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miss Akunina [59]
2 years ago
15

Which of the following equations has exactly one solution?

Mathematics
1 answer:
shusha [124]2 years ago
6 0

Answer:

A

Step-by-step explanation:

5a+4=9a+3-4a

5a-9a+4a=3-4

a=-1

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Of the cartons produced by a company, 8% have a puncture, 7% have a smashed corner, and 0.7% have both a puncture and a smashed
Viktor [21]

Answer:

The probability that a randomly selected carton has a puncture or a smashed corner is 0.143

Step-by-step explanation:

we know that P(A∪B) = P(A) + P(B) - P(A∩B).

    since given that P(A) = Probability of getting puncture = 0.08

                                P(B) = probability of getting smashed corner = 0.07

                       P(A∩B) = probability of getting both puncture and smashed corner = 0.007

                    P(A∪B) = probability of getting any of them

   so P(A∪B) = 0.08 + 0.07 -0.007 = O.143

5 0
3 years ago
Simplify<br> x + x + y x y?
saw5 [17]

Answer: 2x+y^2

Step-by-step explanation:

x\:+\:x\:+\:y\:\cdot \:y

x+x+yy

2x+yy

2x+y^2

8 0
3 years ago
Read 2 more answers
An H0-scale model railroad engine is 9 inches long. The H0 scale is 87 feet to 1 foot. How long is a real engine?
Semmy [17]

The real engine is 65.25 feet long

<h3>How to determine the length?</h3>

The scale is given as:

Scale = 87 feet to 1 foot

The scale length is given as

Scale length = 9 inches

Convert inches to feet

Scale length = 9/12 feet

The actual length is then calculated as:

Actual = 87 * 9/12 feet

Evaluate

Actual = 65.25 feet

Hence, the real engine is 65.25 feet long

Read more about scale ratios at:

brainly.com/question/16192120

#SPJ1

7 0
2 years ago
I need to classify what triangle this is and these are the choices equilateral, isosceles, scalene and right. Someone please hel
Drupady [299]

Answer:

Isosceles

Step-by-step explanation:

isosceles triangles have at least 2 EQUAL sides :)

5 0
3 years ago
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Help pls!<br> Which rational function has zeros at x = -1 and x = 6 ?
bagirrra123 [75]

Answer:

f(x) = \frac{x^{2} -5x-6}{x^{2} -4}

Step-by-step explanation:

Let's factorize the 1st option :

⇒ f(x) = \frac{x^{2} -5x-6}{x^{2} -4}

⇒ f(x) = \frac{x^{2}+x-6x-6 }{(x+2)(x-2)}

⇒ f(x) = \frac{(x+1)(x-6)}{(x+2)(x-2)}

===============================================================

Finding the zeros :

⇒ Factors of numerator should be equated to 0

  1. x + 1 = 0 ⇒ x = -1
  2. x - 6 = 0 ⇒ x = 6

=============================================================

Solution :

f(x) = \frac{x^{2} -5x-6}{x^{2} -4}

6 0
2 years ago
Read 2 more answers
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