Determine whether the statement is true or false. If false, give a counterexample.
The constant of proportionality in an equation can never be 0.

Answers

Answer 1

Answer:

Step-by-step explanation:


Related Questions

a line has a slope of 7/10 and a y intercept of (0,-4) what is the equation of the line in standard form

Answers

Considering the definition of a line, the equation of the line in standard form is y - 7/10x= -4

What is Linear equation

A linear equation o line can be expressed in the form y = mx + b

where

x and y are coordinates of a point.m is the slope.b is the ordinate to the origin and represents the coordinate of the point where the line crosses the y axis.

The standard form of a linear equation is Ax + By = C. In this type of equation, x and y are variables and A, B, and C are integers.

Equation in this case

In this case, you know:

A line has a slope of 7/10.A line has a y-intercept of (0,-4).

So, the line can be expressed as:

y=7/10x -4

Expresed in standard form:

y - 7/10x= -4

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Anna wants to buy 4 sweaters. The sweater come at a discount rate. If you buy one sweater regular price the other sweater is 40% off. How much percent is off of each sweater?

Answers

Answer:

20%

------------------------

If you buy a sweater, the second one is at 40% discount.

Divide the discount between the two to get:

40%/2 = 20%

You get a discount of 20% for each sweater.

Answer:

Discount percentage = 20%

Step-by-step explanation:

Discount of the sweaters,

→ first sweater = 0%

→ other sweater = 40%

The average discount percent is,

→ (first sweater + other sweater)/2

→ (0% + 40%) ÷ 2

→ (0 + 40)/2

→ 40/2

→ 20% off

Hence, the answer is 20% off.

What is the area of the figure below? 7 cm 8 cm 3 cm 4 cm

Answers

The answer to your question is 5

help help help help pls​

Answers

Answer:

67

Step-by-step explanation:

42+90=132

180-132=48

<A=48

if u use the 113 that you got than

113+48=161

180-161=19

<B= 19

48+19=67

If a= m2 + 2, what is the value of a when m=-3?
0-7
-4
11
00

Answers

Answer:

a=11

Step-by-step explanation:

a=m2 +2

a= (-3)2+2

a=9+2

a=11

gretchen buys a sweater at a clearance sale for $35.74. The original price of the sweater was $59.99. Find the percent discount.

Answers

Answer:

59.5765%

Step-by-step explanation:

$35.74/$59.99

The function f is defined by f(x) = 2x2 -7.
Find f(5x).

Answers

Answer:

10fx-7

Step-by-step explanation:

(:

-15 POINTS-
How many sides does a regular polygon have if one interior angle measures 144°

Answers

Answer: 10 sides

Step-by-step explanation:

You can always use the given formula to calculate but I (personally) find it much easier to calculate the number of sides using the exterior angle.

To calculate the exterior angle, it is 180 - the interior angle.

In this example, the exterior angle would be 180-144 = 36°

Because it is a regular polygon, we know that all the angles in the shape are the same.

In all polygons, the exterior angles always add up to 360 degrees.

So divide 360 by 36 (the size of each exterior angle), and you get 10.

360/36 = 10

Prove that for any natural n: a the number 7^(n+4) −7^n is divisible by 30.

Answers

For, n = 0, 1 we proved that 7⁽ⁿ⁺⁴⁾ - 7ⁿ hence by induction it is divisible by 30 for all n ∈ N.

What is mathematical induction?

An inductive proof requires two cases. The first, or base case, establishes the proposition that n = 0 without requiring any prior knowledge of other situations. The second example, the induction step, demonstrates that if the assertion is true for any particular case where n = k, then it must also be true for the subsequent case when n = k + 1. These two actions prove that the statement is true for all n = 1 natural numbers. The base case establishes the truth of the statement for all natural numbers n N, but it does not always start with n = 0. Instead, it frequently starts with n = 1, and it may also start with any fixed natural number n = N.

Given, We have to prove 7⁽ⁿ⁺⁴⁾ - 7ⁿ is divisible by 30 for all n ∈ N.

Let, n = 0.

Therefore,

7⁴ - 7⁰.

= 2401 - 1.

= 2400.

= 30×80, Divisible by 30.

Similarly for n = 1 we have,

7⁵ - 7¹.

= 16807 - 7.

= 16800.

= 30×560.

Hence by induction, the cycle will continue.

