For each incorrect answer on a test, the teacher changes the total points possible by - 3
points. The total number of points possible on a test is 64. If a student has 8 incorrect
answers, what will be that student's score?

Answers

Answer 1

Answer:

40

Step-by-step explanation:

You would mutiply 8 times -3 and you would get -24 and 64 + (-24) = 64 - 24 which equals 40

Answer 2

The student's score on the test will be 40.

How to form an equation?

Determine the known quantities and designate the unknown quantity as a variable while trying to set up or construct a linear equation to fit a real-world application.

In other words, an equation is a set of variables that are constrained through a situation or case.

Let's say the mark for the correct answer is x

Then,

Correct marks(score) + incorrect marks = total marks

x + incorrect marks = total marks

x = total marks - incorrect marks

Now,

Total marks = 64

Incorrect marks = 8(3) = 24

So,

x = 64 - 24 = 40.

Hence "The student's score on the test will be 40".

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Related Questions

Select all the toolkit functions below that are discontinuous

Answers

Answer:

what functions?

Step-by-step explanation:


Which of the following
is equivalent to 1/4 ?
Select

Answers

Answer:

which of the following.

Step-by-step explanation:

sorry but ur question is not clear

Answer:

there no select

Step-by-step explanation:

sorry couldn't help you on that but 2/8 is equivalent

Select all decimals that are equivalent to ( 9 × 100 ) + ( 2 × 10 ) + ( 3 × 1 10 ) + ( 5 × 1 100 ) . A. 92.35 B. 920.350 C. 902.35 D. 92.350 E. 920.35 F. 920.035

Answers

This question is not written correctly

Complete Question

Select all decimals that are equivalent to ( 9 × 100 ) + ( 2 × 10 ) + ( 3 × 1/10 ) + ( 5 × 1/100 ) . A. 92.35 B. 920.350 C. 902.35 D. 92.350 E. 920.35 F. 920.035

Answer:

E. 920.35

Step-by-step explanation:

( 9 × 100 ) + ( 2 × 10 ) + ( 3 × 1/10 ) + ( 5 × 1/100 )

Step 1

(900) + (20) + (3/10) + (5/100)

Step 2

900 + 20 + 0.3 + 0.05

Step 3

920.35

Therefore, the answer = 920.35

Answer:

The Answer is actually B & E if doing this via Connexus. Connexus doesn't view putting an extra zero at the end to be incorrect (as it really isn't, it is just pointless) but Connexus does view NOT selecting that one as incorrect.

So while E is the correct answer, you will only get partial credit if you don't also select B. (With Connexus you can tell ones that are supposed to have multiple answers if they have check boxes instead of radio buttons.)

Step-by-step explanation:

Billy jogs 4/5 kilometers every minute how many kilometers does he jog after 6 1/8 minutes

Answers

Answer:

He jogs 4 9/10 kilometers in 6 1/8 minutes

Step-by-step explanation:

If you multiple 4/5 time 6 1/8 you'll get 4.9, which in fraction form is 4 9/10.

during the week. Jimmy spent $45 eating out, gain $55 mowing lawns and spent $15 on gas. What was Jimmy’s change in dollars at the end of the week?

Answers

Answer:

5

Step-by-step explanation:

Let's look at the question.

Spent- He spent 45 dollars eating out.

He spent an additional 15 dollars on gas

Earned- He earned 55 dollars from mowing lawns

Earned is going to be a positive value.

Spent is going to be a negative value.

The situations don't matter in the context of the question. They are just asking how much he got charged.

The amount charged is always positive. You can never have a negative charged amount of money. That would mean the bank owed you money, which would never happen.

Let's substitute the values into an equation.

The variable C will stand for amount charged.

C = -45 + 55 - 15

Combine the negative values to get -60

Add -60 to 55.

You will get -5, which then you will have to take the absolute value of.

The absolute value will be the charge in dollars at the end of the week.

Jimmy’s change in dollars at the end of the week will be - 5 dollars.

