Gina shows the steps she took to find the solution of the inequality below.
Describe the error that Gina made and write the correct solution.
19 - 2(1 – x) < 13
19 - 2 + 2x < 13
2x < -4
X > -2
Answers
Answer:
hello,2 th made from the wrong place.
because She should have distributed the -2 inside the parentheses.
the process should be like this;
19-2(1-x)<13
17(1-x)<13
17-17x<13
-17x<13-17 (17 goes to the opposite side as -17)
-17x<-4 (we divide each side by 17)
x= -4/-17
I hope you understand. There are errors in the first 2 parts of the question.
Related Questions
(04.05)
The graph of f(x) = 2x + 3 shifts 10 units to the right when it is replaced with the graph of f(x) = 2x − k. What is the value of k? (1 point)
A. 3
B. 7
C. 10
D. 13
Answers
Answer:
i think that is is 10 please make me brainliest
Step-by-step explanation:
Orders of operations
2.) 15x18+12/3+9
Answers
Answer:
283
Step-by-step explanation:
15(18) + 12/3 + 9
270 + 4 + 9 = 283
Answer:
283
Step-by-step explanation:
First, we have the equation 15 × 18 + 12/3 + 9.
If we refer to PEMDAS, division comes first, then multiplication, addition, and subtraction.
So, the equation becomes 15 × 18 + 4 + 9.
Now, we can multiply 15 × 18 in the equation.
The equation becomes 270 + 4 + 9.
4 + 9 = 13.
270 + 13 = 283.
f(x)=
−x−5
6
3
for −5
for x=−1
for −1
Answers
Answer:
77
Step-by-step explanation:
77x1=77
jhdmehhdehd
Of the 50 states, 23 have a coast that touches the ocean. What is the ratio of states that touch the ocean to states that do NOT touch the ocean?
Answers
Answer:
23 to 27
Step-by-step explanation:
_______________________________________
A motorcycle is 80 inches long. A car is 75% longer than the motorcycle.
How long is the car?
A. 60 inches
B. 120 inches
C. 140 inches
D. 155 inches
Answers
Answer:
C. 140 inches
Step-by-step explanation:
80x1.75=140
Answer:
C. 140 inches
Step-by-step explanation:
75/100 × 80 = 60 inches
car = 60 + 80 = 140
3
x. 3x²+x-3=0
Find the zeros
Answers
Answer:
The zeroes of this polynomial are [tex]x_{1} \approx 0.847[/tex] and [tex]x_{2} \approx -1.180[/tex].
Step-by-step explanation:
Let [tex]3\cdot x^{2}+x - 3 = 0[/tex], the quickest and most efficient approach to find the zeroes of this second order polynomial is by Quadratic Formula. For all [tex]a\cdot x^{2}+b\cdot x + c = 0[/tex], roots are determined by:
[tex]x_{1,2} = \frac{-b\pm \sqrt{b^{2}-4\cdot a\cdot c}}{2\cdot a}[/tex] (1)
Where [tex]a[/tex], [tex]b[/tex], [tex]c[/tex] are coefficients of the polynomial.
If we know that [tex]a = 3[/tex], [tex]b = 1[/tex] and [tex]c = -3[/tex], then roots of the polynomial are, respectively:
[tex]x_{1,2} = \frac{-1\pm\sqrt{1^{2}-4\cdot (3)\cdot (-3)}}{2\cdot (3)}[/tex]
[tex]x_{1,2} =\frac{-1\pm \sqrt{37}}{6}[/tex]
The zeroes of this polynomial are [tex]x_{1} \approx 0.847[/tex] and [tex]x_{2} \approx -1.180[/tex].
Which diagram is a net of the figure shown at the right?
Answers
Explanation
Indicate below whether the equation in the box is true or false 1/6 = to 6/12
Answers
Answer:
False
Step-by-step explanation:
Read the power and then check all that apply.
34 = 3 × 3 × 3 × 3
A power is a shorter way to write repeated multiplication.
The base is 3.
The base is 4.
The exponent is 3.
