Answer:
Step-by-step explanation:
3x^2 + 8x - 16 - SOMETHING = x^2 - 4
Re-arranging left and right:
SOMETHING = 3x^2 + 8x - 16 - x^2 + 4
= (3x^2 - x^2) + 8x - 16 + 4
= 2x^2 + 8x - 12
Answer:
Original expression: [tex]3x^2+8x-16[/tex]
Let [tex]a[/tex] be the quantity Amir subtracted from the original expression.
Expression after subtraction: [tex]x^2-4[/tex]
[tex]\implies (3x^2+8x-16)-a=x^2-4[/tex]
Solve for [tex]a[/tex]:
[tex]\implies 3x^2+8x-16-a=x^2-4[/tex]
Add 4 to both sides:
[tex]\implies 3x^2+8x-12-a=x^2[/tex]
Subtract [tex]x^2[/tex] from both sides:
[tex]\implies 2x^2+8x-12-a=0[/tex]
Add [tex]a[/tex] to both sides:
[tex]\implies 2x^2+8x-12=a[/tex]
Therefore, Amir subtracted [tex]2x^2+8x-12[/tex] from the original expression.
Lee says 20% of 70 is more than 70% of 20 Is Lee correct? You must show your working.
Answer:
so he would not be right, since they equal the same number.
Step-by-step explanation:
70x20%, or 70x.20=14
and
20x70%, or 20x.70=14.
please rate and mark as brainlest.
Answer:
Both are equall. 14 =14.....
Step-by-step explanation:
mark me brainly
Please help me figure out which one is greater for a b c
Answer:
A.the first one B.the second one C. the second one
Step-by-step explanation:
A. 17*10 to the power of 8 is just adding 8 zeros so it would be 1700000000 and the other is 400000000 so clearly 17 one is greater
B. 2000000 or 7839000 the second one is bigger
C. 420000000 or 850000000 the second one is bigger
The side accross the right angle is called the
hypotenuse
leg A
leg B
Step-by-step explanation:
I think you mean opposite. If so, then hypotenuse is the answer.
( How far does the tip of the minute hand of a clock move in 20 minutes if the hand is 5 inches long
Answer:
3 1/3 pi inches
Step-by-step explanation:
since we know that when 20 minutes have passed, the minute hand will have moved 4 intervals (i.e. from 12 to 4), and each interval is 30 degrees by measurement. So 4 intervals have a degree measurement of 120 degrees, which is 1/3 of the whole circle (clock). since there isn't any notation on whether pi is taken as 3.14 or 22/7 or whatsoever, you can just say that it has moved (5x2)pi x 1/3 = 3 1/3 pi inches
What is Y + 4 = -3 (x +1) in standard form?
Answer:
-3x - y = 7
first, distribute -3:
y + 4 = -3x - 3
then get x and y on the same side and the number on the other side for standard form.
add 3 to both sides:
y + 7 = -3x
subtract y from both sides:
7 = -3x - y
1. The value x = 4 is a solution to all of the following equations except which?
(1) 2x + 7 = 15
(3) x+5= 3x-3
(2) 3(x+1) = x+11
(4) x+12 = 5x - 2
Answer:
(4) x+12=5x-2
Step-by-step explanation:
Substitute x=4 in all the options to check equality
Answer:
Your answer is: 4) x+12=5x-2
Step-by-step explanation:
Hope this helped : 0
The graph shows the distance covered by a runner after a given number of hours.
The runner travels
✔ 8
miles in 2 hours.
The runner’s speed is
miles per hour
If the runner travels 8 miles in 2 hours then the speed of the runner is 4 miles per hour.
The runner traveled 8 miles in 2 hours.
To find the runner's speed, we can use the formula:
Speed (in miles per hour) = Distance / Time
In this case, the distance is 8 miles and the time is 2 hours:
Speed = 8 miles / 2 hours
= 4 miles per hour
So, the runner's speed is 4 miles per hour which means that the runner covers a distance of 4 miles for every hour they run.