What is mean by Subtraction?

Subtraction in mathematics means that is taking something away from a group or number of objects. When you subtract, what is left in the group becomes less.

Given that;

Jimmy spent $45 eating out, gain $55 mowing lawns and spent $15 on gas.

Now,

Let the total amount Jimmy have = x

Since, Jimmy spent $45 eating out, gain $55 mowing lawns and spent $15 on gas.

Hence, After spent $45 on eating, we get;

The left amount = x - $45

And, After spent $55 on mowing lawns, we get;

The left amount = x - 45 + 55

                         = x + 10

And, After spent $15 on gas.

The left amount = x + 10 - 15

                         = x - 5

Thus, At the end of the week, he ended up with 5 dollars less than he started, so the change is -5 dollars.

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Simplify.

-4 (3-1) + 2 ​

Answers

Answer:

-6

Step-by-step explanation:

-4 x 2 = -8 + 2 = -6

Point N is on line segment \overline{MO} Given NO=2NO=2 and MN=17,MN=17, determine the length \overline{MO}.

MO

.

Answers

Answer:

MO = 19

Step-by-step explanation:

Here, we want to determine the length of MO

mathematically;

MO = MN + NO

MO = 17 + 2

MO = 19

The number of sides of two regular polygons are as 5:4 and the difference between their angles is 9°. Find the number of sides of the polygons,

Answers

Answer:

8 and 10.

Step-by-step explanation:

I am assuming the difference of 9° is between their interior angles.

The formula for the interior angle of a regular polygon is 180° - 360°/n, where n is the number of sides.

As the number of sides increase, the interior angle increases.

Therefore 180° - 360°/(5x) = 180° - 360°/(4x) + 9°.

180° - 360°/(5x) = 180° - 360°/(4x) + 9°

360°/(4x) = 360°/(5x) + 9°

90°/x = 72°/x + 9x°/x

=> 90° = 72° + 9x°

9x° = 18°

x = 2.

Hence the number of sides of the regular polygons are 8 and 10.

Find the sum. Simplify. Combine Like Terms.
Write you answer with no spaces. (N+8) + (n - 12)

Answers

Answer:

2N-4

Step-by-step explanation:

N+8+N-12

2N-4

Answer:

N^2+4n-96

Step-by-step explanation:

A dog has three puppies. Spot weighs 12 ounces. Rascal weighs 9.5 ounces. Socks weighs 10.2 ounces. What is the total weight of the litter? *

Answers

Answer:

31.7

Step-by-step explanation:

Since you want to find the entire weight, you need to add up all of the weights of the puppies.

12+9.5+10.2= 31.7

Yon buys tickets to a concert for himself and a friend. There is a tax of 8% on the price of the tickets and an additional booking fee of $20 for the transaction. Enter an algebraic expression to represent the price per person. Simplify the expression if possible. Use variable t for the price of the 2 tickets in dollars.

Answers

Answer:

The answer is 1.06x+10

Step-by-step explanation:

Well, I assume that both tickets cost the same: let's call it x.

So the tickets cost 106%x (the cost of the ticket plus tax).

The total prize of the tickets will be: 2*106% x+20.

But let's assume that you share it half-half then the answer would be 1.06x+10

What is the volume of a shoebox that is 35 cm long, 10 cm wide, and 10 cm high?

Answers

Answer:

3500 cm^3

Step-by-step explanation:

A shoebox is in the size of a cuboid

Volume of a cuboid = [tex]length\times width\times height[/tex]

[tex]l = 35\\w = 10\\h =10\\\\V =35\times 10\times 10 \\\\Volume =3500cm^3[/tex]

Answer: looks like they got rid of What’s your favorite anime.

Step-by-step explanation:

Which of the following is the solution to 113x>> -5?

