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
mafiozo [28]
3 years ago
8

2 people have calculators, one person starts at 100 and subtracts 7 each time. Another starts at zero and adds 3 each time. If t

hey press keys at the same time, will they ever get to same number?
Mathematics
2 answers:
GREYUIT [131]3 years ago
6 0

Answer:

yes, they will get the same number after they both clicked the numbers 10 times

Step-by-step explanation:

the equation for this would be:

-7x + 100 = 3x

add 7x on both sides of the equal sign

100 = 10x

divide 10 on both sides of the equal sign

10 = x

also x represents the amount of times clicked

zaharov [31]3 years ago
3 0

Answer:

  Yes, after 10 key presses, both will arrive at the number 30.

Step-by-step explanation:

The difference between the numbers on the calculators is reduced by 10 with each key press. After 10 key presses, the initial difference of 100 will be zero. After 10 key presses of (-7), the calculator starting at 100 will be ...

  100 +10(-7) = 30

After 10 key presses of (+3), the calculator starting at 0 will be ...

  0 +10(+3) = 30

Both calculators will show 30 after 10 key presses.

You might be interested in
Round this whole number
Dmitry [639]

the second 3  (from the left) is in the hundreds place so we look at the  1st 7 (from the left) to determine how to round

since 7 is 5 or greater, we round the 3 to a 4

3400

Choice D

4 0
2 years ago
Read 2 more answers
If tanA+sinA=m and tanA-sinA=n.prove that m^2-n^2=4√mn
mash [69]

Let a=\tan A and b=\sin A. Then

m^2-n^2=(a+b)^2-(a-b)^2=(a^2+2ab+b^2)-(a^2-2ab+b^2)=4ab

\implies m^2-n^2=4\tan A\sin A

and

mn=(a+b)(a-b)=a^2-b^2

\implies4\sqrt{mn}=4\sqrt{\tan^2A-\sin^2A}

The expression under the square root can be rewritten as

\tan^2A-\sin^2A=\dfrac{\sin^2A}{\cos^2A}-\sin^2A=\sin^2A\left(\dfrac1{\cos^2A}-1\right)=\sin^2A(\sec^2A-1)

Recall that

\sin^2A+\cos^2A=1\implies\tan^2A+1=\sec^2A

so that

\tan^2A-\sin^2A=\sin^2A\tan^2A

and assuming \sin A>0 and \tan A>0, we end up with

4\sqrt{\tan^2A-\sin^2A}=4\tan A\sin A

so that

m^2-n^2=4\sqrt{mn}

as required.

5 0
2 years ago
At Al's Athletic Club, the monthly membership fee for a student is $25 and the monthly
Igoryamba

Answer:

The relationship ⇒ <u>25x + 40y = 12,250</u>

Step-by-step explanation:

The number of student memberships = x

The number of adult memberships = y

The monthly membership fee for a student = $25

The monthly membership fee for an adult = $40

The total fee = 25x + 40y

Al's Athletic Club receives $12,250 in membership fees for the month of January.

So, the relationship between x and y is:

<u>25x + 40y = 12,250</u>

5 0
3 years ago
What is 5 x 5 x 5????? thanks
siniylev [52]

Answer:125

Step-by-step explanation:magic

6 0
3 years ago
Read 2 more answers
Doing a math test. Help?​
xeze [42]
4950 kg hope this helps!!!
5 0
3 years ago
Other questions:
  • Kimberly took out a payday loan for $1500 due in 4 weeks that charged a $135 fee. What is the periodic interest rate of the loan
    12·2 answers
  • Find the measure of DEA
    10·1 answer
  • What is the 15th term in the sequence using the given formula? Cn=3n-1
    10·2 answers
  • What is the equation of the line that passes through the point (-2,7) and is perpendicular to the line 2 - 4y = 24?
    14·1 answer
  • Please help me with this :)
    5·1 answer
  • Help me, I listen to Tyler the creator
    10·2 answers
  • Help<br> ===============
    7·2 answers
  • Evaluate the piecewise function at the given values of the independent variable.
    7·2 answers
  • Haddon’s favorite clothing store is having a sale. Shirts are 25% off and pants are 15% off. Haddon has $90 to spend on clothes.
    14·2 answers
  • Yesterday, there were 60 problems assigned for math homework. Adele got
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!