What is the solution to the system?
a+b=4
a=2b-8

Answers

Answer 1
B=4-a sorry if that’s not correct but I think it is

Related Questions

90 ft/h = ____ mi/min

Answers

If you mean  hours, and Minutes that is 1 hour and 30 minutes.. s a fraction that is 1 1/2. Or 90/60

Hey so can somebody help me? Please dont guest on this, im on the test and i dont want to fail, so please actually try thanks (you will get brainliest if you explain where the arrow goes and the answer of the problem) ( but the main point is to explain where the arrow goes)

Answers

Answer:

The answer would be -2 1/6

Step-by-step explanation:

The arrow goes to the left side because it is negative. -1/3 would be equal to -2/6. -5/6 + -1/6 + -1/6 = -1 1/6. Add the 1 and you get -2 1/6!

Hope this helped ^^

Erwin began the month with a bank balance of $0. His bank statement shows one credit (+) and one debit (-). HIs balance at the end of the month was $15. What could be the amounts shown as Erwin's bank statement. Explain how you got your answer.

Answers

Answer:

Credit ⇒ 45

Debit ⇒ $30

Step-by-step explanation:

Credit = $45

Debit = $30

When an account balance increases it means that it has been credited and when it decreases, it has been debited.

The beginning balance here is $0 and the closing balance is $15.

There were 2 transactions, one credit and one debit.

For the closing balance to be $15, the Credit amount must have been $15 more than the Debit amount.

Please find the derivative of [tex]\displaystyle \frac{e^{\frac{3}{x}}}{x^2}[/tex]. Show all work necessary - thanks!

Answers

Hello! :)

[tex]\large\boxed{\frac{-e^{\frac{3}{x}} (3 + 2x )}{x^{4}}}[/tex]

Find the derivative using the quotient rule:

[tex]\frac{f(x)}{g(x)} = \frac{g(x) * f'(x) - f(x) * g'(x)}{(g(x))^{2}}[/tex]

In this instance:

[tex]f(x) = e^{\frac{3}{x} }\\\\g(x) = x^{2}[/tex]

Use the following properties to find the derivative of f(x) and g(x):

[tex]e^{u} = u' * e^{u}\\\\x^{n} = nx^{n-1}[/tex]

Use the quotient rule:

[tex]\frac{x^{2} * (e^{\frac{3}{x}} * (-3x^{-2})) - e^{\frac{3}{x}} * 2x }{(x^{2} )^{2}}[/tex]

Simplify the numerator:

[tex]\frac{(e^{\frac{3}{x}} * (-3)) - e^{\frac{3}{x}} * 2x }{(x^{2} )^{2}}[/tex]

Factor out [tex]e^{\frac{3}{x}}[/tex]

[tex]\frac{e^{\frac{3}{x}} (-3 - 2x )}{x^{4}}[/tex]

Factor out -1 from the numerator:

[tex]\frac{-e^{\frac{3}{x}} (3 + 2x )}{x^{4}}[/tex]

And we're done! Thanks for posting the question to my 1000th answer!

Answer:

[tex]\displaystyle \frac{d}{dx}[\frac{e^{\frac{3}{x}}}{x^2}] = \frac{-3e^{\frac{3}{x}}}{x^4} - \frac{2e^{\frac{3}{x}}}{x^3}[/tex]

General Formulas and Concepts:

Pre-Algebra

Splitting Fractions

Algebra I

Terms/CoefficientsFactoringExponential Rule [Multiplying]: [tex]\displaystyle b^m \cdot b^n = b^{m + n}[/tex]

Calculus

Derivatives

Derivative Notation

Basic Power Rule:

f(x) = cxⁿ f’(x) = c·nxⁿ⁻¹

Derivative Rule:    [tex]\displaystyle \frac{d}{dx} [e^u]=e^u \cdot u'[/tex]

Quotient Rule:      [tex]\displaystyle \frac{d}{dx} [\frac{f(x)}{g(x)} ]=\frac{g(x)f'(x)-g'(x)f(x)}{g^2(x)}[/tex]

Step-by-step explanation:

Step 1: Define

[tex]\displaystyle \frac{e^{\frac{3}{x}}}{x^2}\\f(x) = e^{\frac{3}{x}}\\g(x) = x^2[/tex]

