Mathematics College

Your checking account is in debt at $20. You use this account to make a $10 purchase. Then, you deposit $38 into the account. What is the balance of the checking account?

Answers

Answer 1

Answer:

Step-by-step explanation:

In debt at $20 (like an overdraft) = -20

To make a $10 purchase = -10 on the account

Total debt = -20 + (-10)

= -30

You deposit $38 (this is what you added to your account.) = +38

Balance of the checking = -30 + (+38)

= $8

I really hope this helps. If I am right, please thank, rate 5 stars, and give brainliest. Thank you.

Related Questions

What are the lyrics to
Part of Your World?

Answers

Look at this stuff
Isn't it neat?
Wouldn't you think my collection's complete?
Wouldn't you think I'm the girl
The girl who has ev'rything?
Look at this trove
Treasures untold
How many wonders can one cavern hold?
Lookin' around here you'd think
(Sure) she's got everything
I've got gadgets and gizmos aplenty
I've got whozits and whatzits galore
(You want thingamabobs?
I got twenty)
But who cares?
No big deal
I want more
I want to be where the people are
I want to see
want to see 'em dancin'
Walkin' around on those
(Whad'ya call 'em?) oh - feet
Flippin' your fins you don't get too far
Legs are required for jumpin', dancin'
Strollin' along down a
(What's that word again?) street
Up where they walk
Up where they run
Up where they stay all day in the sun
Wanderin' free
Wish…

Help please, this is definitely not my area of expertise.

Answers

Answer:

she will make 1,815

equation:55x+1

Answer:

Equation: 55 + B = A

Ammount amy earns if she sells 33 books: 88 dollars

Step-by-step explanation:

they let us know that she earns 55 dollars a week. this is the minimum she can earn in a week. So 55 is just 55. she cant earn more or less than 55 a week by just working there. the variable is the ammount of books she sells every week. Every book she sells gives her an extra one dollar to her overall wage per week. so 55 is the base and the one dollar per book is the variable that changes depending on how much she sold. So the equation would the base of 55 and the variable 1x (x being the ammount of books being sold and the 1 being how much money she makes from each book) and now just put them together with a plus sign and it would look like this

55 + 1x = ...

If she was to sell 33 books and shes earning 1 dollar per book 1(33), we only change the x from x to 33

55 + 1(33) which gives us 88

HOPE THIS HELPED. DON'T FORGET TO MARK THIS AS THE BRAINLIEST ANSWER AND GIVE IT A 5 STAR FOR ANYONE IN THE FUTURE STRUGGLING TO DO THIS SAME PROBLEM. HAVE A NICE DAY!!!

The perimeter of the triangle below is 99 units. Find the length of side WX.
Write your answer without variables.
X
4z
wx = 0
Х
V
2 + 2
3z + 1
w
Check

Answers

Answer:

Step-by-step explanation:

Perimeter= 99

XV+VW+WX=99

4z+3z+1+z+2=99

8z+3=99

8z= 96

z=96/8

z= 12

WX= z+2= 12+2= 14.

Hope it helps :-)

Multiply. 3 2/3 x 3/4 Express your answer in simplest form

Answers

3 2/3 x 3/4
= 11/3 x 3/4
=11/4

Suppose that the number of miles that an EV battery (electric vehicle) can run before its battery wears out is exponentially distributed with the average value of 100,000 miles. If a car manufacturer decides to install this type of battery to power the vehicle, do the following: 1) What percentage of the cars will fail at the end of 50,000 miles

Answers

Answer:

The value is [tex]P(X = 50,000) = 6.07*10^{-6}[/tex]

Step-by-step explanation:

From the question we are told that

The average value is [tex]E(x) = 100000 \ miles[/tex]

Generally the exponential distribution function is mathematically represented as

[tex]f(x) = \{ \left \theta* e^{-\theta * x } \ ; \ \ \theta >0} \atop {0 \ ; \ otherwise }} \right.[/tex]

Here [tex]\theta [/tex] is a constant which is mathematically represented as

[tex]\theta = \frac{1}{E(x)}[/tex]

=> [tex]\theta = \frac{1}{100000}[/tex]

=> [tex]\theta =1 *10^{-5}[/tex]

So at x = 50,000 miles (given)

[tex]f(50000) = 1 *10^{-5} * e^{-1*10^{-5} * 50000}[/tex]

[tex]f(50000) = 6.07*10^{-6}[/tex]

So the percentage of the cars will fail at the end of 50,000 miles is

[tex]P(X = 50,000) = 6.07*10^{-6}[/tex]

Which of the following r-values indicates the strongest correlation? r-value = 0.73 r-value = 0.73 r-value = 0.99 r-value = 0.99 r-value = - 0.85 r-value = - 0.85 r-value = - 0.17

Answers

Answer:

[tex]r-value = 0.99[/tex]

Step-by-step explanation:

Given

The list of options

Required

Which represents the strongest correlation.

