In a Mathematics test,Alex got 80% of the question correct. He got 40 questions correct. Each question on the paper carried 3 marks. How many marks did he lose in that test ?​

Answers

Answer 1

Answer: 30 marks lost

Step-by-step explanation:  80% = 40 question so 100% = 50 questions

he missed 10 of 50 so

10 x 3 = 30 marks


Related Questions

Can someone explain their answer? ​

Answers

The answer is -36 because
13,6,-1,-8,-15,-22,-29,-36

Answer: -36

Step-by-step explanation:

13, 6, -1

to get from 13 to 6 and 6 to -1, you would subtract by 7 so keep subtracting by 7 until you get 8 different terms

13, 6, -1, -8, -15, -22, -29, -36

the eighth term would be -36

i hope that makes sense

Evaluate k = 13 helllp noww

Answers

Answer:

-13

Step-by-step explanation:

Find the difference in the given lengths of the polygons . (7x + 2) units (6x - 5) units .

Answers

Answer:

Difference in the lengths of the polygons is (x + 7) units.

Step-by-step explanation:

Lengths of the given polygon = (7x + 2) units and (6x - 5) units

Therefore, difference in the given lengths = (7x + 2) - (6x - 5)

                                                                      = (7x - 6x) + (2 + 5)

                                                                      = x + 7

Therefore, difference in the lengths of the polygons is (x + 7) units.



Please I need this quick !!!

Answers

Answer:

81

Step-by-step explanation:

First we go with exponents, 2x2=4 and 5x2=25. Now we go with what's inside the parentheses so, 4 (Originally 2x2) plus 4 plus 6, which equals 14. Now we multiply 4 and 14, which equals 56. Then we add 56 and 25 which equals 81.

Rasheed has an account balance of
-$125.56. Does Rasheed owe the bank more or less than $125?

Answers

Answer:

Yes, He Owes More

Step-by-step explanation:

he or she owes the bank more money because he is in the negative range, so that means whenever you're in the negative range have to pay someone something (which basically means debt)

____________________________________________________________

Hope this helps!

Please give brainlist!

Answer:

yes rasheed owes more the banck than 125

Step-by-step explanation:

raseed owe the bank 125.56. wich is .56 more than 125

Solve the system of equations
-12x+9y=7
3x+4y=2
Show all workings please

Answers

Answer:

x = -2/15 & y = 3/5

Step-by-step explanation:

- 12x + 9y = 7 ...(1) ; 3x + 4y = 2 ...(2)

Multiply both sides of (2) by 4:

12x + 16y = 8

Add the new equation & (1):

12x + 16y = 8

-12x + 9y = 7

0 + 25y = 15 => y = 15/25 = 3/5

Thus, substitute the value of y in (2):

3x + 4y = 2 => 3x = 2 - 4(3/5) = (10-12)/5

=> 3x = -2/5

=> x = - 2/15

Answer:

[tex]x=-\frac{2}{15}=-0.133333333\\y = \frac{3}{5}= 0.6[/tex]

Step-by-step explanation:

−12x+9y=7

3x+4y=2

​In order to solve by elimination, coefficients of one of the variables must be the same in both equations so that the variable will cancel out when one equation is subtracted from the other.

−12x+9y=7,3x+4y=2

To make −12x and 3x equal, multiply all terms on each side of the first equation by 3 and all terms on each side of the second by −12.

3(−12)x+3×9y=3×7,−12×3x−12×4y=−12×2

Simplify.

−36x+27y=21,−36x−48y=−24

Subtract −36x−48y=−24 from −36x+27y=21 by subtracting like terms on each side of the equal sign.

−36x+36x+27y+48y=21+24

Add −36x to 36x. Terms −36x and 36x cancel out, leaving an equation with only one variable that can be solved.

27y+48y=21+24

Add 27y to 48y.

75y=21+24

Add 21 to 24.

75y=45

Divide both sides by 75.

y=3/5

Substitute 3/5 for y in 3x+4y=2. Because the resulting equation contains only one variable, you can solve for x directly.

3x+4×(3/5)=2

Multiply 4 times 3/5

3x+12/5=2

Subtract 12/5 from both sides of the equation.

3x=-2/5

Divide both sides by 3.

x=-2/15

The system is now solved.

x=−2/15 ,y=3/5

 

What is the range of y = –3sin(x) – 2?

Answers

Answer:

thase is the answer and good luck

Three horses equally share 16 and 1/5 pounds of hay. How many pounds of hay does each horse receive? answer asap plssss

Answers

Answer:

They each receive 5.40 pounds of hay

Step-by-step explanation:

16 1/5 ÷3 = 5.40 I checked it by multiplying 5.40×3 and I got the same answer so it should be correct!

The height of a javelin after it has left the hand of the thrower can be
modeled by the function h = 3(4-2)(-+ + 4), where h is the height of the
javelin and t is the time in seconds. How long is the javelin in the air?

Answers

Answer:

-24

Step-by-step explanation:

Solo You just need Make an ecuation

Find the area of the composite shape shown below:
5 in
4 in
2 in
3 in
12 in2
20 in2
22 in2
16 in 2

Answers

Answer:

16 inches squared

Step-by-step explanation:

We can split the figure into two rectangles. Rectangle 1 will have an area of 2*3=6. Rectangle 2 will have an area of 2*5=10

10+6=16

HOPE THIS HELPS!!!!!!!!

If 1/2 gallon of paint covers 1/12 of a wall, then how many quarts of paint are needed for the
entire wall?

Answers

Answer:

24

Explanation:

½ gallons × 12 = 6 (gallons of paint needed to cover the whole wall)

6 gallons = 24 quarts

i hope this helps! :D

Timed please help!

What is the measure of GHK?

