Question 4 of 5
A tank full of water is leaking at a constant rate for 30 minutes. The equation
y=-7x + 300
gives the amount of water in the tank, where y is the number of liters and xis
the number of minutes since the tank began to leak. Which statement is true?
A. There were 300 liters in the tank after 20 minutes, and it is
decreasing by 7 liters per minute.
O B. There were 300 liters in the tank when the leak started, and it is
decreasing by 7 liters per minute.
C. There were 7 liters in the tank when the leak started, and it is
decreasing by 300 liters per minute.
O D. There were 7 liters in the tank when the leak started and it is
increasing by 300 liters per minute.

Answers

Answer 1
It’s B, -7x is the rate of the water decreasing while 300 is the starting point.

Related Questions

Is 123895 rational or irrational?

Answers

It's rational! <3

Have a nice day/night!!

Which relation below represents a one-to-one function? A 2-column table has 5 rows. The first column is labeled x with entries 5, 14, 7, 13, 12. The second column is labeled f (x) with entries 26, 197, 50, 170, 197. A 2-column table has 5 rows. The first column is labeled x with entries negative 2, negative 1, 0, 1, 2. The second column is labeled f (x) with entries 5, 2, 1, 2, 5. A 2-column table has 5 rows. The first column is labeled x with entries 7.25, 7.5, 7.75, 8, 8.5. The second column is labeled f (x) with entries 11, 13, 15, 13, 11. A 2-column table has 5 rows. The first column is labeled x with entries 9, 2, 4, 1, 5. The second column is labeled f (x) with entries 12, 7, 9, 13, 5.

Answers

Answer:

D is the correct answer actually

Step-by-step explanation:

just took the unit review

Answer:

d

Step-by-step explanation:

Find the sum of the following expressions: (10.2x - 3.6) + (-5.7x - 1.5)

Answers

Answer:

0.6

Step-by-step explanation:

-4.5-5.1=0.6

Identify the constant term in this expression 0.25 + 2x + 4z +0.75y
A) 2x B) 4x C 0.25 D) 0.75y​

Answers

C) 0.25 is the answer because it has the lowest degree and doesn’t have a variable

Answer:

0.25..........................................................

.

When Angelo cashed a check for $170, the bank teller gave him 12 bills, some $20 bills and the rest $10 bills. How many bills of each denomination did Angelo receive?

Answers

Answer:

5 $20 bills and 7 $10 bills

Step-by-step explanation:

You need to have 12 bills, and their values must add up to $170. Start with a guess, and adjust the guess until you find the answer.

The total number of $20 bills and $10 bills must be 10.

I made a table below. I started with a guess and kept adjusting it.

Number of          Number of          Total

$20 bills               $10 bills               Value

8   ($160)              4    ($40)              $200      Value is too high.

6   ($120)              6    ($60)              $180       Value is close

5   ($100)              7    ($70)               $70        Correct value

Answer: 5 $20 bills and 7 $10 bills

m∠COX = m∠AOX + m∠

Answers:
COD
COE
COX
COA

Answers

Answer:

ok

Step-by-step explanation:

Answer:

m∠COA

Step-by-step explanation:

m∠COX = 80°

Here,

m∠COX = 40° + m∠COA

m∠COX = 40° + 40° = 80°

Thus, m∠COX = m∠AOX + m∠COA

-TheUnknownScientist

4. They were 30 problems on the test, Nancy got 20% wrong. How many
problems did Nancy get wrong?

Answers

Answer:

6

Step-by-step explanation:

Convert 0.0001 to a power of 10.
10^-4
10^4
10^-3
10^3

Answers

10^-4 i think (i’m pretty sure)

0.0001 is a very small number, so we will use the scientific notation to help us answer this. When using the scientific notation with very small numbers, we will multiply this number by 10. When we multiply a decimal, we "move" the decimal place to the right. The scientific notation states we will multiply until we get a number greater or equal to one, but less then 10. Our process will look something like this.

0.0001 -> 0.001 -> 0.01 -> 0.1 -> 1

We now have a number greater or equal to 1 but less then 10- which is 1!

Now, we have to find our exponent. How many times did we multiply by 10?

