All categories

3 years ago

What are the values of A and B

Mathematics

1 answer:

Ostrovityanka [42]3 years ago

8 0

Answer:

Step-by-step explanation:

Multiply the denominators so you will have common denominators.

Then 5x + 11 = A(x+3) + B(x+1)

So 5x + 11 = x(A+B) + 3A + B

The only thing that has x in right is (A+B)

So A+B = 5

And 3A + B = 11

So 2A=6

And A=3

B = 5 - 3 = 2

You might be interested in

Use the x-intercept method to find all real solutions of the equation x^3-12x^2+39x-28=0

Tomtit [17]

A graph shows the x-intercepts to be x ∈ {1, 4, 7}.

These are the real solutions to the equation.

8 0

4 years ago

Justify each step of this inequality by stating the property that was used to get to each step.

Olenka [21]

Answer:

issolat variable

subtract constant

individualize variable

divide by coeficient

answer

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Interpret the 95% confidence interval for average BMI. What do the lower and upper bounds of the confidence interval tell us?

GaryK [48]

Answer:

(26.2252 ; 27.3748)

Step-by-step explanation:

The confidence interval is given by :

x ± Margin of error

The margin of error = Zcritical * (σ/√(n))

σ = 7.5 ; n = 654

Zcritical = Zα/2 = 1.96

The margin of error = 1.96 * (7.5/√654) = 0.5748

The confidence interval :

Upper boundary = 26.8 + 0.5748 = 27.3748

Lower boundary = 26.8 - 0.5748 = 26.2252

(26.2252 ; 27.3748)

We are 95% confident that the mean BMI of the entire population will fall in between (26.2252 ; 27.3748)

6 0

3 years ago

What is the answer to x^2+4x+y^2

Alinara [238K]

Answer:

Step-by-step explanation:

6 0

3 years ago

Have an amazing day :) <br><br> Will give brainlst

Alexxx [7]

X= 8.29 or 8.3
you have to use the pythagorean theorem (a^2 +b^2=c^2) remember c is the hypotenuse and the hypotenuse is always across from your triangles right angle

4 0

3 years ago