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PLEASE BE FAST
Find the constant of proportionality for the proportional relationship shown in the graph.

graph of a line going through 0 comma 0 and one half comma 5

p = 10
p = 5
p = 0.5
p = 0.1

Answers

The constant of proportionality is 10 for the proportional relationship shown in the graph.

What is the constant of proportionality?

The constant of proportionality is the constant value of the ratio of two proportional values. A proportionality relation exists between two changing quantities when either their ratio or product gives a constant.

The proportional relationship is shown in the given graph.

As per the given graph, we take two points (1, 10) and (2, 20)

So, the constant of proportionality will be as:

⇒ (20 - 10)/(2-1)

⇒ 10/1

⇒ 10

Hence, the correct answer would be option (A).

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What are the more appropriate measures of center and spread for this data
set?

Answers

Except Option - A all satisfy the more appropriate measures of center and spread for the data that is median and IQR.

Given that,

We have to find what are the more appropriate measures of center and spread for data.

We know that,

Mean, median, and mode are the three central tendencies, and median is the more accurate indicator.

This is because

i) Extreme values affect the mean.

ii) If there are more outliers, the mean is in error.

iii) Means that are biassed to the right or left may not accurately reflect the nature of the data.

However, median is preferable to mean because it represents the center entry and is unaffected by extreme items or outliers.

Since extreme items will show higher standard deviation and some outliers may be misleading, IQR is a superior spread measurement tool. However, IQR provides an excellent idea.

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The square of a number minus six times a number equals negative five.

The equation is ?

The solutions to the equation is ?

Answers

Answer:

x² - 6x = -5

x = {1, 5}

Step-by-step explanation:

The square of a number minus six times a number equals negative five.

x² - 6x = -5

Add 5 to both sides

x² - 6x + 5 = 0

Factor

(x - 1)(x - 5) = 0

x = {1, 5}

Answer:

[tex]x^{2} - 6x = -5[/tex]

x = 1 or x = 5

Step-by-step explanation:

Let x = the no.

[tex]x^{2} - 6x = -5\\x^{2} - 6x + 5 = 0[/tex]

(x - 1)(x - 5) = 0

x = 1 or x = 5

Determine if the graph is a function.

Answers

Answer:

1. not a function

2. function

3. function

Step-by-step explanation:

ask yourself..."does it pass the vertical line test?"

Can y’all help me on question 20?!

Answers

Answer:

A. 84

Step-by-step explanation:

84 / 4 = 21

Answer:

Its a(84)

Step-by-step explanation:

1. The backdrop of the altar in a church is triangular in shape. It has a base of 10.5 meters
and a height of 8.5meters. The priest instructed the layman to cover it from the center with
a white rectangular cloth measuring 4.5 meters long and 4 meters wide. How big was the uncovered backdrop?
A. 26.63 m² B. 18 m²
C. 44.63 m² D. 89.25 m²
------------------------------------
2. A circular portion of a cardboard having 7.6 centimeters radius was being cut out from the entire
squarepiece of a cardboard having a side of 34 centimeters. How big was the remaining piece of
a cardboard?

A.181.37 m² B.974.63 m²
C. 1156 m² D. 219.6 m² ​

Answers

Answer:

#1

Area of triangle backdrop:

A = 1/2bh = 1/2(10.5)(8.5) = 44.63 m²

Area of the cloth:

A = 4.5*4 = 18 m²

Uncovered area:

44.63  - 18 = 26.63 m²

Choice A

#2

Area of the cut piece:

A = πr² = 3.14*7.6² = 181.37 cm²

Area of the square piece:

A= a² = 34² = 1156 cm²

Remaining piece is:

1156 - 181.37 = 974.63 cm²

Choice B

2 cm
A glass bead has the shape of a rectangular prism with a smaller rectangular
prism removed. What is the volume of the glass that forms the bead?
]
2 cm
4 cm
7 cm
4 cm
(The figure is not to scale.)
The volume of the glass that forms the bead is cm3.

Answers

Answer:

80

Step-by-step explanation:

Plz help me well mark brainliest if correct.......????.

Answers

Answer:

the answer is 6 feet!!

Answer:

A. 6 feet

Step-by-step explanation:

let sets a and b defined as follows
A is c,d,e,f,g
b is the set of odd numbers greater than 5 and less than 13

Answers

Answer:

The set A is defined as the set containing the elements c, d, e, f, and g.

The set B is defined as the set of odd numbers greater than 5 and less than 13. This set includes the elements 7, 9, and 11.

