in the given system of equations, the value of x is 2
Simultaneous linear equationFrom the question, we are to determine the value of x
The simplified equation is
-5x = -10
To determine the value of x, we will divide both sides by -5
-5x/-5 = -10/-5
x = 2
Hence, the value of x is 2
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2. Jill makes a blend of brownies for the bake sale. The double-chocolate brownies are $5.50 per plate, and the chocolate-mint brownies are $4.00 per plate. Jill sells more than 11 plates total. Jill also sells less than $66.50 worth of brownies. Using this information, choose the solution set that would be found in the overlapping areas of a graph of Jill's sales. 2. Jill makes a blend of brownies for the bake sale . The double - chocolate brownies are $ 5.50 per plate , and the chocolate - mint brownies are $ 4.00 per plate . Jill sells more than 11 plates total . Jill also sells less than $ 66.50 worth of brownies . Using this information , choose the solution set that would be found in the overlapping areas of a graph of Jill's sales .
By using a graphing calculator, the solution set that would be found in the overlapping areas of a graph of Jill's sales is (15, -4).
How to determine the solution set?First of all, we would assign variables to the blend of brownies that were made by Jill for the bake sale as follows:
Let x be the double-chocolate brownies.Let y be the chocolate-mint brownies.Since Jill sold more than 11 plates in total, we have:
x + y > 11.
Also, Jill sold less than $66.50 worth of brownies:
5.50x + 4.00y < 66.50.
By using a graphing calculator, the solution set that would be found in the overlapping areas of a graph of Jill's sales is (15, -4).
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what is the length of EF?
The length of EF is 3.8
How to solve for EF?To do this, we make use of the following law of sines
EF/sin(D)= DE/sin(F)
So, we have:
EF/sin(75)= 3/sin(50)
This gives
EF = sin(75) * 3/sin(50)
Evaluate the product
EF = 3.8
Hence, the length of EF is 3.8
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What is the TV's length?
Answer:
32.75 inches
Step-by-step explanation:
Pythagoras' theorem. The long length squared minus the short length squared gives you the answer squared, so square root it :)
The cost of a gallon of gas increased from $3.54 to $3.87 over the weekend. What is the percent increase for the cost of gas, rounded to the nearest whole percent?
Answer:
9%
Step-by-step explanation:
percent increase is calculated as
[tex]\frac{increase}{original}[/tex] × 100%
increase = $3.87 - $3.54 = $0.33 , then
% increase = [tex]\frac{0.33}{3.54}[/tex] × 100% ≈ 9% ( to the nearest whole percent )
Answer:
9 % (rounded to the nearest whole percent)
Step-by-step explanation:
the amount of increase:
3.87 - 3.54 = 0.33
Then
the percent increase for the cost of gas :
[tex]=\frac{0.33}{3.54} \times 100\\\\= 0.093220338983 \times 100\\\\=9.3220338983 \ \%[/tex]
Select the correct answer.
What is the value of this expression when a = 2 and b = -3?
a³ - 6³
5
-208
Explanation:
If the complete expression is a³ – 6³
then a³ – 6³ with a being equal to 2 is
(2)³ – (6)³ =
(2 × 2 × 2) – (6 × 6 × 6)
=
(4 × 2) – (36 × 6)
=
(8) – (216)
=
-208
This is done with substitution, just do the arithmetic with 2 in the place of a.
Answer: 7
Step-by-step explanation:
Substitute the given values of a and b into the expression:
(a)3 - (b)3 = (2)3- (3)3
5 5
Then evaluate the expression using the order of operations:
8- (-27) = 35/5
5
= 7
A(n) _____ is a line drawn from one part of a circle's circumference to another without passing through the center.
Answer:
chord
Step-by-step explanation:
a chord is a line drawn from one part of a circle's circumference to another without passing through the centre.
If the line passed through the centre then it would be a diameter
What prism or other 3-dimensional shape would you use to model the tree trunk below? (Rectangular prism, triangular prism, square prism, or cylinder). If the height of the tree trunk is 13 ft and the radius is 1.5 ft, what is the volume in cubic feet? Round to the nearest tenth.
Answer:
A cylinder,
91.9 ft^3 to nearest tenth.
Step-by-step explanation:
That would be a cylinder,
Volume of the given tree trunk
= π r^2 h
= π * 1.5^2 * 13
= 91.89 ft^3.
Everyday Math
424. House Paint April wants to paint the exterior of her house. One gallon of paint covers about 350 square feet, and the exterior of the house measures approximately 2000 square feet. How many gallons of paint will she have to buy?
