we get 6 = 6 , in 42= 6x7 using commutative law of multiplication.
What do associative law and commutative law mean?
The order of some mathematical operations is addressed by the commutative property. We can write the binary operation as a + b = b + a. The associative attribute, on the other hand, deals with the grouping of numbers in an operation. For instance, we could write it as (a + b) + (a + b + c).This law states that no matter how the numbers are arranged, the outcome of multiplying two integers remains the same. So A.B = B.A. Examples include: 1 + 2 + 1 + 2 + 4 + 5 + 4 + 20.using the Commutative Law of Multiplication.
42 = 6 x 7
42 / 7 = 6
6 = 6
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A number line going from 0 to 1. There are 5 equal spaces between 0 and 1. What is the distance between each tick mark on this number line? One-sixth One-fifth 5 6
The distance between each tick mark on this number line= 1/5 units
What is unit rate?
A unit rate is the cost for only one of anything. This is expressed as a ratio with a denominator of 1. For instance, if you covered 70 yards in 10 seconds, you did so at an average speed of 7 yards per second. Although both of the ratios—70 yards in 10 seconds and 7 yards in one second—are rates, only the latter is a unit rate.
5 equal spaces between 0 and 1 shows,
5 equal spaces= 1 unit
1 equal space = x units
Do the cross multiplication.
5*x=1*1
5x=1
x=1/5
So, the distance between each tick mark on this number line= 1/5 units
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Answer:
1/5 is the answer
Josie is 11 years older than Macy. What is an equation
that relates the age of Josie J and the age of Macy M?
Answer:
J+11=M
Step-by-step explanation:
What ever age MAcy is Josie is 11 years older than Macy I think the equation is correct sometimes I struggle with those.
Question 1(Multipl no e Choice Worth 2 points)
(04.04 LC) b
Soybean type 1 yielded 125 bushels per acre last year at a research farm. This year, soybean type 2, planted in the same location, yielded only 100 bushels per acre and there was a
drought. The researchers do not know whether the difference is a result of the superiority of type 1 soybeans or the drought. What is this an example of?
O Bias
O Matched-pairs design
O The placebo effect
O Confounding variable
O Replication
Answer: Confounding Variable
Step-by-step explanation:
Answer: Confounding variables
Step-by-step explanation:
Took exam and got it correct
Using the image below, state what additional information is required to prove the triangles are congruent with ASA Postulate.
The additional information is required to prove the triangles are congruent with ASA Postulate is \(\bar{RS} \cong \bar{CS}\) (option d)
In order to prove that two triangles are congruent using the ASA postulate, we need to know that they have two pairs of congruent angles and a congruent side that is in between those angles. The image below shows two triangles, but we do not have enough information to prove that they are congruent with the ASA postulate.
To use the ASA postulate, we need to have a congruent side in between the two congruent angles. In this case, we do not know if side RS is congruent to side CS. Therefore, we cannot use the ASA postulate to prove that these triangles are congruent.
In summary, to prove that two triangles are congruent using the ASA postulate, we need to have two pairs of congruent angles and a congruent side in between those angles. Without this information, we cannot use the ASA postulate to prove congruency.
Hence the correct option is (d)
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The sales tax for an item was $18.40 and it cost $460 before tax.
Find the sales tax rate. Write your answer as a percentage.
Answer:
4%
Step-by-step explanation:
item cost x sales tax rate = sales tax
460 x sales tax rate = 18.40
sales tax rate = 18.40/460
sales tax rate = .04 or 4%
A shop makes a profit of £2 750 in March
It has an Easter sale and the profit for April is £3 162.50
Work out the profit percentage increase
The percent increase of the profit is 15%
How to determine the percent increase of the profit?In this question, the figures are given as
Profit in March = £2750
Profit in April = £3162.50
The percentage of the increase of the profit is then calculated using the following equation
Increase percentage = (Profit in April - Profit in March)/Profit in March * 100%
Substitute the known values in the above equation, so, we have the following representation
Increase percentage = (3162.50 - 2750)/2750 * 100%
Evaluate
Increase percentage = 15%
Hence, the increase in percentage is 15%
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solve by factoring
k2 +6k =16
Answer:
k=2 k=-8
Step-by-step explanation:
Help I’ll give extra points and brainlist
NO LINKS OR ELSE I WILL REPORT
At the neighborhood grocery, 3 pounds of steak cost $35.58. How much would it cost
to buy 4 pounds of steak?
