Question
Daniel expanded the expression as shown. What errors did he make? Select three options.
[tex]-2(-8x-4y+3/4)=-10x-8y-1 \frac{1}{4}[/tex]
A. The first term should be positive.
B. The second term should be positive.
C. The last term should be -1 1/2, not -1 1/4.
D. He divided -8 by -2 instead of multiplying -8 by -2.
E. He did not simplify the expression completely.
Answer:
Daniel's errors are (a), (b) and (c)
Step-by-step explanation:
To do this, we only need to solve the expression on the left.
So, we have:
[tex]-2(-8x-4y+3/4)=[/tex]
Open bracket
[tex]-2(-8x-4y+3/4)=-2 * -8x -2 * -4y - 2 * 3/4[/tex]
[tex]-2(-8x-4y+3/4)=16x + 8y - \frac{2 * 3}{4}[/tex]
[tex]-2(-8x-4y+3/4)=16x + 8y - \frac{6}{4}[/tex]
[tex]-2(-8x-4y+3/4)=16x + 8y - 1\frac{1}{2}[/tex]
From the expression, we can see that:
The first term is positiveThe second is also positiveAnd the third term is[tex]- 1\frac{1}{2}[/tex]So, Daniel's errors are (a), (b) and (c)
I need help please ):
Answer:
yes, 3:4
Step-by-step explanation:
The ratio of the side lengths is 6:8 and 18:24 both of which simplify to 3:4
A new road was added near Riana's neighborhood. The road is 5 miles long, and the city plans 1/10 to place a streetlight every mile. There already is a streetlight at the beginning of the new road. How many streetlights will be placed on the new road?
Answer:
= 49
Answer.
Step-by-step explanation:
Solution:-
Length of the road = 5 miles
Distance between every two streetlights = 1/10 miles
Total number of streetlights placed on the new road = 5 ÷ 1/10
= 5*10
= 50 streetlights
As there is already a streetlight at the beginning of the new road, so the number streetlights will be = 50 - 1
Answer:
49 is correct answer
Step-by-step explanation:
please mark me as brainliest
Please help me with this question 14 + what = 6
Answer:
-8
Step-by-step explanation:
14 + x = 6
6 - 14 = -8
brainliest plz
b) After allowing 16 % discount on the marked price of an article and levying 13 % value
added tax, the price of the article becoipes Rs 9,492. Find the value added tax.
Answer:
135.15
Step-by-step explanation:
let SP be x
sp with vat=sp + vat % of sp
9492=x+13/100*x
x=1039.6
vat=vat% of sp
=13/100*1039.6
=135.15
If the initial velocity stays the same, but the height the projectile is launched from changes , how would the amount of time change that it takes for the projectile to reach its maximum height? How would its maximum height change?
Answer:
Part A
The height to which the projectile reaches is given by the following formula;
[tex]\Delta y = y-y_0 = v_{0y} \times t-\dfrac{1}{2} \times g \times t^2[/tex]
Where;
[tex]v_{0y}[/tex] = The initial velocity of the projectile = Stays the same
y = The height the projectile reaches
y₀ = The height from which the projectile is launched
g = The acceleration due to gravity
t = The time taken
Given that the projectile has the same initial velocity, the variation of Δy with time, 't', will be the same when the project is launched from a different height, and the time change that it takes for the projectile to reach the maximum height will be the same for the previous launch height
Part B
From the change in eight of the projectile, Δy = y - y₀, the maximum height reached, 'y', is therefore given as follows;
y = Δy + y₀
The maximum height will increase by 'y₀', where 'y₀' is the difference between new height and the previous height, [tex]y_i[/tex]
That is, if y₀ > [tex]y_i[/tex], the maximum height reached increases and if y₀ < [tex]y_i[/tex], y₀ will be added as y = Δy - y₀ and the maximum height reached decreases
Step-by-step explanation:
The cylindrical canister of a fire extinguisher
has a diameter of 4 inches and is 12 inches
high. About how many square inches of
metal (total surface area) would be needed
to manufacture one fire extinguisher?
