Answer:
Step-by-step explanation:
12
can someone help me with this
−2(7−y)+4=−4
Simplify −2(7−y)+4.
2y−10=−4
Move all terms not containing y to the right side of the equation.
2y=6
Divide each term by 2 and simplify.
y=3
When they distributed the 2 they did -2×y but it was supposed to be -2×-y, which equals a positive 2y
Hope this helps! :) Plz mark as brainliest!
. You and a friend have dinner at a restaurant . Your meal costs $15.85 and you leave an 18% tip and your friend's meal cost $14.30 and he leaves a 20% tip and 6 % sales tax who spent more on the bill he or she
Answer:
I slightly rounded my answers so to the nearest hundred.
You Did.Your bill is 19.65
Their bill is 18.02
Step-by-step explanation:
-5(x - 10) = -35, figure out what x is
[tex]\text {Hey! Let's Solve this Problem!}[/tex]
[tex]\text {\underline {The First Step is to Simplify the Equation}}[/tex]
[tex]\text {Before: -5(x-10)=-35}[/tex]
[tex]\text {After: -5x+50=-35}[/tex]
[tex]\text {\underline {The Next Step is to Subtract 50}}[/tex]
[tex]\text {-5x+50-50=-35-50}[/tex]
[tex]\text {Your New Problem Is: -5x=-85}[/tex]
[tex]\text {\underline {The Final Step is to Divide -5}}[/tex]
[tex]\text {-5x/-5=-85/-5}[/tex]
[tex]\text {Your Answer Would Be:}[/tex]
[tex]\fbox {x=17}[/tex]
[tex]\text {Best of Luck!}[/tex]
Answer:
17
Step-by-step explanation:
-5 (x - 10) = -35
-5x + 50 = -35
-5x = -35 - 50
-5x = -85
x = 17
Hopefully this answer helps you :)
What is the additive Inverse of 3 1/4
Answer:
the answer is -3 1/4
Step-by-step explanation:
The additive Inverse of 3 1/4 will be - 3 1/4.
What is inverse of a function?Suppose that the given function is [tex]f:X\rightarrow Y[/tex]
Then, if function 'f' is one-to-one and onto function (a needed condition for inverses to exist), then, the inverse of the considered function is
It simply means, inverse of 'f' is undo operator, that takes back the effect of 'f'
We are given the number as;
3 1/4 = 13/4
Therefore, the additive Inverse of 3 1/4 will be;
Negative 13/4 = - 3 1/4
Hence, the additive Inverse of 3 1/4 will be - 3 1/4.
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Deb has 3/4 of a brownie. She wants to divide it up into 1/8 of a brownie so she can have it throughout the day. How many 1/8s will she have
's will she have?
which table represents a function?
Answer:
First table
Step-by-step explanation:
It will be the first table as on the other ones there is two of the same X
What the volume of the figure
Answer:
1,530
Step-by-step explanation:
box 1 (left one): 10*9*9=810
box 2 (right one): 18*4*10=720
720+810=1,530
Answer:
1530 cm^3
Step-by-step explanation:
They are two Rectangular Prism.
prism 1.
length l = 18 cm
width w = 10 cm
height h = 4 cm
diagonal d = 20.976177 cm
total surface area S_tot = 584 cm^2
lateral surface area S_lat = 224 cm^2
top surface area St_op = 180 cm2
bottom surface area S_bot = 180 cm^2
volume V = 720 cm^3
Prism 2.
length l = 10 cm
width w = 9 cm
height h = 9 cm
diagonal d = 16.1864141 cm
total surface area S_tot = 522 cm^2
lateral surface area S_lat = 342 cm^2
top surface area Stop = 90 cm^2
bottom surface area Sbot = 90 cm^2
volume V = 810 cm^3
Add 720 cm^3+810 cm^3 = 1530 cm^3
Agenda: l = length
w = width
h = height
d = diagonal
S_tot = total surface area
S_lat = lateral surface area
S_top = top surface area
S_bot = bottom surface area
V = volume
Formula: Volume of Rectangular Prism: V = lwh
__x2/3<2/3 choose all of the numbers that make the statement true.
A. 2/3
B.3/4
C.3/2
D.1/3
E.4/3
Answer:
Step-by-step explanation:
A
I tried solving it and I didn’t get the right answer can someone explain to me
Answer:
X=29°
Step-by-step explanation:
Since triangles ABC and DEC are congruent, Angle A = Angle D = 74°
Sum of all angles in a triangle is 180°
So, Angle A + Angle B + Angle C =180°
74°+2X+48°=180°
2X=180°-122°
2X=58°
X=29°
======================================================
Explanation:
When it comes to congruence statements like this, the order of the letters is important. This is so we pair up the letters properly.
ABC has A first, B second, C third
DEC has D first, E second, C third
So we have these pairings
A pairs with DB pairs with EC pairs with C (ie it pairs with itself)Which leads to
A = DB = EC = CDue to the fact that congruent triangles have congruent corresponding parts.