When [tex]r-value > 0.7[/tex], it is considered to be strong.

Compare this condition with the given options, we're left with:

[tex]r-value = 0.73[/tex]

[tex]r-value = 0.99[/tex]

The above r-values show strong correlation.

However

[tex]r-value = 0.99[/tex] is stronger

because [tex]0.99 > 0.73[/tex]

Hence;

[tex]r-value = 0.99[/tex] answers the question

Solve the equation algebraically. x^2-7x-1/7=0

Answers

Answer:

[tex]x1=\frac{49+\sqrt{2429}}{14} \\x2=\frac{49-\sqrt{2429}}{14} \\[/tex]

Step-by-step explanation:

[tex]x^2-7x-\frac{1}{7} =0\\7x^2-49x-1=0\\D=b^2-4ac=(-49)^2-4*7*(-1)=2429\\x1=\frac{49+\sqrt{2429} }{14} \\x2=\frac{49-\sqrt{2429} }{14} \\[/tex]

It is estimated that 50% of emails are spam emails. Some software has beenapplied to filter these spam emails before they reach your inbox. A certain brandof software claims that it can detect 99% of spam emails, and the probabilityfor a false positive (a non-spam email detected as spam) is 5%.Now if an email is detected as spam, then what is the probability that it isin fact a non-spam email?

Answers

Answer:

P(Non-Spam/Spam Detected) = 5/99

Step-by-step explanation:

To determine the probability that it is in fact a non-spam email, we will employ the use of Bayes Theorem: P(A/B) = (P(B/A) x P(A)) / P(B).

P(Spam) = P(Non-Spam) = 0.5

P(Spam Detected) = P(Spam) * rate of detection = 0.5 * 0.99

P(Detected/Non-Spam) = P(false positives) = 0.05

Using Bayes Theorem, P(Non-Spam/Spam Detected) = ( P(Spam Detected/Non-Spam) x P(Non-Spam) ) / P(Spam Detected)

= 0.05*0.5 / 0.5*0.99

= 5/99

Using conditional probability, it is found that there is a 0.0481 = 4.81% probability that it is in fact a non-spam email.

Conditional Probability

[tex]P(B|A) = \frac{P(A \cap B)}{P(A)}[/tex]

In which

P(B|A) is the probability of event B happening, given that A happened. [tex]P(A \cap B)[/tex] is the probability of both A and B happening. P(A) is the probability of A happening.

In this problem:

Event A: Email detected as spam.Event B: It is a non-spam email.

The percentages of emails detected as spam are:

99% of 50%(spam emails).5% of 50%(non-spam emails).

Hence:

[tex]P(A) = 0.5(0.99) + 0.5(0.05) = 0.52[/tex]

The probability of an email being detected as spam and not being spam is:

479-50=429

There are 429 boys

solving literal equations HELP!!b g=x-c, for x

Answers

Answer:

Step-by-step explanation:

Not sure

Answer:

x = g + c

Step-by-step explanation:

This is the answer because:

1) Solve for x by simplifying both sides of the equation, then isolating the variable.

Therefore, the answer is x = g + c

Hope this helps! :D

What does P(BA) represent?

Answers

B is the given info after your A (event has happened)

RESULT:

P(B/A)= B given when A happens

Como se ecribe 8 de 10
en decimale

Answers

8/10 es 0.8 en decimale :)

5. Michelle feeds her fish 20 grams of fish food a day. How many kilograms of fish food does Michelle use in 8 weeks? Show your work
(A) 0.112
(B) 1.12
(C) 11.2
(D) 112

Answers

Answer: (B) 1.12

Step-by-step explanation:

8 weeks = 56 days

56 days x 20 grams = 1120 grams

1120 grams = 1.12 kilograms

Donovan wants to earn a 70% in Mr. Mottola's class. He knows he currently has an 67% in the class after 9 grades. What is the minimum grade Donovan would need to earn in order to have a 70%.

