A test has 20 questions. The test awards 3 points if the answer is correct and takes away 1 point if the answer is incorrect. A student answered 5 questions incorrectly. How many points did the student lose?

Answers:
A. 15 Points.
B. -15 Points.
C. -5 Points.
D. 8 Points.

Answers

Answer 1

Answer:

C. -5

Step-by-step explanation:

20 x 3 = 60

5 x 1 = 5

60 - 5 = 55


Related Questions

The parallelogram has the angle measures shown. Can you conclude that it is a rhombus, a
rectangle, or a square? Explain.

Answers

Answer:

Rhombus

Step-by-step explanation:

The angles add up to 144 degrees, so they can't be a rectangle or a square. Also, diagonals of rhombuses bisect the angles.

On a coordinate grid, point P is at (4, 3) and point R is at (−2, −5). Points Q and S are a reflection of both points across the x-axis. What are the coordinates of Q and S?

Q(−4, 3), S(2, −5)
Q(4, −3), S(−2, 5)
Q(−4, −3), S(2, 5)
Q(−4, 3), S(−2, 5)

Answers

The second option would be correct!

Answer:

The answer would be B!

Step-by-step explanation:

Can someone help me solve this problem? I’m not sure how to solve this type of expression

Answers

Answer:

(2x+3)square+2

Step-by-step explanation:

(2x) square +2 (2x)(3)+(3)square

2x square +12x+9

I think so.

pls give me brainliest

10)
4x-9
X + 18
Solve for x

Answers

Answer:

x = 9

Step-by-step explanation:

The alternate interior angles theorem tells us that these two quantities must be the same.

Therefore,

x + 18 = 4x - 9

x + 18 + 9 = 4x

x + 27 = 4x

27 = 4x - x

27 = 3x

x = 9

---

Hey, hope this helped! If you want to say thank you, click the "Thanks" button and select the answer "The Brainliest!" - I appreciate it!

Jane wrote all the natural numbers from 1 to 12. including 1 and 12.

how many numbers did Jane write?

Answers

Answer:

12 numbers

Step-by-step explanation:

1,2,3,4,5,6,7,8,9,10,11,12

solve for x: 3x-10 = 2(x+6)

Answers

Answer:

x = 22

Step-by-step explanation:

at what rate of simple interest will ₹4400 amount to ₹5610 in 5 years 6 months​

Answers

Answer:

0.05 or 5%

Step-by-step explanation:

The formula for simple interest is as follows:

A = P(1+rt), with A representing the final amount, P representing the initial amount, r being the rate, and t being time. Plugging our values in, we have

5610 = 4400(1+5.5r). We know that 5 years and 6 months is 5.5 because 6 months = 0.5 years

5610 = 4400(1+5.5r)

expand

5610 = 4400 + 24200r

subtract 4400 from both sides to isolate the variable and its coefficient

1210 = 24200r

divide both sides by 24200 to isolate the variable

r = 0.05 or 5% as 0.05 * 100 = 5

Determine all the zeros of the function y = 3x^2 - 2x - 2

Answers

Answer:

A

Step-by-step explanation:

Please help I’ll mark brainliest!!!

Answers

Answer:

B

Step-by-step explanation:

As x gets bigger or smaller, y approaches negative infinity

A tank contained 35 liters of water. After some water was poured out, it was 2/5 filled. How much water was poured out from the tank?​

Answers

Answer:

21litres

Step-by-step explanation:

2/5 of 35litres of water was left in the tank

2/5 × 35 = 14litres

14litres remained

Amount of water poured out= 35-14

= 21litres

Given a ball with a diameter of 38 inches, how much fabric would be needed to cover the surface?

Answers

Answer:

[tex]27436\pi[/tex] square inches

Step-by-step explanation:

Since we are covering the surface of the ball, we need to determine the ball's surface area.

Assuming the ball to be a sphere, its surface area would be [tex]A=4\pi r^2[/tex] where [tex]r[/tex] is the radius.

Since the diameter is twice the radius, then the radius of the ball is 19 inches.

Therefore, the surface area of the ball is [tex]A=4\pi (19)^3=4\pi(6859)=27436\pi[/tex] square inches.

what kind of wave is shown

Answers

Answer:

longitudinal

Step-by-step explanation:

help me please asap
i will make you brainliest

Answers

Answer:

see explanation

Step-by-step explanation:

An open circle indicates that x cannot equal that value

A closed circle indicates that x can equal that value.

