Need Help on Pre Cal

Need Help On Pre Cal

Answers

Answer 1
Answer: 17

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

Explanation:

This is a piecewise function. It's composed of 3 pieces of other functions. A piecewise function is a function that changes its identity based on what the input is.

We have three different situations here

If t = 17, then h(t) = sqrt(17t) based on what the first row saysIf t = 19, then h(t) = -34/t which is the second row of the piecewise function.If t does not equal either 17 or 19 (ie t is anything but those values), then h(t) = 23-t

The notation h(17) means we want to evaluate h(t) when t = 17. So we'll use the first case mentioned above. Plug t = 17 into h(t) = sqrt(17t) to get...

h(t) = sqrt(17t)

h(17) = sqrt(17*17)

h(17) = sqrt(17^2)

h(17) = 17

In the last step, I used the rule that sqrt(x^2) = x when x is nonnegative.


Related Questions

Add 0 and write t
8
+
0

Answers

Answer:

8t

Step-by-step explanation:

Add 0 to 8 and then add the letter variable t.

8x – 6 = 2 (4x + 3)

Is it no solution?


Answers

Answer:

X=12

Step-by-step explanation:

8×-6=2(4×+3)

8x-6=8×+6

8×-8×=6+6

×=12

There is a solution, it would
be 12

Solve the equation: only write the number is the box
2( 5x+2)=54

Answers

Answer: x = 5

Explanation:

2(5x + 2) = 54
10x + 4 = 54
10x = 54 - 4
10x = 50
x = 50/10
x = 5

Therefore, x = 5

the sum 4 times a number and 7 is 31​

Answers

Step-by-step explanation:

I'm not sure what you're looking for exactly, but it translates to this equation

4x + 7 = 31

I need help please can someone help me !!!!!!

Answers

What are you trying to find? Area, Volume, Circumference, or perimeter?

Luke bought a new jacket using a 10% off coupon. He paid $12.93 total, which inclues $1.43 in tax.

Answers

Answer:

($14.37 was the original price)

Step-by-step explanation:

14.37 $ would be the original price and that is all

AC but is 20 m above the surface of the ocean what is the Evevation

Answers

Sea level starts at 0m

Since we start at 0 and it is 20m above sea level, we can add.

0 + 20 = 20m

Therefore, the elevation is 20m

Best of Luck!

Least to greatest 3/4, 0.5 and 14/5

Answers

Answer
0.5, 3/4, 14/5
Reason
0.5 is half, aka 2/4
3/4 is .75
14/5 is a mixed number, like 2 and 4/5

Answer: 0.5, 3/4, 14/5

Step-by-step explanation:

find the answer to = d/4 < 16

Answers

Answer:

d < 64

.....................

The square root of 39 is between which two integers?

Answers

Answer:

6 and 7 sorry if im wrong

64 ones, 67 twos, 73 threes, 59 fours, 72 fives, and 71 sixes. What is the experimental probability of rolling an even number

Answers

Answer:

Answer: The answer is (B) 48.5%.

Step-by-step explanation: Given that a number cube is rolled with the results that 64 ones, 67 twos, 73 threes, 59 fours, 72 fives, and 71 sixes appears. We are to calculate the experimental probability of rolling an even number.

The number of ways in which an even number is rolled is given by

and the total number of ways is given by

Therefore, the required probability is given by

Thus, (B) is the correct answer.

Which of the following is most likely the next step in the series?

Answers

the answer would be b.
it’s most likely to the next step

The most likely next step in the series is Option B.

Option B is the correct answer.

What is a series of patterns?

A series of patterns is a sequence of related designs, shapes, colors, or other elements that follow a consistent and predictable order.

The patterns may repeat or vary in a systematic way, creating a sense of rhythm, symmetry, or harmony.

We have,

From the series of patterns, we see that,

The number of arrows is increasing in odd arithmetic numbers.

So,

1, 3, 5,

The next step must have 7 arrows.

And,

The color is alternated as:

Red, Blue, Red Blue.

So,

The next step in the series must be a blue color.

Thus,

The most likely next step in the series is Option B.

