MATHEMATICS HIGH SCHOOL

Find the zeros of the following factored quadratic function.
f(x) = (9x - 1)(7x - 3)

Answers

Answer 1
Answer:

Answer:

63x^2-34x+3

Step-by-step explanation:

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What is 2 3/5 minus 1 1/7
Which relation is a direct variation that contains the ordered pair (2, 7)?
The Phillips family and the Peterson family each used their sprinklers last summer.The water output rate for the Phillips family's sprinkler was 35 L per hour.The water output rate for the Peterson family's sprinkler was 15 L per hour.The families used their sprinklers for a combined total of 35 hours, resulting in a total water output of 925 L.How long was each sprinkler used?
Two coordinates points on the line y=6x

Find f(-5) if f(x) = |x + 1|.
A)6
B)5
C)4

Answers

The answer would be C)5

The monthly utility bills in a city are normally distributed with a mean of $121 and a standard deviation of $23. Find the probability that a randomly selected utility bill is between $110 and $130.

Answers

Answer:

Step-by-step explanation:

Applying the formula for normal distribution,

z = (x - u)/s

Where u = mean

s = standard deviation

x = the monthly utility bill in dollars

From the information given,

s = 23

u = 121

The probability that a randomly selected utility bill is between $110 and $130 is expressed as

P(110 lesser than or equal to x lesser than or equal to 130)

For 110

z1 = (110 - 121)/23 = - 11/23

z1 = - 0.4783

Looking at the normal distribution table,

The corresponding z score is 0.3192

For 130

z2 = (130 - 121)/23 = 9/23

z2 = 0.391

Looking at the normal distribution table,

The corresponding z score is 0.65173

P(110 lesser than or equal to x lesser than or equal to 130) = 0.65173 - 0.3192 = 0.33253

Hardcover books are on sale for 15% off. Louise has chosen a hardcover book that normally sells for $20.00. How much will Louise save? Explain your answer.

Answers

Answer:

$19.85

Step-by-step explanation:

20-0.15=x

Switch\: sides

x=20-0.15

\mathrm{Subtract\:the\:numbers:}\:20-0.15=19.85

x=19.85

Ali and Janet are selling gifts at a local craft show. For every bar of soap that Ali sells, she earns 5$. For every mug that Janet sells, she earns twice as much as Ali. Ali sells 5 bars of sap , and Janet sells 7 mugs. How much money did they earn altogether?

Answers