(i)

An open circle at x = - 1 and arrow pointing right

x > - 1

(ii)

An open circle at x = - 1.5 and arrow pointing right

x > - 1.5

(iii)

A closed circle at x = 4 and arrow pointing left

x ≤ 4

(iv)

A closed circle at 0.5 and arrow pointing left

x ≤ 0.5

Acar moves at a constant speed of 50 miles per hour. How long
does it take the car to go 200 miles?
O 250 hours
150 hours
O 4 hours
O 10,000 hours

Answers

Answer:

4 hours · Speed = 50 mph · distance = time x speed · Time = 200 / 50 = 4 hours.

Step-by-step explanation:

Please help what is the answer its a math question find the lcd!!!

Answers

Step-by-step explanation:

sorry I don't now but when I now I will tell you ok but mybe it 12×12×12

For any two numbers a and b, the product of a − b times itself is equal to a^2 − 2ab + b^2. Does this familiar algebraic result hold for dot products of a vector u − v with itself? In other words, is it true that (u − v) • (u − v) = u • u − 2u • v + v • v? Justify your conclusion, trying not to express vectors u and v in component form.

Answers

Answer:

  yes; the distributive property applies to dot products

Step-by-step explanation:

The product of (a-b) with itself is ...

  (a -b)·(a -b) = a² -2ab +b²

because the commutative and distributive properties apply to multiplication.

  (a -b)·(a -b) = a(a -b) -b(a -b) = a² -ab -ba +b² = a² -ab -ab +b² = a² -2ab +b²

__

The same expansion works for the dot product operation, because the commutative and distributive properties hold for that operation, as well.

  (u −v)•(u −v) = u•(u -v) -v•(u -v) = u•u -u•v -v•u +v•v

  = u•u -u•v -u•v +v•v = u•u -(u+u)•v +v•v = u•u -2u•v +v•v

_____

Additional comment

The proof of any of the properties of the dot product relies on expressing the vectors in component form. The distributive property is no exception.

can sommeone help solve equation

Answers

Step-by-step explanation:

3x + 10 < 3

3x + 7 < 0

3x < -7

x < -7/3 = -2.3333...

or

2x - 5 >= 5

2x >= 10

x >= 5

x < -7/3 or x >= 5

Where did this student make the mistake when solving this inequality?

2x + 4 > 5x - 5

-2x -2x

4 < 3x - 5

+5 +5

9 < 3x

/3 /3 (divide by 3)

3 < x

options:

When subtracting the same value from both sides you don't need to switch the inequality sign


There is no mistake, it was solved correctly


You don't subtract 2x from each side, you add 2x to each side


When dividing by 3 you should switch the inequality sign

Answers

Answer:

You don't subtract 2x from each side, you add 2x to each side

If A = 2x – y + 3xy, B = x + 2xy and C = 3y + xy, find the value of A + B + C

Answers

[tex]A+B+C\\\\=(2x-y+3xy)+(x+2xy) +(3y+xy)\\\\=3x+2y+6xy[/tex]

The value of the expression A + B + C is equal to 3x - 2y + 4xy.

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, Are three expressions A = 2x - y + 3xy, B = x + 2xy and C = 3y + xy.

Now, A + B + C is equal to the sum of their values which is,

= (2x - y + 3xy) + (x + 2xy) + (3y + xy).

Now, we'll combine the like terms,

= 2x + x - y + 3y + 3xy + xy.

= 3x - 2y + 4xy.

So, The value of the expression A + B + C is equal to 3x - 2y + 4xy.

learn more about numerical expressions here :

https://brainly.com/question/29199574

#SPJ6

Find the equation of the line shown.
у
10
9
8
7
6
5
4
3
2
N
O
Х
1 2 3 4 5 6 7 8 9 10

Answers

Y=2x Could I have brainliest this helps ?

The equation of the line shown is y = 4 x

What is a straight line?

A straight line is the shortest distance between two points. the equation of straight line is represented as [tex]y = mx + c[/tex]

m is the gradient

y2, y1, x2, x1 are gotten from the graph

[tex]m = \frac{y_{2} - y_{1} }{x_{2} - x_{1} }[/tex]

[tex]m = \frac{8 - 4}{2 - 1}[/tex]

[tex]m = \frac{4}{1}[/tex]

m = 4

c is the intercept on x-axis

from the graph c = 0

substituting the values give:

y = 4 x

read more on equation of straight line here: https://brainly.com/question/14323743

please help brainliest


Solve. −7/8=−1/6−3/10x Enter your answer as a mixed number in simplest form in the box. x =

Answers

Answer:

X=[tex]\frac{36}{85}[/tex]

Step-by-step explanation:

-[tex]-\frac{7}{8}=-\frac{1}{6}-\frac{3}{10x}[/tex]

move the contants to the right hand side

[tex]-\frac{3}{10x}=-\frac{1}{6}+\frac{7}{8}[/tex]

Add the to terms on the right

[tex]-\frac{3}{10x}=\frac{17}{24}[/tex]

Cross multiply

72=170x

Swap sides of the equation

170x=72

Divide by 170 to both sides

x=[tex]\frac{36}{85}[/tex]

This is the simplest form.

