Mathematics High School
Answers
Answer 1
Question 1:
What is the value of x when y = 4?
x=0.8
Question 2:
What is the value of y when x = 3?
y = 13.5
Question 3:
Which equation represents a proportional relationship?
y=12x
Question 4:
What is the corresponding equation?
y=1.5x
Question 5:
What is the corresponding equation?
y=1/2x
Answer 2
The answers to each part is mentioned below.
What are algebraic expressions?In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.Mathematical symbols can designate numbers (constants), variables, operations, functions, brackets, punctuation, and grouping to help determine order of operations and other aspects of logical syntax.
Given are the questions as mentioned.
Direct variation of {y} with {x} means that as {x} increases, the value of {y} increases uniformly with it. Mathematically -
{K} = y/x = constant
Scale factor {K} is a dimensionless value that indicates the constant ratio value indicating direct variation.
{ 1 } -
The variables y and x have a proportional relationship.Also y = 15 when x = 3.We can write for proportional relationship as : 15/3 = 4/x
{x} = (4 x 3)/15 = 4/5
{x} = 4/5
{ 2 } -
The variables y and x have a proportional relationship.Also y = 9 when x = 2.We can write for proportional relationship as : 9/2 = y/3
{y} = (9 x 3)/2 = 27/2 = 13.5
{y} = 13.5
{ 3 } -
An equation representing a proportional relationship is of the form -
y = mx + c
So all the equations given represent proportional relationship.
Therefore, the answers to each part is mentioned above.
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Related Questions
Of the 2,374 pieces produced by a particular machine, 27 were defective. What
percent were defective? Round to the nearest hundredth of a percent.
Answers
Answer:
1.14%
Step by step explanation
Step one:
The total pieced produces is 2374
total defective is 27
to find the percentage of the defective pieces, we would need to divide the total pieces of the defective by the total number of pieces produced by the machine and multiply the result by 100
Step two
% defecive= (27/2374)*100
% defecive= 0.0113*100
% defecive= 1.137%
To the nearest hundredth of a percent 1.14%
Estimation helps you check your answer by seeing if the estimate is close to the result you got. ... Estimation is useful when finding actual products and solving real-world problems because if your actual answer is close or exactly what you had estimated your answer will most likely be correct.
Answers
Answer:
Estimation is useful when finding actual products and solving real-world problems because if your actual answer is close or exactly what you had estimated your answer will most likely be correct.
Answer:
nuggts
Step-by-step explanation:
WILL GIVE BRAINLIEST ANSWER !!! need asap Which is an equation in point-slope form for the line that passes through the points (-1,4) and (3,-4)?
Oy+4=2(x – 3)
Oy - 4= 2(x+3)
Oy+4= -2 (2-3)
Oy-3= -2(x+4)
Answers
Answer:
Oy-3= -2(x+4)
Step-by-step explanation:
A parallelogram has a base of 9 units and an area of 12 square units. What is the corresponding height for that base?
Answers
Answer:
12x9
Step-by-step explanation:
12x9 equals ____ square units
5.) 72(x - 10)=
6.) x( x-8)=
7.) -(-3y +9)=
8.) -(a + b - c)=
I
Help me?
Answers
Answer:
are you expanding it??.. if so...
Step-by-step explanation:
5. 7x-720
6. x^2 - 8x
7. 3(y-3)
8. -a-b+c
w-5.9=1.21 solve for w! HELPPPP MEE
Answers
My good friend, all you need to do is to add 5.9 on both side of the equation
w-5.9+(5.9) = 1.21 + (5.9
w = 7.11
I need help trying to find the answer to -4(x-1)=-3x+31
Answers
Answer:
x=27
Step-by-step explanation:
-4x+4=-3x+31
4=x+31
27=x
Answer:
x=-27
-4x+4=-3x+31
-x=27
x=-27
Anyone know this??????
Answers
Answer:
The answer would be 2.5
Can someone help with these two questions
Answers
Answer:
1. A
2. I cant see answer D
But if it's 36
IT'S CORRECT
whats the unit rate of $1.99 and 16 lb??
