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
Juliette [100K]
3 years ago
13

After a gas-filled balloon is released, it rises 90 feet by the end of the first minute. By the end of the second minute, the ba

lloon rises 120 feet, and by the end of the third minute, it rises 150 feet. How many feet would the balloon rise in 8 minutes?
a.
300
c.
390
b.
330
d.
660
Mathematics
1 answer:
hichkok12 [17]3 years ago
7 0

Answer:

Its B :)

Step-by-step explanation:

You might be interested in
For what value of a does (1/9)^a+1 = 81^a+1 • 27^2-a
Fantom [35]

Answer: a = -4

Step-by-step explanation:

7 0
3 years ago
Mrs. Dimitri purchased a case of yogurt cups. Out of every 10 yogurt cups, 6 are strawberry.
emmasim [6.3K]

Answer:

1) The fraction of yogurt cups that are strawberry is 18/30. (True)

2) There are a total of 60 strawberry yogurt cups. (False)

3) 60% of the yogurt cups are strawberry. (True)

4) 30% of the yogurt cups are NOT strawberry. (False)

Step-by-step explanation

Total number of yogurt cups are = 30

for every 10, 6 are strawberry

thats is for the whole 30 cups total number of strawberries are = 18

1) The fraction of yogurt cups that are strawberry,

that is the fraction of the total number of strawberries over the total number of cups which is 18/30

2) There are a total of 60 strawberry yogurt cups,

the total number of yogurt cups is 30 while that of strawberry is 18

3) 60% of the yogurt cups are strawberry,

which is 18/30 * 100% = 60%

4) 30% of the yogurt cups are NOT strawberry,

percentage of the remaining cups will be 100% - 60% = 40%

8 0
3 years ago
Verify the identity. Show your work. 1 + sec^2xsin^2x = sec^2x
allsm [11]
\bf \textit{Pythagorean Identities}
\\\\
1+tan^2(\theta)=sec^2(\theta)\\\\
-------------------------------\\\\
1+sec^2(x)sin^2(x)=sec^2(x)
\\\\\\
1+\cfrac{1}{cos^2(x)}\cdot sin^2(x)\implies 1+\cfrac{sin^2(x)}{cos^2(x)}\\\\\\ 1+tan^2(x)\implies sec^2(x)
4 0
3 years ago
What is the largest power of 2 that is a divisor of 13^4 - 11^4?
OverLord2011 [107]

Answer:

2^5

Step-by-step explanation:

Given:

(13^4 - 11^4)(13^2+11^2)

add all together with exponents

=48*290

= Then turn into a smaller exponent

= 2^4 * 3 * 2*145

combine like terms

2^4 *2

=2^5

5 0
2 years ago
Read 2 more answers
Alexa pays 7/20 of a dollar for each minute she uses her pay-as-you-go phone for a call, and 2/5 of a dollar for each minute of
9966 [12]

Answer:

  • The system of equations is x + y = 85 and 7/20x+2/5y=31
  • To eliminate the x-variable from the equations, you can multiply the equation with the fractions by 20 and multiply the other equation by -7.
  • B-She used 60 minutes for calling and 25 minutes for data.

Step-by-step explanation:

It is always a good idea to start by defining variables in such a problem. Here, we can let x represent the number of calling minutes, and y represent the number of data minutes. The the total number of minutes used is ...

  x + y = 85

The total of charges is the sum of the products of charge per minute and minutes used:

  7/20x + 2/5y = 31.00

We can eliminate the x-variable in these equations by multiplying the first by -7 and the second by 20, then adding the result.

  -7(x +y) +20(7/20x +2/5y) = -7(85) +20(31)

  -7x -7y +7x +8y = -595 +620 . . . . eliminate parentheses

  y = 25 . . . . . . . . simplify

Then the value of x is

  x = 85 -y = 85 -25

  x = 60

7 0
3 years ago
Read 2 more answers
Other questions:
  • Order the decimal from least to greatest 3.406 3.46 3.006 3.6
    14·2 answers
  • Type the correct answer in the box. Assume that I = 3.14, and round your answer to the nearest integer.
    10·1 answer
  • Justify each step x/3-7=11 x/3=18 x=6
    12·1 answer
  • Which triangle is similar to pqr
    8·2 answers
  • Rewrite the expression using Distributive Property, then simplify:<br><br> -2(-x+3y)-3(x-5y)
    15·1 answer
  • Find the quotient.<br> 4/5 ÷ 40<br>a.50 <br> b.32  <br>c.5/10 <br> d.1/50
    7·2 answers
  • two orienteering courses are a represented on suitable axes as 3x - 2y = - 17 and 3y - 4x =24 the courses have one checkpoint in
    8·1 answer
  • Solve for r V=pir^2h/3
    12·1 answer
  • What is the slope...​
    6·2 answers
  • In a poll, respondents were asked whether they had ever been in a car accident. 259 respondents indicated that they had been in
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!