Answer:
what's this
Step-by-step explanation:
I cannot anderstand
Find the dimensions of a rectangle whose perimeter is 30 meters and whose area is 56 square meters.
Answer: 8 and 7
Step-by-step explanation:
8 multiplied by 7 equals 56
8+8+7+7 equals 30 which is the perimeter
:)
The dimensions of the rectangle whose perimeter is 30 meters and whose area is 56 square meters are 7 meters and 8 meters.
What do we mean by the area of a surface?The area of a surface is the total space occupied by the two-dimensional cross-section.
What do we mean by the perimeter of an object?The perimeter of an object is the total length of its boundary.
How do we solve the given question?We are asked to find the dimensions of a rectangle whose perimeter is 30 meters and whose area is 56 square meters.
Let the length and breadth of the rectangle be l meters and b meters respectively.
We know that,
Perimeter of a rectangle = 2(length + breadth) = 2(l + b)
∴ 30 = 2(l + b)
or, 2(l + b) = 30
or, l + b = 15
or, b = 15 - l ...(i)
We know that,
Area of a rectangle = length*breadth = l*b
∴ 56 = l*b
or, l*b = 56
Substituting the value of b = 15 - l from (i) in the above equation, we get:
l(15 - l) = 56
or, 15l - l² = 56
or, l² - 15l + 56 = 0
or, l² - 8l - 7l + 56 = 0
or, l(l - 8) -7(l - 8) = 0
or, (l - 7)(l - 8) = 0
By zero-product law,
Either l - 7 = 0 ⇒ l = 7
Or, l - 8 = 0 ⇒ l = 8.
Substituting these values of l in (i),
b = 15 - l
∴ Either, b = 15 - 7 = 8
Or, b = 15 - 8 = 7.
In both cases, the dimensions of the rectangle are 7, and 8.
∴ The dimensions of the rectangle whose perimeter is 30 meters and whose area is 56 square meters are 7 meters and 8 meters.
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Find the Lowest Common Multiple (LCM) of 55 and 77.
Answer:
→ 55 = 5 × 11→ 77 = 7 × 11Now, the Lowest Common Multiple (LCM) of 55 & 77 is :
5 × 7 × 11 = 385385 is the right answer.Someone please help me
Answer: Pretty sure it's A
Step-by-step explanation: If you find the square root of 282 you get 16.7
Answer:
It is A
Step-by-step explanation:
It is A because you need to take the square roots of every number the square root of 282 is 16.7985562
Subtract 5x−2 from −3x+4 .
2x + 2
−8x+6
8x−6
−8x+2
Answer: -8x +6
Step-by-step explanation:
- 3x +4 - (5x -2)
-3x +4 - 5x + 2
-8x + 6
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I provide detailed explanations for math questions for as little as $1!
Answer:
-8x-6
Step-by-step explanation:
Amy and Samiha have a hat that contains two playing cards, one ace and one king. They are playing a game where they randomly pick a card out of the hat four times, with replacement. Amy thinks that the probability of getting exactly two aces in four picks is equal to the probability of not getting exactly two aces in four picks. Samiha disagrees. She thinks that the probability of not getting exactly two aces is greater. The sample space of possible outcomes is listed below. A represents an ace, and K represents a king.
Required:
Who is correct, Amy or Samiha?
Answer:
Amy
Step-by-step explanation:
Check (24, 144, 145) is a Pythagorean triplet
Answer:
Step-by-step explanation:
The given triplets are (16,63,65) . Let us assume 16 as the smallest even number, then it should be equivalent to 2m . From the above result we can say that triples (16,63,65) is a Pythagorean triplet. The given triplets are (24,144,145)
The factory needs to stamp 4,320 parts. How many minutes will it take all 4 stamping machines to stamp 4,320 parts.
A. 10 minutes
B. 15 minutes
C. 45 minutes
D. 60 minutes
Answer: 15 minutes
Step-by-step explanation:
4 stamping machines in factory
1 stamping machine = 24 parts every 20 seconds
4 stamping machines = 96 every 20 seconds
4 stamping machine = 288 stamps per minute
4320 stamps divided by 288 cuts = 15 minutes
Rlly important, is this the correct length?
Answer: yes
Step-by-step explanation: 14*12*5=840
the formula for volume is Lenght*widht*height
(W^2/x -3) / 10 •z when w=-6,x=1.2, and z = -6 /7
Answer:
21=121-2=11
Step-by-step explanation:
do step by step.
Tabular representations for the functions f, g, and h are given below. Write g(x) and h(x) as transformations of f(x).
