9x-4y=17 for y
answer it for me plz

Answer:

0.8944

Step-by-step explanation:

We start by calculating the z-score

To calculate the z-score, we shall need the standard deviation

Mathematically, standard deviation is square root of variance

that will be; SD = √108,900 = 330

Formula for z-score is;

x-mean/SD/√n

where n is 65 in this case

z-score = (3882-3831)/330/√65 = 1.25

The probability we want to calculate is;

P( X < 1.25)

we can use the standard normal distribution table for this

Using the table;

P( X < 1.25) = 0.89435 which is 0.8944 to 4. decimal places

Answer:

0.8944

Step-by-step explanation:

Answer:

74

Step-by-step explanation:

Answer:

[tex]820.681 = 8 \times 10^2 + 2 \times 10^1 + 6 \times 10^{-1} + 8 \times 10^{-2} + 1 \times 10^{-3}[/tex]

Step-by-step explanation:

[tex]820.681 = 8 \times 100 + 2 \times 10 + 6 \times 0.1 + 8 \times 0.01 + 1 \times 0.001[/tex]

[tex]820.681 = 8 \times 10^2 + 2 \times 10^1 + 6 \times 10^{-1} + 8 \times 10^{-2} + 1 \times 10^{-3}[/tex]

Answer:

I'd say it's C... that's shift on x-axis and the plus symbolizes the shift in the minus "region" because that's swapped you count how many steps you have to go to get to the zero.

Answer:

The rate of change = 3 gallons of water per minute

initial value = 40 gallons of water

Step-by-step explanation:

Initial volume of the bathtub = 40 gallons of water

Average rate of drain = 3 gallons of water per minute

what is the rate of change and initial value of the linear function that models the amount of water in the bathtub after starts draining?

The rate of change is 3 gallons of water per minute and initial value is 40 gallons of water

Answer:

its b

Step-by-step explanation:

its b i for some reason got it right

Answer:

113

i did it in the caculater and this is what showed.

Answer:

That's odd, the actual answer is 6650 / 35 = 190

Good luck! Hope this helped :)

Answer:

£300.

Step-by-step explanation:

He has £900 left after paying rent.

The fraction he spends on bills = 3(4+3+2)

= 3/9

= 1/3.

So he spends 900 * 1/3 = £300 on bills.

Answer: t=12

Step-by-step explanation:

t-2=10

add 2 to both sides of the equation

t=12

Answer: No It's not proportional as the constant of proportionality for both of them.are different.

Step-by-step explanation:

For the first part of the question, a 150-pound teenager eats 5.5 pounds of food per day, we've to calculate the constant of proportionality. This will be:

y = kx

150 = 5.5k

k = 27.27

For the second part of the question, a 250-pound panda eats 40 pounds of bamboo a day. we've to calculate the constant of proportionality. This will be:

y = kx

250 = 40k

k = 250/40

k = 6.25

This shows that the 150-pound teenager eats 5.5 pounds of food per day, is not proportional to a 250-pound panda eating 40 pounds of bamboo a day because th e value of k are different.

Answer:

$2.50 per ounce

Step-by-step explanation:

12.50÷5= 2.50

Answer:

$2.50c

Step-by-step explanation:

Answer: D) Period

You could refer to this as the time period. Usually the time period is in months. So you make monthly interest payments, often with the principal mixed in somewhat.

Answer:

2×2^2 +5×2 -6

= 2×4 +10 -6

= 8+10-6

= 18-6

= 12

Answer:

D.

Step-by-step explanation:

135 - 18 = 117 + 5 = 122

Answer:

D. 122 pounds

Step-by-step explanation:

135-18=117

117+5=122

Answer:

14

Step-by-step explanation:

Answer: (x + 2) • (x - 1) • (2x - 3)

Step-by-step explanation:

Answer:

45%

Step-by-step explanation:

First we find the difference between the prices,

[tex]275-150[/tex]

is 125

and

[tex]125/275=0.454545454545.....[/tex]

which in percentage is

[tex]45.4545454...[/tex]

and that rounds to 45%

Answer:

Step-by-step explanation:

6(2b-4)  sub 5 for b

6(2(5)-4)

6(10-4)

60-24

36

9514 1404 393

Answer:

Step-by-step explanation:

For l laps around a 1/4 mile track, the total distance is ...

  l×(1/4)

After adding 2 1/2 miles to that, Gabriella's total distance was 4 miles:

  l×(1/4) +(2 1/2) = 4 . . . . an equation to find l

__

We can solve this equation by subtracting 2 1/2, then multiplying by 4.

  l×(1/4) = 1 1/2

  l = 4(1 1/2)

  l = 6

Gabriella ran 6 laps on the track.

Answer:

x= 15/2 im pretty sure

Step-by-step explanation:

We want to solve the given linear equation, we will find that the solution is x = -3.7

Here we have the equation:

3.8 = 2*x - 11.2

We want to solve this for x, so we can start by subtracting 11.2 in both sides to get:

3.8 - 11.2 = 2*x

-7.4 = 2*x

Now we can divide both sides by 2:

-7.4/2 = x = -3.7

So the solution is x = -3.7

If you want to learn more about linear equations, you can read:

https://brainly.com/question/4074386

Answer:

z = 13

hope it helps ;))

Answer:

Chelsea can buy 5 shirts.

Step-by-step explanation:

You can't split shirts when buying them, so Chelsea can buy 5 shirts.

Answer:

-4/1

Step-by-step explanation:

Answer:

i;m pretty sure your answer is -4/1

Step-by-step explanation:

i hope this helped you

Answer:

divide it

Step-by-step explanation:

Step-by-step explanation:

Mass of Ball- 0.20KG

Force applied-80N

F= m×a

M=f÷a

M= 80÷0.20

Answwer= 400 m/s(sq)

Answer:

11700

Step-by-step explanation:

plato

Answer:

11700

Step-by-step explanation: