When Jack got out of school at 3:00 pm the temperature was -2 F. By 8:00 pm the temperature was -12 F. A radio announcer reported that it was getting warmer. Is the announcer correct?

Answer:

It is A

Step-by-step explanation:

The proportan go's through the orgin also known as 0

Answer:

A

Step-by-step explanation:

Answer:

Step-by-step explanation:

19. 18-4.62=13.38 to spend on the systems or 6.69 a piece

20. 45000+300m=60000

m=50

45000+300m>60000  

He needs at least 50 machines to make the 60000.

Answer:

The value is  [tex]E(X) = 4 \ days[/tex]

Step-by-step explanation:

From the question we are told that

   The mean is  [tex]\mu = 36^oC[/tex]

    The standard deviation [tex]\sigma = 3^oC[/tex]

Generally the probability that in June , the midday  temperature is between  

39°C and 42°C is mathematically represented as

      [tex]P(39 < X < 42) = P(\frac{39 - 36}{3} < \frac{X - \mu }{\sigma} < (\frac{42 - 36}{3} )[/tex]

[tex]\frac{X -\mu}{\sigma }  =  Z (The  \ standardized \  value\  of  \ X )[/tex]

      [tex]P(39 < X < 42) = P(1 < Z <2 )[/tex]

=>   [tex]P(39 < X < 42) = P(Z < 2) - P( Z <1 )[/tex]

From the z table  the area under the normal curve to the left corresponding to  1 and  2  is

     P(Z   < 2)  = 0.97725

and

    P(Z   < 1)  = 0.84134

    [tex]P(39 < X < 42) = 0.97725 - 0.84134[/tex]

=>  [tex]P(39 < X < 42) = 0.13591[/tex]

Generally number of days in June would you expect the midday temperature to be between 39°C and 42°C

      [tex]E(X) = n * P(39 < X 42 )[/tex]

Here n is the number of days in June which is  n = 30

       [tex]E(X) = 30 * 0.13591[/tex]

=>    [tex]E(X) = 4 \ days[/tex]

Answer:

292.50 dollars

Step-by-step explanation:

P = 650 is the the principal.

r = 0.09 is the interest rate in decimal form.

t = 5 is the number of years.

i = 650*0.09*5

i = 292.50 is the simple interest.

Answer:

The probability is  [tex]P( |\^ p - p | < 0.03 ) = 0.9275[/tex]

Step-by-step explanation:

From the question we are told that

  The population proportion is  [tex]p = 0.49[/tex]

  The sample size is  n = 896

 Generally the standard deviation  of the sampling distribution is mathematically represented as

     [tex]\sigma_{p} = \sqrt{ \frac{p(1 -p )}{n} }[/tex]

=>  [tex]\sigma_{p} = \sqrt{ \frac{0.49(1 -0.49 )}{896} }[/tex]

=>  [tex]\sigma_{p} = 0.0167[/tex]

   Generally the the probability that the proportion of persons with a retirement account will differ from the population proportion by less than 3% is mathematically represented as

    [tex]P( |\^ p - p | < 0.03 ) = P( \frac{ | \^ p - p|}{\sigma_p } < \frac{0.03}{0.0167} )[/tex]

[tex]\frac{|\^ p - p |}{\sigma_p }  =  |Z| (The  \ standardized \  value\  of  \ |\^p - p| )[/tex]

=> [tex]P( |\^ p - p | < 0.03 ) = P(|Z| < 1.796 )[/tex]

=>  [tex]P( |\^ p - p | < 0.03 ) = P(- 1.796 < Z < 1.796 )[/tex]

=>   [tex]P( |\^ p - p | < 0.03 ) = P(1.796 < Z) - P(Z < -1.796 )[/tex]

From the z table  the area under the normal curve to the left corresponding to  1.796 and  - 1.796  is  

     [tex]P(Z < -1.796 ) = 0.036247[/tex]

    [tex]P(1.796 < Z) = 0.96375[/tex]

So

    [tex]P( |\^ p - p | < 0.03 ) = 0.96375 - 0.036247[/tex]

=>  [tex]P( |\^ p - p | < 0.03 ) = 0.9275[/tex]

Answer:

I think that the answers are B and D.

