Answer:
n = 34.4
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of EqualityStep-by-step explanation:
Step 1: Set Up
Let's let our number be set by variable n.
We add 7 to it: n + 7
We then double that entire expression: 2(n + 7)
That expression is equal to 82.8: 2(n + 7) = 82.8
Step 2: Solve for n
[Division Property of Equality] Divide 2 on both sides: n + 7 = 41.4[Subtraction Property of Equality] Subtract 7 on both sides: n = 34.4∴ Caroline's original number is 34.4.
help please fast!!!!!!!1
Answer:b
Step-by-step explanation: i thinks its b
The width of a rectangle is x. Its length is 3x. How long is the diagonal of the rectangle? Express your answer in simplified radical form.
Answer:
The length of the diagonal is x√10
Step-by-step explanation:
Here, we want to find the length of the diagonal
The diagonal will represent the hypotenuse of a triangle formed with the width and length of the triangle being the measure of the other sides
Mathematically, we then apply Pythagoras’ theorem to get this
we have this as that the square of the diagonal equals the sum of the squares of the two other sides
d^2 = x^2 + (3x)^2
d^2 = x^2 + 9x^2
d^2 = 10x^2
d = √(10x^2)
d = x√10
What is the first step in
solving the equation
2(x-4)=-3(x+2)?
Answer:
Step-by-step explanation:
Answer:
Distributing
Step-by-step explanation:
The first step is to get the x's out of parenthesis. Distribute the 2 into the (x-4), and the -3 into (x+2).
ex. 2(x-4) = -3(x+2)
distribute: 2x-8= -3x+6
Then solve for x.
Hope this helps!
17/2 as a mixed fraction
Answer:
8 1/2
I assumed you meant a mixed number.
Answer:
8 1/2
Step-by-step explanation:
yw :) I hope this helps
what is the solution of the exponential equation? [tex]9^{x} =729[/tex] FULL CALCULATIONS PLEASE.
Answer:
9^x=9^3
divide by 9
x=3
Step-by-step explanation:
and that's why
Answer:
3
Step-by-step explanation:
i gave u the rule in the other post but if you need it again leave a commetn
[tex]9^x=729\\x=log_9729\\log_ba=\frac{log(a)}{log(b)} \\log_9729=\frac{log(729)}{log(9)}=3\\x=3[/tex]
An isosceles triangle has an angle that measures 128°. Which other angles could be in that isosceles triangle? Choose all that apply.
12°
26°
27°
25°
Answer:
Step-by-step explanation:
The sum of the remaining angles is 180-128 = 52°.
The remaining angles must be 26° each.
Don't use math papa or anything like that, please. The best/Correct answer gets brainiac.
Solve the equation for y. Show work.
6x−4y=24
Answer:
y = -3/2x + 6
Step-by-step explanation:
We won't be able to figure out Y in number form, since we have a second variable, but we can figure it out in terms of X.
First, we have to subtract 6x from both sides
( -4y = -6x + 24 )
Then we have to divide both sides by -4
( y = -3/2x + 6 )
This is our final answer in terms of x
Yoyoyoyoyoyo can anyone help me wit this.
Answer and Step-by-step explanation:
First, we find the area of one area of a face on the cube.
6.5 × 6.5 = 42.25
Now, we times 42.25 by 6, since there are 6 faces on a cube.
42.65 × 6 = 253.5
The answer is 253.5
#teamtrees #WAP (Water And Plant)
Ryan is buying a 75-inch LCD TV on an installment pl n. The original price is
$1,500. The agreement includes monthly payments which total $1,650 and a
down payment which totals $175. What is the finance charge for the installment
plan? *
a. $325.00
b.$300.00
c. $275.00
d. $350.00
What is the difference between -12 and -8
Answer:
-4
Step-by-step explanation:
PLS HELP... WILL MARK BRAINLIESST!!!!!
Answer:
bro its c i promise
Step-by-step explanation:
trust me
(2/11x-3-5y)+(-3/11x+5y+5.5) what is the answer for this I need help quick I'm in math
-x/11+8.5
hope it's helpful ❤❤❤
THANK YOU.
YOOOOOOOo i need some help with the problem in the photo below 0-0
Answer: 4
Step-by-step explanation:
2+2 =4
I.E If I have 2 apples and my friend has 2 apples, we would have 4 in total.
