Answer:
The answer is A.
Step-by-step explanation:
Rational numbers are any real numbers (including negatives) and -5 + -4 = -9 which is a real number, so it is rational.
is an isosceles trapezoid below x=
Answer:13
Step-by-step explanation:
5x+15=7x-11
7x. 7x
2x+15=11
+15 +15
2x =26
———
2
x = 13
A trapezoid is a quadrilateral which is having a pair of opposite sides as parallel and the length of the parallel sides is not equal. The value of x is 13.
What is a Trapezoid?A trapezoid is a quadrilateral which is having a pair of opposite sides as parallel and the length of the parallel sides is not equal.
In an isosceles trapezoid, the angles formed at the ends of any one of the parallel lines are congruent. Therefore, we can write,
5x+15 =7x-11
15+11=7x-5x
26=2x
x = 13
Hence, the value of x is 13.
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After 7 years, what is the total amount of a compound interest investment of an initial
principal of $1685 at a rate of 4.3% compounded quarterly?
A. 1942.18
B.373,709.25
C.2461.55
D.2273.13
Answer:
Option D. $2273.13
Step-by-step explanation:
we know that
The compound interest formula is equal to
[tex]A=P(1+\frac{r}{n})^{nt}[/tex]
where
A is the Final Investment Value
P is the Principal amount of money to be invested
r is the rate of interest in decimal
t is Number of Time Periods
n is the number of times interest is compounded per year
in this problem we have
[tex]t=7\ years\\ P=\$1,685\\ r=0.043\\n=4[/tex]
substitute in the formula above
[tex]A=\$1,685 (1+\frac{0.043}{4})^{4*7}=\$2,273.13[/tex]
What is the volume of the come with radius 5 m and height 6 m ? Express the answer in terms of pi.
A. 35pi m^3
B. 47pi m^3
C. 50pi m^3
D. 63pi m^3
Answer:
C
Step-by-step explanation:
The volume (V) of a cone is calculated using the formula
V = [tex]\frac{1}{3}[/tex] πr² h
where r is the radius and h the perpendicular height
here r = 5 and h = 6, hence
V = [tex]\frac{1}{3}[/tex] × π × 5² × 6
= 2π × 25 = 50π m³ → C
The volume of the cone is [tex]\( 50\pi \, \text{m}^3 \).[/tex]
How to get the volume of the cone
The formula for the volume v of a cone is given by:
[tex]\[ V = \frac{1}{3} \times \pi \times r^2 \times h \][/tex]
The variables in the formula are:
r is the radius of the base of the cone.
his the height of the cone.
Given a cone with radius r = 5 meters and height h = 6 meters, substitute these values into the formula:
[tex]\[ V = \frac{1}{3} \times \pi \times (5^2) \times 6 \]\[ V = \frac{1}{3} \times \pi \times 25 \times 6 \]\[ V = \frac{1}{3} \times \pi \times 150 \]\[ V = 50 \pi \][/tex]
Therefore, the volume of the cone is [tex]\( 50\pi \, \text{m}^3 \).[/tex]
I need help for number 7 please please
Answer:
They averaged 79 km per hour
Step-by-step explanation:
To find the average distance, take the kilometers and divide by the hours
1106 km/ 14 hours
79 km / hours
They averaged 79 km per hour
79
79x14 is 1106. hope this helps
X - 10 = 10 solve for x
Answer:
x=20
Step-by-step explanation:
20-10=10
Answer:
x = 20
Step-by-step explanation:
x - 10 = 10
+10
cancel out the 10 and do the same thing to both sides
x = 20
very simple
The length of the sides of a triangle are 2x +y/2, 5x/3+y + ½ and 2/3x +2y +5/2. If the triangle is equilateral, find its perimeter.
Answer:
Step-by-step explanation:
If the triangle is equilateral :
2x +y/2 = 5x/3+y + ½ = 2/3x +2y +5/2
so the perimeter is : P = 3(2x +y/2) or 3(5x/3+y + ½) or 3(2/3x +2y +5/2)
the simplest is : P = 3(2x +y/2)
P = 6x + (3y)/2
Use the perfect square method
(3x + 3)^2 = 36
Factor out the common term; 3
(3(x + 1))^2 = 36
Use the Multiplication Distributive Property; (xy)^a = x^ay^a
3^2(x + 1)^2 = 36
Simplify 3^2 to 9
9(x + 1)^2 = 36
Divide both sides by 9
(x + 1)^2 = 36/9
Simplify 36/9 to 4
(x + 1)^2 = 4
Take the square root of both sides
x + 1 = √4
Since 2 * 2 = 4, the square root of 2 is 2
x + 1 = 2
Break down the problem into these 2 equations
x + 1 = 2
x + 1 = -2
Solve the first equation; x + 1 = 2
x = 1
Solve the second equation; x + 1 = -2
x = -3
Collect all solutions;
x = 1, -3
What is 12/20 written as a decimal
should be 20%
Hope this helps
Answer:it's 12.20
Step-by-step explanation:
what does 1v+6v=7 equal
Answer: v = 1
1v + 6v = 7 Combine like terms
7v = 7 Divide both sides by 7
v = 1 Answer!
Answer:
v=1
Step-by-step explanation:
You can add the similar variables (1v and 6v) to get 7v. now your equation should be 7v=7. divide each side by 7 so that the variable stands alone. 7/7 = 1, so v=1.
I have to find the volume and the surface area of a cereal box.
12 inches tall
8 inches wide
please show all your work
Answer:
Volume: 8x1x12=96 inches^3
Surface area: 8x1x2=16
1x12x2=24
8x12x2=192
the total surface is: 16+24+192=232 inches^2
12 in tall * 8 in wide = 96 in area. You need a third value to find a volume.
About what distance in feet would a person be 8 seconds after experiment begins
is this the full question?
The Wall Street Journal reporter the biggest music comeback in 2014 was vinyl records. Nearly 8 million vinyl were sold in 2014, mostly to younger markets. If there were 15 vinyl record factories pressing records in the United States in 2014, and only 2/3 remain operational in 2015, how many factories closed down?
Answer:
5 factories closed
Step-by-step explanation:
In 2014 there were 15 operating factories.
We know that of those 15 factories only 2/3 remain operative.
If only 2/3 remain operational this means that 1/3 of them closed.
To calculate the number of factories that closed we must multiply the initial number of operative factories by 1/3.
This is:
[tex]15 * \frac{1}{3} = \frac{15}{3} = 5[/tex].
5 factories closed
the length of a rectangle is 6cm longer than its width.
if the perimeter of the rectangle is 32cm, find its area.
Answer:
A = 55 cm²
Step-by-step explanation:
Here, L = W + 6 cm, and P = 2W + 2L = 2W + 2(W + 6 cm) = 32 cm
Then 2W + 2(W + 6 cm) = 32 cm becomes:
2W + 2W + 12 cm = 32 cm, or
4W = 20 cm.
Therefore, W = 20 cm / 4 = 5 cm
The area of this rectangle is A = L · W = (5 cm + 6 cm) · (5 cm), or
A = (11 cm)(5 cm), or A = 55 cm²
Final answer:
The area of the rectangle is calculated by solving for the width using the given perimeter, then finding the length, and finally multiplying the two. The width is 5 cm, the length is 11 cm, and the area is 55 cm².
Explanation:
Let's denote the width of the rectangle as w centimeters. According to the problem, the length of the rectangle is 6 cm longer than its width, so we can express the length as w + 6 cm.
The perimeter of a rectangle is calculated by the formula P = 2l + 2w, where P is the perimeter, l is the length, and w is the width. Given the perimeter is 32 cm, we can write the equation 2(w + 6) + 2w = 32.
Solving this equation:
2w + 12 + 2w = 32
4w = 32 - 12
4w = 20
w = 5 cm
Now that we have the width, we can find the length:
l = w + 6
l = 5 + 6
l = 11 cm
The area of the rectangle is found by multiplying the length by the width, A =[tex]l \(\times\) w[/tex], which gives us:
A = [tex]11 \(\times\) 5[/tex]
A = 55 cm²
If I were to use the distributive property to simplify 3(10+15x) would you multiply 3 times 10 and add 15x to it?
Answer:
No!
The answer is 30 + 45x See below. Very important question.
Step-by-step explanation:
No!
If you do that, you are violating the properties of the distributive property.
You must multiply both sides of the plus sign by 3
3(10 + 15x) = 3*10 + 3*15x
3(10 + 15x) = 30 + 45x
The average revenue of a TV manufacturing unit is given by r(x)=75x^2-5x^3/2 where x is the number of TVs sold by the firm. Find the total revenue generated by the firm.
Answer:
The total revenue generated by the firm is:
[tex]P(x) = 75x^3-5x^{\frac{5}{2}}[/tex]
Step-by-step explanation:
The average cost per TV is:
[tex]r(x) =\frac{P(x)}{x}[/tex]
Where x is the number of televisions sold and P is the firm's income for all the televisions sold
In this problem we know the equation r(x).
