Answer:
7xy + 2x²t
Explanation:
5xy - x²t + 2xy + 3x²t
= (5xy + 2xy) + (3x²t - x²t)
= 7xy + 2x²t
What is the inverse of the function f(x) = 2x - 10?
Answer:
[tex]\huge\boxed{f^{-1}(x)=\dfrac{1}{2}x+5}[/tex]
Step-by-step explanation:
[tex]f(x)=2x-10\to y=2x-10\\\\\text{exchange x to y and vice versa}\\\\x=2y-10\\\\\text{solve for}\ y\\\\2y-10=x\qquad|\text{add 10 to both sides}\\\\2y-10+10=x+10\\\\2y=x+10\qquad|\text{divide both sides by 2}\\\\\dfrac{2y}{2}=\dfrac{x}{2}+\dfrac{10}{2}\\\\y=\dfrac{1}{2}x+5[/tex]
Please help me with these four questions and thanks
Answer:
number 21 should be adding the 28 to the 375 not subtracting it. the student didn't use inverse operation.
#19 should be A
#20 should be D
Step-by-step explanation:
A band is planning a concert at a local theater. The graph below shows the ticket sales per hour.
What is the slope of the line shown in the graph?
A.
-400
B.
-250
C.
-2,000
D.
-1,500
Answer:
i know its c
Step-by-step explanation:
i had this question yesterday
Answer:
the slope is -400
Step-by-step explanation:
In order to find the slope, we must use the slope equation
m=[tex]\frac{y_2-y_1}{x_2-x_1}[/tex]
where it was considerated 2 points of the line, i.e.,
(x_1,y_1) and (x_2,y_2)
In this case, we observe that there are 2 "easy" points,
(x_1,y_1)=(0,4000) and
(x_2, y_2)=(10,0)
By substituying these point in the slope equation, one has
m=[tex]\frac{0-4000}{10-0}[/tex]
m=[tex]\frac{-4000}{-10}[/tex]
Hence, m=-400.
Please someone help me
m=69 miles
you can find this because if you divide the 9 by 6 as they are matching sides you get 1.5, take that number and multiply it by the 46 and get the 69! hope that helps :D
What is the value of x?
Answer:
X=53°+45°=98°
( BEING EXTERIOR ANGLE OF A TRIANGLE IS EQUAL TO THE SUM OF INTERIOR ANGLES)
Answer:
Value of x is 118 in the morning
3.) 4+(15+26)=(4+15)+26
Answer:
90 Hope this helps! Please consider marking brainliest.Step-by-step explanation:
Use pemdas:
(15+26)=41
(4+15)=19
Rewrite the question: 4+41+19+26= 90
90(2+5i) - (-6+3i)
and please show work
Answer:
(i = 1)
Step-by-step explanation:
(2+5i) - (-6+3i)
(2+5i) + (6+3i)
(2+6=8) and (5i+3i=8i)
8i = 8
_____
8 8
(i = 1)
(3-21)-(7+6) =
subtract complex numbers
Answer:
(3-21)-(7+6) = -31
Step-by-step explanation:
3-21 = -18 - 13= -31
whats the slope of 10x+4y=-20
Answer:
In Explanation
Step-by-step explanation:
First, you should put the equation in slope intercept form (y = mx + b), where m is the slope.
10x + 4y = 20
Isolate the y term
10x + 4y – 10x = 20 – 10x
4y = 20 – 10x
Rearrange the terms
4y = –10x + 20
Divide both sides by 4
4y4=−10x+204
y=−104x+5
The slope of the given line is –10/4. A perpendicular line will have a slope with the opposite reciprocal. In simpler terms, you flip the slope and change the sign, therefore, the opposite reciprocal is 4/10.
Given the equation y = (1/4)x - 5, what is the zero? Only write the number please
Answer:
so the zero is (20,0) but just so you know you can go to desmos and it will answer all of your graphing questions.
Step-by-step explanation:
can you please give me brainliest? I would appreciate it soooo much! I just need one more!
Like y'all is so nice for helping me because this work is so hard so can yall help me and i will give barinlest☺️
Answer:
The answer is A I hope it’s right
Step-by-step explanation:
405-319=86
Kayla is give a monthly allowance. She puts 40% of the money directly into her savings account. She spends $15 at the movies with her friends. At the end of the month, she has $3 left. How much is her monthly allowance?
Heloooooppppo
Question 2 of 10
What happens when a country's central bank increases reserve requirements
for banks?
A. Banks are forced to set aside more of their money instead of
lending it.
B. Banks must pay the government interest on all cash they keep on
hand.
C. Banks must pay a higher interest rate to borrow money from the
government
D. Banks are required to sell all of their treasury securities on the
open market
SUBMIT
Answer: Banks are forced to set aside more of their money instead of lending it.
When the country's central bank increases reserve requirements
for banks so here bank should be forced for setting aside.
What are reserve requirements?It is the amount of funds where the bank should hold the reserve to ensure for meeting out the liabilities when the withdrawals should be done. It is applied by the central bank to rise or reduce the money supply and impact the rate of interest.
Hence, When the country's central bank increases reserve requirements
for banks so here bank should be forced for setting aside.
Learn more about rate here: https://brainly.com/question/14565608
does 15/21 and 40/56 form a proportion
Answer:
No, 15/21 and 40/56 do not form a proportion.
Step-by-step explanation:
Which one should I choose
Answer:
its the last one
Step-by-step explanation:
the sign flips when you divide by a negative
9514 1404 393
Answer:
z ≥ 3
Step-by-step explanation:
When you divide by the negative coefficient of z, you reverse the inequality symbol:
-8z ≤ -24
z ≥ -24/-8 . . . . divide by -8
z ≥ 3
This graphs as a solid dot at 3, with the line extending to the right (to greater values).
