Which number choice represents an equivalent number sentence that uses the associative property to rewrite "(4 + 5) + 8"?
A. 4 + 8 + 5
B. 4 + 13
C. 4 + (5 + 8)
D. 17
Answers
Answer:
A 4 + 8 + 5
thats the answer thank you
Answer:
Your answer is: A & C
Step-by-step explanation:
Hope this helped : ) Even though I probably wont get brainiest, please at least rate me : )
Related Questions
what is the difference between 4 hundredths and 8 ten thousandths?
Answers
Answer:
i think its 0.0392
Step-by-step explanation:
sorry if its wrong
please help 20 points
Answers
Answer:
your best bet is A
You could do divideding to solve
an then think of another stratigy
Step-by-step explanation:
help me pls? thank you
Answers
i think its c (a picture of a city )
Answer:
C. A picture of a city
**Brainliest would be appreciated**
Step-by-step explanation:
Multiply the pairs of numbers and match them with their products. Tiles (-5)(4.2) (-7)(-3) (4) (5) (2.5)(-9) Pairs 22.5 21 -22.5 -21 111
Answers
Here are the pairs matched with their products:
- (-5)(4.2) matches with -21
- (-7)(-3) matches with 21
- (2.5)(-9) matches with -22.5
Pairs (4) and (5) do not have corresponding products in the given options.
(-5)(4.2) = -21
(-7)(-3) = 21
(4)(5) = 20
(2.5)(-9) = -22.5
So, the pairs of numbers and their products are as follows:
(-5)(4.2) = -21 matches with -21.
(-7)(-3) = 21 matches with 21.
(4)(5) = 20 matches with 20.
(2.5)(-9) = -22.5 matches with -22.5.
I hope this helps!
What is the equation of the line that passes through the point (-2,7) and is perpendicular to the line x-4y = 24?
Answers
step by step—
Answer:y = -4x - 1
Step-by-step explanation:
x - 4y = 24
-4y = -x + 24
y = x - 6
m⊥ = -4
y = -4x + b
7 = -4 ( -2 ) + b
7 = 8 + b
b = -1
y = -4x - 1
Find the perimeter of this shape.
Answers
Answer:
draw a line that makes a triangle and rectangle.
hypotenuse= 30
3k-4k-5k triangle
18-24-30
so the short part of triangle is 18 cm
10+10+18+24+30 equals 92
sorry for language I am not familiar with English
the perimeter of this shape is
24+10+10+30+\(\sqrt{30^{2} -24^{2} }\) = 92 cm
zoey is using an open number line. she wants to find 232+578. which addend should she place on the number line to start? explain
Answers
Answer:
To add 232 and 578, Zoey should start by placing the smaller addend, which is 232, on the number line. She can then add the larger addend, which is 578, by counting up from 232.
Here's how Zoey can do it:
Draw an open number line and label it from 0 to 800, with tick marks for every 100 units.Mark the starting point for 232 on the number line.To add 578, Zoey can count up from 232 by 100s until she reaches 578.She can count 100, 200, 300, 400, 500, and 600, which brings her to 832.However, she only needs to add 578, so she can stop at the point on the number line labeled 810.Therefore, Zoey should place 232 on the number line to start adding 232 and 578.
Zoey should place the addend 232 on the number line to start.
What is Number Line?A number line is a straight line drawn horizontally where the numbers are placed at an equal intervals.
Number line has numbers 232 and 578 marked at different points.
In order to find the sum of these two addends, we have to place the smaller addend at the start.
Here 232 is the smaller addend
578 is the larger addend.
Start with the smaller one, 232.
Then add the larger addend to it.
Hence the addend that should be started with is 232.
Learn more about Number lines here :
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Referring to the Fig, this sequence of toothpick figures has 6
toothpicks in Term 1, 11 toothpicks in Term 2, and 16 toothpicks in
Term 3. What rule can be used to find the number of toothpicks for
any term of the sequence?
a. term number × term number + 7
b. term number × 5
c. term number × 5 + 1
d. term number + 5
Answers
help me i will give you 18 points of you answer this one
Answers
Answer:
(4,1)
Step-by-step explanation:
y=4
x=1
this is not my cup of tea but I'm pretty sure this is the answer
Answer:
4
Step-by-step explanation:
Do this the same way as the last time you had this type of problem.
The indicated point is (1, 4)
constant of proportionality
y/k = 4/1
y/x = 4
translate 5[2(4) + 3 +4] into a verbal expression
Answers
Answer: five times two times four plus three plus four
Step-by-step explanation:
5[2(4) + 3 +4]
whenever you have a number next to a bracket, like [ or ( ,it always means multiply. So thats how i know 5[2(4) means "five times two times four" as a verbal expression. The last part is "3+4" which translates to "three plus four"
I hope this is correct!!!
Brass is made from a mixture of copper and other elements. A mixture that is 80% copper is combined with a mixture that is 60% copper, resulting in 100 pounds of brass that is 65% copper.