Answers

Answer:

GHK = 28

Step-by-step explanation:

Angle GHK and angle JHI are vertical angles

Vertical angles are congruent so

Because angle JHI = 28 then angle GHK also equals 28

Answer:

The GHK is 28

Step-by-step explanation:

50 POINTS!! Use rules of transformations to answer each of the items below. Be sure to answer in complete sentences, and when necessary, include your calculations.

Create your own set of coordinates for and graph it on a coordinate plane. Label each of the triangle's vertices.
Write a scenario involving the dilation of onto its image. In the scenario, include the scale factor between the similar triangles and the coordinates for the image. Graph the image on the same coordinate plane as its pre-image.
Use the distance formula or Pythagorean Theorem to prove mathematically that is similar to its image. Include all necessary calculations.

Answers

Answer:dvd

Step-by-step explanation:ube

Answer:

hmmm

Step-by-step explanation:

Is Kee
Keelin wants to find the value of t in the equation
}(150 – 30) = 50. Her work is shown below.
Solve: ž (15t – 30) = 50
Choosed
Step 1: 5t -
10 = 50
The equa
Step 2: 5t = 60
Step 3: t = 12
To determ
To find the
Choose

Answers

I think is -15 but I have no idea don’t trust me tho

Pls if you can answer it :)

Answers

2(3(17))-8
3x17 = 51
2(51)-8
51 x 2
102-8=94

What is the expression of (5)(x+3)(y+2)

Answers

Answer:

The expression of (5)(x+3)(y+3) is a binomial

HELP ILL MARK AS BRAINLIEST what’s the volume?

Answers

Answer:

I think 324. Please tell me if wrong. I will try again.

Step-by-step explanation:

9*12*6=648

648/2=324

help I’m doing a test.... what is 3(2x-9) =

Answers

Answer:

6x - 27

Step-by-step explanation:

3 x 2x - 3 x 9 =

6x - 27

Hope that helps!

Answer:

6x - 27

Step-by-step explanation:

Find the measure of angle m

Answers

180° - (60° + 84°) = 180° - 144° = 26°

can you help me find the slope of these queastions?

Answers

Answer:

1. B

2. A

3. I

4. I

These should be correct

Help!!!!!!!!!!! Me now!!!!!!!!!!

Answers

Answer:

29.6 - 0.2 = 29.4

29.4 divided by 24 = 1.225 km

Answer:

1.225

Step-by-step explanation:

29.6-0.2=29.4

24/29.4=1.225

Pls help me ASAP the plot is on the top I need help with question 16. In class 1 now many students scored 75 or higher. There are 28 students in class one

Answers

Answer:

hey

Step-by-step explanation:

FIND THE VALUE OF X AND Y PLEASE ILL GIVE YOU BRAINLEST

Answers

Answer:

x = 10

y = 50

Step-by-step explanation:

9x - 70 = x + 10

8x - 70 = 10

8x = 80

x = 10

3y - 60 = 90

3y = 150

y = 50

The answer is:

x- 10

y- 50

The percent of decrease from 69 songs to 37 songs?

Answers

Answer:

46.3768%

Step-by-step explanation:

Or 46.38% if you round it to the nearest tenths

The percentage decrease of songs from 69 to 37 songs is 46.4%.

What is the percentage?

A percentage is a value per hundredth. Percentages can be converted into decimals and fractions by dividing the percentage value by a hundred.

Given, The number of songs decreased from 69 songs to 37 songs.

Therefore, The net amount of songs that decreased is,

= (69 - 37).

= 32 songs.

Now to obtain percentage change we'll divide the net amount change by the original amount and multiply it by 100% which is,

= (32/69)×100.

= 46.4%

learn more about percentages here :

https://brainly.com/question/24159063'

#SPJ2

HELP PLEASE!!!! No files btw
Jubal wrote the four equations below. He examined them, without solving them, to determine which equation has no solution.


7 x + 1 = 7 x+ 1. 3 x + 2 = 3 x minus 2. 4 x + 1 = 3 x + 8. negative 2 x minus 1 = negative 2 x minus 1.


Which of Jubal’s equations has no solution?

A. 7 x + 1 = 7 x+ 1

B. 3 x + 2 = 3 x minus 2

C. 4 x + 1 = 3 x + 8

D. negative 2 x minus 1 = negative 2 x minus 1

Answers

The answer is B! :)

Best answer gets brainliest help!!

Answers

Answer:

option A

Step-by-step explanation:

the answer is a because it says triangle PGR and DEF are similar. The congruent sides are in order so side PG is equal to DE or 4/6

have a great day :D

It's A).
Because they are similar triangle so their proportion are equal

Please help me with this equation! First person to answer correctly will get Brainliest!!!​

Answers

Answer:

1. 4 and 3/5

2. 3 and 1/6

Step-by-step explanation:

thats about it

Answer:

1. 4 3/5 or 4.6   2.  3 1/6

Step-by-step explanation:

A model car has a length of 10cm. The scale of the model is 1:40. Find the real length of the car

Answers

Answer: 400 cm

Step-by-step explanation:

create a ratio

1 is to 40 as 10 is to x

1/40 = 10/x

multiply both sides by 40 and divide by x

x = 400

i need help finding the y-intercept

Answers

Answer: (0, -7)

Step-by-step explanation:

y = mx + b

Where m is slope and b is y-intercept

y = 2x + b

One point that passes through the line is (5,3), which means that x = 5 and y = 3

3 = 2(5) + b

3 = 10 + b

b = -7

(0, -7) is the y-intercept

Using this info you can find the equation of the line

:)

The intercept of the line is 2

Can someone please help!!!!
DO NOT ANSWER IF YOU DON'T KNOW IT PLEASE!!!

Answers

C Complementary Angles
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