Learn more about a series of patterns here:

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The sum of 2 times a number and 10 is the same as 6 times the difference of the number and 1. What is the number? -4 -1 1 4

Answers

Answer:

4

Step-by-step explanation:

let 'x' be the unknown number

let's change the statment to an equation

2x + 10 = 6 (x-1)

2x + 10 = 6x - 6

2x - 6x = -6 - 10

-4x = -16

-4x = - 16

-4. -4

x = 4

hope u like it ❤❤❤

For any question comment me

Answer:

4

Step-by-step explanation:

The Johnson family is going to build a new home. They need to have working drawings of their house plans created by a design firm. They will choose between Rock the House Digital Designs and Elegant Home Architects, Rock the House Digital Designs charges $500.00 for the initial consultation with the Johnson family, plus $50.00 for every additional hour of work for the house plans. Elegant Home Architects charge $75.00 per hour for the house plans. Let a represent the number of hours for which the Johnson family hires the design firm. Which of the following statements are true? Select all that apply.​

Answers

Answer:

Statement 2, Statement 4, and Statement 5 all applies

Step-by-step explanation:

Statement 1:

The expression 50ℎ represents the total charge for Rock the House Digital Designs.

Rock the House Digital Designs:

Initial consultation charge of $500 + $50 for every additional hour of work for the house plans

500 + 50h

NOT TRUE

Statement 2:

The expression 75ℎ represents the total charge for Elegance Home Architects.

Elegance Home Architects:

$75 per hour for the house plans

75h

TRUE

Statement 3:

The cost for using Rock the House Digital Designs for an initial consultation only is $550.

The cost for using Rock the House Digital Designs for an initial consultation only is $500

NOT TRUE

Statement 4:

If the Johnson family hires the design firm for 15 hours, then Elegance Home Architects will be cheaper.

Rock the House Digital Designs = 500 + 50h

500 + 50(15)

= 500 + 750

= $1,250

Elegance Home Architects = 75h

= 75(15)

= $1,125

TRUE

Statement 5:

If the Johnson family hires the design firm for 40 hours, then Rock the House Digital Designs will be cheaper.

Rock the House Digital Designs = 500 + 50h

= 500 + 50(40)

= 500 + 2,000

= $2,500

Elegance Home Architects = 75h

= 75(40)

= $3,000

TRUE

A faucet leaks 4 oz. of water per minute. How many gallons of water are wasted in a year? (128 oz. = 1 gallon)

Answers

Answer:   16,425   gallons are wasted a year

Step-by-step explanation:

First find out how many minutes there  are in a year then multiply it by how much oz the faucet leaks every years then convert it into gallons.

There are 525,600 minutes in a year now multiply it by 4.

525,600 * 4 = 2,102,400  So there are more than 2 million oz  wasted in a year so now convert it to gallons.

If there are 128 oz for every gallons the divide 2,102,400 by 128 to find out how many gallons are wasted a year.

2,102,400 / 128 = 16,425

A vehicle factory manufactures cars. The unit cost (the cost in dollars to make each car) depends on the number of cars made. If cars are made, then the unit cost is given by the function . What is the minimum unit cost? Do not round your answer.

Answers

Answer:

The function is missing in the question. The function is [tex]$ C(x) = 0.8x^2 -544x +97410 $[/tex]

The answer is 4930

Step-by-step explanation:

Unit cost of a car is given as

[tex]$ C(x) = 0.8x^2 -544x +97410 $[/tex]

Cost will be minimum when

x = -(-544)/ 2 x 0.8

  = 340

Therefore, minimum cost for unit car is

[tex]$ C(x) = 0.8x^2 -544x +97410 $[/tex]

[tex]$ = 0.8(340)^2 -544(340) +97410 $[/tex]

=  4930

can someone help please?

Answers

Answer:

D

Step-by-step explanation:

Suppose B is between A and C. If AB = 7 and AC = 11, find BC.
A
7
С
B.
11
BC = 4
BC = 18
BC = 7
BC = 12

Answers

answer is BC=4

notice that the starting point is A and the endpoint is C, it stated that from A to B the value is 7 and from A to C the value is 11 we just need to subtract AC-AB to find the third value of it

AC-AB= 11-7 =4

4. Assume that you have a part-time job at which you work 20 hours per week at the rate
of $7.50 per hour (net of all payroll deductions). You are also required by your parents to
pay all your expenses, except rent and three meals a day, from those earnings. How much
per minute would you earn?

Answers

Answer:

0.125

7.50/60=1.25

since there 60 minutes in one hour you would divide the hourly rate by 60.

A random sample of adults were asked whether they prefer reading an e-book over a printed book. The survey resulted in a sample proportion of p′=0.14, with a sampling standard deviation of σp′=0.02, who preferred reading an e-book.

