Answer:
[tex]\large\boxed{x=\dfrac{1}{4}}[/tex]
Step-by-step explanation:
[tex]-18x-x=5x-6\\\\-19x=5x-6\qquad\text{subtract}\ 5x\ \text{from both sides}\\\\-19x-5x=5x-5x-6\\\\-24x=-6\qquad\text{divide both sides by (-24)}\\\\\dfrac{-24x}{-24}=\dfrac{-6}{-24}\\\\x=\dfrac{6:6}{24:6}\\\\x=\dfrac{1}{4}[/tex]
Simplify the expression.
4[(10-4) ²÷4]
a. 6
b. 12
c. 9
d. 36
Answer:
Step-by-step explanation:
D 36 is the answer
what is 8 10/27-1 2/9?
Answer:
193/27
Step-by-step explanation:
8 10/27 - 1 2/9
226/27 - 11/9
= 193/27
PLEASE HELP ME WITH THIS AHHHH 15-(21)
Answer:
-6
Step-by-step explanation:
Answer:
Is it 15 Minus 21 (Or) 15 x -21
Step-by-step explanation:
A number of b divided by -3 is greater than or equal to 6
Answer: b ≤ -18
Step-by-step explanation:
Isolate the variable by multiplying both sides by -3. Remember that when you multiply or divide by a negativem the symbol flips.
[tex]\dfrac{b}{-3}\geq6\\\\\\\dfrac{b}{-3}(-3)\geq6(-3)\\\\\\\large\boxed{b\leq-18}[/tex]
find the area of a circle with a circumference of 37.68 units
[tex]\bf \textit{circumference of a circle}\\\\ C=2\pi r~~ \begin{cases} r=radius\\ \cline{1-1} C=37.68 \end{cases}\implies 37.68=2\pi r\implies \cfrac{37.68}{2\pi }=r \\\\\\ \stackrel{assuming~\pi =3.14}{\cfrac{37.68}{2(3.14)}}=r\implies \boxed{6=r} \\\\[-0.35em] ~\dotfill\\\\ \textit{area of a circle}\\\\ A=\pi r^2\qquad \qquad A=\pi (6)^2\implies A=36\pi \implies A\approx 113.10[/tex]
I need help with geometry
A linear pair is supplementary.
It always helps to draw out a diagram with the information you have - it makes the solving process more visual and sometimes easier. I have attached a diagram of this linear pair.
So, since a linear pair is supplementary, we know these two angles add to equal 180°. Let's write this in an equation.
(5n + 15) + (4n + 21) = 180
Solve for n.
(5n + 15) + (4n + 21) = 180
5n + 15 + 4n + 21 = 180
9n + 36 = 180
9n = 144
n = 16
We're not done yet - now we have to plug this in for n to find the angle measures.
5n + 15
5(16) + 15
80 + 15
95
4n + 21
4(16) + 21
64 + 21
85
Lastly, check your work by adding the angle measures.
95 + 85 = 180
Answer:m∠EFG = 95°
m∠GFH = 85°
Beau earns $26.50 per hour for regular hours worked and double
time for any overtime (over 40) he works. He is paid weekly. If he
worked 56.5 hours last week, how much can Beau expect that his
gross pay will be?
Answer:
$1694.5
Step-by-step explanation:
Hourly rate for Beau = $26.50
Weekly hours = 40 Hours
Basic earning = 26.50 × 40 = $820
Total number of hours Beau worked in week = 56.5 Hours
Overtime = 56.5 - 40 = 16.5 Hours
Overtime rate = 2 × Hourly rate = 2 × 26.50 = $53
Overtime earning = 53×16.5 = $874.5
Total earning for the week = 820 + 874.5 = $1694.5
Viola and Paige stand next to each other and kick soccer balls in the air. The
path of Viola's ball is described by the equation y=-3x2 + 6x + 3. The path of
Paige's ball is shown by the graph.
In each function, x is the horizontal distance the ball travels in meters, and y
represents the height.
Whose soccer ball reaches a greater height?
O
A. Both soccer balls reach the same height
O
B. Viola's soccer ball
O
C. Paige's soccer ball
Answer:
C. Paige's soccer ball.
Step-by-step explanation:
When you graph y = 3x^2 + 6x + 3, you can see that the max of the parabola is around 6. This is lower compared to Paige's soccer ball's max height shown in the image.