Step-by-step explanation:
2*22/7*48=301.714 .This the answer
Answer:
Yeah, what they said above.
Step-by-step explanation:
ill mark brainlist plss help
A sum of was to be shared among three sidlings rambo nikita and kimroy in the ratio 3:7:9 if nikita and kimroy $2500 more than rambo evaluate the sum of money kimroys share
Answer:
Step-by-step explanation:
A sum of was to be shared among three sidlings rambo nikita and kimroy in the ratio 3:7:9 if nikita and kimroy $2500 more than rambo evaluate the sum of money kimroys share
This question is incomplete. It lacks the amount of money that the 3 siblings share
I need help asap thank you
Answer:
Thisis your answer ☺️☺️☺️
A manufacturer of flea collars for animals injects the collars with 15 milligrams of a medicine that only acts on fleas. The manufacturer will only sell collars with 14 milligrams and no more than 16 milligrams of medicine. The following list shows the result of sampling 36 collars from an actual production run of 720 collars. A) Based on this sample, what percent of the collars would be acceptable? Explain how you got your answer. B) Based on this sample, how many collars would you expect the manufacturer to reject?
Answer:
you add50 then subtracts 50 and yea thats the answer
Step-by-step explanation:
What is the surface area of the rectangular prism?
36 cm²
108 cm²
72 cm ²
54 cm²
Answer:
SA = 108cm² (the 2nd option)
Step-by-step explanation:
h = 4
l = 3
w = 6
SA = 2(lw + lh + wh)
SA = 2((3)(6) + (3)(4) + (6)(4))
SA = 2(18 + 12 + 24)
SA = 2(54)
SA = 108cm²
The surface area of the rectangular prism is 108cm².
Calculation of the surface area of the rectangular prism:Since
height = 4
length = 3
width = 6
So, here the surface area is
SA = 2(lw + lh + wh)
= 2((3)(6) + (3)(4) + (6)(4))
= 2(18 + 12 + 24)
= 2(54)
= 108cm²
hence, The surface area of the rectangular prism is 108cm².
Learn more about area here: https://brainly.com/question/24591736
Find the difference.
- 4 1/9 - 7 2/3
**Answer should be a fraction**
Answer:
your answer is
[tex] - 11 \frac{7}{9} [/tex]
Can someone help me with this ( pls don't use links) the first one who answers this gets 5 stars
Answer: 4 = 90
Step-by-step explanation:
90
Answer:
1. 135° = obtuse angle
2. 245° = Reflex angle
3. 62° = acute angle
4. 110° = obtuse reflex angle
In ASTU, S = 98 inches, t = 92 inches and u=70 inches. Find the measure of angle u the nearest 10th of a degree.
Answer:43.1
Step-by-step explanation:delta math
What is the standard form equivalent of (x + 5)(2x +4)?
Answer:
2x²+14x+20
Step-by-step explanation:
What are the rules of exponents?
PLS HELP ME I WILL GIVE YOU BRAINLIEST!
A kid at the bus stop is tossing a coin. He tosses the coin 19 times and it lands on heads eight times. If the kid tosses the coin an 20th time, what is the probability that it will land on heads?
Answer:
I honestly dont know
Step-by-step explanation:
Need help :::::::::::::::::
Answer:
2/3
Step-by-step explanation:
First, we read the two points with circles off the graph.
They are (-4, -5) and (5, 1).
slope = (y2 - y1)/(x2 - x1) = (-5 - 1)/(-4 - 5) = -6/(-9) = 2/3
Answer: 2/3
Help
I costs $50 to make 10 calculators
Answer: so but 10 calculators
Step-by-step explanation:
Jiro borrows $48000 from a bank that charges simple interest at a rate of 6% per year. Find the total amount of money he has to pay the bank at the end of 2 years.
Answer:
$53760
Step-by-step explanation:
Rui Feng borrows $48 000 from a bank that charges simple interest at a rate of 6% per annum.
Now, we have to calculate the total amount he has to pay the bank at the end of 2 years.
