Clear the absolute-value bars by splitting the equation into its two cases, one for the Positive case and the other for the Negative case.
The Absolute Value term is |x|
For the Negative case we'll use -(x)
For the Positive case we'll use (x)
-(x) < 5
Multiply
-x < 5
Multiply both sides by (-1)
Remember to flip the inequality sign
x > -5
Which is the solution for the Negative Case
(x) < 5
Which is the solution for the Positive Case
(-5,5)
\(One \: solution \: was \: found : \\ -5 < x < 5\)A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. She knows that Solution A is 65% salt and Solution B is 90% salt. She wants to obtain 150 ounces of a mixture that is 80% salt. How many ounces of each solution should she use?
The amount of solution A and B required are 60 and 90 ounces respectively.
Creating simultaneous equations for the problem:
Mass of solution A = a
Mass of solution B = b
a + b = 150 _____(1)
0.65a + 0.90b = 150×0.80
0.65a + 0.90b = 120 __(2)
From (1)
a = 150-b ____(3)
substitute (3) into (2)
0.65(150-b) + 0.90b = 120
97.5 - 0.65b + 0.90b = 120
0.25b = 120-97.5
0.25b = 22.5
b = 22.5/0.25
b = 90
a = 150 - b
a = 150 - 90
a = 60
Therefore , 60 ounces of solution A and 90 ounces of solution B is required.
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Put the steps in correct order to prove that if n is a perfect square, then n +2 is not a perfect square. Rank the options below. Lets assume m 1. Assume n= m, for some nonnegative integer m. If m=0, then n + 2 = 2, which is not a perfect square. The smallest perfect square greater than n is (m + 1) Expand (m + 1)2 to obtain (m + 1)2 = m2 + 2m +1 = n + 2m +1> n +2 +1> n +2. Hence, n+ 2 is not a perfect square.
If n is a perfect square, then n +2 is not a perfect square, then The correct order is: 1, 2, 3, 4, 5, 6.
Given,
Assume n= m, for some non-negative integer m.
If m=0, then n + 2 = 2, which is not a perfect square.
The smallest perfect square greater than n is (m + 1)
Expand (m + 1)2 to obtain (m + 1)2 = m2 + 2m +1 = n + 2m +1
Simplify to n +2 +1> n +2.
Hence, n+ 2 is not a perfect square.
If n is a perfect square, then n +2 is not a perfect square, then
The correct order is: 1, 2, 3, 4, 5, 6.
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A group of 70 people attended a ball game. There were four times as many children as adults in the group. Set up a system of equations that represents the number of adults and children who attended the game and solve the system to find the number of adults and the number of children who were in the group.
Answer:
4b+b=70
5b=70
b=14
Step-by-step explanation:
4(14)+(14)=70
My teacher said this is all due TODAY I need help ASAP please
Answer:
i love you :)
Step-by-step explanation:
you just have to mutliply the first one and sum both of them
(-15z + 6) + (5z - 2)
-15z + 6 + 5z -2
= -10z + 4
A number squared, then increased by 4, I need the equation.
a like that includes the points (s,-3) and (-8,-4) has a slope of 1/4.
The value of s in the point (s,-3) after using slope formula is -4.
What is slope?
Slope is a term used to define how steep a line is. The rise of a line over the run of a line, or the change in the vertical direction (y) over the change in the horizontal direction, is the definition of slope (x). The slope is the angle at which one is moving forward or backward when skiing down a hill or climbing a mountain. Depending on what it is, the slope may occasionally be fairly flat or extremely steep. The slope of an object indicates how steep it is. Slope knowledge is crucial for daily decision-making.
Using slope formula,
=> slope m = \(\frac{y_2-y_1}{x_2-x_1}\)
Now the given point is ,
\((x_1,y_1)=(s,-3) \\(x_2,y_2)=(-8,-4)\)
=> slope m= 1/4
=> \(\frac{1}{4}= \frac{-4+3}{-8-s}\)
=> \(\frac{1}{4} = \frac{-1}{-8-s}\)
=> -8-s=-4
=>-s=-4+8
=> -s=4
=> s =-4.
Hence the value of s is -4.
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A student has some $1 and $5 bills in his wallet. He has a total of 11 bills that are worth 35$. How many of each type of bill does he have?
Answer:
you would have six 5$ bills and 5 1$ bills
The difference between seven times a number and four more than four times the number
Answer:
4x + 4 - 7x
Step-by-step explanation:
Answer:
if number = x
4*x + 4 - 7*x
Michelle has 4 1/5 feet of yarn. She cuts the yarn into pieces that each measure 3/5 foot long. How many pieces of yarn did Michelle cut?