The solution of the linear equation −7/8 = −1/6 − (3/10)x in the form of a mixed fraction number will be 2 ¹³/₃₆.

What is the solution to the equation?

The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.

The definition of simplicity is making something simpler to achieve or grasp while also making it a little less difficult.

The linear equation is given below.

−7/8 = −1/6 − (3/10)x

Simplify the equation, then we have

−7/8 = −1/6 − (3/10)x

(3/10)x = −1/6 + 7/8

(3/10)x = 17/24

x = 85/36

x = 2 ¹³/₃₆

The arrangement of the direct condition −7/8 = −1/6 − (3/10)x as a blended part number will be 2 ¹³/₃₆.

More about the solution of the equation link is given below.

https://brainly.com/question/545403

#SPJ2

Why do we not use a Leg-Leg (LL) Theorem that says if you know that the legs of two right triangles are congruent, then the triangles are congruent?
A. This information is not sufficient to prove triangles congruent.
B. This case is already covered by the HL Theorem.
C. This case is already covered by the SSS Postulate.
D. This case is already covered by the SAS Postulate.

Answers

It’s c I think but correct me if I’m wrong

This weekend, Jerome earned $252.50 in all. What was the dollar amount of the meals that Jerome served?

Answers

Answer:

Is that the full question? I can't solve this unless I have the full question. I don't know how many different meals she sold.

2. A new pump is used to empty the pool in Exercise 1. The equation
W= -275(2t - 7) represents the gallons of water w that remain in
the pool t hours after pumping starts.
a. How many gallons of water are pumped out each hour?
b. How much water is in the pool at the start of pumping?
c. Suppose there are 1,000 gallons of water left in the pool. How long
has the pump been running?
d. After how many hours will the pool be empty?
e. Write an equation that is equivalent to w= -275(2t - 7). What
information does it tell you about the situation?

Answers

Answer:

a.  550 gallons/hr.

b.  1925 gallons

c.  1.268 hours

d.  3.5 hours

Step-by-step explanation:

W = -275(2t-7), where t is hours since pumping starts.  Let's rewrite this in standard line format of y = mx + b, where m is the slope and b the y-intercept (the value of y when x = 0).    In this case we'll use W and t instead of x and y.

W = -275(2t-7)

W = -550t + 1925

The 1925 figure represents the water volume when t = 0, the initial volume.  The slope of -550 is the rate at which water is being pumped out.  550 gallons/hr.

We can solve the equation for the hours required to make w=0:

W = -550t + 1925

0 =  -550t + 1925

550t = 1925

t = 3.5 hours

-

We can solve for when W = 1,000:

W = -550t + 1925

1000 = -550t + 1925

-925 = -550t

t = 1.682 hours

a.  550 gallons/hr.

b.  1925 gallons

c.  1.268 hours

d.  3.5 hours

We can also graph the function. attached.

 

PLs help me 15 points on total

Answers

Answer:

i think its C

Step-by-step explanation:

Write a system of equations to describe the situation below, solve using elimination, and fill in
the blanks.
The manager at a community pool is looking over receipts. On a certain Monday, the pool had
16 children and 42 adults, which brought in $142. That same week on Tuesday, 24 children
and 26 adults came to the pool, which brought in $102. What are the admission prices for
children and adults?

Answers

Answer:  Child is $1 and Adult is $3, per person.

Step-by-step explanation:

We have two unknowns, so we need at least two equations.  Let C and A stand for the price of a ticket for a child and an adult, respectively.

The income for Monday and Tuesday can be calculated:

Monday:   16C + 42A = $142

Tuesday:  24C + 26A = $102

Rearrange the second equation to isolate one of the variables.  I'll pick C:

24C + 26A = $102

C  = ($102 - 26A)/24

Now use this expression for C in the first equation

16C + 42A = $142

16(($102 - 26A)/24) + 42A = $142

16(($102 - 26A)/24) + 42A = $142

(1632 - 416A)/24 + 42A = $142

(68 - 17.3333A + 42A = $142

24.6667A = 74

A = 3  [The price of an adult pool admission is $3]

Use this value in either equation to find the price of a child's admission:

24C + 26A = $102

24C + 26*($3) = $102

24C = 102 - 78

C = $1   [The price of a child's admission to the pool is $1]

Check to see if these prices satisfy both equations:

Monday:   16C + 42A = $142

Tuesday:  24C + 26A = $102

---

Monday:   16*(1) + 42*(3)  = $142   ?   YES

Tuesday:  24*(1) + 26*(3) = $102   ?    YES

Child is $1 and Adult is $3, per person.