9514 1404 393
Answer:
g(x) = f(x -1)
h(x) = f(x) +4
Step-by-step explanation:
g(x)We notice that the output values correspond to the output values of f(x), but the input to f(x) is 1 less than the corresponding input to g(x). For some given value of x, ...
g(x) = f(x -1)
__
h(x)The input values correspond to those for f(x), but the output values are all 4 more than for f(x).
h(x) = f(x) +4
Find f(-2) for
the function
below.
f(x) = 1/8 x 5^x
Answer:
f(-2) = 0.005
Step-by-step explanation:
f(x) = 1/8 x 5^x
f(-2) = When x in the function of f(x) is -2.
f(-2) = 1/8 x 5^-2
f(-2) = 1/8 x 0.04
f(-2) = 0.005
Help help please need homework
Answer:
√36<√26>√25
Step-by-step explanation:
please mark me as brainlest
y = mx + b
solve for m
solve for x
Answer:
mx=b-y
take like terms
x=b-y/x
Question 3 (Percentage)
3.1.
(2)
A student answered 45 problems on a test correctly and received a
grade 90%. How many problems were on the test, if all the problems were worth the same number
were worth the same number of marks? (Round to the nearest whole
number)
Explain what is the difference between fractions and percentages
and also state the relationship they have with each other
3.2.
(3)
3.3
(5)
40% of the 7920 visitors to an amusement park were children. 25% of
these children and 1/3 of the adults were repeat visitors. How many
percent of the visitors were visiting the amusement park for the first
time?
3.4
(4)
Percentage is not taught in foundation phase level. However, a
primary school has both foundation phase and intermediate phase.
If you were to be asked to teach a grade 4 level to substitute for an
absent teacher who was supposed to introduce the concept of
percentage to the grade 4 class using the topic already taught in
foundation phase. Give a brief description on how you will introduce
the concept of percentage using diagrams,
Te to search
13°C Rain showers
Answer:
A student answered 45 problems on a test correctly and received a
grade 90%. How many problems were on the test, if all the problems were worth the same number
were worth the same number of marks? (Round to the nearest whole
number)
100/90 * 45 = 50
-------------------------------------------------------------------------------------------------------------
Explain what is the difference between fractions and percentages
and also state the relationship they have with each other
The numbers which are decimals by nature can be represented in the form of fractions. For example, 0.5 can also be written as 5/10. ... Percentages refer to decimal numbers to the base 100. These are represented by a % (percent sign).Since a percent is a ratio a ratio can be written as a fraction. This means any of these forms can be converted to any of the others.
-----------------------------------------------------------------------------------------------------------
40% of the 7920 visitors to an amusement park were children. 25% of these children and 1/3 of the adults were repeat visitors. How many percent of the visitors were visiting the amusement park for the first time?
Total number of visitors = 7920
Find the number of children:
Children = 40% of 7920
Children = 0.4 x 7920
Children = 3168
Find the number of adults:
Adult = 7920 - 3168 = 4752
Find the number of repeated visitors that are children:
Repeated visitors = 25% x 3168
Repeated visitors = 0.25 x 3168
Repeated visitors = 792
Find the number of children that are visiting for the first time:
First time visitors = 3168 - 792 = 2376
Find the number of repeated visitors that are adult:
Repeated visitors = 1/3 x 4752
Repeated visitors = 1584
Find the number of adults that are visiting for the first time:
First time visitors = 4752 - 1584 = 3168
Find the total number of first time visitors:
Total number of first time visitors = 3168 + 2376 = 5544
Answer: There are 5544 visitors that are visiting for the first time
find the exact interest on a loan of $32,400 at 9% annually for 30 days
Answer:
G79URIFFJ8FJV88888RU8FF
Step-by-step explanation:
show the solution 4-2x>7+x
Answer:
x < -1
Step-by-step explanation:
how many times will the graph of y=3x^2-10 intersect the x axis
Answer:
2
Step-by-step explanation:
The discriminant is positve
discriminant- the quanity that depends on the coefficients and multiple properties of its roots
What does x equals (x+16)
Answer:
x+16=4x-5. {being vertically opposite angle}
16+5=4x-x
21=3x
or, 21/3=x
hence, x=7
Answer:
x = 7
Step-by-step explanation:
x + 16 = 4x - 5
16 + 5 = 4x - x
21 = 3x
21/3 = x
x = 7
HELP ASAP (MAX PTS) ILL GIVE BRAINLIEST
Domain is the x values and range is the y values.
Domain: (-5,-4, 0,1,3,4)
Range: ( 0,1,2,3,5)
Please help ASAP
I really have no clue what I’m supposed to do so please help me!!
Answer:
below
Step-by-step explanation:
Each column represent the number of packages of pencils and the total number of pencils you would have.
So column 1 says 1/2 package of pencils and there are 24 pencils in that package so you have 12 pencils total not 24 like it says.
Column 2 says 1 package of pencils. Since there are 24 pencils in a package, now you would have 24 pencils total.
