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
OverLord2011 [107]
3 years ago
8

If 7=42,6=30,5=20 then 3=? find it's value​

Mathematics
2 answers:
AleksandrR [38]3 years ago
5 0

Answer:

6

Step-by-step explanation:

7=42 is 7*6

6=30 is 6*5

5=20 is 5*4; it's multiplied by the number below it, so 3 will be 3*2

Mashutka [201]3 years ago
5 0

3 = 6

Step-by-step explanation:

Given: 7 = 42, 6 = 30, 5 = 20

7 <em>(</em><em>x </em><em>6</em><em>)</em> = 42

6 <em>(</em><em>x </em><em>5</em><em>)</em> = 30

5 <em>(</em><em>x </em><em>4</em><em>)</em> = 20

Follow the pattern

4 <em>(</em><em>x </em><em>3</em><em>)</em> = 12

3 <em>(</em><em>x </em><em>2</em><em>)</em> = 6

3 = 6

You might be interested in
Which of the following best describes a chord?
Alinara [238K]

Answer:

The Answer is A, a line segment that has both endpoints on a circle.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Help help help please and thank you
Mademuasel [1]

Answer: the answer is d

Step-by-step explanation:

7 0
3 years ago
Are these lines parallel perpendicular or neither
Natasha_Volkova [10]

Answer:

perpendicular

Step-by-step explanation:

start but putting each line into the standard line format

2x-y=-5

-y=-2x-5

y=2x+5

x+2y=-6

2y=-x-6

y=-(1/2)x-3

if lines are parallel the slopes would be the same. 2 is not equal to -1/2

if lines are perpendicular the slope of one would be the opposite inverse of the other.

negative inverse of 2 = - (1/2)

so the lines are perpendicular

8 0
3 years ago
I am not sure if i did this right she wants us to distribute and get only one x on one side and find the answer.
umka21 [38]


I got x=18


3(x-4)-2(3x+4)=4(3-x)+5x+4

3x-12-6x-8=12-4x+5x+4

3x-20=16+x

2x=36x

x=18

5 0
3 years ago
A radioactive substance decays exponentially: The mass at time t is m(t) = m(0)ekt, where m(0) is the initial mass and k is a ne
velikii [3]

Answer:

M = 1/0.000121 = 8264.5 years

Step-by-step explanation:

M = − k ∫∞₀ teᵏᵗdt

To obtain this mean life, we'll use integration by parts to integrate the function ∫ teᵏᵗdt

∫udv = uv - ∫ vdu

u = t

du/dt = 1

du = dt

∫ dv = ∫ eᵏᵗdt

v = eᵏᵗ/k

∫udv = ∫ teᵏᵗdt

uv = teᵏᵗ/k

∫ vdu = eᵏᵗ/k

∫ teᵏᵗdt = (teᵏᵗ/k) - ∫eᵏᵗ/k

But, ∫eᵏᵗ/k = (1/k) ∫eᵏᵗ = (1/k²) eᵏᵗ = eᵏᵗ/k²

∫ teᵏᵗdt = (teᵏᵗ/k) - eᵏᵗ/k²

The rest of the calculation is done on paper in the image attached to this question

3 0
3 years ago
Other questions:
  • Data collected at elementary schools in dekalb county, ga suggest that each year roughly 25% of students miss exactly one day of
    8·1 answer
  • Which fraction is equivalent to fraction with numerator negative 3 and denominator 7?
    14·2 answers
  • For people doing some jobs, long spells of high pressure weather can bring problems. Give three examples of jobs that would be a
    15·1 answer
  • Which are lines that will intersect?<br>Which are perpendicular lines?<br>Which are skew lines?​
    14·2 answers
  • Solve the proportion: (will mark brainliest)
    7·2 answers
  • HELP
    6·1 answer
  • What is the face value of 2 in the number 286?
    15·2 answers
  • PLEASE HELPSHSHSJAJSNDMFMMF
    14·1 answer
  • Solve all of them please u get 30 points​
    13·2 answers
  • Write the equations of the circle with center at -1,5 that passes through the point 2,9​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!