Casey took 25 in 135 days at this rate in how many days will she take another 10 tests

Answers

Answer 1
It will take her another 50 days to do 10 tests.

Related Questions

I need to find all real solutions. In this problem, a>0, a is not equal to 1

Answers

|log[a] x| = log[a^2] x + 1

log[a] x = log[a^2] x + 1 (Eq. 1)       or      log[a] x = -log[a^2] x - 1 (Eq. 2)

Eq. 1:

(log x)/(log a) = (log x)/(log a^2) + 1

(log x)/(log a) = (log x)/(2log a) + 1

2log x = log x + 2log a

log x = 2log a

log x = log a^2

x = a^2

Eq. 2:

log[a] x = -log[a^2] x - 1

(log x)/(log a) = -(log x)/(log a^2) - 1

(log x)/(log a) = -(log x)/(2log a) - 1

2log x = -log x - 2log a

3log x = -2log a

log x^3 = log a^(-2)

x^3 = a^(-2)

x = a^(-2/3)

x = 1/a^(2/3)

Answers:

x = a^2 or x = 1/a^(2/3)

write $80 for 16 tickets as a unite rate

Answers

5 dollars per ticket

Hope this helps (:
Hello There!

By unit rate, it means the cost per ticket.
Divide total by number of tickets:
80/16 = 5
Therefore it is $5 per ticket.

Hope This Helps You!
Good Luck :) 

- Hannah ❤

solve this equation
h(t)= -16t+175t+500

Answers

Use the quadratic formula where a = -16, b = 175 and c = 500 to find t. See picture for quadratic formula.

solve this system of linear equations. separate the x- and y- values with a coma. -x=29-14y
-9x=-19+14y

Answers

We are given the two equations:

(1) -x=29-14y
(2) -9x=-19+14y

 

Multiply (1) by 9:

-9x = 261 – 126y

 

Subtract the two equations:

-9x = 261 – 126y

-

-9x=-19 + 14y

 

0 = 280 – 140y

140y = 280

y = 2

 

From (1):

-x = 29 – 14 (2)

x = -1

 

Answers:

x = -1

y = 2

A dentist orders 15 boxes of floss and 20 boxes of toothbrushes each month. Floss is sold 79 to a box, how many items does the dentist order each month

Answers

35 cause it tells you he buys 15 box (boxes as in items) and 20 boxes add them together is 35 items

complete question:

A dentist orders 15 boxes of floss and 20 boxes of toothbrushes each month. Floss is sold 70 to a box and toothbrushes are sold 50 to a box . how many items does the dentist order each month.

Answer:

The dentist orders 1050 number of floss and 1000 number of toothbrushes. The items are 2 different items namely floss and toothbrushes.

Step-by-step explanation:

The dentist orders 15 boxes of floss and 20 boxes of toothbrushes each month.

The floss is sold 70 to a box, this means about 70 numbers of floss occupies each box of floss.  To get the total number of floss items in the 15 boxes of floss, we have to multiply the number of boxes of floss by the number of floss present in each box. Mathematically,

70 × 15 = 1050  items of floss

The boxes of toothbrushes is 20 . For each box the number of toothbrushes is 50 . To get the total number of tooth brushes  we multiply the number of boxes by the total number of toothbrushes in each box.

50 × 20 = 1000  items of toothbrushes.

The dentist orders 1050 number of floss and 1000 number of toothbrushes. The items are 2 different items namely floss and toothbrushes.

if f(x)= -6x+6 then f^-1(x)=

Answers

recall that, to get the inverse relation of any expression, we start off by doing a quick switcharoo on the variables, then we solve for "y".

[tex]\bf \stackrel{f(x)}{y}=-6x+6\qquad inverse\implies \boxed{x}=-6\boxed{y}+6 \\\\\\ x-6=-6y\implies \cfrac{x-6}{-6}=y\implies -\cfrac{x}{6}+1=\stackrel{f^{-1}(x)}{y}[/tex]

To find the inverse of f(x) = -6x + 6, swap the variables and solve for y, yielding the inverse function f^-1(x) = 1 - (x/6).

To find the inverse function, f-1(x), of the given function f(x) = -6x + 6, you need to follow a series of steps. First, swap the 'x' and 'y', so it becomes x = -6y + 6. Next, solve this equation for 'y' to find the inverse function. Add 6x to both sides to get x + 6y = 6, then subtract x from both sides to have 6y = 6 - x. Dividing both sides by 6 results in y = 1 - (x/6). Therefore, the inverse function is f-1(x) = 1 - (x/6).

AB = 2 and AC = 11. Find m∠C to the nearest degree.