Answer:
I think its 4 but I mean that's a hard one
Step-by-step explanation:
goldfish plus goldfish
=2 goldfish
Find the measure of angle 1
Answer:
112 Degrees
Step-by-step explanation:
46+90=136
360-136=224
224/2=112
112 Degrees
Answer:
122
Step-by-step explanation:
46 + 90 = 136
360 - 136 = 224
224 ÷ 2 = 122
pls help wil give brainliest for full answer
Answer:
1. angle m=angle L
2.MR=RL
3.ang;e O=angle P
Triangle MOR= triangle LPR
ASA
4. angle M= angle D
5. AM=RD
6. MC=DN
Triangle AMC= RDN
by SSA
Step-by-step explanation:
Answer:
1. angle m=angle L
2.MR=RL
3.ang;e O=angle P
Triangle MOR= triangle LPR
ASA
4. angle M= angle D
5. AM=RD
6. MC=DN
Triangle AMC= RDN
by SSA
30 points 1
Mei wants to solve the inequality --W < 12. How can she isolate the variable?
2
• Multiply both sides by -2 and reverse the inequality symbol.
• Multiply both sides by -2 and do not reverse the inequality symbol.
*) Divide both sides by 12 and reverse the inequality symbol.
) Divide both sides by 12 and do not reverse the inequality symbol.
Answer:
Multiply both sides by -2 and reverse the inequality symbol.
Step-by-step explanation:
To isolate w, multiply both sides by the reverse of -1/2 (because -1/2*2=1 ), which is -2
When multiplying or dividing by negatives, you must reverse the inequality symbol as well.
To isolate the variable, you multiply both sides by -2 and reverse the inequality symbol.
Isolating variables in inequalityIsolation of variables means making the variable the subject of the formula from the given expression.
Given the inequality expression -1/2 w < 12
To make w the subject of the formula, we will have to multiply both sides by -2 to have;
-1/2 w * -2 > 12 * -2
w > -24
Hence to isolate the variable, you multiply both sides by -2 and reverse the inequality symbol.
Learn more on inequality here: https://brainly.com/question/11613554
Which of the following is equivalent to (1/2)^-2t
Answer:
Choice (3) is correct.
The Skateboard club has 2 different colors of skateboards blue and red. Can you find the number of skateboards of each color, if the total number of skateboards is 15, and their product is 44?
Answer:
The number of skateboards of each color is 11 and 4
Step-by-step explanation:
Let x represent blue skateboards and
y represent red skateboards.
From the question, the total number of skateboards is 15, that is,
x + y = 15 ...... (1)
and their product is 44, that is,
xy = 44 ...... (2)
From equation (1),
x + y = 15
We can write that
x = 15 - y ...... (3)
Substitute this into equation (2)
xy = 44
(15-y)y = 44
15y -y² = 44
Then,
y² - 15y + 44 = 0
Solve quadratically
y² -4y -11y + 44 = 0
y(y-4) -11(y-4) = 0
(y-11)(y-4) = 0
y-11 = 0 OR y-4 = 0
y = 11 OR y = 4
Put the values of y into equation (3) for x
x = 15 - y
When y = 11
x = 15 - 11
x = 4
and when y = 4
x = 15 -4
x = 11
(4,11) and (11,4)
It is either 4 blue and 11 red skateboards OR 11 blue and 4 red skateboards.
Hence, the number of skateboards of each color is 11 and 4.
Question 7
Review
1) Listen
A new bagel store opened. The first day 15 customers entered the store. The number of
customers that enter the store triples each day after. Which function represents f(d), the
number of customers that enter on the d day?
1.
f(d) = 3(15)
2.
f(d) = 3d + 15
3
f(d) = 150 + 3
f(d) = 15(3)
Submit Answer
Answer:
[tex]f(d) = 15 + 3d[/tex]
Step-by-step explanation:
Given
[tex]a = 15[/tex] --- day 1
[tex]Rate = 3[/tex] -- i.e. triples daily
Required
Determine the function f(d)
The number of customers on a particular day is:
Customers = Day 1 + Rate * Number of days
Represent as a function:
[tex]f(d) = a + Rate* d[/tex]
Where d is the number of days.
So, we have:
[tex]f(d) = 15 + 3* d[/tex]
[tex]f(d) = 15 + 3d[/tex]
A butterfly starts at 20 m and changes -16m ?
Answer:
it is at 4 meters
Step-by-step explanation:
20 - 16 = 4
Hope this helps!
Maybe brainliest?