Answers

Answer:

[tex]x>-\frac{5}{113}[/tex]

Step-by-step explanation:

[tex]113x>>-5\\\\\mathrm{Divide\:both\:sides\:by\:}113\\\frac{113x}{113}>\frac{-5}{113}\\\\Simplify\\\\x>-\frac{5}{113}[/tex]

Jose's school was closed due to the frigid weather. The high temperature for the play was 4 °F.and the low temperature for the day was
-9 °F.Write the compound inequality for the graph showing this daily temperature range.

Answers

Answer:

-36

Step-by-step explanation:

f×v= 13,573,692,509 if f stands for 5837 then what is v?

Answers

Answer:

              v = 2,325,457

Step-by-step explanation:

f×v= 13,573,692,509

5837×v= 13,573,692,509

v =  13,573,692,509÷5837

v = 2,325,457

[tex]{}\quad\, \underline{\qquad\quad2\ 3\ 2\ 5\ 4\ 5\ 7}\\{}\ \ \,1\ 3\ 5\ 7\ 3\ 6\ 9\ 2\ 5\ 0\ 9\ \div\ 5\ 8\ 3\ 7\\\underline{-1\ 1\ 6\ 7\ 4\ \ \ }\\{}\quad\ \ 1\ 8\ 9\ 9\ 6\\{}\quad\underline{-1\ 7\ 5\ 1\ 1\ \ }\\{}\qquad\ \, 1\ 4\ 8\ 5\ 9\\{}\quad\ \ \underline{-1\ 1\ 6\ 7\ 4\ \ }\\{}\qquad\quad \, 3\ 1\ 8\ 5\ 2\\{}\qquad \ \underline{-2\ 9\ 1\ 8\ 5\ \ }\\{}\qquad\qquad2\ 6\ 6\ 7\ 5\\{}\qquad\quad\, \underline{-2\ 3\ 3\ 4\ 8\ \ }[/tex]

           [tex]{}\quad3\ 3\ 2\ 7\ 0\\{}\,\underline{-2\ 9\ 1\ 8\ 5\ \ }\\{}\quad\ \ 4\ 0\ 8\ 5\ 9\\{}\ \ \,\underline{-4\ 0\ 8\ 5\ 9\,}\\{}\qquad\qquad\quad 0[/tex]

Since F * V = 13,573,692,509
And F = 5837
Therefore, 5837 * V = 13,573,692,509
V = 13,573,692,509 / 5837
V = 2,325,457

4∣3c+5∣=16c I know the answer is five but I don't know how to get there

Answers

Answer:

[tex]c = 5[/tex], explanation for how to get there

Step-by-step explanation:

If we have the equation [tex]4|3c+5| = 16c[/tex], we want to isolate c on one side and find it's value.

Let's first divide both sides by 4.

[tex]4|3c+5|\div4 = 16c\div4\\\\|3c + 5| = 4c[/tex]

Now let's solve for the absolute value. We know that:

[tex]3c + 5 = 4c[/tex]

or

[tex]3c + 5 = -4c[/tex]

Possibility 1:

[tex]3c + 5 = 4c[/tex]

Subtract 3c from both sides:

[tex]5 = c[/tex]

Possibility 2:

[tex]3c + 5 = -4c[/tex]

Add 4c to both sides:

[tex]7c + 5 = 0[/tex]

Subtract 5 from both sides:

[tex]7c = -5[/tex]

Divide both sides by 7:

[tex]c = \frac{-5}{7}[/tex]

Plugging both of these values into the equation, we can see that only 5 works.

Hope this helped!

Sara, Nick and June share some sweets in the ratio 5:5:3. Sara gets 18 more sweets than June. How many sweets does Nick get?

Answers

Answer:  45

Step-by-step explanation:

5 : 5 : 3 is simplified so it can be rewritten as  5x  :  5x  :  3x

                                                                            ↓        ↓      ↓

                                                                        Sara    Nick  June

Sara has 18 more than June --> 5x = 3x + 18

                                                    2x = 18

                                                      x = 9

In expanded form we have 5(9) : 5(9) : 3(9)

                                              45  :  45  :  27

                                               ↓        ↓      ↓

                                           Sara    Nick  June

Explain why a quadratic equation with a positive discriminant has two real solutions, a quadratic equation with a negative discriminant has no real solution, and a quadratic equation with a discriminant of zero has one real solution.

