Answer:The percent decrease was 15%
Step-by-step explanation:
In order to find this, use the percent change equation.
(New - Old)/(Old) * 100 = % Change
Now input 149.42 for the New price and 175.80 for the Old price.
(149.42 - 175.80)/(175.80) * 100 = % Change
-26.38/175.80 * 100 = % Change
-.15 * 100 = % Change
-15 = % Change
Step-by-step explanation:
15 POINTS pre algebra I think
Answer:
28.6 (90% sure)
Step-by-step explanation:
To solve this work backwards
[tex]D_{3}[/tex]=42
[tex]D_{2}[/tex]=42*.80 = 33.6
[tex]D_{1}[/tex]=33.6-5 = 28.6
Type the symbol in the box. 8 /10_ 80/100
Answer:
They are equivalent because they both equal .8 no matter what
Step-by-step explanation:
[tex]\rm The\; \bold {answer}\; is\; the \; expresion \;\;\;\dfrac{8}{10} = \dfrac {80}{100}[/tex]
What is a mathematical expression ?An expression is a combination of numbers, variables, functions (such as addition, subtraction, multiplication or division etc.)
An expression is a sentence with a minimum of two numbers or variables and at least one math operation. This math operation can be addition, subtraction, multiplication, or division.
A math expression is different from a math equation. An equation will always use an equal (=) operator between two math expressions.
Expression is (Number/variable, Math Operator, Number/variable)
Here in the given question The left hand side can be simplified to
0.8 and the right hand side can also be simplified to 0.8.
Therefore
[tex]\rm \dfrac{8}{10}\;\;\;\;\bold{ \underline{=}} \;\;\;\;\dfrac {80}{100}[/tex]
To know more about mathematical expression
https://brainly.com/question/14462529
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HELP
What is the axis of symmetry for the parabola shown?
A)
x = 0
B)
x = 2
C)
y = 1
D)
y = -3
A cell phone company recently noticed a 30% sales decrease in the month of July compared to June. Let n represent June's sales. If y represents July's sales, which equation can be used to determine the sales in July?
A. n=y-0.30y
B. y=n-0.30n
C. y=n+0.30n
D. y=n-0.30
What is the sum of the geometric series
'' In math, a geometric series is a series with a constant ratio between successive terms.
Need help with this math question pls help me will mark brainiest btw
Answer:
c
Step-by-step explanation:
Easy question! TOTALLY not a lot of points!
Find the scale factor for the figure below.
Too easy XD I don’t remember how to do that T-T
What is the result when you combine only the constants in the following expression? 3 a minus 6 b + 3 minus 7 a + 10
PLZ HURRY
Answer:
3a - 6b - 7a + 13
Step-by-step explanation:
srry if Im wrong
Answer:
13
Step-by-step explanation:
Its asking for the constants and the constants in the equation are 3 and 10
So 3+10= 13
solve for x round your answer to the nearest tenth
Answer:
13.7
Step-by-step explanation:
Pythagorean theorem converse
Answer:
The value of x is 13.7.
Step-by-step explanation:
☆We are going to use the Pythagorean theorem to solve this.
☆Pythagorean Theorem:
[tex] {a}^{2} + {b}^{2} = {c}^{2} [/tex]
☆Remmeber: a = leg, b = leg, c = hypotenuse or the diagonal.
☆Let's plug in according to the pythagorean theorem and solve!
[tex] {a}^{2} + {b}^{2} = {c}^{2} \\ {x}^{2} + {9.2}^{2} = {16.5}^{2} \\ {x}^{2} + 84.64 = 272.25 \\ \frac{ \: \: \: \: \: \: \: \: - 84.64 = - 84.64}{ {x}^{2} = \sqrt{187.61} } \\ x = 13.7[/tex]
Write the equation for the line that passes through the point (-3, 5) and is perpendicular to the x axis
Answer:
x = -3
Step-by-step explanation:
this slope is a straight, vertical line passing through (-3, 5)
hello! please help! will give brainliest to correct answer! will report if you troll... thank you:)
Complete the statements by filling in the blank. When constructing a confidence interval, to increase the level of confidence, you must ________ [increase/decrease] the margin of error and the confidence interval will be _________ [narrower/wider]. A larger sample size will improve the precision of the confidence interval, therefore, all things being equal, a larger sample size will result in a __________ [smaller/larger] margin of error and the confidence interval will be _________ [narrower/wider].
Answer:
Increase; wider; smaller; narrower.
Step-by-step explanation:
In Statistics, sampling can be defined as a process used to collect or select data (objects, observations, or individuals) from a larger statistical population using specific procedures.