Which unit rate is the lowest price per ounce? (5 points)
Choice A: 25 ounces of potato chips for $3.49
Choice B: 45 ounces of potato chips for $4.79
a
Choice A
b
Choice B
c
The unit rates are equal.
d
The unit rates cannot be determined.
Answer:
B)
Step-by-step explanation:
A 25 ounce bag would cost about 14 cents per oz and the 45 ounce bag would cost about 11 cents per oz
A cyclist travels 10 km from home to the park.
She leaves home at 12:20 and arrives at the park at 12:50.
What is her average speed in km/h?
Answer:
20 km/h
Step-by-step explanation:
the total time is 0.5 hours as the cyclist travels for 30 minutes
the formula for speed is distance travelled divided by time taken which gives us 20 km/hr
What is the slope between these two points?
(6,10) (8,3)
Answer:
the slope of the two points is [tex]-\frac{7}{2}[/tex]
Step-by-step explanation:
to find the slope of two points you have to subtract them (x1,y1), (x2,y2)
Steps:
[tex](X_1,Y_1) (X_2, Y_2)[/tex]
[tex]\frac{3 - 10}{8 - 7} = -\frac{7}{2}[/tex]
The diameter of a circle measures 32 ft. What is the circumference of the cirle? Use 3.14 for n, and do not round tour answer. Be sure to include the correct unit in your answer.
Step-by-step explanation:
circumference=
π*d
3.14x32
=100.48
HELP!! Please, I'll give the first person to get it right a brainliest!
0.8/y =2: 3/4
Answer:
0.291 is the closest
Step-by-step explanation:
ok so 0.8/y=2 3/4
first of all turn it into a decimal
2 3/4= 2.75
2.75=0.8/y
0.8/?=2.75
help me plz ok thank you
Answer:
If there is no 48 divided by 8 then it is 8 x _ = 48.
Step-by-step explanation:
Think about it. There are 6 times more children than adults *6 x 8 = 48.
Answer:
8 x______=48
Step-by-step explanation:
In the problem, they are telling you there are 48 children and 8 adults at the library. Then, they tell you how many times more adults than children are at the library. You aren't adding, and since they are saying times more, that is a sign of multiplication. Hope this helps!
8th one answer this pls
Answer:
terminating
Step-by-step explanation:
if the given fraction is terminating then prime factors of denominator should be 2^n x 5^m where m and n are whole number
5=1x5=2^0x5^1
so it is of form 2^nx5^m
simplify 5a+7b-12a+6c-13b-22a+53c
Answer:
−29−6+59
Step-by-step explanation:
what is the slope between (0,-2) and (1,1)
Answer:
The slope would be 3
Step-by-step explanation:
Lmk if you need an explanation
Which of the following equations is written in factored form?
O y= 2x² + 3x – 8
o y= 3 (2 + 5) (2 – 2)
o y=-2(1 + 5)2 – 2
O y = 3.2 - 5
Need help please!!
Answer:
Option B is correct option.
Step-by-step explanation:
We need to identify equations written in factored form.
Factored form: A factored form of expression is an expression broken down into a product of its factors.
In the given options A, C and D we don't have product of factors.
Only option B consists of product of factors.
So, Option B is correct option.
18- 8x = 8 + 3(1 - 3x)
Work shown please!
Answer
7 = -x
Step-by-step explanation:
18- 8x = 8 + 3(1 - 3x)
18- 8x = 8 +3-9x
18- 8x = 11 - 9x
7- 8x = -9x
7 = -x
Answer:
x=-7
Step-by-step explanation:
step by step in picture.
Find the area of a triangle with sides of length 7 and 9 and included angle 72 degree.
Answer:
A = 29.96
Step-by-step explanation:
Area of a triangle
Side Angle Side (SAS) Method :
Given a triangle with two known sides a and b, and their included angle C, the area can be calculated as follows:
[tex]\displaystyle A=\frac{a.b.\sin(C)}{2}[/tex]
The triangle has sides of lengths a=7 and b=9 and their included angle is C=72°. Substituting:
[tex]\displaystyle A=\frac{7\cdot 9.\sin(72^\circ)}{2}[/tex]
A = 29.96
1. 9x - 2 + 7 - X
Terms
Like Terms
Answer:
Hi I can help!!
Step-by-step explanation:
1. Collect like terms.
9x-X+(-2+7)9x−X+(−2+7)
2. Simplify.
9x-X+59x−X+5
3. Get the final answer 8x-9
If I have a circle that is 12 in in diameter and it's cold and a half and then folded in half again what is the area of the resulting shape and what is how do I write out the equation
Answer:
A= πr^2/4Step-by-step explanation:
Step one:
given data
diameter of circle= 12 in
the radius is r=d/2=6in
the area of the circle is
A=πr^2
A=3.142*6^2
A=3.142*36
A=113.1in^2
If the circle is folded in half, the area will be A/2= 113.1/2= 56.55in^2
In the corresponding shape is folded again the area is A/4= 28.3in^2
The expression for the last shape is
A= πr^2/4
Determine the area of squre ABCD with AB=3cm
Answer:
Area: [tex]9 cm^{2}[/tex]
Step-by-step explanation:
Since all sides of a square have equal lengths, the area of the square is [tex]a^{2}[/tex] (a = length of a side).
Since the length of the side of the square is given (is 3cm), the area of the square is [tex](3cm)^{2}[/tex] = [tex]9cm^{2}[/tex]
Answer:
9
Step-by-step explanation:
3 by 3 is 9