Answers

Answer:

A quadratic equation can be written as:

a*x^2 + b*x + c = 0.

where a, b and c are real numbers.

The solutions of this equation can be found by the equation:

[tex]x = \frac{-b +- \sqrt{b^2 - 4*a*c} }{2*a}[/tex]

Where the determinant is D = b^2 - 4*a*c.

Now, if D>0

we have the square root of a positive number, which will be equal to a real number.

√D = R

then the solutions are:

[tex]x = \frac{-b +- R }{2*a}[/tex]

Where each sign of R is a different solution for the equation.

If D< 0, we have the square root of a negative number, then we have a complex component:

√D = i*R

[tex]x = \frac{-b +- C*i }{2*a}[/tex]

We have two complex solutions.

If D = 0

√0 = 0

then:

[tex]x = \frac{-b +- 0}{2*a} = \frac{-b}{2a}[/tex]

We have only one real solution (or two equal solutions, depending on how you see it)

Answer:

B (–4, –12)

Step-by-step explanation:

If its even the right question

A store buys 10 sweaters for $80 and sells them for $370. How much profit does the
store make per sweater?

Answers

Answer:

$290

Step-by-step explanation:

370-80=290

$290

Answer:

29

Step-by-step explanation:

The length of a rectangle is 6 inches. The width is 3w inches. What is the expression for the perimeter of the rectangle?

Answers

Answer:

Perimeter = (6w + 12)inches

Step-by-step explanation:

The perimeter of a rectangle is:

p = 2(length+width)

p = 2(6 + 3w)

p = 2*6 + 2*3w

p = 12 +  6w

re f(x) = 2x-5 and g(x)= Žx + 5
inverses? Explain.

Answers

We are being asked the inverse of the function f(x) = 2x - 5. Now by definition of an inverse function, f(g(x)) = x. f(x) = 2x - 5, so the inverse would be in the following format:

[tex]=> \mathrm{f\left(g\left(x\right)\right)\:=\:2g\left(x\right)\:\:-\:5}\:[/tex]

[tex]=> \mathrm{2g(x) - 5 = x}\:[/tex]

[tex]=> \mathrm{2g(x) = x + 5}\:[/tex]

[tex]=> \mathrm{g(x) = x + 5 / 2}\:[/tex]

I don't understand the inverse function you gave, 'g(x)= Žx + 5' but if it is in other words 'g(x) = x + 5 / 2' then the two functions you gave are inverses.

what is an algebraic expression for 2+5p

Answers

Answer:

two plus 5 times p or two more than the product of 5 and p.

Step-by-step explanation:

Simplify the expression
3-(2x+5)

Answers

Answer:

-2x - 2

Step-by-step explanation:

Step 1: Write expression

3 - (2x + 5)

Step 2: Distribute negative

3 - 2x - 5

Step 3: Combine like terms

-2x - 2

What is an equation of the line that passes through the point (-7,-6) and is parallel to the line x - y =7

Answers

Answer:

x-y=7

y=x-7

m=1 #parallel slope will be the same with the line

y+7=1(x+6)

y+7=x+6

y=x-1

Step-by-step explanation:

formula; y-y1=m(x-x1)

Answer:

y=x+1

Step-by-step explanation:

A point lies on x-axis at a distance of 9 units from y-axis. What are its co-ordinates? What will be the co-ordinates of a point if it lies on y- axis at a distance of -9 units from x-axis?

Answers

Answer: x axis (9,0). Y axis (0, -9)

Step-by-step explanation:

how do I find the domain n range of this graph​

Answers

Domain = {-3, 2}

Range = All real numbers

We can represent the range in interval notation as [tex](-\infty, \infty)[/tex] which is basically saying [tex]-\infty < y < \infty[/tex]. The range is all real numbers due to the arrows meaning the graph extends up and down forever. So any y value is possible.