We multiplied 4 times. So now we have 10^4. But we are not done. For very small numbers, the exponent is negative, so our exponent is negative, In which leaves us with the answer of 10^-4.

With best wishes- Asia Gil <3

dog can someone please help

Answers

Answer:

-1-5x or C

Step-by-step explanation:

This becasue you need to mutipy the outside to the inside.Hope it helps

What is 0.612 repeating (meaning the repeating line is over 612) as a fraction

Answers

Answer:

[tex]\frac{612}{999}[/tex]

Step-by-step explanation:

To convert repeating decimals to fractions, you take the numbers that are repeating, in this case 612, and you see how many numbers are repeating. Here we have 3 numbers repeating and so you would divide 612 by 3 9's meaning 999. So 0.612 repeating is equal to [tex]\frac{612}{999}[/tex]. To make sure the answer is right, you can divide the numbers in a calculator to make sure you get the correct decimal.

4. What is the total volume of the grain silo? Explain how you found your answer.
Write your answer in the space below.

Answers

Answer:

Multiply the surface area by the height of the cylindrical portion of the silo to determine that area. A silo with a radius of 10 feet and a height of 20 feet for the cylinder has a volume of 6,280 cubic feet. Determine the area of the dome portion of the silo with the sphere volume formula: (4/3)(pi)(r^3).

Multiply pi, or 3.14, by the square of the radius to calculate surface area. Multiply the surface area by the height of the cylindrical portion of the silo to determine that area. A silo with a radius of 10 feet and a height of 20 feet for the cylinder has a volume of 6,280 cubic feet.

Step-by-step explanation:

the sum of 26 and twice a number

Answers

Answer:

the answer to your question is 78. and the algebraic expression is 26 times 2 equals 52, then 52 plus 26

A) -165 °
B) -125 °
C) 125 °
D) 165 °

Answers

Answer:

it might be B, but dont trust me on this one because im not so sure.

Step-by-step explanation:

srry i just dont do this yet i havent rlly learned this but ik a bit abt it so yea. have a great night !

HELP! WILL GIVE BRANLIEST!
(Question 12)

Answers

Ima go with 100 mill

Answer:

the first one I believe to be answer D, hope this helps

Is (yx1)+2 equal to y+2

Answers

(yx1) + 2
y + 2
yes you’re right !
correct! (yx1)+2 = y+2

Identify the most appropriate test to use for the following situation: A private and a public university are located in the same city. For the private university, 1046 alumni were surveyed and 653 said that they attended at least one class reunion. For the public university, 791 out of 1327 sampled alumni claimed they have attended at least one class reunion. Is the difference in the sample proportions statistically significant

Answers

Answer:

From the question we are told to test if the difference in the sample proportions statistically significant and given that the sample size is sufficiently large i.e  [tex]n_ 1 \ and \ n_2 \ is \ > \ 30[/tex] then the most appropriate test to use is  the

          Two samples z test

Step-by-step explanation:

What is the difference of the polynomials?
(5x^3+ 4x^2)-(6x^2-2x-9)

Answers

i think its B ......

The difference of the polynomials (5x3 + 4x2) – (6x2 – 2x – 9) is 5x3 – 2x2 + 2x + 9.

A polynomial is an expression consisting of variables and coefficients,

5x3 + 4x2 - (6x2 - 2x - 9)

= 5x3 + 4x2 - 6x2 + 2x + 9

= 5x3 - 2x2 + 2x +

How do I solve this ?

Answers

Answer:

See attachment :D

Step-by-step explanation:

y = 2/3x + 2

This is in slope-intercept form, y = mx+b. m is the slope, 2/3, and b is the y- intercept, 2. So you know the line intersects with the y-axis at (0,2). The slope is 2/3. So you can move up two points, then over three. Because it's a positive slope, you move right. This leaves you at point (0,3). Connect a line between these two points.

The line intersects with points (-3,0) and (0,2).

Hope this is helpful ^^ Good luck with your test :D

256 students were sitting in the cafeteria.47 students came in 32 went back to class​

Answers

Answer:

271

Step-by-step explanation:

256 + 47=303

303 - 32= 271

Kyoko is reading a book by her favorite author. She read the first 20 pages in One-half of an hour. Reading at the same pace, Kyoko wants to determine if she’ll have enough time to finish the book before she has to go to bed.