Answer:
C. Paige's soccer ballStep-by-step explanation:
To solve this problem, we just need to graph Viola's function to know the altitude she reached, and then compare it with Paige's altitude.
So, we know that Viola's function is [tex]y=-3x^{2}+6x+3[/tex], as an extra solution, we can calculate the vertex of this quadratic function, that will give us Viola's max altitude.
[tex]V(v_{x};v_{y})\\V(\frac{-b}{2a};f(v_{x} ))[/tex]
Where b and a are from the general quadratic function: [tex]y=ax^{2} +bx+c[/tex].
So, in this case, a = -3; b = 6. Replacing this values, we find the vertex:
[tex]V(\frac{-b}{2a};f(v_{x} ))[/tex]
[tex]v_{x}= \frac{-b}{2a}=\frac{-6}{2(-3)}=1[/tex]
Then, we use the function to calculate the vertical coordinate of the vertex:
[tex]v_{y}=f(1)=-3(1)^{2}+6(1)+3=-3+6+3=6[/tex]
Therefore, the max altitude reached by Viola is 6 meters.
Now, from the graph, we observe that Paige's max altitude is around 7.5 meters.
Therefore, Paige reached the higher height. The answer is C.
Drag and drop the answers into the boxes to correctly complete the statement.
A sequence of transformations that maps △RST to △R′S′T′ is a _____ followed by a _____
A. reflection across the x-axis
B. Translation 1 unit down
C. Reflection across the y-axis
D. Rotation of 180 degrees about the origin
Answer:
A sequence of transformations that maps △RST to △R′S′T′ is a Reflection across the x-axis followed by a Translation 1 unit down
Step-by-step explanation:
step 1
Find out the reflection of △RST across the x-axis
we know that
The rule of the reflection of a point across the x-axis is
(x,y) -----> (x,-y)
we have
R(1,3),S(1,1),T(4,1)
Applying the rule of reflection across the x-axis
R(1,3) -----> R''(1,-3)
S(1,1) -----> S''(1,-1)
T(4,1) ----> T''(4,-1)
step 2
Find out the translation of △R''S''T'' 1 unit down
The rule of the translation is
(x,y) -----> (x,y-1)
Applying the rule of the translation
R''(1,-3)-----> R'(1,-3-1)
R''(1,-3)-----> R'(1,-4)
S''(1,-1)----> S'(1,-1-1)
S''(1,-1)----> S'(1,-2)
T''(4,-1) ----> T'(4,-1-1)
T''(4,-1) ----> T'(4,-2)
therefore
A sequence of transformations that maps △RST to △R′S′T′ is a Reflection across the x-axis followed by a Translation 1 unit down
1-5 Skills Practice
Descriptive Modeling and Accuracy
1. TEST SCORES A teacher compares the ratio of the number of questions answered correctly to the
total number of questions on a test as a metric. For a student to earn and A or B on a test, the ratio
must be greater than or equal to 0.8. The last test given by the teacher had a total of 40 questions.
Using this metric, what is the least number of questions a student can answer correctly and earn an
A or B on the test?
number of questions answered correclty
Ratio to earn an A or B - -
number of questions
Answer:
The least number of questions a student can answer correctly is 32
Step-by-step explanation:
Let
x -----> the number of questions answered correctly
y ----> the total number of questions on a test
[tex]ratio=\frac{x}{y}[/tex]
we know that
For a student to earn and A or B on a test, the ratio must be greater than or equal to 0.8
so
[tex]\frac{x}{y} \geq 0.8[/tex]
For y=40 questions
Find the value of x
substitute
[tex]\frac{x}{40} \geq 0.8[/tex]
solve for x
Multiply both sides by 40
[tex]x \geq 0.8(40)[/tex]
[tex]x \geq 32[/tex]
so
The least number of questions a student can answer correctly is 32
Verify the ratio
For x=32, y=40
[tex]\frac{32}{40}=0.8[/tex]
Compare
[tex]0.8 \geq 0.8[/tex] ----> is ok
Final answer:
This math question involves determining the minimum number of questions a student needs to answer correctly to earn an A or B grade based on a specific ratio criterion.
Explanation:
Mathematics: In this question, we are dealing with a scenario where a teacher evaluates students' test performance based on a specific ratio criterion to determine if they earn an A or B grade. The focus is on determining the minimum number of questions a student must answer correctly to achieve the desired grades.
