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
mr_godi [17]
2 years ago
11

Given a+b=7 and a-b=3, find the following 3^a÷3^b

Mathematics
1 answer:
gulaghasi [49]2 years ago
3 0

Answer:

27

Step-by-step explanation:

a + b = 7

a - b = 3

2a = 10

a = 5

b = 7 - 5

b = 2

3⁵ / 3² = 3³ using law of indices

3³ = 27.

You might be interested in
3x+2y=4 <br> 4x+5y=17<br> What is the value of x and y?
Fudgin [204]
{3x+2y=4    /*5
{4x+5y=17    /*(-2)

{15x+10y=20
<u>{-8x-10y=-34        </u>(+)
<em>7x=-14</em><em />
<em>x=-2</em>

15x+10y=20
15*(-2)+10y=20
-30+10y=20
10y=50
<em>y=5</em>

5 0
3 years ago
Read 2 more answers
Tina and Tracey are putting 70 things from their present lives into a few boxes, and they are going to bury the boxes so they ca
vlada-n [284]

number of full boxes is 2

things left over is 10

6 0
3 years ago
Read 2 more answers
I need explanation + answer.
finlep [7]

Answer:

C. 22,400.

Step-by-step explanation:

62.9% = 0.629 as a decimal fraction.

Total number of employees in small businesses in the county

= 270 * 132.

So the estimated number with less than $1000 savings

= 270 * 132 * 0.629

= 22,417.

4 0
3 years ago
A stick is broken into two pieces, at a uniformly random break point. Find the CDF and average of the length of the longer piece
Oksanka [162]

Answer:

P(L ≤ l) =P (1-l ≤ U ≤ l)= l- ( 1 - l ) = 2 l - 1

Step-by-step explanation:

let assume that stick has length 1.Random variable L that make length of a longer piece and random variable U that mark point .See that L < l means that

U≤ l and 1-U ≤l

P(L ≤ l) =P (1-l ≤ U ≤ l)= l- ( 1 - l ) = 2 l - 1

this means 1-l≤U≤l

so we have

if we have L  [1/2,1]

then apply the formula we have E(L)=3/4

5 0
3 years ago
charlie has 2 fair coins. he repeatedly tosses the pair of coins simultaneously (i.e., two tosses at a time), until he has seen
Serggg [28]

By using the trial method we get a total number of trials taken by Charlie to see both sides of both the coins is 4.

<h3>What is probability?</h3>

Probability is the name of the area of mathematics that deals with the examination of random events. The ratio of favorable occurrences to the total number of events is used to calculate an event's probability.

P(E) = F(E)/T (E)P(E)

It stands for the probability that an event will occur.

F(E) = Amount of favorable occurrences

Total number of trials (T(E))

Given that Charlie has 2 fair coins.

If he tosses the pair of coins simultaneously, then the number of samples can be HH, HT, TH, TT.

So to see both sides of both the coins he should toss the coin four times.

To know more about probability, visit:

brainly.com/question/12629667

#SPJ4

7 0
11 months ago
Other questions:
  • 4.<br>What's the radius of a circle with an area of 123 square feet?
    13·1 answer
  • R - 31<br><br>b ÷ 3<br><br>2 + x\8<br><br>21d + 14<br><br>I need help. please, I don't understand
    14·1 answer
  • A toy box has a volume of 3 cubic yards. what is the volume of this toy box in cubic feet? 1 yard = 27 cubic feet
    5·1 answer
  • How do I solve (-9,17); slope -4/3
    14·2 answers
  • How do u change 1/4 to a decimal I know it's 0.25 but what is the steps and no it not in elementary I'm in 6th grade FYI
    11·2 answers
  • The point p and all points to the left and right of P ​
    12·1 answer
  • Rename the following fraction in three different ways: 3/8<br> Please hurry
    13·2 answers
  • Bài 7. Biện luận theo tham số a hạng của các ma trận sau:
    13·1 answer
  • Challenge An arts academy requires there to be 5 teachers for every 115 students and 3 tutors for
    15·1 answer
  • Molly was on a long 136 mile road trip. The first part of the trip there was lots of traffic, she only averaged 16 mph. The seco
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!