Answers
Answer:
2 to 1
Step-by-step explanation:
PLZZZZ HELP I´LL GIVE BRAINLIEST TO CORRECT ANSWER!!
Answers
Answer:
Clare failed to flip the inequality when dividing by a negative number
Step-by-step explanation:
-4x+3 < 23
Subtract 3 from each side
-4x+3-3 < 23-3
-4x < 20
Divide each side by -4, remembering to flip the inequality
-4x/-4 > 20/-4
x > -5
Clare failed to flip the inequality when dividing by a negative number
Help help help help help help
Answers
Answer:
d
Step-by-step explanation:
8P + 2 > 3P - 15
I need help plsss it has to be in terms of a mixed number
Answers
Answer:
p > -17/5
Step-by-step explanation:
is it right or wrong? if its wrong please let me know math is not my strong side if its wrong ill try to do it again for you
Write the equation y = 4x – 20 in Standard Form (AX + By = C) with integer coefficients
HELP ASAP PLEASE
Answers
Answer: 4x - y = 20
=============================================
Work Shown:
y = 4x - 20
4x - 20 = y ...... swap both sides
4x = y + 20 ..... adding 20 to both sides
4x - y = 20 .... subtracting y from both sides
The equation is now in standard form (Ax+By = C) where,
A = 4B = -1C = 20
6. Using the information from question 5, What would the be the total amount you spend on the
$39.00 pair of shoes including the sales tax.
Will give brainlest also don’t waste my points .
Answers
Answer:
$42
Step-by-step explanation:
if the total without tax is $39.00, add the sales tax.
39.00 + 2.83 = 41.83
rounded would be $42.00
T-shirts and More Print Shop will print any image on a mouse pad for a cost of $2 per mouse pad and a one-time charge of $12 to set up the mouse pad design. The total cost of an order was $562. How many mouse pads were printed?
Answers
Answer:
275 mouse pads were printed
Step-by-step explanation:
562 - 12 = 550
550/2 = 275
Israel planted 4 tomato seeds in his garden. Then he planted flower seeds in each of his three neighbor's gardens. Which expression represents the number of seeds Israel planted?
A. 4s + 3
B. 4 + 3s
C. 4 – 3s
D. 3s – 4
Answers
Answer:
B. 4+3s
Step-by-step explanation:
The expression that represents the number of seeds that has been planted by Israel is 4 + 3s. Hence, Option B is correct.
What is an expression?
A finite combination of symbols that are well-formed in accordance with context-dependent principles is referred to as an expression or mathematical expression in mathematics.
Mathematical symbols can represent variables, operations, functions, brackets, punctuation, and grouping to help specify the logical syntax and order of operations.
But in contemporary mathematics, and particularly in computer algebra, formulae are seen as expressions that can be evaluated as true or false, depending on the values given to the variables present in the expressions.
In the garden, Israel sowed 4 tomato seeds. Then Israel scattered flower seeds throughout the gardens of the three neighbors. Here neighbors will be denoted as x. For this the most suitable expression will be 4 + 3s.
Therefore, Option B is correct.
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Can someone explain to me how to solve this kind if problems?
Answers
Answer:
You would have to Multiply
Step-by-step explanation:
Translate the algebraic expression into an ALGEBRAIC PHRASE:
3(x+2)
This is for my math class
Im trying to understand how to say it so please give a short explanation.
Answers
Answer:
the product of 3, and a number increased by 2
Identify the independent and dependent variable for the given situation. P = (1.05)t
Answers
Answer:
P = dependant; t = independant
Step-by-step explanation:
The t value can be changed, making it the indepentant. The value of P changes as the value of t is changed, therefore making it dependant on t, making it the dependant value.
The points (-5,r) and (1,4) lie on a line with slope 3. Find the missing coordinate r.