Step-by-step explanation:
Given that the ratio of correct answers to the total questions must be greater than or equal to 0.8 to earn an A or B.
We know the total number of questions on the test is 40.
To find the least number of questions a student must answer correctly, we calculate 0.8 x 40 = 32.
Therefore, the student needs to answer at least 32 questions correctly to earn an A or B on the test.
If t = -3, then 3t2 +5t+6 equals
If ( t = -3 ), then [tex]\( 3t^2 + 5t + 6 \)[/tex] equals 0.
To find the value of [tex]\( 3t^2 + 5t + 6 \)[/tex] when ( t = -3 ), substitute (-3) for ( t ) in the expression:
[tex]\[ 3(-3)^2 + 5(-3) + 6 \][/tex]
= 3(9) - 15 + 6
= 27 - 15 + 6
= 12 - 15
= -3
Therefore, when ( t = -3 ), \[tex]( 3t^2 + 5t + 6 \)[/tex] evaluates to (-3).
Understanding how to substitute values into algebraic expressions is fundamental in algebra. In this case, replacing ( t ) with (-3) allows us to find the specific value of the expression for that given input.
It's worth noting that this expression equals 0 for ( t = -3 ). This is an interesting mathematical result, indicating that the expression [tex]\( 3t^2 + 5t + 6 \) factors as \( (t + 3)(3t + 2) \),[/tex] making it equal to 0 when either \[tex]( t = -3 \) or \( t = -\frac{2}{3} \).[/tex] This connection between factors and roots is a crucial concept in algebra.
A bag contains 7 red marbles, 5 yellow marbles, 6 blue marbles, 4 green marbles, and 3 orange marbles. What is the probability of randomly selecting a yellow marble out of the bag?
A . 1/5
B . 1/2
C . 3/5
D . 3/4
Answer:
A. 1/5
Step-by-step explanation:
Add all the numbers up, you get 25. There is 5 yellow marbles, so that's a 5/25 chance of picking a yellow one, now you just have to simplify, you then get 1/5, because 5 ÷ 5 is 1, and 25 ÷ 5 is 5.
The first term of an AP is -1/2 and it's common difference is 4. Find the 9th term
Answer:
[tex]\frac{63}{2}[/tex]
Step-by-step explanation:
The n th term of an arithmetic progression is
[tex]a_{n}[/tex] = a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Here a₁ = - [tex]\frac{1}{2}[/tex] and d = 4, thus
[tex]a_{9}[/tex] = - [tex]\frac{1}{2}[/tex] + (8 × 4) = - [tex]\frac{1}{2}[/tex] + 32 = [tex]\frac{63}{2}[/tex]
what is (68x95)+90÷10=
Hey!
--------------------------------------------
Solution:
Remember to follow PEMDAS.
= (68 * 95) + 90 / 10
= (6,460) + 90 / 10
= 6,460 + 9
= 6,469
--------------------------------------------
Answer:
6,469
--------------------------------------------
Hope This Helped! Good Luck!
In order to find the answer to the question you will have to use PEMDAS and then solve.
[tex](68\times95)+90\div10[/tex]
Using PEMDAS:
[tex]68\times95=6460[/tex]
[tex]6460+90\div10[/tex]
[tex]90\div10=9[/tex]
[tex]6460+9[/tex]
[tex]6460+9=6469[/tex]
[tex]=6469[/tex]
Therefore your answer is "6469."
Hope this helps.
The length of a rectangle is represented by (6x - 2), and the width is represented by (x - 1). Which expression best represents
the perimeter of the rectangle?
Answer:
2(6x - 2 + x - 1) = 2(7x - 3) = 14x - 6
Two angles are complementary. If one angle is 4 times larger than other one then what is the measure of the smaller
angle?
Answer:
The smaller angle is 18 degrees
The larger angle is 72 degrees
Step-by-step explanation:
x = smaller angle
y = larger angle
y = 4x ---> one angle is 4 times larger than other one.
y + x = 90 ----> the sum of complementary angles is 90 degrees
4x + x = 90 ----> plug in 4x for the larger angle (y) and then solve
5x = 90
x = 18 ----> the smaller angle is 18 degrees
y = 90 - 18
y = 72 ----> the larger angle is 72 degrees
The smaller angle is 18.