Now, using the formula of simple interest the total amount after 2 years will be
dollars. (Answer)
help me asap please :)
Find the measure of segment `DE.`
Answer:
DE=24
Step-by-step explanation:
We can see clearly that the two angles, angle A and angle F are congruent with one another, and since they are, we know the two triangles are shifted in a growth, not in an adjustment of angles. the hypotenuse doesnt matter, what does matter is the 5 and the 10, clearing showly the transition of Triangle ABC to Triangle DEF is times 2. Therefore, 12 times 2 is 24.
Answer:
Step-by-step explanation:
segment DE is what we want to find
notice that the two triangles are similar, similar here just means one is an exact copy of the other, except for scale. One is an exact scale copy of the other. sooooo we can make some scaling of one side of one.. to the same side of the other. here we want DE so .. see that BC is the same side on the other , smaller triangle?
now notice AB on the small triangle and FE on the bigger one... sooo just by observation we can see, that the bigger triangle is 2X bigger than the small one , b/c 5 * 2 = 10 . 5 is the AB side of the smaller triangel and 10 is the same side but on the bigger triangle and 2 is our scaling factor.. got it?
So do the same on BC to find DE
12 * 2 = DE
24 = DE
see? :)
Leticia is a physical therapist. She charges $220 home-visit fee and $60 per hour, with the first hour free. Which equation could you use to calculate the cost, c, to have Leticia give you physical therapy at your home for h hours?
Answer
c=$220+($60h-$60)
Answer:c = 220 + 60(h-1)
Step-by-step explanation:
What is the multiplicative identity of the complex number 4 + 8i
Answer:
1
Step-by-step explanation:
when you multiply an complex number by its multiplicatuive identity, in case 4+8i, you would multiply both the top and the bottom by 4-8i which is actually the value one since we cannot actually change the whole value of the number. By multiplying it by 1 and we get the same value without the imaginary number
(sorry if this doesn't make sense but I hope it helps)
about that did you forget to put -4 + 8i just to make sure about it because I am not sure if you forget it or not just making sure
Answer:
1
Step-by-step explanation:
Write an equation in slope intercept form from two points (5,5) and (3,7)
Answer:
y = -x + 10
Step-by-step explanation:
find the slope (-1) and y intercept (10)
Hope this helped! Have a nice day! Plz mark as brainliest!!!
-XxDeathshotxX
Answer:
Step-by-step explanation:
(5,5) and (3,7)
so
(5-7)/(5-3)= -2/2=-1
so the slope is -1
y=-1x+10
Noah says that 9x−2x+4xis equivalent to 3x, because the subtraction sign tells us to subtract everything that comes after 9x.
Elena says that 9x−2x+4xis equivalent to 11x, because the subtraction only applies to 2x.
Who is correct? And why are they correct?
Group of answer choices
Elena
Noah
Help me out please an thank you
Given:
The graph of a parabola.
To find:
The equation of the parabola.
Solution:
From the given graph, it is clear that the vertex of the parabola is at point (0,0) and it is a horizontal parabola.
The general equation of a horizontal parabola is:
[tex]x=ay^2[/tex]
Where, a is a constant.
If a<0, then the parabola opens left and if a>0, then the parabola opens right.
Equations in options B and D are of the form [tex]x=ay^2[/tex] but a<0 in option B and a>0 in option D.
In the given graph the parabola opens right, so the value of a mus be a positive number. So, the required equation is:
[tex]x=\dfrac{1}{6}y^2[/tex]
Therefore, the correct option is D.
what is the average monthly ranfall?
which of the following trigonometric expressions are equal? a. sin(theta) b. cos(theta)tan(theta) c. 1/sec(theta) d. csc(theta) (1-cos^2(theta))
Answer:
A & B
Step-by-step explanation:
cos(theta)tan(theta) can be expressed as;
cos(theta)tan(theta) = cos(theta) × (sin(theta))/cos(theta).
cos(theta) cancels out to give; sin(theta)
Thus is equivalent to option A
What are the coordinates of the point?
(−4, −2)
(−2, 4)
(2, 4)
(4, −2)
Answer:
-2,4 is the answer x,y is the formula
Answer:
hey if I can get some of your social network to send you homework, they won't here?