Step 2: Differentiate

Quotient Rule:                                                                                                [tex]\displaystyle \frac{d}{dx}[\frac{e^{\frac{3}{x}}}{x^2}] = \frac{\frac{d}{dx}[e^{\frac{3}{x}}] \cdot x^2 - \frac{d}{dx}[x^2] \cdot e^{\frac{3}{x}}}{(x^2)^2}[/tex]Derivative Rule:                                                                                              [tex]\displaystyle \frac{d}{dx}[\frac{e^{\frac{3}{x}}}{x^2}] = \frac{e^{\frac{3}{x}} \cdot \frac{-3}{x^2} \cdot x^2 - \frac{d}{dx}[x^2] \cdot e^{\frac{3}{x}}}{(x^2)^2}[/tex][Simplify] Multiply:                                                                                           [tex]\displaystyle \frac{d}{dx}[\frac{e^{\frac{3}{x}}}{x^2}] = \frac{-3e^{\frac{3}{x}} - \frac{d}{dx}[x^2] \cdot e^{\frac{3}{x}}}{(x^2)^2}[/tex]Basic Power Rule:                                                                                          [tex]\displaystyle \frac{d}{dx}[\frac{e^{\frac{3}{x}}}{x^2}] = \frac{-3e^{\frac{3}{x}} - 2x^{2-1} \cdot e^{\frac{3}{x}}}{(x^2)^2}[/tex][Simplify] Subtract Exponents:                                                                       [tex]\displaystyle \frac{d}{dx}[\frac{e^{\frac{3}{x}}}{x^2}] = \frac{-3e^{\frac{3}{x}} - 2x \cdot e^{\frac{3}{x}}}{(x^2)^2}[/tex][Simplify] Multiply:                                                                                           [tex]\displaystyle \frac{d}{dx}[\frac{e^{\frac{3}{x}}}{x^2}] = \frac{-3e^{\frac{3}{x}} - 2xe^{\frac{3}{x}}}{(x^2)^2}[/tex][Simplify] Exponent Rule:                                                                               [tex]\displaystyle \frac{d}{dx}[\frac{e^{\frac{3}{x}}}{x^2}] = \frac{-3e^{\frac{3}{x}} - 2xe^{\frac{3}{x}}}{x^{2 + 2}}[/tex][Simplify] Add Exponents:                                                                              [tex]\displaystyle \frac{d}{dx}[\frac{e^{\frac{3}{x}}}{x^2}] = \frac{-3e^{\frac{3}{x}} - 2xe^{\frac{3}{x}}}{x^4}[/tex][Simplify] Fraction Split:                                                                                  [tex]\displaystyle \frac{d}{dx}[\frac{e^{\frac{3}{x}}}{x^2}] = \frac{-3e^{\frac{3}{x}}}{x^4} - \frac{2xe^{\frac{3}{x}}}{x^4}[/tex][Simplify - 2nd Fraction] Cancel Like Terms:                                                [tex]\displaystyle \frac{d}{dx}[\frac{e^{\frac{3}{x}}}{x^2}] = \frac{-3e^{\frac{3}{x}}}{x^4} - \frac{2e^{\frac{3}{x}}}{x^3}[/tex]

And we have our final answer!

Help ASAP please! Thanks, will give brainliest if correct.

Answers

Answer:

A

Step-by-step explanation:

What percentage of a 15-ft tree is a little 3-ft sapling?

Answers

20% is the 3-ft sapling

Answer:

20%

Step-by-step explanation:

1 2 3 5 6 7 8 10 TIME REMAINING 01:51:26 The function f(x) is shown on the graph. What is flo)? y у O 12 only -15 flx) 0 2 and 3 only O-2, -1, 1, and 2 only 0 -2, -1, 1, 2 and 12 9+ 3 -7 6 5 4 3 2 +1 4 5 6 7 X 3 6 + -9 -12+ -15-​

Answers

Answer: 12 only

Step-by-step explanation:

The value of f(0) from the graph of f(x) is (a) 12 only

What are functions?

Functions are used to represent graphs, equations, ordered pairs and relations.

To interpret the value of the function, we start by reading the graph.

From the graph, the value of the function when x = 0 is 12

This means that:

[tex]f(0) = 12[/tex]

Hence, the value of f(0) from the graph of f(x) is (a) 12 only

Read more about functions and graphs at:

https://brainly.com/question/13136492


a) what numbers are represented by the above graph

Answers

Answer: what graoh?

Step-by-step explanation:

A line passes through (2, 5) and (8, 10). Find the value of y if (12, y) lies on the line. correct answer gets brainliest

Answers

Answer:

[tex]y = 6[/tex]

[tex]hope \: it \: helps... \\ mark \: as \: brainliest.....[/tex]

PLZZZZZZZZZZZZ HELP ME WITH THIS I WILL MARK YOU

Answers

Answer:

First question:y=-1/2x+3

Second question: y=1x

Convert 10.8% to a decimal

Answers

.108 I hope that this helps

Answer:

0.108

Step-by-step explanation:

I will give brainleist! Please help on all it’s my homework i don’t know how to do

Answers

Answer:

17) 3   18) 3

Step-by-step explanation:

Answer:

17. C

18. C

Step-by-step explanation:

The greater the negative number, the less the number values. -10 is smaller than -8 because -10 is farther away from the number line to the left.