Answer:
If the exterior of the house is 2000 square feet and each gallon of paint covers 350 square feet.
Then she needs to buy 6 gallons of paint.
Step-by-step explanation:
Dividing the total area by the area that each gallon of paint covers we get,
[tex]$\frac{2000}{350} \times \frac{50}{50}=\frac{40}{7}$$[/tex]
Now, performing long division we get,
[tex]$7\overset{5}{\overline{\left){\begin{align} & 40 \\ & \underline{35} \\ & \underline{05} \\ \end{align}}\right.}}$$[/tex]
She needs five gallons of paint fully and some amount of the sixth gallon because we get a remainder.
She can't buy paint in fraction, hence she has to buy 6 gallons of paint.
I need help
are they no solution or infinite solutions?
I'm getting ready for high school so I'm reviewing 8th grade math.
Answer:
1. No.
2. Yes, there is no solution here.
Step-by-step explanation:
The former:
[tex]8(5x - 3) = 6(-3x - 4); \\ 8 * 5x - 8 * 3 = 6 * (-3x) - 6 * 4; \\ 40x - 24 = -18x - 24; \\ 40x + 18x = -24 + 24; \\ 58x = 0; \\ x = 0.[/tex]
[tex]\{0\}[/tex] is our set of solutions.
The latter:
[tex]3x - 13 = 7(x + 2) - 4(x - 7); \\ 3x - 13 = 7x + 7 * 2 - 4x - 4 * (-7); \\ 3x - 13 = 7x + 14 - 4x + 28; \\ 7x - 4x - 3x = -13 - 14 - 28;\\ 0x = 55; \\ x \in \emptyset.[/tex]
In other words, there is not any solution from the set of real numbers that suits us.
The coordinates of CD are C (-7,-2) and D (-3,-5). Point E is the midpoint of CD. What are the coordinates of the midpoint E?
The coordinates of the midpoint of CD with endpoint at C(-7,-2) and D(-3,-5) is E(-5, -3.5)
What is an equation?An equation is an expression that shows the relationship between two or more variables and numbers.
Let (x, y) represent the coordinate of the midpoint E. Point E is the midpoint of CD, hence:
x = [(-7) + (-3)] / 2 = -5
y = [(-2) + (-5)] / 2 = -3.5
The coordinates of the midpoint of CD with endpoint at C(-7,-2) and D(-3,-5) is E(-5, -3.5)
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Which of the following lines will have a negative slope? Select all that apply
8y+4,st = 4y +8 rt=36
The value of y is 2
How to solve for y?The complete question is in the image
From the complete question, we have:
rs + st = rt
This gives
8y + 4 + 4y + 8 = 36
Evaluate the like terms
12y = 24
Divide by 12
y = 2
Hence, the value of y is 2
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Lines DE and AB intersect at point C.
Mark this and return
A.
(3
B
(2x+2)
(5x+3)*
E
What is the value of x?
O 12
O 25
O38
O 52
Save and Exit
Next
51:10
Submit
Answer:
25
Step-by-step explanation:
the answer is 25 because I searched it on socratic
What is the length of the side opposite the 60° angle?
Answer: 90
Step-by-step explanation:
opposite side is 90
Answer:
6√3
Step-by-step explanation:
This is a 30-60-90 triangle meaning that the hypotenuse is 2 times the shorter leg and the leg opposite of the 60-degree angle is √3 times larger than the shorter leg.
6*√3 = 6√3
I need help with question 11-21 show your work please and thank you!
The computation shows that the thickness of the beam is 3.75 inches.
How to calculate the values?11. The thickness of the beam will be:
= 3/4 inch × 5
= 3.75 inches.
12. The length of the board will be:
= 7 5/8 × 5
= 38.125 inches.
13. The total height of the stairs will be:
= 8 3/16 × 13
= 106.4375 inches.
14. The height of the stack will be:
= 55 × 3/8in
= 20.625 inches.
15. The length of the board will be:
= 3/4 × 86 1/4
= 64.6875 inches.
16. The number of hours that it'll take to replace the trim will be:
= 37 1/2 × 1/4
= 9.375 hours.
17. The height of the will required will be:
= 22 × 5/12
= 9.167 feet
18. The inches removed from the wood will be:
= 1/16 × 7
= 0.4375 inches.
19. The shortest finish stock will be:
= 3/16 × 15
= 2.8125 feet.
20. The total amount of board wasted will be:
= 3/16 × 11
= 2.0625 inches.
