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Tamiku [17]
3 years ago
14

Use the discriminant to find all values of b for which the question has one real solution.

Mathematics
1 answer:
Arada [10]3 years ago
4 0
Use the formula 0 = b^2-4ac

0 = -b^2-4(2)(-9)

0 = -b^2+72

b^2 = 72

b = square root of 72

b = 2 real numbers
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1/4=something 8 plz help me
gayaneshka [121]

Answer:

1/4 = 0.25

Step-by-step explanation:

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PLEASE HELP ME OUT IM FAILING MATH‍♂️ Thx
Tatiana [17]
The question is looking for the amount of boxes (24 per box) needed for the event (300). If you multiply 24 by each number, you would be able to find the answer. 24*11 = 264, so that isn’t enough. 24*12 = 288, and that also isn’t enough. But if you do 24*13, you get 312, which gives you more than enough cupcakes for the event. So the answer is 13.
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Find the measure of Angle B<br><br> A. 50°<br> B. 55°<br> C. 60°<br> D. 65°
kondaur [170]

Option B. 55° is the correct answer

Step-by-step explanation:

"The sum of interior angles of a triangle is always 180°"

Given

m∠A=(3x+1)°

m∠B=(2x-1)°

m∠C = 40°

We know that

m∠A+m∠B+m∠C=180°

Putting the values of angles

(3x+1) +(2x-1) +40 = 180\\3x+1+2x-1+40 = 180\\5x+40=180\\

Subtracting 40 from both sides

5x+40-40=180-40\\5x=140

Dividing both sides by 5

\frac{5x}{5} = \frac{140}{5}\\x=28

We have to find Angle B,

So

m∠B = 2x-1 = 2(28)-1 = 56-1 = 55°

Hence,

m∠B=55°

Option B. 55° is the correct answer

Keywords: Triangle, Interior angles

Learn more about triangles at:

  • brainly.com/question/12896802
  • brainly.com/question/12973601

#learnwithBrainly

8 0
3 years ago
3/x+3+2/x What is the common denominator in this rational expression? Answers should be given in fully factored form.
Inga [223]

Answer:

x(x+3).

Step-by-step explanation:

The C, D. of x and x+3 is x(x+3).

7 0
2 years ago
Write the equation 5x - 3y = 15 in slope-intercept form. 5x____ - 3y = ____ + 15
Deffense [45]
5x - 3y = 15

5x - <u>5x</u> -3y = <u>- 5x</u> + 15

<u>-3y</u> = <u>-5x</u> + 15

3y = 5x - 15

divide all of them by 3...

y = 5/3 - 5 
5 0
3 years ago
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