Go in terms of the tenths place. If its smaller than the number will be less than the bigger numbers. 0.227 is bigger than 0.18 because it has a 2 in the tenths place.

I hope this helped and if it did I would appreciate it if you marked me Brainliest. Thank you and have a nice day!

help 6th grade math i will give brainliest

Answers

exponent: 3^5
standard form: 243

Please help:(

If g(x) = 3x + 1, find the value of x if g(x) is 10.

Answers

i believe you fill in 10 for the x

= 3(10)+1
=30+1
=31

Find the measure of the angle indicated

Answers

Answer:

Where's the angle?

Step-by-step explanation:

Answer:

there is no pic...

Step-by-step explanation:

What is the distance between point R(−1, 7) and point T(−7, 7) ?

1 unit
6 units
7 units
8 units
pls help me i am trying to get a better grade in math

Answers

Answer:

6 units to the right

Step-by-step explanation:

i added it to a graph.

Answer: You can use the distance formula to find the distance between any two points ion the plane. In this case, look carefully at the coordinates:

R(-1, 7) and T(-7, 7), Notice they both have y-coordinate 7. That means they are both on the same horizontal line. To find their distance, just subtract -7 from -1 and take the absolute value.

|-1 - (-7)| = |-1 + 7| = |6| = 6

The distance is 6 units

Step-by-step explanation:

Simplify: 3(r + 12r2) – 2(r + 8)

Answers

36r2+r-16 is the answer, btw the 2 besides the r in 36 is an exponent

The sum of three consecutive integers is -720. What are the three integers?

this is prob really ez but im making sure

pls help asap

Answers

Answer:

108

Step-by-step explanation:

Explanation: Three consecutive even integers can be represented by x, x+2, x+4. The sum is 3x+6, which is equal to 108. Thus, 3x+6=108.

Can you guys help me please

Answers

y = 0 + 7x

i hope this helps ! please mark brainliest :?

Answer:

5 hours

Step-by-step explanation:

Equation for Company A: 10+5x

Equation for Company B: 7x

10+5x=7x

5=x

Plzz I need help due today!!!!

Answers

A is increasing , b is maximum , c is decreasing, and d is minimum

Find the length of MN

Answers

Answer:

Is there supposed to be a screenshot?

then again this is your first question .....................

Select the correct answer.
You're given side AB with a length of 6 centimeters and side BC with a length of 5 centimeters. The measure of angle A is 30%. How many
triangles can you construct using these measurements?
А.0
В.1
C.2
D. infinitely many

Answers

Answer:

D. infinitely many

Step-by-step explanation:

I assume that percentage sign is a degree symbol.

If there are only two sides given, there can be an infinite amount of triangles

Elijah works at Chick-fil-A and gets paid weekly. He does not have any money in his bank account yet, but will
start saving for a PlayStation 5. After 4 weeks, he has $150. In 8 weeks, he has $300.

Answers

what is the question?

I need help please!!!!!!!

Answers

Just a guess but 75 degrees?

Answer:

75°

Step-by-step explanation:

We can assume that the angle shown and an angle that measures 15° makes a complementary angle. A complementary angles is when two angles add up to be 90°. We can create an equation and simplify:

15 + x = 90

x = 75

Best of Luck!

Write the equation of the line fully simplified slope intercept form.

Answers

Answer:

y=-2x+5

Step-by-step explanation:

2x + y + 3z = 19
3x + 2y + 3z = 19
X + 4y + 2z = 9
What is the value of x?

Answers

Answer:

4.5

2.5

4

Step-by-step explanation:

(someone passed this to me) 90% of people marry there 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on nine comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love you

X = 1 (Just adding characters)

What is the length of side AC

Answers

Answer:

7 Units.

Step-by-step explanation:

First of all, you could just count the units, but that's not really too effective. Otherwise, you could start from the coordinates of the "C" point, and see how it's at -Y = -5. Therefore, to get to the line separating the two points, you would have to subtract 5 from 5 to get to the line. Now, you look at point "A". It's Y coordinate is 2. Therefore, adding 5 and 2 together gives you 7 units.

Find slope.
х
у
-7
-1
0
-5
-1
4
3

Answers

Answer:

0.75

Step-by-step explanation:

what is -25 + - 14 + 3

Answers

Answer:

- 36

Step-by-step explanation:

-25 - 14 + 3     Notice that +-14 reduces down to - 14. The answer becomes       -39 + 3 = - 36

what is 7x+3(8x-7) I need it in standard form

Answers

Answer:

31x-21

Step-by-step explanation:

Distribute:7x+24x-21

Add like terms:31x-21

Answer:31x-21

the answer is 31x-21

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