The exponent is 4.
The exponent tells you to multiply the 3 together 4 times.
The exponent tells you to multiply the 4 together 3 times.
Answers
1. The base is 3
(you are multiplying 3 four times or 3 to the power of 4 )
2. The exponent is 4
( 3 is the number you are multiplying and the exponent or 4 tells you how many times you multiply the base which is 3)
3. The exponent tells you to multiply the 3 together 4 times
( 3x3x3x3 is multiplying the number 3, 4 times)
Answer:
The answer is A,B,E, and F
Step-by-step explanation:
9.4 Qiz Setting up and solving simultaneous equations B
The total height of 4 building blocks and a flagpole on top is 23 cm.
The total height of 9 building blocks and a flagpole on top is 43 cm.
Find the height of a building block and the height of a flagpole.
Height of a building block =
cm
Height of a flagpole =
cm
Answers
Answer:
building block = 4cm
flag pole = 7 cm
Step-by-step explanation:
9b + f = 43
4b + f = 23
5b = 20
b = 4
16 + f = 23
23 - 16 = 7
f= 7
36 + 7 = 43
A gym membership is offered in January for 14.99 per month. If you pay upfront for the year, you are given a 15% discount on the monthly fee. How much money will you save after a year by paying upfront rather than monthly
Answers
Answer:
$27 approx
Step-by-step explanation:
Given data
Membership fee= 14.99 per month
for a year the fee is 14.99*12= 179.88
discount = 15%
=15/100*179.88
=0.15*179.88
=26.982
Hence for a year, you will save $27 approx
A culture started with 5,000 bacteria. After 4
hours, it grew to 5,500 bacteria. Predict how
many bacteria will be present after 13 hours.
Round your answer to the nearest whole
number.
r
P = Aekt
Enter the correct answer
DONE
I’m
Answers
Answer: After 13 (12) hours, there would be 6,500 bacteria across the culture.
Step-by-step explanation:
The bacteria grew by 500 each 4 hours, so to know how much there would be 13 hours later:
Simple, add 500 bacteria to every 4 hours until you reach 13 hours. 4 = 5.5k, 8 = 6k, 12 = 6.5k. Now, 12 is closer to 13 than anything we would've gotten if we kept going.
And there's your answer.
9x-y= 29 and 9x + y = -29
Answers
Answer:
(0,-29) x = 0, y = -29
Step-by-step explanation:
Answer:
x= - 29 over 9 - 1 over 9y, y
Step-by-step explanation:
What is the value of x to the nearest tenth?
Answers
WILL GIVE BRAINLIEST!!
Answers
Answer:
Step-by-step explanation:
The diagonal has a length equal to the square root of the sum of the three dimensions squared.
[tex]D^2=6^2+10^2+15^2\\ \\ D^2=261\\ \\ D=\sqrt{261}\\ \\ D=19cm[/tex]
if two angle are supplementary, then they have a sum of 180.is the inverse true? help me plsssssssss
Answers
6. If rls and mZ1 = 35º, what is mZ2?
2
1
S
please help!!
Answers
Answer:
55
Step-by-step explanation:
along line s, r intersects it, and you can see a right angle
90+35+angle 2 =180
you end up with 55, which is the measure
pls help me I will mark
Answers
Answer:
6
Step-by-step explanation:
Slope is going up 6 and 1 across.
Answer:
6
Step-by-step explanation:
i need help finding the shaded area!!! ILL GIVE BRAINLIEST IF THE ANSWER SEEMS ACCURATE
Answers
Answer:
15.71 cm² ....................
Answer:
39
Step-by-step explanation:
l x w
11x 5 =55m^2
22/7×5= 15,7 = 16m^2
55-16=39
Sam is younger than Jeff. Jeff is 5yers old. How old could Sam be? Enter an enteger
Answers
Answer:
any number between 0-4 so lets say 3
Step-by-step explanation:
An integer is a whole number that can be positive, negative, or zero however they can not be fractions or decimals
A TV has a length of 68 inches and a height of 51
inches. When TV's are advertised the size listed is the
diagonal length. What would be the advertised size of
this TV?