Since B = E and B = 2x, we can say that E = 2x by either substitution or the transitive property. Both effectively say the same thing.
---------------------------
Now focus on triangle CDE
The three angles we have are
C = 48D = 74E = 2xThose three angles add to 180. This is true for any triangle.
C+D+E = 180
48+74+2x = 180
122+2x = 180
2x = 180-122
2x = 58
2x = 58/2
x = 29
--------------------------------
Side note: since x = 29, this means angle B = 2x = 2*29 = 58, and this is the measure of angle E as well.
We can check the answer by doing C+D+E = 48+74+58 = 180. So we have confirmed the answer.
9 + 8 × 3 - (5 × 2)=?
Answer:
23
Step-by-step explanation:
Hope this helps
Answer:
23
Step-by-step explanation:
9 + 8 × 3 - (5 × 2)
9 + 8 × 3 - (10)
9 + 24 - 10
33 - 10
23
a dealership sets car prices so there is 40% profit. If a dealership paid 5,300 for a car how much should they sell the car?
what is 360 times 345
Answer:
124200
Step-by-step explanation:
i think this is the answer
Answer:
124200
Step-by-step explanation:
What value goes in cell B?
Answer:
Question incomplete
Step-by-step explanation:
Which statements about f(x) = −(x − 7)2 + 4 are true?
Select all that apply.
Answer:
x=9
Step-by-step explanation:
f(x) = −(x − 7)2 + 4
(substitute f(x) = 0)
0= −(x − 7)2 + 4
(distribute 2 into brackets)
0= −(2x - 14) + 4
(remove brackets and change the sign of each expression inside the brackets)
0= - 2x + 14 + 4
(add the numbers)
0= - 2x + 18
(move variable to the other side and change its sign)
2x = 18
(divide both sides by 2)
x = 9
The given expression is quadratic, parabolic graph, relative maxima and real zeros. The correct options are (a), (c) and (f).
What is a quadratic equation?The general form of a quadratic equation is given as ax^2 + bx + c = 0.
Here, a ≠ 0 and b and c are integers.
The degree of a quadratic equation is 2.
The given expression is f(x) = -(x - 7)² + 4
Since the degree of the expression is 2, it is quadratic.
The graph of the given equation will be parabolic.
By comparing from the general vertex form (x - h)² + k, its vertex can be found as (7, 4).
Axis of symmetry is x = 7.
y-intercept can be obtained by plugging x = 0 as,
-(0 - 7)² + 4 = 53.
Maxima or minima can be found as below,
f'(x) = 0
⇒ -2(x - 7) = 0
⇒ x = 7
In order to find the solution write the expression as follows,
-(x - 7)² + 4 = 0
⇒ -x² + 14x - 49 + 4 = 0
⇒ x² - 14x + 45 = 0
⇒ x = 5,9
Thus, the equation has real solutions.
Hence, the properties of the given equation are derived as quadratic, parabolic graph, relative maxima and real zeros.
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Each prize for a carnival booth costs $0.32. How many prizes can you buy with $96?
Answer: 96 divided by 0.32 is 300, so it's 300.
Zoe writes several checks to pay bills. This leaves her with a balance of -$27. She then goes to the bank and deposited $27 into her checking account. What is zoe's new account balance
Answer:
0$
Hope this helped ;)
Answer:It would be -54
Step-by-step explanation:
Because you deposited money into the account so you will add -27 and 27 to get -54.
What is (5y)^2 answer hast to have a y with the determination
Answer:
25y^2
Step-by-step explanation:
52nd term of the sequence 2,6,10,14,
Answer:
210
Step-by-step explanation:
You can multiply 52 by 4 which is 208.
Next, you can add that to the number 2 which is 210.
Hope this Helps!!! :)
1. Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified line, using the disk/washer method. Sketch the region, the solid, and a typical disk or washer. (6.25 points)
Answer:
hello your question is incomplete attached below is the missing part of the complete question
y = (x - 2)^2 ; y=2x-1 ; about the line y = -1
answer : [tex]\frac{1408}{15} \pi[/tex]
Step-by-step explanation:
Attached below is a detailed solution of the problem above and the sketch of the region
The volume of the solid is bounded by this curves
y = (x - 2)^2 and y=2x-1
Contestants on a game show earn different
. Sammy has two more baseballs than his brother Ethan. Write an EXPRESSION to describe the scenario.
Answer:
[tex]s = e + 2.[/tex]
Step-by-step explanation:
[tex]let \: sammy \: be : s \\ let \: his \: brother \: be : e \\ then \: the \: required \: expression \: is : \\ s = e + 2.[/tex]
♨Rage♨
If f(x) = x/2 + 8, what is f(x) when x = 10?
Answer:
13
Step-by-step explanation:
All ya gotta do is replace the x value with 10. So it would look like this,
f(x) =10/2 + 8
f(x) = 5 + 8
f(x) = 13
Hope that helps and have a great day!