A confidence interval can be defined as a measure of the number of times that a population parameter would be within a given set of data. Thus, it is an estimate of the uncertainty of a given statistical data.
When constructing a confidence interval, to increase the level of confidence, you must increase the margin of error and the confidence interval will be wider. A larger sample size will improve the precision of the confidence interval, therefore, all things being equal, a larger sample size will result in a smaller margin of error and the confidence interval will be narrower.
Hence, for an estimator to be consistent it must have both a small bias and small variance.
What are the factors of -7 pls explain!
Solve for n: 2n < 6
Math pls answer this
Answer:
n can be a number less than 3
Step-by-step explanation:
Hope this helps!
Answer:
N<3
Step-by-step explanation:
Find the value of x with shown work
Answer:
90
Step-by-step explanation:
Question 1
Determine if the relation shown is a function or not.
Y
2
8
4.
6
8
4
Answer:
No, it is NOT a function.
Step-by-step explanation:
A functions' inputs are assigned to exactly one output.
We are given the points:
{(8,2) (4,-3) (6,4) (8,1)}
The input of 8 is repeating.
The given relation is not a function.
Hope this helps!
Triangle DEF is shown below.
The triangle similar to DEF will have an angle that measures 80 degrees, an angle that measures 55 degrees, and an angle that measures 45 degrees.
Similarity of TrianglesTwo triangles are considered to be similar if their corresponding angles are congruent and sides are in proportion.
How to find angles if two triangles are similar?The triangle DEF is similar to any other triangle.
Consider the following figure.
So, [tex]100^{o} + x^{o} = 180^{o}[/tex]
[tex]x^{o} = 180^{o} - 100^{o}[/tex]
[tex]x^{o} = 80^{o}[/tex]
Also, [tex]y^{o} +135^{o} = 180^{o}[/tex]
[tex]y^{o} = 180^{o} -135^{o}[/tex]
[tex]y^{o} = 45^{o}[/tex]
The sum of all angles of a triangle is [tex]180^{o}[/tex].
So, angle D + angle E + angle F = [tex]180^{o}[/tex]
That is, [tex]80^{o}+z^{o} + 45^{o}=180^{o}[/tex]
Simplify further
[tex]z^{o} =55^{o}[/tex]
Thus, the triangle similar to DEF will have an angle that measures 80 degrees, an angle that measures 55 degrees, and an angle that measures 45 degrees.
Learn more about the similarity of triangles here-
https://brainly.com/question/25882965
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Answer:
Step-by-step explanation:
1=1
y= -3+ 2x
3x+2y=2
I need help ASAP
What the solution for this someone pls
What is...
1 + 1? this is for easy points
Whoever answers first gets brainliest!
Answer:
2
Step-by-step explanation:
Line segment EG is partitioned by point F in the ratio 1:1. Point E is at E (0, 4), and point F is at (1, 3). What are the coordinates of point G?
(−1, 5)
(2, 2)
(3, 1)
(4, 0)
Answer:
2,2
Step-by-step explanation:
I don't really know how to explain it, but if you plot E and F on a coordinate plane it would make more sense.
*Note that the ratio 1:1 is not the same as the fraction 1/1, rather, 1:1 = 1/2 so point F is like a midpoint of segment EG
The coordinates of point G is (2,2)
The coordinate points are given as:
[tex]E = (0,4)[/tex][tex]F = (1,3)[/tex]The ratio is given as:
[tex]m : n = 1 : 1[/tex]
Given that the ratio is 1 : 1, it means that, point F is at the midpoint of line segment EG
So, we have:
[tex]F =0.5 \times (x_1 + x_2, y_1 + y_2)[/tex]
This gives
[tex](1,3) =0.5 \times (0 + x, 4+ y)[/tex]
[tex](1,3) =0.5 \times (x, 4+ y)[/tex]
Multiply both sides by 2
[tex](2,6) =(x, 4+ y)[/tex]
By comparison, we have:
[tex]x = 2[/tex]
[tex]4 + y = 6[/tex]
[tex]y =2[/tex]
Hence, the coordinates of point G is (2,2)
Read more about line partitions at:
https://brainly.com/question/11280112
Please help me with the question
Answer:
....................