Answers

Answer:

10°

Step-by-step explanation:

To find this, we look at the sides of the triangle that we are given and their position in relation to ∠C.

AB is opposite ∠C and AC is adjacent to ∠C.

The ratio of opposite/adjacent is the ratio of tangent.  This gives us the equation

tan C = 2/11

To solve this for C, we take the inverse tangent of each side:

tan⁻¹(tan C) = tan⁻¹(2/11)

C = 10.305 ≈ 10°

The measure of the angle ∠c will be 10°.

What is trigonometry?

The branch of mathematics that sets up a relationship between the sides and the angles of the right-angle triangle is termed trigonometry.

The trigonometric functions, also known as circular, angle, or goniometric functions in mathematics, are real functions that link the angle of a right-angled triangle to the ratios of its two side lengths.

To find this, we look at the sides of the triangle that we are given and their position in relation to ∠C.

AB is opposite ∠C and AC is adjacent to ∠C.

The ratio of opposite/adjacent is the ratio of a tangent.  This gives us the equation

tan C = 2/11

To solve this for C, we take the inverse tangent of each side:

tan⁻¹(tan C) = tan⁻¹(2/11)

C = 10.305 ≈ 10°

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A spherical block of ice melts so that its surface area decreases at a constant rate: ds/dt = - 8 pi cm^2/s. calculate how fast the radius is decreasing when the radius is 3cm. (recall that s = 4 pi r^2.)

Answers

The rate a which the surface area, S, decreases is
[tex] \frac{dS}{dt} =-8 \pi \, cm^{2}/s[/tex]

The surface area is
S = 4πr²
where r =  the radius at time t.

Therefore
[tex] \frac{dS}{dt} = \frac{dS}{dr} \frac{dr}{dt} =8 \pi r \frac{dr}{dt} \\\\ -8 \pi = 8 \pi r \frac{dr}{dt} \\\\ \frac{dr}{dt} =- \frac{1}{r} [/tex]

When r = 3 cm, obtain
[tex] \frac{dr}{dt}]_{r=3} = - \frac{1}{3} \, cm/s [/tex]

Answer:  -1/3  cm/s  (or -0.333 cm/s)

Give the numerical value of n corresponding to 5d.

Answers

I need more info to work with

Final answer:

The numerical value of n for the 5d orbitals is 5, which indicates that the d subshell in question is located in the fifth principal energy level of an atom.

Explanation:

The numerical value of n corresponding to the 5d orbitals is 5. In the context of atomic and quantum physics, the principal quantum number, denoted as n, signifies the principal electronic shell of an atom. Since the question refers to 5d, it means we are discussing the d subshell in the fifth principal energy level (n=5).

For a d subshell, which is represented by the azimuthal quantum number (l) having a value of 2, the first principal shell where a d subshell appears is when n=3. Therefore, the 5d subshell is present in the fifth principal energy level. As for the ml values of the d orbitals, which represent the magnetic quantum number, they can be -2, -1, 0, +1, or +2 for any d subshell.

What is a 6% increase to $62,900

Answers

6% = 0.06

multiply:

62900*0.06 = 3,774 ( Would be the amount of increase)

add:

62900 + 3774 = 66,674 (would be the new total)

What is thirty-four thousand centimeters per second in scientific notation

Answers

The answer I got was 3.4 x 10^4 cm per second.  To convert 34,000 to scientific notation, I moved the decimal place at the last 0 of 34000 to four places to the left to get from 34000. to 3.4. Whenever you move the decimal to the left, the exponent will be a positive number. I got 10^4 because I move four places to the left. 

As a result, I got 3.4 x 10^4 per second. (Please check my method to see if it is correct)

Also, if you move the decimal to the right, the exponent will be negative. 

The speed of thirty-four thousand centimeters per second in scientific notation is 3.4  x 10^2 meters per second, after converting centimeters to meters.

The speed of thirty-four thousand centimeters per second can be expressed in scientific notation by first converting it to the base unit of meters per second (since one meter is equal to one hundred centimeters) and then expressing it in the form of a significant figure followed by the power of 10.

First, convert centimeters to meters:

34000 centimeters = 34000 / 100 meters = 340 meters.

Now, express this in scientific notation:

340 meters/second = 3.4 x 102 meters/second.

This shows the speed in scientific notation with the unit meters per second, which is a combination of two SI units.

it is 2 kilometers from Yoko's house to the nearest mailbox. How far is it in meters?

Answers

1 km = 1000 meters.  You want to convert 2 km to meters.  Multiply 
              1000 meters
2km by -------------------- and note that "km" will cancel out.  What's left?
                   1km

Translation of the graph. I can never get these right.