21. The total rise in the staircase will be:
= 22 × 7 3/8
= 162.25 inches.
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write each polynomial in standard form. Then give the leading coefficient. You may need to combine like terms before writing the polynomial in standard form.
10-3x²+x^5 + 4x³
Step-by-step explanation:
To write a polynomial in standard form, put the degree that are the greatest first
So here it would be
[tex] {x}^{5} + 4 {x}^{3} - 3 {x}^{2} + 10[/tex]
Remember constant are numbers that you learned back in elementary,
Numbers like 10,90,4,1,0,-3 etc.
Remember that constant are basically represented like this
[tex]k \times {x}^{0} [/tex]
For example, 10 is represented like
[tex]10 \times {x}^{0} [/tex]
Since 0 is the smallest degree possible, for a polynomial, constants are the last term of a polynomial in standard form
For the following exercises, solve each inequality and write the solution in interval notation.
30. 2| v − 7 | − 4 ≥ 42
Answer:
The solution to the inequality [tex]$2|v-7|-4 \geq 42$[/tex] in interval notation is given by [tex]$-16 \leq v \leq 30$[/tex].
Step-by-step explanation:
An absolute value inequality [tex]$2|v-7|-4 \geq 42$[/tex] is given.
It is required to solve the inequality and write the solution in interval form.
To write the solution, first solve the given absolute value inequality algebraically and then write it in interval notation.
Step 1 of 4
The given absolute value inequality is [tex]$2|v-7|-4 \geq 42$[/tex].
Add on both 4 sides,
[tex]$$\begin{aligned}&2|v-7|-4 \geq 42 \\&2|v-7|-4+4 \geq 42+4 \\&2|v-7| \geq 46\end{aligned}$$[/tex]
Step 2 of 4
Divide by 2 on both sides,
[tex]$$\begin{aligned}&\frac{2|v-7|}{2} \geq \frac{46}{2} \\&|v-7| \geq 23\end{aligned}$$[/tex]
The inequality can be written as [tex]$v-7 \leq 23$[/tex] and [tex]$v-7 \geq-23$[/tex]
Step 3 of 4
First solve the inequality, [tex]$v-7 \leq 23$[/tex].
Add 7 on both sides,
[tex]$$\begin{aligned}&v-7 \leq 23 \\&v-7+7 \leq 23+7 \\&v \leq 30\end{aligned}$$[/tex]
Step 4 of 4
Solve the inequality [tex]$v-7 \geq-23$[/tex].
Add 7 on both sides,
[tex]$$\begin{aligned}&v-7 \geq-23 \\&v-7+7 \geq-23+7 \\&v \geq-16\end{aligned}$$[/tex]
The solution of the inequality in interval notation is given by [tex]$-16 \leq v \leq 30$[/tex].
please help ill give whoever has the best answer the brainliest answer
Answer:
It would be B the distance from the ground to the kite :)
Step-by-step explanation:
The graph shows this situation best out of the other 3 choices!
Have an amazing day!!
Please rate and mark brainliest!!
What is the perimeter of the rectangle shown below?
Answer: D. 26 units
Step-by-step explanation: perimeter is the distance around the figure, or all the sides added together.
With a rectangle it is known that the opposite sides are congruent, or the same, so 8+8+5+5 = 26
15 brainlist coins. ASAP. What type of function is f(x) = 2^x –14?
This is an exponential function due to the presence of exponent
What are exponential functions?Exponential functions are inverse of logarithmic functions. Given the function below;
f(x) = 2^x - 14
This is an exponential function due to the presence of exponent and since the standard form of an exponential function is y = ab^x
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What is 78 to the square root closer to
Answer:
The square root of 78 is: 8.8317608663278468547640427269593.
This number is closer to the number 9.
Step-by-step explanation:
Use calculator to find square root. Then round it up.
Hope this helps!
If not, I am sorry.
Durante una venta de liquidación, el Sr. Pablo, un profesor particular, compró un total de 12 libros de asesoría de Secundaria 4 y Secundaria 1 por S/82. El precio de un libro de asesoría de Secundaria 4 era de S/ 8 y el precio de un libro de asesoría de
Secundaria 1 era de S/ 6. Que el número de los libros de asesoría de Secundaria 1 comprados sea “k”.
a) Expresa el número de libros de asesoría de Secundaria 4 comprados en términos de “k”.
b) Forma una ecuación en “k' y resuélvela, calculando la cantidad de libros de cada tipo que compró el Sr.Pablo
Resolviendo un sistema de ecuaciones, vemos que se venden 6 libros de secundaria 4 y 6 libros de secundaria 1.