Answer:
47.44
Step-by-step explanation:
Divide 35.58/3=11.86
Then multiply by 4
11.86x4=47.44
1. ) if 3 pounds cost $35.58, we would divide that by 3 to get the cost of one pound. So, 35.53/3= 11.84.
2.) knowing that one pound costs $11.84, we multiply the cost of one pound by four. so, $11.84 x 4= $47.36
Answer: $47.36 for 4 pounds.
What is functio
TIG
3. Given this graph of the function f(x):
Given the functi
f(x)
Find:
b. f(0) =
c. f(3) =
d. f(-5) =
a. f(-4)=
f. x when f(x) = 0
e. r when f(x) = -2
Answer:
I know I'm not answering your question but math-way helps and its fast i just want to save you time <3
Step-by-step explanation:
have a nice day
How do I show the work for the question 140/1.5
The expression is solved to give 93 1/3
What are fractions?Fractions are defined as the part of a whole element, a whole number or a whole variable.
In mathematics, there are different types of fractions.
The types of fractions are listed as;
Simple fractionsProper fractionsImproper fractionsComplex fractionsMixed fractionsFrom the information given, we have that the fraction is;
140/1.5
Convert 1.5 to fraction, we have;
1.5 = 3/2
Substitute the value, we have;
140/3/2
Then, we get;
140(2)/3
Multiply the values, we get;
93 1/3
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A race car traveled for 2 1/2hours with an average speed of 132 5/8 km per hour. Find the total distance it covered.
Answer: The total distance covered by the car is 331 9/16 km.
Step-by-step explanation:
We know that, speed= distance/time taken
Therefore, distance = speed x time taken
= 132 5/8 x 2 1/2
= 5/2 x 1061/8
= 5305/16
= 331 9/16 km
Therefore, total distance is 331 9/16 km.
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(d) You will live for 500 years.state whether the following event is certain, impossible, even,likely or unlikely
Answer:
Impossible
Step-by-step explanation:
please help, ill give brainliest
Answer:
hope this help you......
Help pls............!!!!!
Answer:
The 3rd set
Step-by-step explanation:
The first set has a range of 6, not 5
The second set has a range of 5, but not a mean of 5
The third set has both a mean and a range of 5
Solve -2(5x – 3) = 41.
Answer:
Divide both sides by the numeric factor on the left side, then solve.
Exact Form:
x=−7/2
Decimal Form:
x=−3.5
Mixed Number Form:
x=−3 1/2
Step-by-step explanation:
Answer:
- 3.5
Step-by-step explanation:
hope this helps :)
please help!! :)
find the area of this parallelogram. Be sure to include the correct unit in your answer.
Answer:
7x12x13=1092
Step-by-step explanation:
The school band has d drummers and 5violinists. There are 2 more violinists thandrummers. Which of the followingequations represents the situation?
If X represents the drummers and Y represents the violinists.
You have Y= 5 violinists and X= d drummers.
You know that there are two more violinists that drumers, you can symbolize it as X= Y-2 = 5-2= 3
There are d= 5-2=3 drummers.
which comprison is correct?
a. 3/2 < 1/3
b. 3/8 > 1/6
c. 11/6 < 3/4
d. 3/5 = 5/8
Answer:
The second one
Step-by-step explanation:
USE THE BUTTERFLY TECHINQUE
3/8 O 1/6
18 3/8 O 1/6 8
18 > 8
3/8 > 1/6
Answer:
B is correct
3/8> 1/6 = 3 · 3/8 · 3 > 1 · 4/6 · 4 = 9/24 > 4/24 = 9 > 4 = Yes
Solve for x
X-8 = -10
A) X = 2
B) X = -2
C) X = 18
D) X = -18
Answer:
x=–2
Step-by-step explanation:
x-8=-10
x=-10-8
x=–2
Answer:
-8= -10
, = -10+8
, = -2
PLEASEEEEEEEEEEEE HELPPPPPPPPPP :(
will give brainliest
32,300 is 85% of what
Answer:
27455
Step-by-step explanation:
32300per of 85
is 27455
In the box below, describe the graph. 3x+4y
The graph of the equation 3x + 4y = 0 is a straight line with a negative slope passing through the origin.
