Mathematics High School

Martin correctly answered 90% of the questions on a math test that contained exactly 40 questions. How many of the questions did he answer incorrectly? explain

A) 4
B) 10
C) 44
D) 90

Answers

Answer 1

Answer:

A. 4

Step-by-step explanation:

90% of 40 is = 36

40 - 36 = 4

Since he got 36 right out of 40, he got 4 wrong.

Related Questions

' the length of one side of an equilateral is 3x+2. its perimeter is 60 centimeters. write an equation that could be used to find the value of x. solve for x and then find the length of the side. ''
I need to find the equation and the side length :')
also please answer this quickly hhhhhhhhhhhhh

Answers

Answer:

Step-by-step explanation:

Triangle equilateral has 3 sides

3(3x+2) = 60

9x+6 =60

9x= 54

x=9

3x9 +2 = 20  One side = 20

20x3=60   3 sides = 60

Answer:

60

Step-by-step explanation: this is simple because it is lou

Factor completely: 125 x cubed space plus space 343

Answers

Answer:

(5x+7)(25x^2-35x+49)

Step-by-step explanation:

Not really an explanation for factoring, but I'm sure it's right.

if triangle GHI is equilateral and JHK is isosceles, what is the measure of JHK

Answers

Answer:

The measure of JHK is 25 degrees

Step-by-step explanation:

If GHI is equilateral, it means each of the angles are equal to 60 degrees

Thus;

7x - 31 = 60

7x = 60 + 31

7x = 91

x = 91/7

x = 13 degrees

The measure of JHK IS x + 12

simply insert the value of x here

Angle JHK = 13 + 12

Angle JHK is 25 degrees

Answer: 25

Step-by-step explanation:

35x-12= -34x+710 answer fast too

Answers

Answer:

x=722/69

Step-by-step explanation:

Pls help I’m doing a test
Subtract.
(22 + 43x + 10) - (-102² – 5x+10)
Answers
A. -92? + 38x + 20
B. 11x2 + 38%
C. 11x2 + 483
D. -922 + 487

Answers


(22 + 43x + 10) - (-102² – 5x+10)
Answers
A. -92? + 38x + 20
B. 11x2 + 38%
C. 11x2 + 483
D. -922 + 487

Your answer would be D
Can you please give me brainliest

ASAP When 4(0.5x+2.5y-0.7x-1.3y+4) is simplified, what is the resulting expression?

A) -0.8x+4.8y+16

B) 0.8x-4.8y+16

C) -0.8x-4.8y+4

D) 0.8x+4.8y+4

Answers

Answer:

The answer is A.

Step-by-step explanation:

4(0.5x+2.5y-0.7x-1.3y+4)

2x+10y+-2.8x+-5.2y+16

2x-2.8x+10y-5.2y+16

= -0.8x+4.8y+16

The answer to your question is A

first to answer correctly gets brainleist! (bringing out a lot of questions so yea!)

Answers

Answer:

C.

Step-by-step explanation:

The easiest way to tell if a relation is a function is to look at the values of the x's. If more than one x is the same, it cannot be a function. In contrast, if more than one y is the same, it is okay. The answers A, B, and D are functions because the x's are all different. Looking at the table for the answer C, you can see that two x's are the same (there are two x's with the value of 1).

Hope this helps!! Have a wonderful day :D

Help me pls I’m failing math I need a good grade on this

Answers

i believe as a decimal it is 2.4 :)

Answer:

2  2 /5 =  2.4  =  240 %

Step-by-step explanation:

The number 1 is the same as 1.00 and is the same as 100%.

The number 2, therefore, is the same as 2.00 and the same as 200%

2 /5  can be converted into a decimal by seeing that  2 /5 = 4 /10 .  4 /10 , spoken out loud, is "four tenths" and shows that the decimal is  

0.4 . And  0.4  is the same as 40%.  Which means that  2  2 /5 = 2.4= 240 %

Mrs. Chin paid a 20% tip on the bill for lunch if the tip amount was $2.75 what was the bill for lunch before the tip was added

Answers

Answer:

$13.75

Step-by-step explanation:

the bill before the tip is x.

0.20x = 2.75

now divide both sides by .20

x= 2.75/0.20

x=13.75

13.75:))))))))))))))))))))

If x=5 and the area of the rectangle is 30 what is the other length of the rectangle?

Answers

Answer:

The other length would be 6.

Step-by-step explanation:

Rectangle area is l times height. So x is either the length for height. So we have 5 times x = 30. To find the other length we have to take 30/5 which equals 6

HELP ASAP PLEASE !!!><
WILL GIVE BRAINLIEST ❤️


Find the slope of the line passing through the given points using the slope formula. Describe the slope as
positive, negative, zero, or undefined.
(-5, -18) and (-5, -3)

Answers

the slope is 15/0 so your line would be zero

Answer:

Your slope would be undefined

-[tex]\frac{-3-(-18)}{-5-(-5\\} \\[/tex]

the -5-(-5) is cancelling it's self out

And i believe M=0.75 take this with a bit of salt  

ILL MARK BRAINLIEST IF FAST
Select the correct answer.
Which table represents a linear function that has a greater unit rate than that of the function y = 200x + 50?

Answers

Answer:

D

Step-by-step explanation:

A unit rate is basically which one increases more as time goes on. Now. to make it easier let me explain visual.