Then P(x) will be:
[tex]P(x) = x*r(x)[/tex]
Therefore if [tex]r(x)=75x^2-5x^{3/2}[/tex] then
[tex]P(x) = x*(75x^2-5x^{3/2})[/tex]
[tex]P(x) = 75x^{2+1}-5x^{\frac{3}{2}+1}\\\\P(x) = 75x^3-5x^{\frac{5}{2}}[/tex]
Answer:
Px =75x^3-5x^5/2
Step-by-step explanation:
Using a "15% off" coupon, Dianne saved $12.75 on a new chair for her home office. What was the chair's regular price? How much did she pay?
Answer:
The original price was $85
She spent $72.25
Step-by-step explanation:
When x equals the price of the chair:
12.75/15 = x/100
15 x = 1275
x = $85
To find the price she paid:
85 - 12.75 = $72.25
43 plus what equals 112
The number that when added to 43, would give the result of 112 can be found to be 69.
How to find the number ?To find the number that, when added to 43, equals 112, you can use algebraic reasoning.
Let's represent the unknown number with the variable "x". The equation can be set up as:
43 + x = 112
To solve for "x," we need to isolate it on one side of the equation.
First, subtract 43 from both sides of the equation:
43 + x - 43 = 112 - 43
The 43 on the left side cancels out:
x = 112 - 43
Simplifying the right side of the equation:
x = 69
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To solve the equation 43 + x = 112, subtract 43 from both sides to isolate 'x'. The value of 'x' is 69.
Explanation:To find the number that, when added to 43, equals 112, we can use algebra. Let's use the variable 'x' to represent the unknown number. So, the equation is 43 + x = 112.
To isolate 'x', we need to move 43 to the other side of the equation.
By subtracting 43 from both sides, we get x = 112 - 43. Evaluating the subtraction, we find that x = 69.
If (-3) exponent -5 = 1/x, what is the value of x?
-243
- 1/243
1/243
243
Answer:
[tex]\boxed {-243}\\[/tex]
Step-by-step explanation:
[tex]\begin{array}{rclr}(-3)^{-5} & = & \dfrac{1}{x}& &\\(-3)^{5} & = & x &\text{Inverted each side of the equation}\\x & = & \boxed {\textbf{{-243}}}\\\end{array}[/tex]
Please need help badly. If the area of BAC=8, what is the area of EDF
Answer:im not sure but if im correct the answer should be 6
Step-by-step explanation:im assuming this cause if 8/4 is 2 then take the 2 and times it with the 3
Answer:
Area of ΔEDF = 4.5 in²
Work shown image:
Find the equation of the line that is perpendicular to y=-2/3x and contain the point (4,-8)
Answer:
y = 3/2x - 14.
Step-by-step explanation:
The slope of the perpendicular line is - 1 / -2/3
= 3/2.
Using the point slope form y-y1 = m(x-x1):
y - (-8) = 3/2(x - 4)
y + 8 = 3/2x - 6
y = 3/2x - 14.
Answer:
y = [tex]\frac{3}{2}[/tex] x - 14
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = - [tex]\frac{2}{3}[/tex] x ← is in this form
with slope m = - [tex]\frac{2}{3}[/tex]
Given a line with slope m then the slope of a line perpendicular to it is
[tex]m_{perpendicular}[/tex] = - [tex]\frac{1}{m}[/tex] = - [tex]\frac{1}{-\frac{2}{3} }[/tex] = [tex]\frac{3}{2}[/tex], hence
y = [tex]\frac{3}{2}[/tex] x + c ← is the partial equation of the perpendicular line
To find c substitute (4, - 8) into the partial equation
- 8 = 6 + c ⇒ c = - 8 - 6 = - 14, so
y = [tex]\frac{3}{2}[/tex] x - 14 ← equation of perpendicular line
Use substitution to solve the linear system of equations.
y = 4x
3x + 5y = -46
(-8, -2)
(8, -2)
(-2, 8)
(-2, -8)
Answer:
(-2,-8)
Step-by-step explanation:
y=4x
3x+5y=-46
3x+5(4x)=-46
3x+20x=-46
23x=-46
x=-2
y=4(-2)
y=-8
there are 7 circles in a row. there are 3 rows complete story
Wym is this multiplication
Here is a quadratic equation. is it in Standard form? 2x^2-7x-3=0
Answer:
Yes
Step-by-step explanation:
The standard form for a quadratic equation in the US has the terms in decreasing order by power on the left of the equal sign, and the right side zero. Preferably, the leading coefficient is positive. This might also be called "general form." Elsewhere, the "standard form" may be different.