The given equation, 3x + 4y = 0, represents a linear graph in the Cartesian coordinate system. Let's analyze its characteristics.
First, note that the equation is in the standard form for a linear equation, which is Ax + By = C, where A, B, and C are constants. In this case, A = 3, B = 4, and C = 0.
To graph this equation, we can rewrite it in slope-intercept form, y = mx + b, where m is the slope and b is the y-intercept. By isolating y, we have y = (-3/4)x + 0. Since the y-intercept (b) is 0, the line intersects the y-axis at the origin (0,0).
Next, we can examine the slope. The coefficient of x, -3/4, represents the ratio of the change in y (vertical) to the change in x (horizontal) as we move along the line. In this case, the slope is negative, indicating that the line descends from left to right. The magnitude of the slope, 3/4, implies that for every 4 units moved horizontally to the right, the line goes 3 units down vertically.
Therefore, we can conclude that the graph of the equation 3x + 4y = 0 is a straight line passing through the origin (0,0) with a negative slope. It extends indefinitely in both directions, with the line getting steeper as we move to the right.
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What is the correct numerical expression for "12 times the sum of 5 and 25 minus 2?"
(12 x 5) + 25 − 2
12 x (5 + 25) − 2
12 x (5 + 25 − 2)
12 x 5 + (25 − 2)
The correct numerical expression for "12 times the sum of 5 and 25 minus 2" by simplification is option (b) , i.e 12 x (5 + 25) − 2.
What is simplification in mathematics?Simplification means simplifying an expression by reducing it to a simpler form. Approximating means simplifying the formula to the nearest value, which is not exactly correct.
What is BODMAS?BODMAS stands for Bracket, Off, Division, Multiplication, Addition, and Subtraction. BODMAS is used to describe the order of operations in formulas. In some areas, BODMAS is also known as PEDMAS. This represents parentheses, exponents, division, multiplication, addition, and subtraction.
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Answer:
12 x (5 + 25) − 2
Step-by-step explanation:
hope this helps!
hi can you help me with an algebra assignment pleasy=-7x,y=4x+22 solve the system by substitution.
Given:
\(\begin{gathered} y=-7x \\ y=4x+22 \end{gathered}\)Put y=-7x in second equation,
\(\begin{gathered} y=4x+22 \\ -7x=4x+22 \\ -7x-4x=22 \\ -11x=22 \\ x=-\frac{22}{11} \\ x=-2 \end{gathered}\)Put the value of x in first equation,
\(y=-7x=-7(-2)=14\)Answer: x = -2, y = 14.
Assume that females have pulse rates that are normally distributed with a mean of μ=73.0 beats per minute and a standard deviation of σ=12.5 beats per minute. Complete parts (a) through (c) below.a. If 1 adult female is randomly selected, find the probability that her pulse rate is less than 76 beats per minute.b. If 25 adult females are randomly selected, find the probability that they have pulse rates with a mean less than 76 beats per minute.c. Why can the normal distribution be used in part (b), even though the sample size does not exceed 30?A. Since the mean pulse rate exceeds 30, the distribution of sample means is a normal distribution for any sample size.B. Since the distribution is of individuals, not sample means, the distribution is a normal distribution for any sample size.C. Since the distribution is of sample means, not individuals, the distribution is a normal distribution for any sample size.D. Since the original population has a normal distribution, the distribution of sample means is a normal distribution for any sample size.
Answer:
a. the probability that her pulse rate is less than 76 beats per minute is 0.5948
b. If 25 adult females are randomly selected, the probability that they have pulse rates with a mean less than 76 beats per minute is 0.8849
c. D. Since the original population has a normal distribution, the distribution of sample means is a normal distribution for any sample size.
Step-by-step explanation:
Given that:
Mean μ =73.0
Standard deviation σ =12.5
a. If 1 adult female is randomly selected, find the probability that her pulse rate is less than 76 beats per minute.
Let X represent the random variable that is normally distributed with a mean of 73.0 beats per minute and a standard deviation of 12.5 beats per minute.