For the holidays, Antonio is driving to visit his grandparents who live 441 miles away. Antonio's car gets 31.5 miles per gallon of gas when he is driving on the highway. In order to budget for his trip, Antonio wants to know how much gas he will need.
Use an equation to find how much gas Antonio needs for the drive.
Antonio needs
gallons of gas.


Answers

Answer:

12

Step-by-step explanation:

What is the greatest multiple of 99 that is less than 0?

Answers

Answer: -99

Step-by-step explanation:

This is a tricky question because we are dealing with negative numbers. In this case, the numbers that are closer to 0 are the greater numbers. So, the greatest multiple of 99 that is less than 0 would be -99.

When is new years????????????

Answers

Answer:

21 day

Step-by-step explanation:

EASY MArk as brainliest

Answer:

January 1 is new years day! can I get branliest:>

What is 16.281 rounded to the nearest whole number
and What is 16.281 rounded to the nearest tenth?

Answers

Answer:

16, and 16.3

Step-by-step explanation:

Answer:

1. 16     2.16.3

Step-by-step explanation:

2.16.281 is 16.28 which is near 16.3 so you round. Also anything above 5 you round and anything below 5 you round down.

Other Questions
Please help me with this math problem!! NO LINKS PLEASE!! DUE TONIGHT AT 11:59PM!! THANKS!! :) When a cell needs to get rid of waste products and push them out of the cell. Since the sanctuary was established, the estimated population of American robins in the area has increased from 86 to 102.Describe the percent change in the estimated population of American robins. Round to the nearest whole percent.Enter your answer in the box to complete the sentence. Rhombus FGHI with vertices F(6, -1), G(11, -3), H(13, -8), and I(8, -6) is dilated using scale factor = 2, centered at (12, -1) Write the correct form of the verb to complete the sentence.We (deliver) _________________ your order early next week. A student places a set of books with a force of 25 n on a lab table with a force of 150 n. What is the normal force pushing upward on the legs of the table?. What is the value of the expression below when z= 5?5z - 4 A scientist makes the argument that she has found DNA evidence that shows that evolution does not exist. Whatwould her evidence have to show for her to be correct?Strong genetic similarities in closely related organisms and weak genetic similarities in distantly relatedorganismsWeak genetic similarities in closely related organisms and strong genetic similarities in distantly relatedorganisms.Strong physical similarities among closely related organisms and also among distantly related organisms.o Weak physical similarities among closely related organisms and also among distantly related organisms. Determine the intercepts of the line. Calculate the speed of light in a medium whose refractive index is 2.4 why is there tension between carter druse and his father in 'A Horseman in the Sky? 2. A company makes parts for a machine. The lengths of the parts must be within certain limits or they will be rejected. A large number of parts were measured and the mean and standard deviation were calculated as 3.1 m and 0.005 m respectively. Assuming this data is normally distributed and 99.7% of the parts were accepted, what are the limits? HELP!? What strategies help prevent cancer? Select all that apply.Question 8 options:using sunscreenavoiding tobaccogetting enough sleepeating a healthy diet Hassan made a vegetable salad with 2 3/8 pounds of tomatoes, 1 1/4 pounds of asparagus, and 2 7/8 pounds of potatoes. How many pounds of vegetables did he use altogether?Btw please show work. When I had laid it on the floorI went to blow the fire a-flame,But something rustled on the floor,And someone called me by my name:It had become a glimmering girlWith apple blossom in her hairWho called me by my name and ranAnd faded through the brightening air.The Song of Wandering Aengus,William Butler YeatsHow should a reader change tone to match the change of events between the first half of the stanza and the second half? Answer by completing the sentence.The reader's voice should change from a descriptive tone to one that sounds. Please, where can i find the 2020 auditors report for ExxonMobil URGENT PLS HELP!! ME I NEED HELP!!!! 3* what =1 because I'm genuinely unsure The PTA was doing a fundraiser and bought 500 megaphones to sell for a pep rally. The profit, p, from the sale of megaphones can be represented by p(m) = 3.5m-875. Which inequalities represents the constraints of the range? A. m>= - 875 B. 0 The Medical Device Makers Association does not include all manufacturers of medical and surgical instruments. The association refuses to deal with any parties who do not carry the products of its members. This is Group of answer choices a situation that neither restrains trade nor harms competition. subject to analysis under the rule of reason. not within the scope of the Sherman Act. a per se violation of antitrust law.