The sum of four consecutive odd numbers is 40 what is the greatest of the four numbers
Answer:
13
Step-by-step explanation:
First find the average the numbers (40 / 4 = 10)
2 are more and 2 are less
7, 9, 11, 13
An odd number can be written as 2n+1, where n is an integer. Four consecutive odd numbers can be written as 2n-3, 2n - 1, 2n + 1 and 2n + 3. Adding these together gives you 8n, which we are told is 40. So n is 5 and the four consecutive odd numbers are 7, 9, 11 and 13.
Write the number which is exactly a third of the way from 2.6 to 3.5. Please explain how you get the answer.Thanks
3.5-2.6=0.9
0.9÷3=0.3
2.6+0.3=2.9
answer is 2.9
What is the maximum number of relative extremes contained in the graph of this function f(x)=3x^4-x^2+4x-2
Answer:
Maximum number of relative extremes contained in the graph of this function = 3.
Step-by-step explanation:
We have been given function [tex]f\left(x\right)=3x^4-x^2+4x-2[/tex].
Now we need to find about what is the maximum number of relative extremes contained in the graph of the given function [tex]f\left(x\right)=3x^4-x^2+4x-2[/tex].
Degree of the given function = 4.
Because degree is the highest power of variable.
Then relative number of extrema = degree - 1 = 4 - 1 = 3
Hence final answer is 3.
what makes n true 1/2 (n+4)=6
Answer: N=8
Step-by-step explanation: So 1/2*4=2 then you know that you need 4 to get to six because you already have two. Then 8/2=4 so N=8.
1/2(8+4)=6
4+2=6
6=6
Hope this helped!!!!!
Final answer:
To find the value of n that satisfies the equation 1/2 (n+4)=6, multiply both sides by 2 and subtract 4 from both sides to get n=8.
Explanation:
The student's question asks for the solution to the algebraic equation: 1/2 (n+4)=6. To solve for n, follow these steps:
Multiply both sides of the equation by 2 to get rid of the fraction: n + 4 = 12.Subtract 4 from both sides to isolate n: n = 12 - 4.Simplify the equation to find the value of n: n = 8.Therefore, the value of n that makes the equation true is 8.
Evaluate 9x + 3xy − 2 for x = 3 and y = −3.
Answer:
- 2
Step-by-step explanation:
Given
9x + 3xy - 2
Substitute x = 3 and y = - 3 into the expression
= 9(3) + 3(3)(- 3) - 2
= 27 - 27 - 2 = - 2
Answer:
C
Step-by-step explanation:
Just did it on edg
A roll of fabric was 120 inches long. A customer bought 3 feet of the fabric.
How many feet of fabric were remaining?
The 7 feet of fabric were remaining.
To solve this problem step by step:
1. Convert the length of the roll of fabric from inches to feet.
- 120 inches ÷ 12 inches/foot = 10 feet
2. Subtract the length purchased by the customer from the total length of the roll.
- 10 feet - 3 feet = 7 feet
So, the customer bought 3 feet of fabric, leaving 7 feet remaining.
1. To convert inches to feet, we know that there are 12 inches in a foot. So, we divide the length of the fabric in inches by 12 to get the length in feet.
- 120 inches ÷ 12 inches/foot = 10 feet
2. Next, we subtract the length purchased by the customer (3 feet) from the total length of the roll (10 feet) to find out how much fabric remains.
- 10 feet - 3 feet = 7 feet
Therefore, the customer bought 3 feet of fabric, leaving 7 feet remaining.
Complete question:
A roll of fabric was 120 inches long. A customer bought 3 feet of the fabric.
How many feet of fabric were remaining?
2. What is the external probability of rolling a 4
3 what is the external probability of getting at least one tail
Answer:
2. 1- Experimental probability of rolling a 4 = 40%
3. 2- Theoretical probability is 3% greater than experimental probability.
Step-by-step explanation:
Experimental probability of rolling a 4 = 100 × [tex]\frac{8}{20}[/tex]
= 100 × 0.4
= 40%
Experimental probability of getting at least one tail = [tex]\frac{72}{100}[/tex]
= 0.72
Theoretical probability of getting at least one tail = [tex]\frac{3}{4}[/tex]
= 0.75
Theoretical probability is 3% greater than experimental probability.