Answers

Donovan needs to earn at least a 73% in order to have a 70%

PLEASE HELP QUICK!!! 3x − 2(6 − x) = 7x + 2(5 + x) − 6

Answers

Answer:

it would be x=-4

hope i helped ya

Answer:

x = -4

Step-by-step explanation:

3x -2(6-x) = 7x +2(5+x) -6

Distribute -2 through the parentheses 3x -12 +2x = 7x +2(5+x) -6

Distribute 2 through the parentheses 3x -12 +2x = 7x +10 +2x -6

3x -12 +2x = 7x +10 +2x -6 cancel equal terms on both sides of the equation

3x -12 = 7x +10 -6 subtract the numbers 3x -12 = 7x +4

Move variable to the left left handed side and change its sign

3x -7x-12 = 4 --> 3x -7x = 4 + 12 --> -4x = 4+12 --> -4x = 16

Divide both sides of the equation by -4 --> x = -4

Suppose you deposit $134,000 into an account paying 8% simple annual interest, and that you won't touch the
account until it holds $1,000,000. How long must you wait?
Answer:
years. (Round your answer to the nearest year.)

Answers

134,000x 0.08= 10,720= the money you get every year from interest
1,000,000/10,720= 93.28... or 93 years

Answer:

134,000x 0.08= 10,720= the money you get every year from interest

1,000,000/10,720= 93.28... or 93 years

Step-by-step explanation:

On Monday, you swim 12 laps in 30 minutes. On Tuesday, you swim 15 laps in 45 minutes. Are these rates proportional?

Answers

Answer:

no.

Step-by-step explanation:

12/30 = 0.4

15/45 = 1/3

Simplify by combining like terms -10+2(3x-1)+1

Answers

Answer: -11+6x

Step-by-step explanation:

Understand PEMDAS method (Operates from left to right)

ParenthesisExponentsMultiplication and DivisionAddition and Subtraction

SOLVE:

Given

-10+2(3x-1)+1

Expand parenthesis

-10+6x-2+1

Use PEDMAS method

-10-2+1+6x

-12+1+6x

-11+6x

Hope this helps!! :)

Plz hellppp -4(x-2) +5 = -10

Answers

Answer:

The answer is 5.75

Step-by-step explanation:

I used desmos

Steps to solve:

-4(x - 2) + 5 = -10

~Distribute left side

-4x + 8 + 5 = -10

~Combine like terms

-4x + 13 = -10

~Subtract 13 to both sides

-4x = -23

~Divide -4 to both sides

x = 23/4

Best of Luck!

The temperature outside in -5°C on Monday. Overnight it drops by 3°C. Between 9 am and noon the next day it rises 2°C. What is the temperature on Tuesday at noon?

Answers

Answer:

-6

Step-by-step explanation:

-5-3=-8

-8+2=-6

you subtract 3 from the Total temperature then and 2 to the answer

25x - 10y = -35

Helpppp

Answers

Answer: x = 1 y = 6

Step-by-step explanation: 25x1=25, -10x6= -60, 25-60=-35.

Have a great day!

one millon divide by 473.8

Answers

Answer:23(22.95684113865932)

Step-by-step explanation:

Japanese pan noodles. Ten students order noodles at a certain local restaurant. Their orders are placed independently. Each student is known to prefer Japanese pan noodles 40% of the time (it is a very popular and tasty dish!). a. What is the probability that all ten of the students order Japanese pan noodles

Answers

Answer:

The probability that all ten of the students order Japanese pan noodles is 0.0001048576.

Step-by-step explanation:

Note: See the attached Microsoft word file for the calculation.

Kinda confused!! need help!!

Answers

Answer:

I think last option is correct

Answer:

Option 2. EG, DH, CG, FH

Step-by-step explanation:

Skew lines are lines that do not lie on the same plane, and they also never intersect

Let's verify options

Option 1

AC is an exception, it intersects AB

Option 2

All good, all lines are skew with AB

Option 3

GH is an exception, Can be on the same plane with AB

Option 4

CD is an exception, can be on the same plane with AB

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