Answer: 7
Step-by-step explanation:
yarn = 4 1/5 = 21/5
measure of one piece = 3/5
no. of pieces of yarn = 21/5÷3/5
= 21/5×5/3
= 105/15 = 7
So the number of pieces of yarn cut will be 7
Answer:
7
Step-by-step explanation:
4.2' yarn
cut into 0.6' pieces
4.2/0.6 =7
What is the measure of the missing angle?
Answer:
B=23.19
Step-by-step explanation:
First, find the last side of the triangle using the Pythagorean theorem.
\(a^{2} +b^{2} =c^{2} \\21^{2} +9^{2} =c^{2} \\441+81=c^{2} \\\sqrt[3]{58}=c\)
Then, find the missing angle, lets name it B.
The angle B can be found using the inverse sine function.
B=arcsin(opp/hyp)
\(B=arcsin(\frac{9}{\sqrt[3]{58} } )\\B=23.19\)
What values of y and z make
The values of y and z that make the triangles to be congruent are 13 each
Calculating the values of y and zFrom the question, we have the following parameters that can be used in our computation:
The triangles
For the two triangles to be congruent, the following equations must be true
2y = y + 13
y + 5z - 20 = 2y + z + 19
When the above equations are evaluated, we have
y = 13
Next, we have
4z = y + 39
So, we have
4z = 13 + 39
Add and divide by 4
z = 13
Hence, the values of y and z are 13
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Quadrilateral MNPQ is rotated at 90 degrees counterclockwise about the origin and then rotated 270 degrees counterclockwise about the origin
After the double rotation, the vertices of the quadrilateral MNPQ are transformed to M'', N'', P'', and Q''. The shape of the quadrilateral may have changed, but the order of the vertices remains the same.
When a quadrilateral MNPQ is rotated counterclockwise at 90 degrees about the origin, each vertex undergoes a transformation.
The new positions of the vertices after this rotation can be denoted as M', N', P', and Q'. The order of the vertices remains the same.
Next, when the rotated quadrilateral M'N'P'Q' is further rotated counterclockwise at 270 degrees about the origin, each vertex undergoes another transformation.
The new positions of the vertices after this rotation can be denoted as M'', N'', P'', and Q''. Again, the order of the vertices remains the same.
It's important to note that a 270-degree counterclockwise rotation is equivalent to a 90-degree clockwise rotation.
The result of the double rotation is equivalent to a single clockwise rotation of 90 degrees.
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I need help with a math question Ags2
Answer:
We are simply manipulating the equation: a = bh//2 to solve for the h. So we divide both sides of this equation by 1/2b to isolate the h variable and get: h(a) = 2a/b.
Step-by-step explanation:
What is the distance between point A and point B?
Answer:
13 units
Step-by-step explanation:
It's literally a number line, you can count each mark if you have to or just do 7+6
The options are <,>,=
Answer:
<
Step-by-step explanation:
una persona tiene 6 chaquetas y 10 pantalones. de cuántas formas distintas puede combinar estas prendas?
The total number of combinations is given as follows:
60.
What is the Fundamental Counting Theorem?The Fundamental Counting Theorem states that if there are m ways for one experiment and n ways for another experiment, then there are m x n ways in which the two experiments can happen simultaneously.
This can be extended to more than two trials, where the number of ways in which all the trials can happen simultaneously is the product of the number of outcomes of each individual experiment, according to the equation presented as follows:
\(N = n_1 \times n_2 \times \cdots \times n_n\)
The parameters for this problem are given as follows:
\(n_1 = 6, n_2 = 10\)
Hence the total number of combinations is given as follows:
6 x 10 = 60.
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Calculate the loss on selling 50 shares of stock originally bought at 13 3/4 and sold at 12
The loss on selling 50 shares of stock would be 87.50.
To calculate the loss on selling 50 shares of stock originally bought at
\(13\frac{3}{4}\) and sold at 12, we need to determine the difference between the purchase price and the selling price, and then multiply it by the number of shares sold.
First, let's convert the purchase price from a mixed fraction to a decimal. \(13\frac{3}{4}\) can be expressed as 13.75.
Next, we calculate the difference between the purchase price and the selling price:
\(13.75 - 12 = 1.75.\)
Finally, we multiply the difference by the number of shares sold:
\(1.75 \times50 = 87.50.\)
Therefore, the loss on selling 50 shares of stock would be 87.50.
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Find the tangents of the acute angles in the right triangle. Write each answer as a fraction.