What is the complementary angle?The complementary angle is the angle that adds up to 90 degrees always, so when we say that two angles are complementary it means that the sum of the angle or the combined angle is equal to ninety degrees.
The solution to the problemThe larger angle is 4 times the smaller angle so let the smaller angle be 'x' and the larger angle be 4x.
Hence the sum of both the angle is 90 degrees from the definition of complementary
so 4x+x=90, 5x = 90
dividing the equation by 5
x = 18
Hence the smaller angle is 18 degrees
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Four people invested in a restaurant. One person invested $100,000. Two others invested in
the ratio x:2x, and the fourth person invested an amount equal to the other three investors
combined. The total investment was $ 1,100,000.
Part A
Write an expression for the amount invested by the fourth person.
Answer:
x=$150,000
4th person invested $550,000
Step-by-step explanation:
100,000+x+2x+(100,000+x+2x)=1,100,000
200,000+6x=1,100,000
6x=900,000
x=150,000
The investment of the fourth person is 100,000+3x
=100,000+450,000
=$550,000
The amount invested by the fourth person was $550,000.
What is Ratio?The ratio is defined as a relationship between two quantities, it is expressed as one divided by the other.
Given that a person invested $100,000. Two others invested in the ratio x:2x and the fourth person invested an amount equal to the other three investors combined.
We have to determine an expression for the amount invested by the fourth person.
The total investment = $1,100,000.
So an expression for the amount invested by all people as:
⇒ 100,000 + x + 2x + (100,000+x+2x) = 1,100,000
⇒ 200,000 + 6x = 1,100,000
⇒ 6x = 900,000
⇒ x = 150,000
So the investment of the fourth person as
⇒ 100,000 + 3x
⇒ 100,000 + 450,000
⇒ $550,000
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A rectangle has a height of 3 and a width of 4b^4+2b-6.
Express the area of the entire rectangle.
Answer:12b^4 + 6b - 18
Step-by-step explanation:
Area of a rectangle is width x height
(4b^4 + 2b - 6) x 3
Multiply the coefficients by 3
So you get
12b^4 + 6b - 18
I need help on number 2.
Greetings!
This is how your double number line should look:
(lbs) 0 1 2 3 4 5
↓-----↓-----↓-----↓-----↓-----↓
0 3.5 7 10.5 14 17.5 (dollars)
Hope this helps!
Order these numbers from Least to Greatest 4,209 2,438 4,703 3,026
2,438 3,026 4,209 4,703
Answer: 2,438 3,026 4,209 4,703
Step-by-step explanation:
A triangle has sides with lengths of 5x – 7,
3x -- 4, and 2x – 6. What is the simplified
expression for the perimeter of the triangle?
Answer:
10x - 17
Step-by-step explanation:
Perimeter is the sum of all sides
5x - 7 + (3x - 4) + (2x - 6)
10x - 7 - 4 - 6
10x - 17
Find the exact radius of a circle with circumference 28pi meters.
Answer: The radius is 14 units.
Step-by-step explanation:
Start by finding the diameter, the formula for circumference is πd, So set up an equality:
28π=c
28π=πd
Divide both sides by π:
28π/π = 28πd/π
Cross out π:
28 = d
diameters twices largest radius, divide your diameter by 2 to get radius.
D/2 = r = 28/2 = 14
Therefore, your radius is 14 units.
Which of the following pollygons cannot be used to form a regular tessellation
Answer:
B and C
Step-by-step explanation:
it is not like the other 3look at the angle sumthe angle sum of the interior angles of the regular polygons at a point add up to 360 degrees.looking at what I wrote in 3 we can see clearly why those polygons cannot tessellate .the sums of the interior angles are either greater than or less than 360 degrees .Draw a diagram that shows 0.27+0.23= 1/2
Answer:
The required diagram is shown below:
Step-by-step explanation:
Consider the provided expression.
0.27+0.23= 1/2
We can draw the model of the provided expression.
Step 1: Shade 27 boxes out of 100 boxes,
This will show 0.27
Step 2: Shade 23 more boxes with another color.
This will show 0.23.
The total shaded boxes are 27+23=50.
Which represents 0.27 + 0.23 = 1/2 (1/2=0.50)
The required diagram is shown below:
To visually show the equation [tex]\(0.27 + 0.23 = \frac{1}{2}\)[/tex], see the diagram attached.