Step-by-step explanation:

17v = 62 (exponential equations with logarithms, solve)

Answers

Therefore v = log(62) / log(17) is the solution for v, the unknown variable in the equation.

Define log(Logarithm).

The logarithm is exponentiation's opposite function in mathematics. This indicates that the exponent to which b must be increased in order to obtain a number x is the logarithm of x to the base b.  For example, since 1000 = 10³, the logarithm base 10 of 1000 is 3, or log₁₀ = 3.

What is a function?

A function in mathematics is an expression, rule, or law that establishes the connection between an independent variable and a dependent variable (the dependent variable). Each element of X receives precisely one element of Y when a function from one set to the other is used. The sets X and Y are collectively referred to as the function's domain and codomain, respectively.

To solve this exponential equation, we can use the logarithms property that is log(a^b) = b*log(a).

Given the equation 17v = 62, we can take the logarithm base 17 of both sides:

log(17^v) = log(62)

v*log(17) = log(62)

Dividing both sides by log(17) gives us:

v = log(62) / log(17)

This is the solution for v, the unknown variable in the equation.

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pls help i’ll give brainliest

Answers

Answer:

94

Step-by-step explanation:

So

376= x + 3x

Where x is the hambugers and 3 x is cheeseburgers

so it is the same as

376= 4x

divide both sides by 4

x= 94

we can check by tripling x = 283 and adding the hamburgers we found to be 94 which gives us 376

help plz it due in an hour​

Answers

Answer:

4√3/3

Step-by-step explanation:

This is a 30,60,90 triangle. Therefore, small side (X) is equal to 4/√3 or X√3. In this case, it is 4/√3. This is equal to 4/√3 times √3/√3. This means the answer will be 4√3/3. Therefore, X=4√3/3

If this helps please mark as brainliest

Question #2
What is the value of the expression
35
?
23 – 1
A 5
B 7
C 12

Answers

Answer:

A. 5

Step-by-step explanation:

just use calculator tbh

The answer to your question is A

Here is the graph of a quadratic function f.

Select all equations that could define the function f.

Answers

Answer:

A B and D

Step-by-step explanation:

Given the parabola is opening downward, the function has to be negative. Therefore, A B and D are correct.

The following equations could define the given quadratic function.

1. -1(x-1)²+9

4. -x²+2x+8

6. (x+2)(x-4)

What is Parabola?

A parabola is a U-shaped curve this is drawn for a quadratic function,

f(x) = ax² + b x + c.

1. The function -1(x-1)²+9 represents a downward-facing parabola.

The vertex of the parabola is at point (1, 9), and it opens downward because the coefficient of the squared term (-1) is negative.

4. The function -x²+2x+8 represents a downward-facing parabola as well.

6. The parabola intersects the x-axis at x = -2 and x = 4.

Hence, the correct answer is options 1, 4, 6.

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paper costs $1.50, which inequality is used to find how many rolls of paper could be purchased with less than $12?

Answers

Answer:

1.50x < 12 (the inequality would just be "less than")

Step-by-step explanation:

what is the correct factorization of 100^12

Answers

Answer:

GCF of 12 and 100 by Prime Factorization

Prime factorization of 12 and 100 is (2 × 2 × 3) and (2 × 2 × 5 × 5) respectively. As visible, 12 and 100 have common prime factors. Hence, the GCF of 12 and 100 is 2 × 2 = 4.

GCF of 12 and 100 by Listing Common FactorsFactors of 12: 1, 2, 3, 4, 6, 12Factors of 100: 1, 2, 4, 5, 10, 20, 25, 50, 100

There are 3 common factors of 12 and 100, that are 1, 2, and 4. Therefore, the greatest common factor of 12 and 100 is 4.

< 8. If m M = (8x - 56) and mNP = (5x + 22), find mLP. M39 degrees​

Answers

Answer:

I think 42 is the answer...

Find the missing numbers 46 62 87 123 ---- 236

Answers

Answer:

The missing numbers are 74, 105, and 178.

what is equivalent to 2/8​

Answers

Answer:

1/4,

Step-by-step explanation:

Answer:

1/4

Step-by-step explanation:

please only right answers

Answers

Answer:

what is the full question? 4 units left or right or?

The square of a number minus six times a number equals negative five.

The equation is ?

The solutions to the equation is ?

Answers

Equation [tex]x^{2}-6x=-5[/tex]

Solving:

[tex]x^2 - 6x+5=0\\\\(x-5)(x-1)=0\\\\x=1, 5[/tex]

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