Answer:
4 mters
Step-by-step explanation:
The map shows different events at a ski resort. Each unit of the coordinate plane represents 1 mile.
What is the distance between snow tubing and the ski lift?
A. 6 miles
B. 7 miles
C. 13 miles
D. 17 miles
Answer: B
Step-by-step explanation:
Let us write down the coordinates of the snow tubing and the ski lift.
Ski Lift = (3 , -4)
Snow Tubing = (3, 3)
We want to find the distance, which can be found by subtracting their y coordinates from each other.
-4 - 3 = 7
or
3 - (-4 ) = 7
If you can, you can always count the squares away each point is from each other. The answer is B - 7 miles.
Answer:
B
Step-by-step explanation:
Let us write down the coordinates of the snow tubing and the ski lift.
Ski Lift = (3 , -4)
Snow Tubing = (3, 3)
We want to find the distance, which can be found by subtracting their y coordinates from each other.
-4 - 3 = 7
or
3 - (-4 ) = 7
If you can, you can always count the squares away each point is from each other. The answer is B - 7 miles.Let us write down the coordinates of the snow tubing and the ski lift.
i took the test
PLEASE HELP ME QUICK PLEASE!
I think the answer is option 4
Given three side lengths, how many triangles can be formed?
infinitely many
3
1
2
Answer:
explanation below
Step-by-step explanation:
if sum of any 2 sides length is greater than the third side and not take rotation transformation into account, only 1 triangle can be formed.
Answer:
1 TriangleStep-by-step explanation:
ODYSSEY
what is the slope intercept equation for the following line? 
The graph of y= 3 + 2x -x is shown.
a) What are the coordinates of the turning point? I
b) What are the coordinates of the roots of the equation 3 + 2x - x = 0 ?
Answer:
Step-by-step explanation:
(1, 4)
(-1, 0), (3, 0)
The coordinate of the turning point is (1,4) and the coordinates of the roots are (-1,0) and (3,0)
How to determine the coordinate of the turning point?This is the vertex of the equation.
The equation is the given as:
y = 3 + 2x - x^2
According to the graph, the vertex is at the coordinate (1,4)
Hence, the coordinate of the turning point is (1,4)
How to determine the coordinate of the roots?The equation is the given as:
3 + 2x - x^2 = 0
According to the graph, the equation crosses the x-axis at (-1,0) and (3,0)
Hence, the coordinates of the roots are (-1,0) and (3,0)
Read more about quadratic equations at:
https://brainly.com/question/8649555
#SPJ9
What is the circumference of 15 feet circle
Answer:
47.124 feet
565.49 inches
47′ 1.49″ feet and inches
14.363 meters
1,436.3 centimeters
Step-by-step explanation:
hope this helped
Tyler's brother works in a shoe store.
1. Tyler's brother earns a commission. He makes 2.5% of the amount he sells. Last week, he sold $700 worth of shoes. How
much was his commission?
2. The store bought a pair of shoes for $25, and sold it for $45. What percentage was the markup?
3. Tyler's brother earns $14 per hour. The store offers him a raise-a 15% increase per hour. After the raise, how much will
Tyler's brother make per hour?
Answer:
1. $17.5
3. $16.1
Step-by-step explanation:
1. $700x1.025=717.5
717.5-700=17.5
3. $14x1.15=16.1
333 years ago, the residents of Planet XXX found a black hole leading to another galaxy. Since then, they have been leaving Planet XXX at a rate of 120120120 residents per year.
The following equation describes this situation:
\\3 = -360−120⋅3=−360minus, 120, dot, 3, equals, minus, 360
What does -360−360minus, 360 tell us?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
A total of 360360360 residents left Planet XXX in the past three years.
(Choice B)
B
360360360 residents left Planet XXX each year.
(Choice C)
C
None of the above
Answer:
Choice A
Step-by-step explanation:
It said it was right in Khan lol :)
PLEASE HELP ME I WILL DO ANYTHING PLEASE I BEG OF YOU I DON'T KNOW HOW TO DO IT :(
Simplify the expression 4x3+4xX
I really need help
What is the scale factor? PLZ HELP
Answer:
1 2/3 aka 1.6666666666666...
Step-by-step explanation:
When you divide 15 by 9 that is the number you get, and you can verify it by then multiplying 9 by 1 2/3 and you get 15. I don't know if they are wanting you so get x, but if they do then you would multiply 6 by the scale factor and you would get 10.