Answers

Answer:

The confidence interval is  (0.1008, 0.1792)

Step-by-step explanation:

According to the question, the data provided is as follows

p′=0.14

sampling standard deviation of σp′= 0.02

Based on the above information

The computation of the 95% confidence interval for the true or correct proportion is

Here we apply the z value of 95% confidence interval i.e. 1.96

Now the confidence interval is

[tex]= (pcap - z\times sigma, pcap + z\times sigma)\\\\= (0.14 - 1.96\times 0.02, 0.14 + 1.96\times 0.02)\\\\= (0.1008, 0.1792)[/tex]

4(2x-8)=3(2-3x) Pls tell Me what the answer is

Answers

Answer: X = 38/17

8x - 32 = 6 - 9x
8x = 6 - 9x + 32
8x = -9x + 38
8x + 9x = 38
17x = 38
X = 38/17

Decimal Form: 2.235294

A submarine dives below the surface, heading downward in two moves. If each move downward was 355 feet, where is the submarine after it is finished diving?

Answers

Answer: The submarine would be 710 feet below the surface after it is finished diving.

Step-by-step explanation:

Given: Each move downward was of 355 feet

If the submarine dives below the surface, heading downward in two moves.

Then, the total distance moved by submarine = 2 (355) feet

= 710 feet

Therefore, the submarine would be 710 feet below the surface after it is finished diving.

(x-6)(x2+3x+4) Please show working or at type a sentence on how you got it.

Answers

Answer:

x³-3x²-14x-24

Step-by-step explanation:

(x-6)(x^2+3x+4)

first multiply x by x^2+3x+4

x×x²=x³

x×3x=3x²

x*4=4x               add

x³+3x²+4x ( first part)

multiply -6 by x²+3x+4

-6x²-18x-24

x³+3x²+4x -6x²-18x-24  ( simplify)

x³-3x²-14x-24

A 351- foot rope is cut into three pieces. The second piece is twice as long as the first. The third piece is 3 times as long as the second. How long is the shortest piece of rope?

Answers

Answer:

87.75

Step-by-step explanation:

Help ASAP please
‍✌✌

Answers

Answer:

Step-by-step explanation:

1. [tex]\sqrt{72}[/tex]  break it apart so you can solve

   [tex]\sqrt{2} *\sqrt{36}[/tex]

   [tex]\sqrt{2}[/tex] * 6

   6[tex]\sqrt{2}[/tex]

It's irrational. [tex]\sqrt{2}[/tex] can not be written as a ratio.

2.

   rational

   a.  -9  

         3.0

         [tex]\frac{2}{5}[/tex]

         2.4222...    2/90 = .22222....     36/90 = .4    180/90 = 2

                            2+36+180 = 218/90 which is a ratio, so it's rational

   irrational

   b.  [tex]\sqrt{8} = 2\sqrt{2}[/tex]  

          [tex]\pi[/tex]

3.

    6.51326.... and [tex]\sqrt{39}[/tex]

The [tex]\sqrt{39}[/tex] = 6.2445

Comparing to the 6.51326, it has a difference of 0.268262. Thus, 6.51326 is greater than square root of 39.

       

(r/s)(3) = ?

please help.

Answers

Answer:

[tex]\frac{3r}{s}[/tex]

Answer:

It’s 2

Step-by-step explanation:

(-2)+1 can someone help me​

Answers

Answer:

-1

Step-by-step explanation:

When you add a positive num to a negative number the negative number goes in the direction towards zero.

hope this helps you:)

Fill in the missing steps and justifications used to solve the given equation.

Answers

Right box
3. Simplification
4. Addition property of equality

Left box
6x-7+7=12+7

X=19/6

In Left BOX

6x-7 + 7 = 12+ 7x = 19/6

in Right Box

Simplification Addition property of equation

What are the Properties of the equation?

Equilibrium, reflexivity, symmetry, transitivity, and the properties of operations are all solved by equations' properties. These properties hold true in propositional language as well as in algebra and arithmetic.

Hence, Here the solution is a step toward solving the given equation by using simplification.

Learn more about the properties of the equation here:

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Evaluate 3z when z=9.

Answers

Answer:

27

Step-by-step explanation:

Replace the variable (z) with 9

3(9) or 3 × 9 = 27

Answer:

the answer is 27

plz give brainlist

hope this helped

What are the solution(s) of X2-4=0?

Answers

Answer:

-2 or 2

Step-by-step explanation:

So we have the equation:

[tex]x^2-4=0[/tex]

Add 4 to both sides:

[tex]x^2=4[/tex]

Take the square root of both sides:

[tex]x=\pm 2[/tex]

Therefore, our answers are -2 or 2.

And we're done :)

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