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Irina-Kira [14]
3 years ago
13

X^2+4r=-4

Mathematics
1 answer:
kap26 [50]3 years ago
6 0

Answer:

The root is x = -2

Step-by-step explanation:

1. Add 4 on both sides.

x^2 + 4r + 4 = 0

2. What two numbers, if added together and multiplied together, give 4?

2 and 2.

3. Factor

(x+2)(x+2)=0

4. Solve

x = -2 (There is only one root for this quadratic equation.)

Please give me brainliest is this is right. Than you!

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Help please?!?!?!?!?!?!?
nadezda [96]

Answer:

Choice D is  correct answer.

Step-by-step explanation:

We have given two function.

f(x) =2ˣ+5x  and g(x)  = 3x-5

We have to find the addition of given two function.

(f+g)(x) =  ?

The formula to find the addition, we have

(f+g)(x) = f(x) + g(x)

Putting given values in above formula, we have

(f+g)(x) =   (2ˣ+5x)+(3x-5)

(f+g)(x) =   2ˣ+5x+3x-5

Adding like terms, we have

(f+g)(x) =   2ˣ+8x-5 which is the answer.

6 0
3 years ago
Answer and shown work for 5x + y = 10 -x - y = -2
konstantin123 [22]
Solve first equation for y: 
5x+y=10
y=10-5x. Plug this equation into second equation

-x-(10-5x)=-2
-x-10+5x=-2
4x=8
x=2 (plug x into first equation)

5(2)+y=10
y=0
4 0
3 years ago
Read 2 more answers
What is the slope of the line passing through the points (-1,-7) and (-9,-2)?
nalin [4]

Answer: m = -5/8

Step-by-step explanation:

The general equation for slope is rise over run, also known as:

m=(y2-y1)/(x2-x1)

From the points (x, y), we can get all the variables we need.

(-1, -7) gives us x1 = -1 and y1 = -7

(-9, -2) gives us x2 = -9 and y2 = -2

If we plug all the values in, we get:

m = (-2 - (-7))/(-9 - (-1))

m = (-2 + 7)/(-9 + 1) the negatives cancel

m = (5)/(-8)

m = -5/8

7 0
3 years ago
Help mathematics need answer asap
Elina [12.6K]
Idk but it can't be 10 or 9.7 bc a triangle's hypotenuse is always longer than its legs
5 0
3 years ago
type the correct answer in each box. Use numerald instead of words. If necessary, use/ for the fraction bar​
Olegator [25]

Answer:

I just really don't kniwwww

7 0
3 years ago
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