Answers
Answer:
the missing coordinate of "r" equals -14. (-5,-14)
Solve for me pls
[tex]f(x) = x + \sqrt{x + 1 \frac{x} - {1} [/tex]
Answers
Answer:
A
Step-by-step explanation:
Given
f(x) = x + [tex]\frac{\sqrt{x+1} }{x-1}[/tex]
To evaluate f(3), substitute x = 3 into f(x) , that is
f(3) = 3 + [tex]\frac{\sqrt{3+1} }{3-1}[/tex]
= 3 + [tex]\frac{\sqrt{4} }{2}[/tex]
= 3 + [tex]\frac{2}{2}[/tex]
= 3 + 1
= 4 → A
for two complex numbers z and w, which diagram shows the geometric representation of zw
Answers
Answer:
The answer is the last one, D, pictured above on the question, I took the test and it showed it was the right one
Step-by-step explanation:
The geometric expression of two complex number is the magnitude r₁*r₂ and the phase is θ₁ + θ₂.
What is complex number?
The complex number is" the combination of real numbers and an imaginary number. The complex number is of the form a + i b".
According to the question,
z, w are the two complex numbers. The distance from its point in the complex plane to the origin (0,0) and the angle formed by the line segment from the origin to the point and the positive half of the x-axis.
The distance or 'magnitude' to the origin is denoted as 'r' and the angle or 'phase' formed denoted as 'θ'. The distance to the origin is called 'magnitude'.
The parameter 'r' and 'θ' related to 'a' along x-axis and 'b' along y-axis.
Euclidean distance formula applying Pythagorean theorem we have
r = [tex]\sqrt{a^2+b^2}[/tex].
The sine angle is defined to the ratio y-coordinate 'b' to length 'r' and the cosine angle is defined to the ratio x-coordinate 'a' to length 'r'.
sin θ = [tex]\frac{b}{r}[/tex] and cos θ = [tex]\frac{a}{r}[/tex].
b = r sin θ; a = r cosθ
When multiplying two complex numbers we by multiplying magnitude together and add two phase. when divide two complex number by dividing the magnitude correspondingly and subtracting the phase from the numerator and the denominator.
Then we have product complex number to the magnitude r₁ and phase θ₁
with a complex number to the magnitude r₂ and the phase θ₂ which gives the complex number with magnitude r₁ * r₂ and θ₁ + θ₂.
Hence, the geometric representation of z w is with magnitude r₁*r₂ and phase is θ₁ + θ₂.
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i have a photo can someone solve it
Answers
Answer:
I think the answer is B.6.4ft
Step-by-step explanation:
you are travelling on a bus to camp which is 200miles away at 50mph.the number of miles,N,that you have left to travel after t hours
Answers
Answer:
N= 200-50t
Step-by-step explanation:
Find the slope of each line
Answers
The slope is 2/1 I think
Question 6: CONSUMER MATH
Answers
Answer:
A. 18.99
Step-by-step explanation:
Times 75.95 by .25 and you get the amount taken off
Predict number of chocolate chips in 6 pancakes
Answers
Answer:
48
Step-by-step explanation:
there's a pattern
Does the following mapping diagram represent a function?
A. Yes
B. No.
C. Not enough information
Answers
Answer:
yes
Step-by-step explanation:
PLEASE HELP!!!Which statement is true? Select all that apply.
The relationship is proportional.
The slope is -6.
The slope is negative.
The y-intercept is -3.
The equation of the line is y = -3x
Answers
Answer:
"The relationship is proportional."
"The relationship is proportional."
"The equation of the line is y = -3x"
Step-by-step explanation:
First, a proportional relationship can be written as:
y = k*x
where k is called the constant of proportionality. (or the slope)
You can see that if we take x = 0, we have
y = k*0 = 0
Then this type of line always passes through the point (0, 0).
And in the graph you can see that this line does that, then:
"The relationship is proportional." is true.
We also can see that as x increases, the value of y decreases, this must imply that k is a negative number, then:
"The slope is negative." is true.
To find the value of the slope, we can take two points that belong to the line.
I will choose:
(0, 0) and (2, -6)
For the slope, we just take the quotient between:
Δy = -6 - 0 = -6 (the difference in the y-components)
Δx = 2 - 0 = 2 (the difference in the x-components)
the slope is:
k = Δy/Δx = -6/2 = -3
Then the slope is -3, and we can write the equation as:
y = -3*x
Then:
"The equation of the line is y = -3x" is true.