Answers
Answer:
85 inches
Step-by-step explanation:
Using pythag. A^2 + B^2 = C^2
(68*68) + (51*51) = 7225^2
Thus if you square root 7225, you get your answer - 85 inches.
A book has a front and a back and 200 pages.
The front and back cover are each 0.7 mm thick, measured to 1 decimal place.
Each page is 0.14 mm thick, measured to two decimal places.
Calculate the minimum thickness of the book.
Some working must be shown.
Answers
Answer:
28.3mm
Step-by-step explanation:
upper bound of front and back cover=0.75mm and lower bound=0.65mm
lower bound of page=0.135mm and upper bound=0.145mm
As there is a front and back cover we multiply the lower bound by 2
as there is 200 pages we multiply the lower bound by 200
(0.65*2)+(0.135*200)=28.3mm
The minimum thickness of the book will be 29.4 mm.
What is decimal place?A decimal point divides a decimal number into a whole number and a fractional component. The dot that appears between the whole number and the fractions is the decimal point.
The Upper and lower cover thickness are both 0.7 mm, respectively.
The Upper and lower thickness of the page are both 1.4 millimeters
We multiply the page thickness by two because there is a front and back cover. The page thickness is multiplied by 200 because there are 200 pages.
(0.7*2)+(0.14*200) = 29.4mm
Therefore, the thickness of the given book can not be smaller than 29.4 mm or 2.94 cm
Learn more about the decimal places here:
https://brainly.com/question/50455
#SPJ2
Write an expression equivalent to 46x + 12), and state the property you used to write it.
Answers
Answer:
2(23x+6) is correct answer
Which three lengths CANNOT be the lenghts of the sides of a triangle? A. 16m, 5m, 10m B. 15m, 11m, 10m C. 23m, 20m, 13m D. 5m, 8m, 9m
Answers
Answer:
C. 23m, 20m, 13m
Step-by-step explanation:
Hope it help
Sorry if my answer is wrong
Enter a number.
Angle 7 is equal to angle ___
T-T
Answers
Answer:
Angle 7 is equal to angle 1
The missing probability value for dr Green
Answers
Answer:
Your answer would be 0.34Step-by-step explanation:
first we add them altogether:
0.25+0.17+0.21+0.03 = 0.66
than we subtact the 0.66 from the whole (1) =
1-0.66= 0.34
Hats Off
The school's baseball team plans on selling hats for a
fundraiser. They have called two companies, who have
each given the team a quote on the cost to make hats.
One company, Flip 'Ur Lid, charges a $24 design fee
and $2 per hat.
Explain how you can calculate the cost of ordering 4
hats
Answers
Answer:
So they have a 24 dollar design fee, and 2 dollars per hat. You have to calculate the cost of 4 hats that are 2 dollars each, plus the design fee of 24 dollars
Step-by-step explanation:
An insurance company advertises that 90% of their accident claims are settled within 30 days. A consumer group randomly selects 104 of last year’s claims from the company’s files, and finds that only 89 of them were settled within 30 days. Is the company guilty of false advertising?
Answers
Answer:x
Step-by-step explanation:
Mick and Jackie buy a large sandwich to share. They each eat 2/5 of the sandwich.
How much of the sandwich is remaining?
Show your work.
Answers
Answer:
1/5 is remaining
Step-by-step explanation:
if there is two people each eating 2/5 we would just multiply 2/5 by 2 and get 4/5 then we would subtract 4/5 from 1 and get 1/5
Answer:
1/5
Step-by-step explanation:
Sandwich eaten by Mick and Jackie = [tex]\frac{2}{5}+\frac{2}{5}\\\\[/tex]
= [tex]\frac{2+2}{5}=\frac{4}{5}[/tex]
Remaining sandwich = 1/5
simplify 3xy² - 5x²y - 9xy² - 8x²y - 3x²
Answers
Answer:
-13x^2y - 6xy^2 - 3x^2
Step-by-step explanation: