Length of segment 'cd' = 12 units
Given:-
'ol' is the mid-point of line segment 'cd'
'cl' = 13x + 8
'ld' = 23x - 4
We have to find the length of segment 'cd'.
Since the point 'ol' is the median to the segment cd then two expressions given 'cl' and 'ld' must add up to 'cd'.
'cd' = 'cl' + 'ld'
'cd' = (3x - 6) + (7x - 22)
'cd' = 10x - 28
- To determine the value of x we can also say that 'cl' and 'ld' must be equal because 'ol' is the common mid-point on the line segment 'cd'. So we can write:
'cl' = 'ld'
3x - 6 = 7x - 22
22 - 6 = 7x - 3x
16 = 4x
x = 4 units
- Now substitute the value of x in the expression developed for 'cd' as follows:
'cd' = 10x - 28
'cd' = 10 × 4 - 28
cd = 40 -28
'cd' = 12 units.
Therefore, the length of segment 'cd' is 12 units.
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Aisha organized her books for 1/6 and her coin collection for 3/7.
What's the best estimate for the total Aisha spent organizing?
(Brainliest Question)
The best estimate for the total Aisha spent organizing is; 1/2 hour
How to estimate fractions?We are told that Aisha organized her books for 1/6 and her coin collection for 3/7.
Now, normally when we want to find the total, we just add both fractions in this manner;
1/6 + 3/7 = 25/42
Now, since we want to find the best estimate, we will just approximate each fraction individually to get;
1/6 hour is closer to 0 hours than 1/2 hour. Thus;
1/6 hr ≈ 0 hour
3/7 hour is closer to 1/2 hour than 0 hours. Thus;
3/7 hr ≈ 1/2 hour
Thus;
Best estimate for total spent = 0 + 1/2 = 1/2 hour
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A young elephant weighs 135kg his weight increases by 20% how much does he weigh nw?
Answer:
162 kg
Step-by-step explanation:
135 + .2(135) = is the elephant's weight now
135 + 27 = 162 kg
Answer:
20% of 135 is 27 so you just add that to the original weight and you would get 162kg!
Step-by-step explanation:
Hope it helps! =D
whats the value of n
n/80 3/30
5. A bird is at 20 feet above sea level. A fish is 14 feet below sea level. What is the difference? on the number line
Answer:
I think its 34 feet
Step-by-step explanation:
If you subtract 20 to get to 0 its 20, minus another 14 to get to zero is 14. Add them and you get 34 feet. Hope it helps! =)
The difference in their positions on the number line is 34 feet
How to determine the difference on the number linefrom the question, we have the following parameters that can be used in our computation:
Bird = 20 feet above sea level
Fish = 14 feet below sea level
using the above as a guide, we have the following:
Bird = 20 feet
Fish = -14 feet
So, we have
Difference = 20 feet - -14 feet
Evaluate
Difference = 34 feet
Hence, the difference on the number line is 34 feet
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The terms grid, linear, quadrant, zone, and spiral are typically used to describe datum points. True or false?.
It is untrue to claim that words like grid, linear, quadrant, zone, and spiral are frequently used to refer to datum points.
A location that acts as a base or reference for the measurement of other quantities is known as a datum point. It can be located at any reference point where known or guessed coordinates can be used to make calculations or measurements.
Datum references, which the maker can choose, are used when marking out an object as a reference point from which all measurements are obtained. Accuracy can be increased and maintained by measuring from a limited selection of fixed points.
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2. What is the value of the expression when a = 6 and b = -4? Show your work to support your answer.
The value of the expression when a = 6 and b = -4 is -1
How to determine what is the value of the expression when a = 6 and b = -4?The expression is given as
2a/3b
The values are given as
a = 6 and b = -4
Substitute a = 6 and b = -4 in the expression 2a/3b
2a/3b = 2 * 6/3 * --4
Evaluate the products
2a/3b = 12/-12
Evaluate the quotient
2a/3b = -1
Hence, the value of the expression when a = 6 and b = -4 is -1
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Complete question
What is the value of the expression when a = 6 and b = -4? 2a/3b
Error Analysis Jacy was asked to write the
following statement as a conditional.
Water freezes if it is below 0°C.
What error did she make? What is the correct
conditional?
If water freezes, then it
is below O'C.
The error Jacy made was that the hypothesis or if part and the conclusion part was not appropriate . The correct conditional statement is "If water is below 0°C then water freezes."
Conditional statement is a statement which contain both hypothesis and conclusion . Thus there are two parts in conditional statement, first is the hypothesis part or the if part then the second part is the conclusion part or then part.
According to the question the conditional statement is
" Water freezes if it is below 0°C."
Which is not correct as the error is that the first part should be hypothesis part or if part and the second part should be the conclusion of the hypothesis.
Hence the correct conditional statement is :
"If water is below 0°C then water freezes."
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What is the logarithmic form of each equation?
a. 36=6²
The logarithmic form is 2log₁₀6
Logarithm is a mathematical tool used to make high value calculations simple.
It is the exponent to the power of which a number must be raised to give a certain result.
Some of the important formulas in logarithm are:
loga where a is considered as base of the logarithm and b is the argument
is given as nlogab
when base and the argument is same , log is given as 1
logabc where a is the base is given as logab+logc
loga b/c where a is the base is given as logab-logac
Now it is given to us to find the logarithmic form of 36=6^2
Let us consider the base of the logarithm to be 10
thus log₁₀36=log₁₀[tex]6^{2}[/tex]
log₁₀36=2 log 6
Hence the expression becomes 2log6
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Part A: State the vertical angles theorem.
Part B: Identify the pairs of vertical angles in the figure.
Part C: Determine the measures of triangle a triangle b and triangle c in this figure. Show your work.
Answer:
A) Vertical angles are congruent
B) 40 and b are vertical angles and c and a are vertical angles.
C) <a = 40
<b = 140
<c = 140
Step-by-step explanation:
A straight angle is a straight line. It is 180°
Solve each inequality using a table.
(Hint: For more accurate results, set ΔTbl=0.001. )
3(2) x⁺¹>5
After solving the given inequality the answer is x∈(5/6, ∞).
What exactly do we mean when we talk about inequality?In mathematics, an inequality is a relationship that results from a non-equal comparison of two numbers or other mathematical expressions.It is most commonly used on a number line to compare the sizes of two numbers.So,
Given: 3(2) x¹>5
Then,
3(2) x¹>5 6x>5x∈(5/6, ∞)Therefore, after solving the given inequality the answer is x∈(5/6, ∞).
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Simplify each number.
64²/₃
The simplified form of given number is 16
We are given the number 64 with exponent ²/₃
Now, as per the known fact, cube of 4 is equal to 64. As, 4 multiplied with 4 gives 16. Further multiplying 16 and 4 gives 64. So, rewriting the number using 4 as follows -
Number = [tex]4^{3(2/3) }[/tex]
Cancelling 3 from exponent as it is present in both numerator and denominator. Rewriting the number with remaining exponent to find the simplified form of the number-
Number = 4²
Taking square of the number to find the simplified form of the number given in question
Number = 16
Hence, the simplified form of the number is 16
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b. An 80 -kg diver stands on a 6 -m diving platform. At what height should a 40 - kg diver stand to have equal potential energy? Do you need to find the potential energy of either diver to solve this? Explain.
The 40kg driver should be able to sit on the 12m driving platform to have equal potential energy.
What is potential energy?Potential energy is the energy held by an object as a result of its position relative to other objects, internal stresses, electric charge, or other factors.The gravitational potential energy of an object, which depends on its mass and distance from the center of mass of another object, the elastic potential energy of an extended spring, and the electric potential energy of an electric charge in an electric field are all examples of common types of potential energy. The joule, denoted by the symbol J, is the unit of energy in the International System of Units (SI).The formula of the potential energy of each driver:
Driver 1: PE = gmh = 9.8 · 80 · 6Driver 2: PE = gmh = 9.8 · 40 · hReplace the value of PE for driver 1 with the driver 2 formula.
9.8 · 80 · 6 = 9.8 · 40 · hNow, solve for (h) height:
9.8 · 80 · 6/9.8 · 40 ⇒ h - 12Therefore, the 40kg driver should be able to sit on the 12m driving platform to have equal potential energy.
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On a recent trip, the Baxter family drove 143 miles and used 4 2/3
gallons of gas. How many miles per gallon of gas did they travel?
They travel at 30.64 miles per gallon of gas when they drove 143 miles and used 4 2/3 gallons of gas.
This is solved by unitary method.
Distance travelled by (4 and 2/3) or 14/3 gallons of gas = 143 miles.
So, we get that for 1 gallon of gas it will be given as:
Distance travelled by 1 gallon of gas = 143 miles × 3/14
= 30.64 miles
So, they travel at 30.64 miles per gallon of gas when they drove 143 miles and used 4 2/3 gallons of gas.
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1. What is greenhouse effect?
The heat of the sun penetrates the atmosphere and warms the Earth's surface. The warmed rEarth Radiates and this heat back into the atmosphere.The gases the surround the atmosphere such as carbon dioxide , methane , nitrous oxide and water vapour absorb some of the radiated heat and send it back to the Earth . This trapping of heat from the Sun by excess carbon dioxide and other gases present in the atmosphere is known as the greenhouse effect. The gases involved in the phenomenon are called greenhouse gases.
Hope it helps ~(•‿•)#11 What is the absolute
value of -19?
Simplify each expression.
125¹/₃
The questions tests on indices. Write 125 in form of its prime factors. Apply the power rule (a^m)^(1/n)=a^(m/n). In prime factor form 125 = 5×5×5
125 = 5^3
(125^3)^(1/3) = 5^(3×1/3) = 5
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pls help w this pretty urgent
Answer:
[tex]\textsf{a)} \quad g'(x)=2x-4[/tex]
[tex]\textsf{b)} \quad y=2x[/tex]
[tex]\textsf{c)} \quad x=5[/tex]
Step-by-step explanation:
Given function:
[tex]g(x) = x^2-4x+9[/tex]
Part (a)Differentiate the given function with respect to x:
[tex]\begin{aligned}g(x) & = x^2-4x+9\\\implies g'(x) & = 2 \cdot x^{2-1}-1 \cdot 4x^{1-1}+0\\& = 2x^{1}-4x^{0}\\& = 2x-4(1)\\& = 2x-4 \end{aligned}[/tex]
Part (b)The y-value of the function at x = 3:
[tex]\begin{aligned}\implies g(3) & = (3)^2-4(3)+9\\& = 9-12+9\\& = -3+9\\& = 6\end{aligned}[/tex]
Therefore: (3, 6).
To find the slope of the function at x = 3, substitute x = 3 into the differentiated function:
[tex]\begin{aligned}\implies g'(x) & = 2(3)-4\\& = 6-4\\& = 2\end{aligned}[/tex]
Therefore, the slope of the function at x = 3 is 2.
Substitute the found slope and point (3, 6) into the point-slope form of linear equation to find the equation of the tangent line of g(x) at x = 3:
[tex]\begin{aligned} y-y_1 & =m(x-x_1)\\\implies y-6 & = 2(x-3)\\y-6 & = 2-6\\y & = 2x-6+6\\y&=2x\end{aligned}[/tex]
Part (c)To find the value of x for which the slope of the graph is equal to 6, set the differentiated function to 6 and solve for x:
[tex]\begin{aligned}g'(x) & = 6\\\implies 2x-4 & = 6\\2x & = 6+4\\2x & = 10\\x & = \dfrac{10}{2}\\x & = 5\end{aligned}[/tex]
How can you rewrite each function as a piecewise-defined function?
f(x) = -5x - 10|
Value of the given function as a piecewise-defined function is equal to
f(x) = -5x -10 , x ≤ -2
5x +10 , x > -2
As given in the question,
Function as a piecewise-defined function
y = |x| = x , x≥0
-x , x<0
Given function: f(x) = |-5x-10|
-5x -10≥0 ⇒ -5x ≥ 10 ⇒x ≤ -2
-5x -10 <0 ⇒ -5x < 10 ⇒ x> -2
Therefore, value of the given function as a piecewise-defined function is equal to
f(x) = -5x -10 , x ≤ -2
5x +10 , x > -2
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In art class, Mr. Jacobs compared the amount of glitter left on students' plates. The following dot plot shows this data. Each dot represents 1 student. If he wants to combine the two least full plates of glitter, what fraction of a plate would they take up?
When he wants to combine the two least full plates of glitter, the fraction of a plate that they would they take up is 1/4.
How to illustrate the information?It should be noted that from the information, in the art class, Mr. Jacobs compared the amount of glitter left on students' plates and the dot plot shows this data
It should be noted that the least two plates of glitters will be:
= 1/4 + 2/4
= 3/4
Therefore, when e wants to combine the two least full plates of glitter, the fraction of a plate that they would they take up will be:
= 3/4 ÷ 3
= 3/4 × 1/3
= 1/3
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HELPPPP DUE IN 1 HOUR
Answer:14.12
Step-by-step explanation:
At a constant of 80 kilometres per hour, it would take 35 years to travel over the entire road network of the world. Taking a year as 365 days, calculate the length of the road network of the world, giving your answer in standard form.
Answer:
115
Step-by-step explanation:
What is the order of the symmetry of the pizza shown below?
6
07
04
08
Answer:
6
Step-by-step explanation:
pizza has rotational symmetry of 60 degrees. Thus, the order of symmetry will be 6.
Let f(x)=4 x, g(x)=1/2 x+7 , and h(x)=-2 x+4 . Perform each function operation. f(x) . g(x)
The value of f(x) . g(x) is [tex]2x^2+28x[/tex] by using multiplication of functions.
By considering the given functions
f(x)=4 x
g(x)=1/2 x+7
f(x) . g(x)
=4 x (1/2 x+7 )
[tex]=2x^2+28x[/tex]
A y-intercept, a horizontal asymptote, a domain (the range of x values at which the function exists), and a constant growth factor, b, are the four main characteristics of exponential functions.
A mathematical expression, rule, or law that establishes the relationship between an independent variable and a dependent variable (the dependent variable). In mathematics, functions are everywhere, and they are crucial for constructing physical relationships in the sciences.
Four broad categories can be used to classify different types of functions. One to one function, many to one function, onto function, one to one and into function—all based on the element.
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Model Real Life Some firefighters are
testing their equipment. Water from
their firetruck hose hits the wall 12 feet
higher than 7 times where the spray
from a fire extinguisher hits the wall.
How many feet high does the water
from the hose hit the wall?
The height in feet that the water from the hose hits the wall is; 7x + 12 ft
How to solve Algebra Word Problems?Let the height where the spray from a fire extinguisher hits the wall be denoted as x.
Now, we are told that Water from their firetruck hose hits the wall 12 feet
higher than 7 times where the spray from a fire extinguisher hits the wall.
Thus, the algebraic equation that expresses this statement is;
7x + 12
Thus, the height in feet that the water from the hose hits the wall is; 7x + 12 ft
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Owen’s parents were planning a big birthday party for him.
(a). His parents bought 8 goodie bags. Each bag costs $3.49. How much did they spend on goodie bags?
(b). They spent $150 to rent a bounce house for 4 hours. How much is the hourly rate for the rental?
(c). How much total money did Owen’s parents spend buying the goodie bags and renting the bounce house?
answer: they spend $27.92 on goodie bags
the hourly rate is $37.5
they spend $177.92 in total
You are filling traffic cones with sand to keep them from blowing over. the cone has a radius of 7 inches and a height of 28 inches. approximately how much sand, in cubic inches, can fit inside the cone?
If you are filling traffic cones with sand to keep them from blowing over and the cone has a radius of 7 inches and a height of 28 inches, then 1436 cubic inches of sand can fit inside the cone.
The volume of the cone can be described as the measure of a 3-D space occupied by matter.
The volume of sand in cubic inches that can fit inside the traffic cone can be calculated by the formula,
v = πr²h / 3
As the radius of the cone = 7 inches
Height of the cone = 28 inches
v = π(7)²28 / 3
v = (π)(49)(28) / 3
v = (π)(1372) / 3
As π = 3.14
v = (3.14)(1372) / 3
v = 4308.08 / 3
v = 1436.02 ≈ 1436 cubic inches
Hence, 1436 cubic inches of sand is calculated to fit inside the cone.
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M bisects PQ. PM=9x + 3 and MQ= 11x -17, find x.
Applying the definition of a midpoint, the value of x is calculated as: x = 10.
What is the Midpoint of a Segment?The midpoint of a segment, for example, point M, is a point that bisects a segment into two equal parts with the same measurement.
Thus, this means that:
PM = MQ
PM = 9x + 3
MQ = 11x - 17
Substitute
9x + 3 = 11x - 17
Combine like terms
9x + 3 - 11x = 11x - 17 - 11x
-2x + 3 = -17
-2x + 3 - 3 = -17 - 3
-2x = -20
-2x/-2 = -20/-2
x = 10
Thus, applying the definition of a midpoint, the value of x is calculated as: x = 10.
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Determine whether each conjecture is true or false. Give a counterexample for any false conjecture.
1. If AB, BC, and AC are congruent, then A, B, and C and colllinear.
2. If <1 is complementary to <2, and <1 is complementary to <3, then <2 ≅ <3.
The given conjecture "If AB, BC, and AC are congruent, then A, B, and C and colllinear" is false.
How to Interpret Conditional Statements?Notice that the given conjecture does not necessarily be always true.
To be precise; there are no reasons as to why A, B and C must be noncollinear.
1. we are given If AB, BC, and AC are congruent, then A, B, and C and colllinear.
A,B ,C are not collinear so it will be false
Therefore, the given conjecture "If AB, BC, and AC are congruent, then A, B, and C and colllinear" is false.
A Counter- example of the given statement is that A, B, C are three points that lie on the same line and so they are collinear.
2. We are given If <1 is complementary to <2, and <1 is complementary to <3, then <2 ≅ <3.
It may be true.
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HAND-WRITTEN ANSWER ONLY
The state of Tennessee is shaped like a parallelogram. Its approximate
dimensions are a base of 440 miles and a height of 120 miles. Draw
Tennessee, label the dimensions and find the approximate area.
The area of a parallelogram when the dimensions are a base of 440 miles and a height of 120 miles is 52800 miles²
How to calculate the value?It should be noted that the area of a parallelogram is calculated by multiplying the base by the height.
The dimensions are a base of 440 miles and a height of 120 miles.
The area of the parallelogram will be:
= Base × Height
= 440 × 120
= 52800 miles²
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Find each real root. √25
The correct answer to the given question is 5 .
If a mathematical equation has real roots, then its solutions or roots are real numbers. If an equation has distinct roots, we contend that all of its solutions or roots are not equal. A quadratic equation has real and distinct roots if its discriminant is bigger than.
In the case where the discriminant is positive or zero, a quadratic equation has real roots (not negative). This indicates that, in terms of algebra, b² >= 4ac. This indicates visually that the quadratic's parabola-shaped graph crosses the x axis at least once.
We have been given to evaluate √25 .
√25 = √(5 × 5)
= √5²
= 5
Therefore, the value of the given question is 5.
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