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
Sidana [21]
3 years ago
8

Erica's cell phone bill for July was $82. She sent a check for $50 and then made $37 worth of calls in August. How much did she

owe on her cell phone bill?
Mathematics
1 answer:
KIM [24]3 years ago
7 0
The Answer is -69 because if you lay out the problem it is -82+50-37=-69
You might be interested in
Identify the value of a
Amanda [17]
Use exponential law, we have

4 0
3 years ago
Find the sum of the first 20 terms of the arithmetic sequence 4, -4, -12, -20​
Vsevolod [243]

Answer:

The sum of the first 20 terms is -1440.

Step-by-step explanation:

We want to find the sum of the first 20 terms of the arithmetic sequence:

4, -4, -12, -20...

The sum of an arithmetic sequence is given by:

\displaystyle S=\frac{k}{2}(a+x_k)

Where <em>k</em> is the number of terms, <em>a</em> is the initial term, and <em>x</em>_<em>k</em> is the last term.

Since we want to find the sum of the first 20 terms, <em>k</em> = 20.

Our initial term <em>a</em> is 4.

Our last term is also the 20th term as we want the sum of the first 20 terms.

To find the 20th term, we can write an explicit formula for our sequence. The explicit formula for an arithmetic sequence is given by:

x_n=a+d(n-1)

Where <em>a</em> is the initial term, <em>d</em> is the common difference, and <em>n</em> is the <em>n</em>th term.

Our initial term is 4. From the sequence, we can see that our common difference is -8 since each subsequent term is eight less than the previous term. Therefore:

x_n=4-8(n-1)

Then the last or 20th term is:

x_{20}=4-8(20-1)=4-8(19)=-148

Therefore, the sum of the first 20 terms are:

\displaystyle\begin{aligned} S_{20}&=\frac{(20)}{2}\left((4)+(-148))\\&=10(-144) \\&= -1440\end{aligned}

5 0
2 years ago
Read 2 more answers
The tempature in Frwnoo is 71.8.<br><br> Round this temp. to nearest whole number.
makkiz [27]

Answer:

72

Step-by-step explanation:

Round to nearest whole number.

71.8 is rounded to 72.

72 is the answer to your question.

8 0
2 years ago
Read 2 more answers
PLEASE HELP! THANKS!
MArishka [77]

Answer:

The question is kinda funny. I think the graph isn't correct cos a and b coordinate ain't right

8 0
2 years ago
QUESTION 3 Toyota provides an option of a sunroof and side airbag package for its Corolla model. This package costs $1400. Assum
Orlov [11]

Answer:

n=601

Step-by-step explanation:

Formula used:

n=z(\frac{\alpha }{2})^2\frac{p(1-p) }{E^2}

Solution:

n=z(\frac{\alpha }{2})^2\frac{p(1-p) }{E^2}

Where,

\frac{\alpha }{2}=0.025

As there is no previous estimate for p

Then, p=0.5

Here on using the table

z(\frac{\alpha }{2}) =1.959963985

Also,

E=0.04

p=0.5

Thus,

n=600.2279407

On approximating the value,

n=601

6 0
2 years ago
Other questions:
  • Round 1928.956 to the nearest TENS ( no commas)
    14·1 answer
  • The base of a solid SSS is the region bounded by the ellipse 4x^2+9y^2=364x 2 +9y 2 =364, x, squared, plus, 9, y, squared, equal
    7·1 answer
  • Megan spent two out of five of her money on a doll and half of the remainder on a musical box she spent eight dollars more on th
    6·1 answer
  • How many times does 3 go into 22
    12·1 answer
  • 3x-5y=-35 in slope intercept form
    13·2 answers
  • –8x – 8y = 0<br> –8x + 2y = –20
    15·2 answers
  • Whoever gets this corrects gets brainliest!!!
    5·2 answers
  • Write an explicit formula for the sequence 3,-18,108,-648,...
    13·1 answer
  • Given the rectangle ABCD, find measure of angle EFH, measure of angle FEH. Also find, HI and GE.
    7·1 answer
  • F(x) = 3x³+4x² - 8x - 2
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!