(if you want me to explain more lemme know!)
Answer:
well i would say just add ten
Step-by-step explanation:
Use intercepts to graph the linear equation 3x-y=-5
In Denver, 20% of the days each year are rainy (assume it's a normal year with 365
days).
How many days are rainy days per year? Round to the nearest day if needed.
73 days
20 days
18 days
70 days
Answer: 73
Step-by-step explanation:
How many ways are there to pick a selection of coins from $1 worth of identical pennies, $1 worth of identical nickels, and $1 worth of identical dimes if
Answer:
4 ways
Step-by-step explanation:
Pennies,Nickles,Dimes,and Quarters
Which pair of quantities for a proportional relationship select all that apply
Answer:
Which two ratios represent quantities that are proportional?
Ratios are proportional if they represent the same relationship. One way to see if two ratios are proportional is to write them as fractions and then reduce them. If the reduced fractions are the same, your ratios are proportional.
Step-by-step explanation:
Can u please answer my recent question!!!!!
Solve the system by substitution. You must show your work.
-2.5x + y = 13.5
2.25x - y = -12.25
Answer: (-5,1)
Step-by-step explanation:
−2.5x+y=13.5
−2.5x+y+2.5x=13.5+2.5x(Add 2.5x to both sides)
y=2.5x+13.5
Step: Substitute
5x+13.5 and 2.25x−y=−12.25:
2.25x−y=−12.25
2.25x−(2.5x+13.5)=−12.25
−0.25x−13.5=−12.25(Simplify both sides of the equation)
−0.25x−13.5+13.5=−12.25+13.5(Add 13.5 to both sides)
−0.25x=1.25
−0.25=1.25−0.25(Divide both sides by -0.25)
x=−5
Step: Substitute−5forxiny=2.5x+13.5:
y=2.5x+13.5
y=(2.5)(−5)+13.5
y=1(Simplify both sides of the equation)
Answer:
x = -4, y = 3.5
Step-by-step explanation:
-2.5x + y = 13.5 ------ (1)
2.25x - y = -12.25 ---(2)
you can substitute (1) into (2) or vice versa
We are going to substitute (2) into (1)
but first we have to rewrite it in terms of x or y
Lets do y
from (2), (after subtracting -2.25x from both sides), y = 12.25 + 2.25x ----(3)
plug in (3) into (1)
-2.5x + (12.25 + 2.25x) = 13.5
-2.5x + 12.25 + 2.25x = 13.5
-2.5x + 2.25x = 13.5 - 12.5
-0.25x = 1
x = -(1/.25)
x = -4
Now we have x
We already used (2), lets plug in x = -4 into (1)
-2.5(-4) + y = 13.5
10 + y = 13.5
y = 13.5 - 10
y = 3.5
The measure of angle Q is 70 degrees. Find the measure of angle P.
Answer:
40 degrees
Step-by-step explanation:
It would be 40 degrees because every triangle will add up to 180 degrees. Angle Q and R are equal (pulled from the sign that the two lines from P are equal) So 180 - 70 = 110 - 70 = 40
The measure of angle P is 55 degrees.
The given image is an isosceles triangle. An isosceles triangle is a three sided polygon that has two equal angles. Angles in a triangle add up to 180 degrees.
The triangle is an isosceles triangle because of the two lines on the triangle.
<p + <r + <q = 180 degrees
70 + <r + <q = 180
<r + <q = 180 - 70
<r + <q = 110
<r + <q = 110/2 = 55
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Consider the population of electric usage per month for houses. The standard deviation of this population is 128 kilowatt-hours. What is the smallest sample size to provide a 90% confidence interval for the population mean with a margin of error of 30 or less
Answer: 50
Step-by-step explanation:
Formula for sample size(n) if population standard deviation [tex](\sigma)[/tex] is known:
[tex]n=(\dfrac{\sigma\times z_c}{E})^2[/tex] , E = Margin of error , [tex]z^c[/tex] = Critical z-value
As per given,
[tex]\sigma= 128[/tex] kilowatt-hours.
Critical z-value for 90% confidence = 1.645
E = 30
Required sample size : [tex]n=(\dfrac{128\times1.645}{30})^2=(7.01867)^2[/tex]
[tex]=49.2617285689\approx50[/tex]
Hence, the smallest sample size to provide a 90% confidence interval for the population mean with a margin of error of 30 or less = 50
Will give a brainiest to the person who answers this problem thanks!!
EASY
Answer:
Domain: [-4,4]
Step-by-step explanation:
Domain is representative of the space on the graph that x occupies. Because all the points are closed, there should be closed or inclusive brackets outside of the domain. Because the lowest inclusive point is -4, that should be the first domain point. The graph continues until -2, where that line stops, but the second line begins at -2, so we include this point too, and there is no need to mention it in the domain. The second line ends at 4, so that is the highest end of the domain and would be the second domain point. Therefore the domain is [-4, 4]. Remember to keep closed brackets because of the closed points.