As a result, angle J's tangent is 3/5 and angle K's tangent is 5/3.
What makes a triangle?A polygon with 3 sides and 3 vertices is called a triangle. It belongs to the most basic geometric shapes. The supplied object is indeed a triangle with equilateral triangles that has edges A, B, and C. the triangle shape.
We may use the tangential function to figure out the tangents of a acute angles inside a right triangle having legs that are 3 and 5 and a hypotenuse that is L in length.
To start, we may employ the Pythagorean theorem to determine the hypotenuse's length:
\(L^2 = 3^2 + 5^2\)
\(L^2 = 9 + 25\)
\(L^2 = 34\)
L = √34
To find the tangents of an acute angles, we may now utilize the concept of tangent, which really is opposite over adjacent:
tan J = opposite/adjacent = 3/5
tan K = opposite/adjacent = 5/3
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In a sample of 560 adults, 336 had children. Construct a 95% confidence interval for the true population proportion of adults with children.
Give your answers as decimals, to three places
< p <
What is the expected value of �?
The confidence interval is 0.559 < p < 0.641 and expected value is 0.600
Confidence IntervalTo construct a confidence interval for the true population proportion, we can use the formula:
p ± Z * √((p × (1 - p)) / n)
Where:
p = sample proportion (336/560)
Z = critical value for the desired confidence level
95% confidence = Z-value of approximately 1.96
n = 560
Let's calculate the confidence interval:
p = 336/560 ≈ 0.600
Z ≈ 1.96 (for a 95% confidence level)
n = 560
Plugging these values into the formula:
p ± Z × √((p × (1 - p)) / n)
0.600 ± 1.96 × √((0.600 × (1 - 0.600)) / 560)
0.600 ± 1.96 × √((0.240) / 560)
0.600 ± 1.96 × √(0.0004285714)
0.600 ± 1.96 × 0.020709611
0.600 ± 0.040564459
The confidence interval is:
0.559 < p < 0.641
Therefore, the 95% confidence interval for the true population proportion of adults with children is 0.559 < p < 0.641.
The expected valueFor proportions, the expected value is simply the sample proportion, which is approximately 0.600.
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The fifth-grade teachers at Washington High School are decorating bulletin boards to get
ready for the new school year. They have 4 large bulletin boards that each need 9 yards of
border. There is also a small bulletin board that only needs 12 feet of border. If border is sold
in 40-foot rolls, how many rolls will the teachers use?
The teacher will use 3 rolls only to have perfect measurements.
1 yard = 3 feet
4 large bulletin boards are there each needing 9 yards of border.
That means 4 large bulletin boards in total need
9×4 yards of border
= 36 yards of border
= 108 feet of border
Also, there is a small bulletin board that only needs 12 feet border
Hence, in total there is a need for
108 + 12 = 120 feet border.
The border is sold in 40-foot rolls.
Hence, there is a need for 120/40 rolls
i.e. 3 rolls
Hence, the teacher will use 3 rolls only.
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Answer:
The answer is 3
Step-by-step explanation:
identify which equations have one solution, infinitely many solutions, or no solution 3u+40+2u=6u-30-u
Answer:
I did the math there is no answer
What is the surface area of the triangular prism shown?
9514 1404 393
Answer:
(b) 976 m³
Step-by-step explanation:
The total surface area is the sum of the areas of the faces and bases.
The two bases are triangles, each with area ...
A = 1/2bh
So, the two of them together will have an area of ...
A = 2(1/2)bh = bh
where b is the base of the triangle, and h is its height. These values are shown as 14 m and 24 m, respectively.
Total base areas = (14 m)(24 m) = 336 m²
__
The total area of the rectangular faces is the sum of products of length and width. The width of each face is the same as the height of the prism, and the sum of face lengths is the perimeter of the triangular base.
The prism height is 10 m, and the perimeter of the base triangle is (14 m +25 m +25 m) = 64 m. Then the lateral area of the prism is ...
Total lateral area = (10 m)(64 m) = 640 m²
So, the total surface area of the prism is ...
base area + lateral area = 336 m² + 640 m² = 976 m²
Is the answer correct in this question
Answer:
Yeah, you got the answer right.
Step-by-step explanation:
A tennis player makes a successful first serve 49% of the time. If she serves 6 times, what is the probability that she gets exactly 3 first serves in? Assume that each serve is independent of the others.
Answer: the naswer is 0.154
Step-by-step explanation:
Let's roll two dice and find the probability of rolling a certain sum. Is this a simple or compound event?
