PLEASE HELP DUE IN 3 minutes

Answer:

He started with 37 CDs

Step-by-step explanation:

Variable: Let x be the number of CDs he got at the start

Equation: (x + 7) /2 = 22

x + 7 = 44

x = 37

Check: (37+7) /2 = 22

Answer:

its a

Step-by-step explanation:

yea

Answer:

D

Step-by-step explanation:

D is a function because it passes the vertical line test, meaning that you can draw a vertical line anywhere through the graph and it will only it the lines one time.

Answer:

D u welcome

Step-by-step explanation:

I'm cant say step by step

let x be how much longer she can run the race and still beat her previous time

55(min) + x(min) < 1(hr) + 10(min)

55(min) + x(min) < 60(min) + 10(min)

55 + x < 60 + 10

x < 60 + 10 - 55

x < 15(min)

Answer:

Answer is A

Step-by-step explanation: Taking the test so the answer is A

Answer:

i think its c im not sure

Step-by-step explanation:

Answer:

x = -9

Step-by-step explanation:

3^16 = (1/9)^x

9^18 = 9^-x

On comparing co-efficients :

-x = 9

x = -9

Answer:

wsp, answer is 5,5 i'm pretty sure

Step-by-step explanation:

or its 0.5

Answer:

I think the answer is 6. i dont know if that's right though

Answer:

11x17

Step-by-step explanation:

The numbers that multiply to give 187 are 11 and 17.

Given is to multiply two numbers to give 187.

The numbers that multiply to give 187 are -

11 x 17

11 x (10 + 7)

(11 x 10) + (11 x 7)

110 + 77

187

Therefore, numbers that multiply to give 187 are 11 and 17.

To solve more questions on multiplication, visit the link below -

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Answer:

0 hundredths. 2 tenths and 8 ones

Answer:

409968000

Step-by-step explanation:

13 rounded years is equal to 409968000 seconds

Answer:

960

Step-by-step explanation:

You have to figure out what 1/4th of 640 is, which is 160.

It says that number is 1/6th of boys, so you multiply by the inverse.

160x6 = 960

well since all of the girls = 4/6ths of the boys that would mean 24/24girls=16/24boys  

16/24 is 66.666666666667% of 24/24

66.666666666667% of 640 is426.666666667 but in my head i would round up so:

Approximately

427 boys and 213 girls.

Answer:

[tex]f(x) = 4\times (3)^{x}[/tex].

Step-by-step explanation:

Exponential functions are in the form [tex]f(x) = a\, \left(b^{x}\right)[/tex],  where [tex]a[/tex] and [tex]b[/tex] are constants with [tex]b > 0[/tex].

In this question, the function should satisfy that [tex]f(2) = 36[/tex] and [tex]f(3) = 108[/tex]. Hence, constants [tex]a[/tex] and [tex]b[/tex] should ensure that:

[tex]a \cdot b^2 = f(2) = 36[/tex], and

[tex]a \cdot b^3 = 108[/tex].

Rewrite the left-hand side of the second equation: [tex]a \cdot b^{3} = a \cdot b^2 \cdot b[/tex].

Substitute the first equation [tex]a \cdot b^{2} = 36[/tex] into the second:

[tex]a \cdot b^2 \cdot b = 108[/tex].

[tex]36\, b = 108[/tex].

[tex]\displaystyle b = \frac{108}{36} = 3[/tex].

Substitute [tex]b = 3[/tex] into either equation (for example, the first equation) and solve for [tex]a[/tex]:

[tex]a \cdot 3^2 = 36[/tex].

[tex]a = 4[/tex].

Hence, the exponential function [tex]f(x) = a\cdot b^{x} = 4 \times (3)^{x}[/tex] should satisfy the requirements of this question.

Answer:

10=10

Step-by-step explanation:

_1(12)+14=2(12)+2

3.

Answer:

Rectangle

Step-by-step explanation:

the answers is 9/4

simplified its 2 1/4 in mixed number form

decimal is 2.25

Answer:

43

Step-by-step explanation:

Answer:

Always

Step-by-step explanation:

Thank you have a great day

Answer:

1/15

Step-by-step explanation:

2/5-1/3=6/15-5/15=1/15

The percentage of the trip that is still ahead of you is 69.2%.

The percentage is given as,

Percentage (P) = [Final value - Initial value] / Initial value x 100

You are going to visit your aunt who lives 25 miles away. You have already traveled 7.7 miles.

The percentage of the trip that is still ahead of you is calculated as,

P = [(25 - 7.7) / 25] x 100

P = (17.3 / 25) x 100

P = 0.692 x 100

P = 69.2%

More about the percentage link is given below.

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Answer:

Student A Mean: 697/8=87.125

Student A Mean Absolute Deviation: 7.1563

Student B Mean: 756/9=84

Student B Mean Absolute Deviation: 7.3333

Answer:

Your Answer Should Be C

Step-by-step explanation:

Because 2/3x5=10/3

And Then C, which is 2x5÷3= 10÷3 =10/3 :D

Answer:

2/3 x 5 = 10/3 in fraction form. 2/3 x 5 = 3.3333 in decimal form.

Step-by-step explanation:

C is the answer

Answer:

where is the numer line?

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

the rate of change is Rise/ Run

= Δy / Δx

= (y2 – y1) / (x2 – x1)

= (1 - (-1))/(-1 - (-2))

=2/1

=2

Answer:

You seem to have not posted the whole problem

You did not seem to say the problem

But mabye 30

Answer:

22 or 4+12+6

Step-by-step explanation:

Since A is equal to 2, times 2 by 2 and get 4

Since B= 4 you times 3 by 4 and get 12

4+12 is 16

16 plus 6 is 22

Answer:

A) It will get to a temperature of 125°F at 9:19 PM

B) It will get to a temperature of 150°F at 9:16 PM

C) as time passes temperature approaches the initial temperature of 450°F

Step-by-step explanation:

We are given;

Initial temperature; T_i = 450°F

Room temperature; T_r = 70°F

From Newton's law of cooling, temperature after time (t) is given as;

T(t) = T_r + (T_i - T_r)e^(-kt)

Where k is cooling rate and t is time after the initial temperature.

Now, we are told that After 5​ minutes, the temperature is 300°F.

Thus;

300 = 70 + (450 - 70)e^(-5k)

300 - 70 = 380e^(-5k)

230/380 = e^(-5k)

e^(-5k) = 0.6053

-5k = In 0.6053

-5k = -0.502

k = 0.502/5

k = 0.1004 /min

A) Thus, at temperature of 125°F, we can find the time from;

125 = 70 + (450 - 70)e^(-0.1004t)

125 - 70 = 380e^(-0.1004t)

55/380 = e^(-0.1004t)

In (55/380) = -0.1004t

-0.1004t = -1.9328

t = 1.9328/0.1018

t ≈ 19 minutes

Thus, it will get to a temperature of 125°F at 9:19 PM

B) Thus, at temperature of 150°F, we can find the time from;

150 = 70 + (450 - 70)e^(-0.1004t)

150 - 70 = 380e^(-0.1004t)

80/380 = e^(-0.1004t)

In (80/380) = -0.1004t

-0.1004t = -1.5581

t = 1.5581/0.1004

t ≈ 16 minutes.

Thus, it will get to a temperature of 150°F at 9:16 PM

C) As time passes which means as it approaches to infinity, it means that e^(-kt) gets to 1.

Thus,we have;

T(t) = T_r + (T_i - T_r)

T_r will cancel out to give;

T(t) = T_i

Thus, as time passes temperature approaches the initial temperature of 450°F

Answer:

he got 80 percent correct