1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
tekilochka [14]
3 years ago
7

NEED HELP RIGHT AWAY DONT HAVE ANY TIME TO WAIT!!

Mathematics
2 answers:
shtirl [24]3 years ago
6 0

Answer: There are 10 4-marks questions and 30 2-marks questions.


Fiesta28 [93]3 years ago
5 0
Question 1:
------------------------

Total points = 100
Total question = 40
Type of questions : 2-points question and 4-points questions

Assumed all 40 questions are 2-points questions.
Total points = 40 x 2 = 80

Difference in points = 100 - 80 = 20 points
Difference in the 2 type of questions = 4 - 2 = 2

Number of 4 marks questions = 20 ÷ 2 = 10 

Number of 2 marks questions = 40 - 10 = 30

Answer: There are 10 4-marks questions and 30 2-marks questions.

------------------------------------------------------------------------------------------------

Question 2:
------------------------

Let x be the number of offices you need to clean.

Total cost = 315 + 4x
Total revenue = 25x

To break even,
315 + 4x = 25x
21x = 315
x = 15

Answer: You need to clean 15 offices to break even.

------------------------------------------------------------------------------------------------

Question 3:
------------------------

Total distance (including return trip) = 255 + 255 = 510 miles

Total time taken = 1.7 + 1.5 = 3.2 hours

Speed = Distance ÷ time

Speed = 510 ÷ 3.2 = 159.38 miles/hour

Answer: The average speed is 159.38 miles/hour

You might be interested in
17. Ms Steele is building a circular fountain, on the diagram 2 centimeters is equal to 5 feet. If
tiny-mole [99]

Answer:

George Washingmachine

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
What is cotangent of A divided by Tangent of A?
grin007 [14]
tan A =  \frac{1}{cot A} cot A =  \frac{1}{tan A} 

\frac{1}{cot A} / \frac{1}{tanA} =1

4 0
3 years ago
Find ​(a) the slope of the curve at the given point​ p, and ​(b) an equation of the tangent line at p. y=−2−9x2​; ​p(2​,−38​)
Neporo4naja [7]

Answer:

a) -36

b) y = -36x +34

Step-by-step explanation:

a) The slope is found using the derivative of the function.

  f'(x) = dy/dx = 0 -9(2x) = -18x

Then at x=2, the slope is ...

  f'(2) = -18·2 = -36

___

b) The point-slope form of the equation can be written as ...

  y = -36(x -2) -38

Simplifying to slope-intercept form, we get ...

  y = -36x +34

6 0
3 years ago
Start solving #2 with the substitution method
Brums [2.3K]

Answer:

A=3, B =3, C = 3

Step-by-step explanation:

9/3 (the letters) = 3 Each

3 - 24 - 3 = -27

2a = 6

6 - 3 + 3 = 6

A, b, c, all equal 3.

7 0
3 years ago
Solve and round the answer to the nearest hundredths plz helpppp
Kaylis [27]

Answer:

696.91

Step-by-step explanation:

V = \frac{4}{3}  *\pi *r^3\\=  \frac{4}{3}*\pi *5.5^3\\= \frac{4}{3}*\pi *166.375\\=696.9099703\\

≈ 696.91

7 0
3 years ago
Other questions:
  • Help help helpsbnddnd
    8·2 answers
  • 99/101 as a repeating decimal using bar notation to indicate the repeating digits
    14·1 answer
  • Explain please I'm confused
    11·1 answer
  • Can someone please help me
    7·1 answer
  • Ethan had 81 CDs until he won c more in a contest. Choose the expression that shows how many CDs Ethan has now.
    14·1 answer
  • Garth is giving 10 of the action figures from his collection to his brother. If a represents the number of action figures Garth
    14·1 answer
  • A company sells widgets. The amount of profit, y, made by the company, is related to
    15·1 answer
  • What is the annual interest rate for an account that compounds monthly at a rate of 2.5%?
    14·1 answer
  • Carlos is tossing a quarter. What is the probability he will toss heads?
    11·1 answer
  • -8 &lt; x/4 <br> I need the answer ASAP
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!