Then : X \(\sim\) N ( μ = 73.0 , σ = 12.5)
The probability that her pulse rate is less than 76 beats per minute can be computed as:
\(P(X < 76) = P(\dfrac{X-\mu}{\sigma}< \dfrac{X-\mu}{\sigma})\)
\(P(X < 76) = P(\dfrac{76-\mu}{\sigma}< \dfrac{76-73}{12.5})\)
\(P(X < 76) = P(Z< \dfrac{3}{12.5})\)
\(P(X < 76) = P(Z< 0.24)\)
From the standard normal distribution tables,
\(P(X < 76) = 0.5948\)
Therefore , the probability that her pulse rate is less than 76 beats per minute is 0.5948
b. If 25 adult females are randomly selected, find the probability that they have pulse rates with a mean less than 76 beats per minute.
now; we have a sample size n = 25
The probability can now be calculated as follows:
\(P(\overline X < 76) = P(\dfrac{\overline X-\mu}{\dfrac{\sigma}{\sqrt{n}}}< \dfrac{ \overline X-\mu}{\dfrac{\sigma}{\sqrt{n}}})\)
\(P( \overline X < 76) = P(\dfrac{76-\mu}{\dfrac{\sigma}{\sqrt{n}}}< \dfrac{76-73}{\dfrac{12.5}{\sqrt{25}}})\)
\(P( \overline X < 76) = P(Z< \dfrac{3}{\dfrac{12.5}{5}})\)
\(P( \overline X < 76) = P(Z< 1.2)\)
From the standard normal distribution tables,
\(P(\overline X < 76) = 0.8849\)
c. Why can the normal distribution be used in part (b), even though the sample size does not exceed 30?
In order to determine the probability in part (b); the normal distribution is perfect to be used here even when the sample size does not exceed 30.
Therefore option D is correct.
Since the original population has a normal distribution, the distribution of sample means is a normal distribution for any sample size.
What is 420 in exponential form
Answer:
420 = 4.2 x 100 = 4.2 × 102
Step-by-step explanation:
Every six customer at a flower shop receive the three roles and every night customer receives a frilly which customer will be the first to receive a free roles in a free Lilly
Answer:
The answer is actually the 3rd customer
Step-by-step explanation:
An employee at a toy store wants to put as many teddy bears as she can on a display. Each teddy bear weighs 14 pound. The display can hold a maximum of 14 pounds. How many teddy bears can the employee put on the display? Enter your answer in the box.
Answer:
56
Step-by-step explanation:
HELP ME PLEASEEEEEEEEEEEEE
Answer:
c
Step-by-step explanation:
c trust me
A wire is 71cm long . you wish to cut it into two pieces. One piece is bent into shape of triangle with legs of equal length .The piece is to be bent into shape of circle .
To solve this problem, we need to find the lengths of the two pieces when the wire is cut into two parts. Let's denote the length of each leg of the triangle as\(\(x\).\)
The perimeter of the triangle is the sum of the lengths of its three sides. Since the two legs are equal in length, the perimeter can be expressed as \(\(2x + x = 3x\).\)
The length of the wire is given as 71 cm, so we have the equation \(\(3x = 71\).\)
Solving for\(\(x\),\) we divide both sides of the equation by 3:
\(\(x = \frac{71}{3}\).\)
Now that we know the length of each leg of the triangle, we can proceed to the next part of the problem.
The circumference of a circle is given by the formula \(\(C = 2\pi r\)\), where\(\(C\)\)is the circumference and r is the radius. In this case, the wire of length xis bent into the shape of a circle, so we can set the circumference equal to x and solve for the radius r:
\(\(x = 2\pi r\).\)
Substituting the value of x we found earlier, we have:
\(\(\frac{71}{3} = 2\pi r\).\)
Solving for r, we divide both sides of the equation by \(\(2\pi\):\)
\(\(r = \frac{71}{6\pi}\).\)
Therefore, the two pieces of wire will have lengths\(\(\frac{71}{3}\)\)cm and the radius of the circle will be\(\(\frac{71}{6\pi}\)\) cm.
In summary, when the 71 cm wire is cut into two pieces, one piece will have a length o\(\(\frac{71}{3}\)\)cm, which can be bent into the shape of an equilateral triangle with legs of equal length, and the other piece can be bent into the shape of a circle with a radius of \(\(\frac{71}{6\pi}\)\) cm.
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