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Afina-wow [57]
2 years ago
7

Help Not sure .. does anyone have a clue ?

Mathematics
2 answers:
denis23 [38]2 years ago
5 0

Answer:

Step-by-step explanation:

f(x)=2(x+4)(x-1)

=(2x+8)(x-1)

<h3>=2x²-2x+8x-8</h3>

=2x²+6x-8

OLga [1]2 years ago
5 0

Answer:

B. f(x) = 2(x + 4) (x - 1)

and

F. f(x) = 2(x + 1.5)²- 12.5

Step-by-step explanation:

look at the pictures

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A coin is tossed 20 times. It lands on heads 9 times. What is the P(H) according to your experiment? Write your answer as a frac
Mama L [17]

Answer:

\frac{9}{20}=0.45=45%

Step-by-step explanation:

Probability is found by first forming a fraction where the numerator represents the number of desired outcomes and the denominator represents the total number of outcomes.  In this case, the desired outcomes is the amount of times the coin lands on heads (9) and the total outcomes is the number of times the coin is tossed (20):

\frac{9}{20}

Divide numerator by denominator to get a decimal: 9÷20= 0.45

Multiply the decimal by 100 to get a percent: 0.45 x 100 = 45%

8 0
3 years ago
What is the solution to the equation 6t=144
Grace [21]
Isolate the variable by dividing both sides by 6:
t=144/6=24


The solution is t=24

Good luck!
8 0
2 years ago
Read 2 more answers
What is the z-score for a patient who takes 7 days to recover? (choose the closest possibility.)
Kisachek [45]

Based on the time it took the patient to recover and the mean and standard deviation, the z-score is 1.5.

<h3>What is the z-score?</h3>

The z-score for this patient who takes 7 days to recover can be found as:

= (Time taken to recover - Mean) / Standard deviation

Solving for the z-score gives:

= (7 - 5.2) / 1.2

= 1.8 / 1.2

= 1.5

The first part of the question is:

The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.2 days and a standard deviation of 1.2 days.

Find out more on the z-score at brainly.com/question/25638875

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5 0
1 year ago
what is the equation of the line that is perpendicular to the line y=3/5x+10 and passes through the point (15,-5)
riadik2000 [5.3K]

Answer:

y = -\frac53x + 20

Step-by-step explanation:

Hello!

A line that is perpendicular to another has an opposite-reciprocal slope.

Meaning:

  • Flip the sign (+/-)
  • Flip the fraction

The slope perpendicular to 3/5 would be -5/3.

We can solve for the y-intercept by plugging in the x and y values given from the coordinate into the equation with out new slope.

<h3 /><h3>Solve for B</h3>
  • y = -\frac53x + b
  • -5 = -\frac53(15) + b
  • -5 = -25 + b
  • 20 = b

The y-intercept of the new line is 20.

The equation is y = -\frac53x + 20

6 0
2 years ago
X-5 over (3x+9)(x-4)
STatiana [176]

Answer:

Simplified equation: \frac{x-5}{3(x+3) (x-4)}

<em>Brainliest Pls</em>

6 0
3 years ago
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