You have 50 apples at the start and every hour you get 200 more apples, sweet!

Now let's look at the chart.

The first one is 200x+100, this is wrong since this has a better start but you don't get as much apples.

Same goes for the B and C. The only one that would make sense is D since you're also adding 10 more apples for each one you increase.

help me plzzzz and fast ​

Answers

Answer:

A D

Step-by-step explanation:

Since it is a one time fee of 55$, that will be our y intercept.

That allows A and D and F possible answers.

It says 10$ per puzzle and they spent 1245$

So A and D are answers.

Please help me i will give brainlist please...

Answers

Answer: All i know is you have to multiply all of those numbers because its area

Step-by-step explanation:

two common multiples of 4 and 8 are​

Answers

Answer:

8, 16

Step-by-step explanation:

what are the x and y intercepts of the function f(x)=x/x^2-3x​

Answers

Answer:x and x2

Step-by-step explanation:

The cheerleaders at City High make their own
megaphones by cutting off the small end of a
cone made from heavy paper. If the small end of
the megaphone is to have a radius of 2.5 cm,
what should be the height of the cone that is cut
off?
2.5 cm
60 cm​

Answers

Answer:

The height of the cone that is cut would be 2.5

Please answer correctly !!!!!!!!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!

Answers

Answer: P=4


SBSE: Remember, that whole line is 180 degrees, and the right angle would be 90 degrees.

If there are one variable, then there is only one equation.

The equation would be 54+90+8p+4=180

Let’s solve that!

54+90+4 is 148.

Then move that back to the main equation: 148+8p=180

8p=180-148
8p=32
p=32/8
p=4

p would be 4!

You are saving for a bike and can save $10 per week. You have $25 when you begin saving. Write an explicit equation
to represent the amount of money you have saved at any given week.

Answers

Answer:

your pretty whatsbyour name

Answer:

Amount of money saved  25 35 45 55 65 75 85

Step-by-step explanation:

Explanation:  On week 1 you have the $25 you already saved plus the $10 for that week, so $35.  

For every week after that add $10 to the money saved for the additional $10 saved that week.

On the 8th week the total amount of money saved is 95+10, or $105.

PLEASE HELP WILL GIVE BRAINLIEST

Answers

Answer:

is it [tex]-2t^{2}[/tex] or [tex]2t^{2}[/tex]?

A train leaves LA at 2:00 pm and heads north at 50 mph. If the next train leaves the station three hours later and heads north at 60 mph, at what time will the second train catch up to the first train?

Answers

Answer:

https://brainly.com/question/6423861

Step-by-step explanation:

Use link and give me 5 stars and brainliest

Calculate 8/9-2/3 giving your answer in its simplest form.

Answers

Answer:

(8/9) - (2/3) = (8-6)/9 = 2/9 = 0.22

See attachment for math work and answer.

steve saw 313 birds during a bird-watching trip to Yellowstone National park. he observes 15 more trumpeter swans than sandhill cranes. he saw twice as many mountain chickadees as ducky grouses. how many birds of each type did steve observe if he saw half as many trumpeter swans as ducky grouses

NEED ASAP!

Answers

Answer:

Step-by-step explanation:

328

hellppppp please simplify the expression- 96

Answers

Answer:

Step-by-step explanation:

-√96 = -4√6

kate ran 4 miles how far did she run in kilometers

Answers

Answer:

6.4

Step-by-step explanation:

Answer:

6.5 kilometers

Step-by-step explanation:


3 +5.2.c = 1 - 2.87

Answers

Answer:

-0.0936538462

Step-by-step explanation:

Start by solving the right side of the equation

1 - 2.87 = -1.87

now we have:

3 + 5.2c = -1.87

subtract 3 from both sides to get:

5.2c = -4.87

divide both sides by 5.2 to get:

-0.0936538462

hope that's what you're looking for! :)

Sup nerds. Do this for me or I'm gonna get screamed at by my mom also show all the work

Answers

Answer:

the answer is c they bother are the same and have the same equals

Thomas has a bag with 6 purple and 5 blue marbles. If his friend Nick pulls 2 marbles from the bag, what is the probability of him getting 2 purple marbles. 30/121 30/121 21/22 21/22 3/11 3/11 11/21

Answers

Answer: 3/11

Step-by-step explanation:

Number of purple marbles = 6

Number of blue marbles = 5

Total number of marbles = 6 + 5 = 11

The probability of picking the dust purple marble will be 6/11. After a purple marvel has been picked, there'll be 5 purple marbles left and the total number of marbles will be 10, therefore the probability of picking the second purple marble will be 5/10.

Therefore we then multiply the probability of picking the first purple marble by the probability of picking the second purple marble. This will be:

= 6/11 × 5/10

= 6/11 × 1/2

= 3/11

This table represents a linear function. Find the missing values to complete the table.

Answers

Answer:

(2,5) and (7,12.5)

Step-by-step explanation:

Solve for change in y over change in x using the points (3,13/2) and (6,11). You can then get the equation y=1.5x+2. Then plug in the values you are given from the missing points using the equation. Hope this helped! If it did, please mark the brainliest.

What is 1.3 as a fraction

Answers

Answer:

1.3 is pronounced 1 and 3 tenths so the fraction would be 1 3/10

Step-by-step explanation:

Hope this helps

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