To learn more on Speed click:
https://brainly.com/question/28224010
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Consider the figure. Determine the value of y.
Answer:
47+ y = 180 (linear pair)
y = 133
Which of the following values are solutions to the inequality -2> 4x-6?
Answer:
9-
Step-by-step explanation:
How do you write 6.73 in scientific notation?
Answer:
6.73 x 1[tex]0^{2}[/tex]
Step-by-step explanation:
PLEASE HELP I SWEAR I WILL GIVE BRAINLIEST PLEASEE:(:( pic included
Answer:
SoRrY i JuSt NeEd SoMe PoInTs :)
Step-by-step explanation:
if sara had 5 apples and gave 3 away how many would she have left
Answer:
2 apples
Step-by-step explanation:
These are my 5 apples... οοοοο
If I give 3 of my apples away... οο
You can see that there are 2 apples left.
5 - 3 = 2
Which two line segments represent the legs?
Answer:
WX and XY
Step-by-step explanation:
the legs are usually not the side opposite the right angle (Hypotenuse)
Are they functions or not ?
Answer:
no
Step-by-step explanation:
Is the area of a square with side length 2 inches greater than or less than the area of a circle with radius 1.2 inches?
Answer:
less
Step-by-step explanation:
We can answer the question about relative sizes of a square and a circle by finding the area of each.
__
The area of the square is ...
A = s²
A = (2 in)² = 4 in²
The area of the circle is ...
A = πr²
A = π(1.2 in)² = 1.44π in² ≈ 4.524 in²
The area of the square is less than the area of the circle.
_____
Additional comment
The area of a circle is π/4 times the area of the square in which it is inscribed. If the diameter of the circle is 1.2 times the side length of the square, its area ratio to the square will be (1.2²)(π/4) = 0.36π ≈ 1.13. That is, the circle is larger and the square is smaller.
HELP HELP HELP THANK YOU
0.6 can be written in fractions form as;
[tex]0.6 = \frac{6}{10} [/tex]
By simplifying the numeration and denominator by 2, you get;
[tex] \frac{3}{5} [/tex]
Now that we have common denominators we can compare both fractions and say that the one with the higher denominator is larger, Hence=
[tex] \frac{4}{5} > \frac{3}{5} [/tex]
[tex] \frac{4}{5} > 0.6[/tex]
Answer:
4/5 > 0.6
Step-by-step explanation:
Given into Decimal:
4/5 = 0.8
Thus, 0.8 > 0.6
Hence, Answer = 4/5 > 0.6
~Learn with Lenvy~
Can someone help me !!! Pleaseee!!
Answer:
someone else had same question before you did https://brainly.com/question/11677565Step-by-step explanation:
What’s the variable in 2n-3=7
Answer:
n
Step-by-step explanation:
As n is an unknown value, it is the variable.
Variable = n
Answer:
n = 5
Step-by-step explanation:
Variable is what we don't know
[tex]2n-3=7[/tex]
[tex]\mathrm{Add\:}3\mathrm{\:to\:both\:sides}[/tex]
[tex]2n-3+3=7+3[/tex]
[tex]\mathrm{Simplify}[/tex]
[tex]2n=10[/tex]
[tex]\mathrm{Divide\:both\:sides\:by\:}2\\[/tex]
[tex]\frac{2n}{2}=\frac{10}{2}[/tex]
[tex]\mathrm{Simplify}[/tex]
n = 5
~Learn with Lenvy~
Please help, i would appreciate it <3.
