2 years ago

Plz help us with this!!

Mathematics

1 answer:

Lunna [17]2 years ago

7 0

Answer:

It is 4...........

Step-by-step explanation:

Hope this helps.

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What is the solution set to the equation 2x squared - 7x - 15 = 0

ozzi

Hello,

Step-by-step explanation:

2x² - 7x - 15 = (x - 5) (2x + 3)

x - 5 = 0 ⇔ x = 5

2x + 3 = 0 ⇔ x = -3/2

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2 years ago

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a one day movie rental at red box cost $1.39. for each additional day there is a fee of $0.50.How much will it cost to rent a mo

Vedmedyk [2.9K]

C = 1.39 + 0.5(n - 1), where C is the cost and n is the number of days
C = 1.39 + 0.5(6)
C = $4.39

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2 years ago

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F(x)= 2x+3/x-1, x ≠ 1, dan f^-1 adalah invers dari f

Sindrei [870]

Answer:

The answer are

${f}^{ - 1} (x) = \frac{x + 3}{x - 2}$

${f}^{ - 1} ( - 3) = 0$

Step-by-step explanation:

To find the infers we do that

$f(x) = \frac{2 x + 3}{x - 1 } \\ (x - 1)f(x) = 2x + 3 \\ xf(x) - f(x) = 2x + 3 \\ xf(x) - 2x = f(x) + 3 \\ x(f(x) - 2) = f(x) + 3 \\ x = \frac{f(x) + 3}{f(x) - 2} \\ then \: \\ {f}^{ - 1} (x) = \frac{x + 3}{x - 2} \\ then \\ {f }^{ - 1} ( - 3) = \frac{ - 3 + 3}{ - 3 + 2} = 0$

5 0

2 years ago

Please help! I will mark a brainliest! There is a picture! :)

ella [17]

Answer: No mistakes was made

Step-by-step explanation:

Because It all equals the same as the answer

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2 years ago

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28 degree + x-4 degree+2x=180 degree

FromTheMoon [43]

Answer:

x = 52

Step-by-step explanation:

28 + x - 4 + 2x = 180

Simplify the left side

3x + 24 = 180

Subtract 24 from each side

3x = 156

Divide each side by 3

x = 52

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1 year ago