Two dice - Red and Blue
Recall that a simple event has one and only one outcome of interest. In this example, we are rolling two dice, but we are only interested in one outcome, the sum of the two dice. This is a simple event.
What is the probability of:
Rolling a sum of 1?
Rolling a sum of 3?
Rolling a sum of 12?
Rolling a sum of 7?
Since we are rolling a pair of dice and looking for the sum, the sample space is a little more complicated than rolling one die. The chart below will help us determine the possible outcomes. The top row indicates the numbers on the sides of the blue die and the first column represents the number on the sides of the red die. The white area indicates the sum of the numbers in the row and column.
# Rolled 1 2 3 4 5 6
1 1+1=2
1
+
1
=
2
1+2=3
1
+
2
=
3
1+3=4
1
+
3
=
4
1+4=5
1
+
4
=
5
1+5=6
1
+
5
=
6
1+6=7
1
+
6
=
7
2 2+1=3
2
+
1
=
3
2+2=4
2
+
2
=
4
2+3=5
2
+
3
=
5
2+4=6
2
+
4
=
6
2+5=7
2
+
5
=
7
2+6=8
2
+
6
=
8
3 3+1=4
3
+
1
=
4
3+2=5
3
+
2
=
5
3+3=6
3
+
3
=
6
3+4=7
3
+
4
=
7
3+5=8
3
+
5
=
8
3+6=9
3
+
6
=
9
4 4+1=5
4
+
1
=
5
4+2=6
4
+
2
=
6
4+3=7
4
+
3
=
7
4+4=8
4
+
4
=
8
4+5=9
4
+
5
=
9
4+6=10
4
+
6
=
10
5 5+1=6
5
+
1
=
6
5+2=7
5
+
2
=
7
5+3=8
5
+
3
=
8
5+4=9
5
+
4
=
9
5+5=10
5
+
5
=
10
5+6=11
5
+
6
=
11
6 6+1=7
6
+
1
=
7
6+2=8
6
+
2
=
8
6+3=9
6
+
3
=
9
6+4=10
6
+
4
=
10
6+5=11
6
+
5
=
11
6+6=12
6
+
6
=
12
How many outcomes are in the sample space? Answer
Answer:
the answer to your question how many outcomes is really gonn adepend on you you slove you problem but my amswer is gonna be 7.
In a dart game, Awasin and Tally each threw the darts 10 times. Tally
had three (+2) scores, three (-3) scores and four (+1) scores. Awasin had
four (+2) scores, four (-3) scores, and two (+1) scores. The winner had the
greater score. Who won the game and what was their score?
Tally won the dirt throwing game and his score was 1.
What is a numerical expression?A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.
From the given information, The score of Tally is,
= 3×2 - 3×3 + 4×1.
= 6 - 9 + 4.
= 1.
The score of Awasin is,
= 4×2 - 4×3 + 2×1.
= 8 - 12 + 2.
= - 2.
So, Tally won the game and his score is 1.
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find the percent from 62 to 7
Answer:
66.34
Step-by-step explanation:
if my calculations are correct it should be 66.34
The answer should be 66.34
what is the length of segment BC?
you got an equation or a pic?
Jordan will hike the trail shown at a rate of mi/h. Write a linear equation to represent the distance Jordan still has to walk after x hours. What does the y-intercept of the equation represent?
If y represents the distance Jordan still has to walk after x hours, then the equation ? describes the given situation.
(Type your answer in slope-intercept form.)
Answer:
y = (-mi/h)x + b
y = total distance left to cover
-mi/h = speed at wich he is covering ground
b = the total distance to cover from start to finish
Step-by-step explanation:
Slope Intercept form without other variables filled is shown like this with mx being the slope and b being the y intercept
y = mx + b
all we need to do is fill in known variables with hours multiplied by x represented as m...
y = (-mi/h)x + b
note the negative symbol, this shows that the higher that miles an hour (mi/h) aka speed is, the more distance he will cover REDUCING the distance to cover faster meaning the line will slope DOWNWARD
b would be the the total distance that he has started with, meaning on the point where the line crosses the y axis, the number it crosses at will represent how much he has started with
Set of whole numbers from 1 to 10 inclusive greater than seven and odd
Answer:
{7, 9}
(Numbers from 1 to 10 equal to or greater than 7 are 7 and 9)
Step-by-step explanation:
We have to find the set of whole number greater than and equal to 7 from 1 to 10,
Now, From 1 to 10, the odd numbers are, 1,3,5,7,9,
And of these, 7 and 9 are equal to or greater than 7
So, we get the set,
{7, 9}