Answer:
B and C
Step-by-step explanation:
area of square= 81
L^2= 81
L=√81
L=9ft
please answer with steps
question down below
Answer:
[tex]k = 9\frac{3}{5},\: k = - 8[/tex]
Step-by-step explanation:
[tex] |5k - 4| + 2 = 46 \\ \\ \implies \: |5k - 4| = 46 - 2 \\ \\ \implies \: |5k - 4| = 44 \\ \\\implies \: 5k - 4 = \pm \: 44 \\ \\\implies \: 5k - 4 = 44 \: \: or \: \:5k - 4 = - 44 \\ \\\implies \: 5k = 44 + 4 \: \: or \: \:5k = - 44 + 4\\ \\\implies \: 5k = 48 \: \: or \: \:5k = - 40\\ \\\implies \: k = \frac{48}{5} \: \: or \: \:k = \frac{ - 40}{5} \\ \\\implies \: k = 9\frac{3}{5} \: \: or \: \:k = - 8\\ \\[/tex]
I need help heres the question:
he price of a normal meal is $6.75. On tuesday, the meal is on sale for for $1.00 off for the regular price. Sarah brought 4 of thease meals on Tuesday. What is the total cost of these 4 meals before the tax?.
Please help!!
Answer:
the cost of the four meal is $4.00
Austin bought three boxes
containing chocolates, each
at $4.61 and four boxes with
pastries, each at $3.20.
How much in total did he
have to pay?
Answer:
$26.23
Step-by-step explanation:
$4.61 times 3 equals $13.83
and $3.20 times 4 equals $12.8
1 .9 times 42 .5
More questions to come
Answer:
80.75
Step-by-step explanation:
Use the substitution method to solve the problem.
10. y = 3x -34
y = 2x -5
14. y = -3x + 4
-6x -2y = -8
Write an expression for "twice as much as a number added to 30."
Step-by-step explanation:
2x = x + 30
due to the fact that x is the number added to 30 and the second number is twice as much as x
if this helped pls give brainliest
Chase a has locker that is 2 ft. Wide, 2 ft. Deep, and 5 ft. High. How many boxes of fundraising candy can he fit into his locker if each box is 1 ft. 3 in volume? A. 9 boxes of candy B. 10 boxes of candy C. 20 boxes of candy D. 25 boxes of candy
Answer:
the aswer is 20
Step-by-step explanation:
2x2=4x5=20
i hope this helps anyone and everyone
PLEASE HELP I NEED THIS DONE ASAP!
Answer:
10/20 or 1/2
Step-by-step explanation:
There are 10 pink balls out of 20. (add all the numbers together)
So that means there is a 10/20 chance to get a pink ball.
Answer:
[tex]\frac{1}{2}[/tex]
Step-by-step explanation:
So, the probability is the number of favored outcomes/ number of possible outcomes.
In this case, the favored outcomes is pink, which is 10.
The number of possible outcomes is 2+1+10+2+5 = 20
This gives us 10/20, which is 1/2 when simplified
"a number increased by thirty-five"
Answer:
x + 35
Step-by-step explanation:
Let x represent a number
Increased means to add
The graph shows how much insulin, in micrograms (mcg), is in a patient's body after receiving an injection. Write an equation giving the number of mcg of insulin, `m`, in the patient's body h hours after receiving the injection.
By using the first two points on the graph, we conclude that exponential equation is:
y = 200*(0.4)^t
What is the equation?We assume that the equation is an exponential decay of the form:
y = A*(r)^t
When t = 0 we have:
y = A
On the graph we can see that the initial value is 200, then A = 200, so we have:
y = 200*(r)^t
By looking at the graph we can see that:
80 = 200*(r)^1 (this is the second point graphed).
Solving for r we get:
80 = 200*(r)
80/200 = r = 0.4
Then the exponential equation is:
y = 200*(0.4)^t
If you want to learn more about exponential equations, you can read:
https://brainly.com/question/11832081
The company also wants to offer a family size box of cereal. The family size box will be a dilation of the single serving 1. 2-ounce box. It must contain 18. 75 ounces of cereal. What scale factor does the company need to use for the family size box?.
Answer:
2.5
Step-by-step explanation:
The relative volumes of the two similar boxes will be related by the cube of the dilation factor. That means the dilation factor (d) satisfies ...
1.2d³ = 18.75
d³ = 15.625 . . . . . divide by 1.2
d = 2.5 . . . . . . . . take the cube root
The scale factor the company needs to use is 2.5.