Column 3 says 3 packages. 3 x 24 = 72 pencils total
Column 4 says 4 packages. 4 x 24 = 96 pencils total
Colum 5 says 6 1/2 packages. 6 x 24 = 144 and you know 1/2 of a package equals 12. So 144 + 12 = 156 total pencils.
What percent of 362.5 is 145?
Answer:
40%
Step-by-step explanation:
362.5 = 100% (1).
x = 40% (2).
(362.5%)/(x%) = 100/40
x%/362.5% = 40/100
x = 145
Hope this helps.
If i= -1, what is the value of i3?
O-1
Ο i
O 1
O -i
Answer:
I dont think this question is formated correctly. i does not equal to -1. However, If you are wondering about i^-3. it is -i. Otherwords it is D. Hope this helped.
Which of the following statements are true?
A) If two angles form a linear pair, then the angles are supplementary.
B) If two angles are right angles, then the angles are complementary.
C) If two angles have the same measure, then the angles are congruent.
D) If two angles are supplementary, then the angles are acute.
Answer:
There are two statements that are correct, A and C.
A man placed $10,600 in a fixed deposit for 8 years at 6% per annum.
a) Calculate the total amount received at the end of the period under simple interest.
b) Determine the total amount received at the end of the period under compound interest.
c) State the difference in the interest received
Answer:
and hello
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Elliott states that he absolute value and opposite of a number are the same thing. Is Elliott correct? Explain.
Answer:
Elliot is incorrect
Step-by-step explanation:
Let's take an example: 2
Absolute value of 2 = |2| = 2
But the opposite of 2 = -(2) = -2
But 2 ≠ 2, so Elliott is incorrect.
The opposite of a number changes the sign from - to +, or + to -. Absolute value changes the sign of a number from - to + and keeps + as +.
-Chetan K
Answer:
No
Step-by-step explanation:
The absolute value of a number is the distance from 0. Distance is always positive, so the absolute value of a number is that number but positive. Thus, the absolute value of |2| is still 2. However, the opposite of a number is that number on the opposite side of 0. Therefore, the opposite of 2 is -2. To find the opposite of a number just flip the sign.
So, these are different because the absolute value is always positive while the opposite can be either sign.
Please can someone help much appreciated .
Answer:
23/6
Step-by-step explanation:
23
6
select another name for m<1
please help.
Answer:
<DAC
Step-by-step explanation:
label angles with their variable points
HELP ME!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
1x a other b
Step-by-step explanation:
simple
The equivalent expression is 7x - 2(1.3x + 3.5) = 5.4x - 7 and non-equivalent expression is 8 - 4(-2.2x + 1.1) = 8.8x + 12.4 .
What are linear expression ?A linear expression only has one or two variables. No variables in a linear expression is raised to power greater than 1 or used as denominator of a fraction.
Now the given expressions are,
7x - 2(1.3x + 3.5) = 5.4x - 7 ....(i)
and,
8 - 4(-2.2x + 1.1) = 8.8x + 12.4 .....(ii)
Taking equation (i)
7x - 2(1.3x + 3.5) = 5.4x - 7
So, LHS = 7x - 2(1.3x + 3.5)
⇒ LHS = 7x - 2.6x + 7
or, LHS = 5.4x + 7
⇒ LHS = RHS
So these expressions are equivalent.
Taking equation (ii),
8 - 4(-2.2x + 1.1) = 8.8x + 12.4
So, LHS = 8 - 4(-2.2x + 1.1)
⇒ LHS = 8 - 8.8x - 4.4
⇒ LHS = -0.8x - 4.4
⇒ LHS ≠ RHS
So these expressions are not equivalent.
Thus, the equivalent expression is 7x - 2(1.3x + 3.5) = 5.4x - 7 and non-equivalent expression is 8 - 4(-2.2x + 1.1) = 8.8x + 12.4.
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What is the volume of the figure?
Answer: 1134 inches cubed
a survey of statistics students asked how much time they spent on a computer during a 24 hour period. The results of the survey are provided in the table. Identify the model class for the distribution.
Answer:
the answer is more than 241 because 0-60 minutes time 8 would be 480 but 241 time 2 is 482
The model class for the distribution is 0-60. Therefore, option A is the correct answer.
Given that, a survey of statistics students asked how much time they spent on a computer during a 24-hour period.
We need to identify the model class for the distribution.
What is the model class?The modal class is the class with the highest frequency. We know that the mode is the number or observation that most often appears. So, the modal class is the class in grouped data that contains the mode. That means the class that has the highest frequency is the modal class of the grouped data.
Now, from the given data table we can see the highest frequency is corresponding to the class 0-60.
The model class for the distribution is 0-60. Therefore, option A is the correct answer.
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