You have a bag of 15 marbles. 8 are red. 5 are blue. 2 are green. If you pull out two marbles without replacement, what is the probability that one, but not both, of them, will be blue?
a
33.3%
b
57.1%
c
66.6%
d
47.6%
Answer:
a 33.3 percent
Step-by-step explanation:
<hdhdhdhdhhdhdhdhdd
Answer:
D. 47.6%Step-by-step explanation:
GivenTotal marbles = 15Blue marbles = 5SolutionThere are two possible scenarios
1. First marble is blue and second marble is not blue:
P(blue) = 5/15 = 1/3P(not blue) = 10/14 = 5/7P(blue and not blue) = 1/3*5/7 = 5/212. First marble is not blue and second marble is blue:
P(not blue and blue) = 10/15*5/14 = 2/3*5/14= 5/21The probability that one, but not both, of them, will be blue:
5/21 + 5/21 = 10/21 = 0.476 = 47.6%Correct option is D
IF YOU ANSWER THE THE QUESTIONS I WILL MARK YOU THE BRAINILY PLSSS HELP
Answer:
4. Obtuse
5. Right
6. Acute
Step-by-step explanation:
Pythagorean Theorem.
a^2 + b^2 = c^2
a + b > c = Acute
a + b < c = Obtuse
a + b = c = Right
Simplify the expression:
10s+–2s
Answer:
8s
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
TermsStep-by-step explanation:
Step 1: Define
10s + -2s
Step 2: Simplify
Rewrite: 10s - 2sCombine like terms: 8sAnswer:
[tex]\huge\boxed{8s}[/tex]
Step-by-step explanation:
Expression can be broken down into a couple of parts.
A term (like 10s, or -2s)The variable (what the unknown value is being represented by, in this case, s)The coefficient (the number next to the variable, showing what to multiply the variable by - in this case, 10 and -2)When we have multiple terms with the same variable, we can perform operations on them assuming they have the same variable - for example, 5x + 6x = 11x, as 5+6=11.
We can apply the same logic here, however, note that adding a negative is the same as subtracting a positive. For example, 5 + -2 is the same as 5-2.
[tex]10 - 2 = 8[/tex]
Therefore, our final expression is [tex]8s[/tex].
Hope this helped!
Pls pls help I don’t have time HELP ASAP. It also detects if it’s right or wrong.
Answer:
B is the correct answer
Step-by-step explanation:
becasue if you solve this you get (0,0) (1,20) and (2,40) so b is the correct answer
Simplify:(4x2 - 2x) - (-5x2 - 8x).
yall dont gotta simplify this im just bored
Answer:
wsp?
Step-by-step explanation:
9x^2 + 6x
find the volume of a cuboid with base area 24cm and hieght 3cm
Step-by-step explanation:
base area×hieght
=24cm²×3cm
=72cm³
Answer:
0.72 m³
Step-by-step explanation:
Volume of a cuboid = area × height of cross section.
Given :
area of base = 24 m² .
height = 3 cm = 0.03 m
Hence the volume = 24 m² × 0.03 m
⇒ 0.72 m³
(I used this from another brainly user)(I did not write this)
solve the linear eqvations by matrix inversion method 2x -2y = 4 , 3x + 2y = 6
Answer:
The answer is below
Step-by-step explanation:
A linear graph has an equation of the form:
y = mx + b,
where y and x are variables, m is the slope (rate of change) of the graph and b is the y intercept (value of y when x is 0).
Given that:
2x -2y = 4 , 3x + 2y = 6
The matrix form of the equation is:
AX = B
[tex]A=\left[\begin{array}{cc}2&-2\\3&2\end{array}\right] ,X=\left[\begin{array}{c}x\\y\end{array}\right] ,B=\left[\begin{array}{c}4\\6\end{array}\right] \\\\Therefore:\\\\\left[\begin{array}{cc}2&-2\\3&2\end{array}\right] \left[\begin{array}{c}x\\y\end{array}\right] =\left[\begin{array}{c}4\\6\end{array}\right] \\\\\left[\begin{array}{c}x\\y\end{array}\right] =\left[\begin{array}{cc}2&-2\\3&2\end{array}\right]^{-1} \left[\begin{array}{c}4\\6\end{array}\right] \\\\[/tex]
[tex]\left[\begin{array}{c}x\\y\end{array}\right] =\left[\begin{array}{cc}0.2&0.2\\-0.3&0.2\end{array}\right] \left[\begin{array}{c}4\\6\end{array}\right] \\\\\left[\begin{array}{c}x\\y\end{array}\right] =\left[\begin{array}{c}2\\0\end{array}\right][/tex]
Which equation will not result in a negative answer?
a) Five plus its additive inverse
b) The difference of -4 and -2
c) (-8]
d) The product of a positive integer and a negative integer.
e) 7 - x>-10
D
Step-by-step explanation:
I just took the test and I got it write
For a walk-a-thon a sponsor committed to give you a flat fee of $5 plus $2 for every mile m you walk. Write an expression for the total amount you will collect from your sponsor at the end of the walk-a-thon.
Answer:
5 + 2m = y
Step-by-step explanation:
5 being the y-intercept or initial cost
m being miles
5 + 2m = y (where y is the total amount at the end)