Step-by-step explanation:

(x^-3)^2

x^6 x^-12

I'm so sorry if it's wrong.

Answer:

The answer is C, D, E  

Step-by-step explanation:

ON EDGE 2021

Answer:

B or the third option you put.

Step-by-step explanation:

Solution :

It is given that only 13 cards that are Hearts that is used in a certain game.

And 2 hearts to each of the 3 players.

Therefore, the number of ways is

= [tex]$^{13} C_2 \times ^{11} C_2 \times ^{9} C_2$[/tex]

[tex]$= \frac{13 !}{11 ! \times 2!} \times \frac{11 !}{9 ! \times 2!} \times \frac{9 !}{7 ! \times 2!} $[/tex]

[tex]$=\frac{13 !}{7! \times 2! \times 2! \times 2!}$[/tex]

= 120 number of ways

Answer:

(3,1)

Step-by-step explanation:

Answer:

4. Median

5. Altitude

6. Altitude

7. Neither

Answer:

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

40 + 90 =130

180-130=50

Answer:

x=3

Step-by-step explanation:

Step 1: Factor left side of equation.

(2x−1)(x−3)=0

Step 2: Set factors equal to 0.

x−3=0

ANSWER:

x=3

Answer:

No, The 8 in the ones place of the decimal and the 8 in the thousands. Decimals go by variables of 10 if that makes sense

so hopping from the 8 in the ones place it would go 10, 100,1000.

Therefore the statement is false because the value between the eitghts is not 100 its 1000

Answer:

c

Step-by-step explanation:

Answer:

Step-by-step explanation:

-14 was the depth. constant rate -14, -28, -42, -56

Answer:

15 more paintings

Step-by-step explanation:

if m what? I'm confused

The required system of the equation that represents the number of quarters, q, and the number of dimes, d, in the jar is 0.10d + 0.25q = 8 and d + q = 50.

Given that,
Ronny is taking a jar with 50 dimes and quarters to Coin Master to redeem for dollar bills. The total value of his jar is $8.

Simultaneous linear equations are two- or three-variable linear equations that can be solved together to arrive at a common solution.

Here,
Let the number of the dimes be d and the number of the quarters be q,
According to the question,
The total of the coins is 50,
d + q = 50,
And this coins values is $8,
0.10d + 0.25q = 50   [sinnce value of one dime = 0.10 and value of one quarter is 0.25]

Thus, the required system of the equation that represents the number of quarters, q, and the number of dimes, d, in the jar is 0.10d + 0.25q = 8 and d + q = 50.

Learn more about simultaneous equations here:

https://brainly.com/question/16763389

#SPJ2

Answer:

96 feet

Step-by-step explanation: took quiz pls mark brainliest

Answer:

y = x - 2

General Formulas and Concepts:

Algebra I

Slope-Intercept Form: y = mx + b

Step-by-step explanation:

Step 1: Define

Slope m = 1

y-intercept b = -2

Step 2: Write linear function

y = x - 2

Answer: B, y=x-2

Step-by-step explanation:

The slope-intercept form is y=mx+b where m=slope and b=y intercept

therfore, subtituting 1 for m and -2 for b

y=x-2

Answer:

2a^2

Step-by-step explanation:

I can't really explain the GCF/LCM type problems ,my sincere apologies

Answer:

its 120

Step-by-step explanation:

60 multiply by 2 is 120

Answer:34

Step-by-step explanation:

7839

Answer:

20

Step-by-step explanation:

the other guys answer is 34 and its incorect

Answer:

C. 32

Step-by-step explanation:

substitute x=5

2(5) squared-2(5+4)

2(25)-2(5+4)

50-2(9)

50-18

32

Answer:

I guess make a certain amount of objects and divide them individually between two or more things or people within an even number. Example: 20 apples split into and even amount which would be 10 amongst let's say 2 ppl.