Notice with the domain we only have 2 valid x values -3 and 2. No other x values are allowed. Normally we use an interval of some kind to set up the domain, but we only have a set of values instead. The curly braces indicate "set".

Help anyone who knows mathematics

Answers

Answer:

All answers are in bold in the explanation below.

Step-by-step explanation:

1. $11.49/3 packages=$3.83 per package

2. 2550 gals/30 days=85 gals per day

3. 88 students/4 classes=22 students per class

4. 15.6°F/13 minutes=1.2°F per minute

5. 175 Cals/12 oz=14.58 Cals per oz

6. 258.5 mi/5.5 hrs=47 miles per hr

7. 549 vehicles/9 acres=61 vehicles per acre

8. $920/40 hrs=$23 per hr

9. 13 apples/2 pies=6.5 apples per pie

10. 114 parts/6 mins.=19 parts per min.  So, multiply that unit rate by 15 mins.: 19 parts/min. * 15 mins.=285 parts in 15 minutes

11. 8 jumbo muffins/1.5 teaspoons of powder=5.33 teaspoons of powder per muffin.  So, multiply that unit rate by 3 dozen jumbo muffins.  A dozen is 12 so 3 dozen 36 muffins.: 36 muffins*5.33 teaspoons=192 tsp for 36 muffins

12. about $75 per tire-reasoning: if you rounf $299 to $300 and divide by 4 tires you would get about $75 for the tires.

13. about $4.50 per yard of fabric-reasoning: first round $13.47 to $13.50.  Now, 13.50 is sort of in the middle between 12 and 15, which are both equally divisible by 3.  12/3=4 and 15/3=5.  The middle number between 4 and 5 is 4.5, so one yard of fabric will be about $4.50.

14a. Melendez: 1,560 watts/4 people=390 watts per person

       Barton:  2,130 watts/6 people=355 watts per person

       Stiles: 1,490 watts/2 people=745 watts per person

The Stiles family uses almost twice the amount of electricity per person than the other two families.  If you look at the calculations, you see that the other two families use within in about 350 to 400 watts of electricity per person, while this family uses about 750 watts per person.  350*2=700 and 400*2=800.  745 is a number almost in between both.

14b. Melendez: 3,500 gals/4 people=875 gals per person

       Barton: 6,400 gals/6 people=1,066.67 gals per person

       Stiles: 2,500 gals/2 people=1,250 gals per person

The Melendez family uses the least amount of water per person.  If you look at the calculations, this is the only family that uses less than 1,000 gallons of water per person, thus making them the family that uses the least amount of water per person.

I NEED HELP ASAP Follow the process for establishing a set of equations: Choose a variable to represent one of the unknowns. Express the remaining unknowns in terms of the variable you chose in step 1. Look for a relationship between the unknowns given in the problem. Write an equation. (Look for the other relationship given in the problem.) The tens digit of a number is twice the ones digit. The sum of the digits in the number is 12. What is the number? Include the entire process for establishing a set of equations, the solution, and an explanation of what the solution means in terms of the variables. Complete your work in the space provided.

Answers

Step-by-step explanation:

Identify the variables (x,y) and represent them using the unknowns like this:

Let x represent the tens digit and y represent the ones digit of the number.

Relationships between the unknowns from the question:

x = 2y, and x + y = 12.

We can solve these simultaneous equations by substitution:

x + y = 2y + y = 12, 3y = 12, y = 4. So x = 8.

Link back to the question:

Therefore, the number is 84.

NEED HELP FAST PLEASE

Answers

x = u /k + y/ k

Hope this helps

3x + 2y = 6 linear or non-linear ?

Answers

Answer:

Linear

Explanation:

All the variables are Degree One.
it would be linear because of the variable
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