What is the diagramTo represent the equation [tex]\(0.27 + 0.23 = \frac{1}{2}\)[/tex], follow the steps:
1. Draw a horizontal line to represent the number line.
2. Label the line with points 0, 0.2, 0.4, 0.6, 0.8, and 1.
3. Mark a point at 0.27, slightly past the midpoint between 0.2 and 0.4.
4. Mark another point at 0.23, slightly before the midpoint of 0.2 and 0.4.
5. Draw a vertical line connecting these two points to represent their sum.
6. Label the top of this line with "0.27 + 0.23."
7. Draw a horizontal line segment from the vertical line's top point to the middle of the line, intersecting at the value 0.5.
8. Label this intersection point as [tex]"\(\frac{1}{2}\)"[/tex] to show that [tex]\(0.27 + 0.23\)[/tex]indeed equals[tex]\(\frac{1}{2}\).[/tex]
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0.282828 to nearest tenth
Answer:
0.3
Step-by-step explanation:
7 is greater than 5 therefore round the tenths value up to 3
a certain fish can swim 6 1/2 times faster than a person. if a person can swim 5 4/7 miles per hour, how fast can the fish swim?
Answer: 36 3/14 miles per hour
Step-by-step explanation:
multiply the speed of a human (5 4/7) by 6 1/2 or 6.5 and you get your answer
To find the fish's speed, convert the mixed numbers 5 4/7 and 6 1/2 to improper fractions and multiply them. The result, 507/14, converts back to a mixed number as approximately 36.21 miles per hour.
Explanation:To solve this question, we need to multiply the person's swimming speed with the mentioned relative speed of the fish. A person can swim at a speed of 5 4/7 miles per hour, and since the fish can swim 6 1/2 times faster, we multiply 5 4/7 by 6 1/2.
The first step is to convert these mixed numbers to improper fractions. 5 4/7 becomes 39/7 and 6 1/2 becomes 13/2.
Multiplication of fractions involves multiplying the numerators together to get the new numerator and the denominators together to get the new denominator. So the multiplication (39/7)*(13/2) leads to a result of 507/14.
This can be now converted back to a mixed number, giving us an approximate answer of 36.21. Therefore, the fish swims at a speed of approximately 36.21 miles per hour.
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least to greatest 2/3, 3/5, 13/15, 2/5
Answer: 2/5 3/5 2/3 13/15
Step-by-step explanation:
2/3, 3/5, 13/15, 2/5
The least common denominator is: 15.
Rewriting as equivalent fractions with the LCD:
10/15, 9/15, 13/15, 6/15
Ordering these fractions by the numerator in order from least to greatest:
6/15 < 9/15 < 10/15 < 13/15
Therefore, your input in order from least to greatest is:
2/5 < 3/5 < 2/3 < 13/15
Find the area of the region that is NOT shaded .
146 ft^2
122 ft^2
90 ft^2
234 ft^2
Answer:
122 ft^2.
Step-by-step explanation:
This area can be divided into 2 rectangles:
One of size 14 * 4 = 56 ft^2 and
another of size (15 - 4)* 6 = 66ft^2
Total 66 + 56 = 122 ft^2.
Answer:
Step-by-step explanation:
Let's start with the bigger portion of the non-shaded area.
It is 15*6 because it is showing us that the distance between the non-shded area and the shaded area is 6 feet, if we slide that over, it is exactly what we need. So...
15*6=90 feet
Now, the smaller part. BTW, we are pretending there is a line from the bottom left corner of the shaded, straight across to the real line at the 14.
That being said, we need to subtract 6 from 14 to get the dimension.
So...
14-6= 8 feet.
It tells us that the width is 4 feet.
8*4= 32.
Now we have to add. 32+90=122feet squared.
making the answer, B
Hope this helps!!!
Brady
What happens to the graph f(x) = |x/, when f(x) is replaced by 0.3 f(x) +9
Answer:
Step-by-step explanation:
First, the graph is flattened, and secondly, the whole resulting graph is translated upward by 9 units.
What is the sum of 308, 622 and 381.
Answer:
755
Step-by-step explanation:
The sum of 308+622+381=755
The sum of the numbers 308,622, and 381 is 755.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that the numbers are 308, 622 and 381. The sum of the numbers will be calculated by adding all the numbers as below,
Sum = 308+622+381
Sum = 755
Hence, the sum of the numbers will be 755.
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