = 2x + 5, algebraically is to set

the two equations equal as -x2 - 4x -3 = 2x + 5. What is the next step?
Mathematics
1 answer:
aliya0001 [1]2 years ago
8 0

Answer:

See below

Step-by-step explanation:

Next step is to gather 'like' terms

-x2 - 4x -3 = 2x + 5.

x^2 + (4x + 2x)   + (3+5)    = 0       then simplify

x^2 + 6x + 8     = 0        then factor

(x+4)(x+2) = 0  

so either of these terms = 0

x+4 = 0    means   x = -4

x+ 2 = 0 means  x = - 2          

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If g(x) = 3x² – 2x–5, what is the<br> value of g(-1) ?
garri49 [273]

Answer:

0

Step-by-step explanation:

g(-1)=3×(-1)²-2×(-1)-5 g(-1)=3×1+2-5 g(-1)=3+2-5 g(-1)=5-5 g(-1)=0 ......

6 0
2 years ago
PLEASE HELP!!
den301095 [7]

Answer:

given the to find the circumference is diameter by pi, so divide 3.5 by pi to get 1.11408460164 so.. 1.114?

5 0
3 years ago
Read 2 more answers
A) 2.5x + 1.25 &lt; 3.75 <br>b)5.12 2.4x + 0.3<br>help!!!<br><br>​
Sauron [17]

Answer:

a) 1

b)I would like to help u but i don't understand the question I think something is missing there plus sign or minus sign sry

Step-by-step explanation:

2.5x + 1.25 < 3.75

2.5x < 3.75 - 1.25

2.5x < 2.5

\frac{2.5x}{2.5}  =  \frac{2.5}{2.5}

x = 1

I hope u like it ‍❤️‍‍❤️‍

For any question comment me

Really sorry for the second question

4 0
3 years ago
What are the solutions to the quadratic equation x^2-16=0
maks197457 [2]
Good evening.


This is a incomplete quadratic equation, because it does not have the term bx. Therefore, we can solve this faster with the following strategy:

\mathsf{x^2 - 16 = 0}

Add 16 to both sides:

\mathsf{x^2 - 16 + 16 = 0 + 16}\\ \\ \mathsf{x^2 = 16}

Take the square root:

\mathsf{\sqrt {x^2} = \pm\sqrt{16}}\\ \\ \mathsf{\boxed{\mathsf{x = \pm4} }}

Therefore:

\boxed{\boxed{\mathsf{S=\{-4, \ +4\}}}}
4 0
3 years ago
Find the area of a circle in terms of pi with a radius of 7.4 cm.
Anit [1.1K]
A= \pi  r^{2} =\\A=\pi (7.4)^{2}=\\A=\pi (54.76)=\\A=54.76\pi
4 0
3 years ago
Read 2 more answers
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