Answers

You're finding the y value from the function here. Basically, what the function equals is the y value.

Since you're finding the y value from the x value here, and you added 5 more to the x value in g(x), this means that it was translated 5 units up, because if you increase with the y value, it means that you're moving up on the coordinate graph.

So then your answer would be the third choice: The graph of g(x) is the graph of f(x) translated 5 units up.

could someone help me? Don’t understand what to do

Answers

The answer would be D (20,493) because you would multiply 75.9 times 270.

Maria put $500 into a savings account. She made no more deposits or withdrawals. The account earns 2% simple interest per year. How much money will be in the account after 5 years?5,000,50,550,1000

Answers

Hello! The formula for simple interest is prt. That means multiply the principal (initial amount) by the rate (simple interest rate) by time (usually in months or years). $500 is the principal and 2% is the interest rate. Multiply both numbers. 500 * 2% (0.02) is 10. $10 is the simple interest given out per year. We're looking for the total for 5 years. 10 * 5 is 50. Add the amount of interest to the principal. 500 + 50 is 550. There. Maria will have $550 in her savings account after 5 years. The answer is C: 550.

Is the given answer a reasonable solution to the problem 7.92•10.21=88.8632

Answers

When you multiply the two factors, the answer is 107.8357. So the answer is yes. Hope this helps.

What is the distributative answer to 85 divided by 5 answer

Answers

85/5
(50+35)/5
50/5 + 35/5
10+7=17

85 divided by 5 equals 17.

To find the answer to 85 divided by 5 using the distributive property, we break 85 into simpler numbers that are easier to divide by 5. For example:

Step 1: Write 85 as a sum of numbers that can easily be divided by 5:
85 = 50 + 35

Step 2: Divide each part by 5:
50 ÷ 5 = 10
35 ÷ 5 = 7

Step 3: Add the results:
10 + 7 = 17

Therefore, 85 divided by 5 equals 17.

Mikayla withdraws​ $20 on 4 different days during a week. Find the total change in her account balance after the withdrawals.

Answers

20 times 4 = 80

 so the change in her account would be negative 80 dollars

The change in her account after 4 withdrawals of $20 the change in her account will be $(D - 80)

What is a numerical expression?

A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.

Given that Mikayla withdraws​ $20 on 4 different days during a week.

Assuming she had $D before she had made any withdrawals.

∴ The situation can be represented numerically as,

(D - 20 - 20 - 20 - 20) dollars.

= (D - 80) dollars.

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George borrowed $1,895.50 for two years. The total amount he repaid was $2,189.38. How much interest did he pay for the loan?

a. $454.50
b. $293.88
c. $227.73
d. $455

Answers

your answer would be B. $293.88
the answer is B okkkkkk cool yeah

Find the standard matrix of the linear transformation t(x, y, z) = (x − 2y + z, y − 2z, x + 3z).

Answers

[tex]T(x,y,z)=(x-2y+z,y-2z,x+3z)=\begin{bmatrix}1&-2&1\\0&1&-2\\1&0&3\end{bmatrix}\begin{bmatrix}x\\y\\z\end{bmatrix}[/tex]

F the height remains fixed and the side of the base is decreasing by 0.002 meter/yr, what rate is the volume decreasing when the height is 180 meters and the width is 200 meters?

Answers

The original volume equation looks like this: V = 1/3 * h * (x^2) 
After the side is reduced by 0.002, the new volume would look like V1 = 1/3 * h * (x-0.002) ^ 2 

Then we have: 
V-V1 = 1/3*h*(x^2) - 1/3*h*(x – 0.002) ^2 


= 1/3 * h *(x^2 - (x – 0.002) ^2) 


= 1/3 * h * (0.004x - 0.00004) 


The rate of decreasing is computed by:


(V-V1)/V * 100% = [1/3 * h *(0.004x - 0.00004)] / [1/3 * h * (x ^ 2)] * 100% this would be equal to (0.004x - 0.00004) / (x^2) * 100% 

So replace x by 200, you’ll get:

(0.004(200) - 0.00004) / (200^2) * 100% 

= 0.001999% is the rate of decreasing.

write 60,000+9,000+400+90+8 in standard form

Answers

the answer is 69,498


the answer is 69,498

If g(x) = x3 - 5 and h(x) = 2x - 2, find g(h(3))

Answers

g(h(3)) simply means g of h of 3
mathematically represented as:
h(3)=2(3)-2 which gives 4
you then substitute 4 with X in g(x)
we then have g(h(3)) where h(3)=4 and X is also =h(3) as
g(4)=4^3-5
=59

• • g(h(3))=59

The required simplified value of the g(h(3)) is given as 59.