¿Como escribir un sistema de ecuaciones?
Primero definimos dos variables:
x = numero de libros de secundaria 4 vendidos.k = número de libros de secundaria 1 vendidos.Sabemos que se venden 12 libros en total, entonces:
x + k = 12
Tambien sabemos que se recauda un total de $82, entonces:
x*$8 + k*$6 = $82
Entonces tenemos dos ecuaciones.
a) Usando la primer ecuacion, podemos aislar x para tener:
x = 12 - k
b) Ahora podemos reemplazar eso en la otra ecuación para solucionar el sistema.
(12 - k)*$8 + k*$6 = $82
$96 - $2*x = $82
$2*x = $12
x = $12/$2 = 6
Es decir se venden 6 libros de secundaria 4, y como se venden 12 libros en total, los otros 6 libros vendidos son de secundaria 1.
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find the are of the rectangle
Answer:
126 ft^2
Step-by-step explanation:
The area of a rectangle is just its length times its width. We are given that the length is 14 ft, and the width is 9 ft. If we multiply the two quantities, we get that the area is 14*9 or 126 ft^2
Answer: 126ft^2
Step-by-step explanation:
area of rectangle=length*width
here
length=14 ft
width=9ft
area=14*9
area= 126 ft^2
What is the equation of the line shown above?
Answer:
[tex]a.) y=\frac{1}{4} x+3[/tex]
Step-by-step explanation:
Any two points along the line are (4,4) and (0,3),
[tex]Gradient= \frac{4-3}{4-0}=\frac{1}{4}[/tex]
we know the y intercept is 3
Therefore equation of the line is : [tex]y=\frac{1}{4} x+3[/tex]
The vertex of the graph of f(x)=|X-3|+6 is located at
The vertex of the graph of f(x)= |x-3|+6 is located at (3, 6)
How to determine the vertex?The equation of the function is given as:
f(x) = |x - 3| + 6
The above function is an absolute value function.
An absolute value function is represented as:
f(x) = a|x - h| + k
Where:
Vertex = (h, k)
By comparison, we have:
Vertex = (3, 6)
Hence, the vertex of the graph of f(x)= |x-3|+6 is located at (3, 6)
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Select all of the options which are examples of expenditure.
The Torrey family was on vacation. One day, they spent $140 for a motel room, $130 for meals, and $200 at a park. How much money did they spend that day?
Answer:
$470
Step-by-step explanation:
Add all the amounts given.
200+140+130=470
They spent $470 that day.
Hope this helps!
If not, I am sorry.
Answer:
470
Step-by-step explanation:
140+130+200= 470
They said that day, which means all together. So we add.
Which set of ordered pairs has the same slope as the given set: (2,9) (1,12)?
The slope(m) of the given set is -3.
What is the slope of a pair of the ordered set?The slope(m) of a pair of the given ordered set is the change in the rise over the run. The rise is the y-axis while the run is the x-axis.
Mathematically;
[tex]\mathbf{Slope(m) = \dfrac{\Delta y}{ \Delta x}}[/tex]
[tex]\mathbf{Slope(m) = \dfrac{y_2-y_1}{x_2-x_1} }[/tex]
Here:
x_1 = 2y_1 = 9x_2 = 1y_2 = 12[tex]\mathbf{Slope(m) = \dfrac{12-9}{1-2} }[/tex]
[tex]\mathbf{Slope(m) = \dfrac{3}{-1} }[/tex]
Slope (m) = -3
Therefore, we can conclude that the slope of the given set is -3. From the given option, kindly find out which of the slope is equivalent to -3.
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The president of a company create a graph of the price of the company stock over one year he describes the graph as following the price of the stock Rose two about $17 before falling to about three dollars they have only been two periods during which the price of the stock decrease the price of the stock is expected to increase in the long run which graph correctly shows the price of the stock
The price of the stock is expected to increase in the long run correctly describes it and is denoted as option D.
What is a Graph?This is defined as the pictorial representation of date or variables in an organized manner.
From the graph provided , we can infer that after a while the stock began to rise which is the same as it increasing in the long run.
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Which of the following are not polynomials?
A. x² +2√x+1
B.x²+x+1
C. 2/3x2+x+1
D. x2+√2x+1
E. x-2+x+1
Answer: A, C, E
Step-by-step explanation:
These are not polynomials because there is one term where the variable has an exponent that is not a positive integer.