Answers

Answer:

It will take her 3 hours and 120 pages

Step-by-step explanation:

It was on edge pls mark brainliest

Answer:

b

Step-by-step explanation:

50 students are going on a field trip. 20 of the students are boys. What percent of students are girls

Answers

Answer:

60%

Step-by-step explanation:

first you make a fraction. 30 ore girls and thats your numerator. the denominator is 50. make it a whole 100 on the denominator. what you do to the bottom fraction you do to the top. we multiple by 2, so 30 is now 60. 60/100. reduce it to its lowest 3/5. divide 3 by 5. its .6. which is 60%

Answer:

60%

Step-by-step explanation:

p(n) = -8n^2 + 9n, Find p(10)

Answers

Answer:

first

put the value of p(10) in the place n,

2-multiply -8×10^2+9×10

3-:- -8×100+90

4:-800+90=710ans

Given: m || n



What is the value of x?

x =

Answers

Answer: x=8
Explanation: 46 degrees is a vertical angle to the equation, and when you plus in 8 you get 48, then subtract 2 you end up with 46 degrees. Hope this helps.

Which ratio is equivalent to 9: 180?
A5:200
B12:240
C10:400
D 8:560

Answers

Answer:

B: 12:240

Step-by-step explanation:

you can divide the ratios to see if they are equivalent.

9/180= 0.05 or 1/20

12/240= 0.05 or 1/20  

Answer:

a

Step-by-step explanation:

Find the area of the composite figure below.
6 9
15

Answers

Answer:

180

Step-by-step explanation:

Triangle: 1/2BH

Square: BH

1. Split up the shapes

2. Use the area formula for square and triangle

Square area: 135

Triangle area: 45

3. Add

Lines L and M are parallel. Like L can be represented by the equation 3x+4y=8. If line M passes through the point (2, -5), which equation can be used to find the equation of line M?

A) y-5= -3/4(x+2)
B) y+5=4/3(x+2)
C) y-5=4/3(x+2)
D) y+5=4/3(x-2)

Answers

Answer:D

Step-by-step explanation:

15 POINTS!!!
A recent survey suggests that 47% of all televisions are connected to the internet, 32% are voice controlled, and 22% are both connected to the internet and voice controlled. Suppose a television is selected at random and it is voice controlled. What is the probability that a randomly selected voice-controlled television is also connected to the internet?

0.15
0.47
0.69
0.79

Answers

Answer:

The correct answer is C. 0.69

Step-by-step explanation:

Because .22/.32 = 0.6875

Determine the volume of the parallelepiped with one vertex at the origin and the three vertices adjacent to it at (2, â1, â1), (2, 4, â2), and (2, â6, 1).

Answers

Answer:

23

Step-by-step explanation:

Here is the complete question

Find the volume of the parallelepiped with one vertex at the origin and adjacent vertices at (1, 0, -3), (1, 2, 4), and (5, 1, 0).

Solution

We find the volume of the parallelepiped by making a 3 × 3 column matrix whose columns are the corresponding coordinates of the vertices of the parallelepiped.

So, (1, 0, -3), (1, 2, 4)  and (5, 1, 0)

[tex]A = \left[\begin{array}{ccc}1&1&5\\0&2&1\\-3&4&0\end{array}\right][/tex]

The determinant of A is the volume of the parallelepiped. So,

detA = 1(2 × 0 - 4 × 1) - 1(0 × 0 - (-3) × 1) + 5(0 × 4 - (-3) × 2)

= 1(0 - 4) - 1(0 + 3) + 5(0 + 6)

= 1(-4) - 1(3) + 5(6)

= -4 - 3 + 30

= 23

So the volume of the parallelepiped is 23

Estimate the solution of the system of equations. Write the answer as an ordered pair.

Answers

Answer:

(-2.5, 2)

Step-by-step explanation:

just find where the points meet up lol

Amy, Dan, and mike are competing in a cooking competition. They all used different amounts of milk from a container holding 6 gallons of milk. Amy used 13

Answers

Answer:

2 1/6 containers of milk, if that's what you're asking.

Step-by-step explanation:

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