What is simplification?

The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.

Here,
g(x) = x³ - 5 and h(x) = 2x - 2

h(3) = 2(3) - 2
h(3) = 4


g(h(3)) = 4³ - 5
         = 64 - 5
         = 59

Thus, the required simplified value of the g(h(3)) is given as 59.

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"At a college, 4/5 of the students take an english class. Of these students, 5/6 take composition. Which fraction of the students at the college take compostion

Answers

4/5 of a college takes an english class.

5/6 of the 4/5 of the college takes composition.

Thus (5/6)*(4/5) = 20/30 = 2/3 of the college takes composition.

Answer:2/3

Step-by-step explanation:

Which of the following statements describes the process for solving 4 x ≥ -24?

Divide both sides of the inequality by -24 and flip the symbol.

Divide both sides of the inequality by -24 but don't flip the symbol.

Divide both sides of the inequality by 4 and flip the symbol.

Divide both sides of the inequality by 4 but don't flip the symbol.

Answers

Divide both sides of the inequality by 4 but don't flip the symbol.

First, you have to isolate the x, and so you divide by 4

However, because you are not dividing by a negative number, you will keep the sign the way it is

hope this helps :D
Hello Charlie!

The correct answer is option D

Divide both sides of the inequality by 4 but don't flip the symbol.


------------------------
Note: The only time you flip the symbol is when we divide by negative sign.


I hope this helps!

Find the value of c such that the line y = 9/4 x + 9 is tangent to the curve y = c x .

Answers

Final answer:

The value of c such that the line y = 9/4 x + 9 is tangent to the curve y = c x is 9/4. This is because a line is tangent to a curve when it touches the curve at exactly one point, hence the slope of the given line (9/4) will be equal to the value of c, which is the slope of the curve.

Explanation:

The problem asks us to find the value of c such that the line y = 9/4 x + 9 is tangent to the curve y = c x. A line is tangent to a curve when it touches the curve at exactly one point. In this context, the slope of the given line (9/4) will be equal to the value of c since in the line equation y = c x, c is the slope. So the value of c is 9/4.

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help please #mathhelp

Answers

The answer is:  " 14 " .
_____________________________________________________
Explanation:
_____________________________________________________
If  f(x) = (x - 5) / 3 ; 
_____________________________________________________
 To get f⁻¹(x) ;  

Take:  " f(x) = (x - 5) / 3 ;

Substitute "y" in lieu of the notation, " f(x)" ; 

and write as:  "y = (x - 5) / 3 " ; 

Then, replace "x" with "y"; and "y" with x" ; 
______________________________________
   "x = (y -5) / 3 " ;
______________________________________
Now, rewrite, solving for "y" in terms of "x" ;
______________________________________
     y - 5 = 3x  ;

Add "5"  to each side of the equation; to isolate "y" on one side of the equation, and to solve for "y" in terms of "x" ;     y - 5 + 5 = 3x + 5 ;
             y = 3x + 5 ; 
Now, substitute:  "f⁻¹(x)" for "y" ; and rewrite:

            f⁻¹(x)  = 3x + 5 .
_________________________________________
The question asks:  " Solve f⁻¹(3) ".

We have:  " f⁻¹(x)  = 3x + 5 " ;  so; to find, " f⁻¹(3)" ; we plug in "3" for the values of "x" in the expression and solve;
 
               f⁻¹(3) = 3(3) + 5  =  9 + 5 = 14
_____________________________________________
The answer is:  " 14 " .
_____________________________________________

complete the calculation how to find partial products

1 2 4
× 2
----------

Answers

The first step is to write each factor in expanding notation.

This is:

- 124 = 100 + 20 + 4
- 2 = 2

Now muliply 2 times each term of the terms 100, 20 and 4

=> 2 * 100 = 200

2 * 20 = 40

2 * 4 = 8

Then,

    (100 + 20 + 4 )
x                     2
-----------------------
                       8
                     40
                   200
------------------------
                   248

Round $8.0443 to the nearest cent

Answers

$8.04 because the four is rounding down, therefore it should be $8.04. 

I hope this helps. 

To round $8.0443 to the nearest cent, we leave the second decimal at 4, since the third decimal is also a 4, resulting in $8.04

To round $8.0443 to the nearest cent, you need to look at the third decimal place, which is a '4'. Since we are rounding to the nearest cent, we only keep two decimal places. If the third decimal place is 5 or more, we would round up the second decimal place. However, because it is 4, we do not round up. Therefore, $8.0443 rounded to the nearest cent is $8.04

which fraction correctly completes the equation

Answers

The answer is D=1/4.
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