Which equation can be used to find x, the amount of 60% mixture used to create the 65% mixture?
0.8(100 – x) + 0.6x = 100(0.65)
0.6(100 – x) + 0.8x = 100(0.65)
0.8(100) + 0.6x = 0.65(100 - x)
0.6(x) + 0.8(100 + x) = 0.65
Answers
Answer:
a.0.8(100 – x) + 0.6x = 100(0.65)
Step-by-step explanation:
The easiest way to find the answer is to derive the equation from the the data given.
The amount of 60% mixture is given as .
The amount of copper from 60% mixture =
The amount of copper from 80% mixture =
Therefore total amount of copper in 100 pound mixture is:
The amount of copper from 60% mixture + The amount of copper from 80% mixture
We can rearrange the equation as:
Percentage of copper in the final mixture can be derived by:
[Total pounds of copper/Total pounds of the mixture]×100
Percentage of copper in the final mixture is given as 65%
Therefore,
[Total pounds of copper/Total pounds of the mixture]×100=65%
This equation can be used to find the value of ..
Therefore the answer is a.0.8(100 – x) + 0.6x = 100(0.65)
The proportion of copper in each component of the resulting mixture is the
component that they contribute to the resulting mixture.
The equation that can be used to find x, the amount of 60% mixture used to create the 65% mixture is; \(\underline{0.8 \cdot (100 - x) + 0.6 \cdot x = 100 \cdot (0.65)}\)Reasons:
The given parameters are;
Percentage of copper in one of the mixture = 80%
Percentage of copper in one of the other mixture = 60%
Percentage of copper in the resulting 100 pounds = 65%
The amount of the 60% mixture used in the 65% mixture = x
Therefore;
The amount of the 80% mixture used in the 65% mixture = 100 - x
Mass of copper from 60% mixture in the resulting mixture = 0.6·x
Mass of copper from 80% mixture in the resulting mixture = 0.8·(100 - x)
Mass of copper in the resulting mixture = 100 × 0.65
Which gives;
\(\underline{0.8 \cdot (100 - x) + 0.6 \cdot x = 100 \cdot (0.65)}\)
Learn more about the concentration of mixtures here:
https://brainly.com/question/25083728
Which of the following shows 1,436 correctly rounded to the tens place?
1,400
1,000
1,440
1,430
Answers
Answer:
1,440
Step-by-step explanation:
36 is closer to 40
pls help will give brainliest
Answers
Answer:
In step three.
I hope this helps and teaches you a lesson.
A shape is shown on the graph:
A coordinate grid is shown from positive 8 to negative 8 on the x-axis and from positive 8 to negative 8 on the y-axis. A triangle is shown on ordered pair 2, 2 and 4, 2 and 2, 6.
Which of the following is a reflection of the shape?
A coordinate grid is shown from positive 8 to negative 8 on the axis and from positive 8 to negative 8 on the y-axis. A triangle is shown on ordered pair negative 2, 2 and negative 4, 2 and negative 4, 6.
A coordinate grid is shown from positive 8 to negative 8 on the x-axis and from positive 8 to negative 8 on the y-axis. A triangle is shown on ordered pair 2, negative 2 and 4, negative 2, and 2, negative 6.
A coordinate grid is shown from positive 8 to negative 8 on the axis and from positive 8 to negative 8 on the y-axis. A triangle is shown on ordered pair negative 2, 2 and negative 2, 4 and negative 6, 2.
A coordinate grid is shown from positive 8 to negative 8 on the axis and from positive 8 to negative 8 on the y-axis. A triangle is shown on ordered pair 2, negative 2 and 2, negative 4 and 6, negative 2.
Answers
Answer:
Im going to have to go with A or B
Step-by-step explanation:
Technically A and B could be right, but what the problem says is that it's transferred from a positive 8 to a negative 8 so in this system of equations you would need to find the best possible point and i would go with B. Thats just what i think. Now i did work it out but i may have made a mistake so if im wrong Im so very sorry. And also if someone else answers can i please have brainliest?
Thanks in advance
Answer: A
Step-by-step explanation:
Given 11 different natural numbers, none greater than 20. Prove that two of these can be chosen, one of which divides the other.
Answers
Answer:11 honestly have no idea but im going to give my best answer it is 31
Answer:
777 838 3
Step-by-step explanation:
sood
If on a scale drawing 5 inches represents 80 feet, then 3/4 inch would represent how many feet?
16 feet
8 feet
12 feet
4 feet
Answers
Answer:
12 feet
Step-by-step explanation:
80 / 5 = 16
1 inch = 16
16 / 4 = 4
4 * 3 = 12
Question 7(Multiple Choice Worth 5 points)
(05.01 LC)
Which equation can be used to calculate the area of the shaded triangle in the figure below?
[ image ]
A // 2(12 + 4) = 32
B // fraction 1 over 2(12 + 4) = 8
C // 2(12 × 4) = 96
D // fraction 1 over 2(12 × 4) = 24
Answers
Answer:
D
Step-by-step explanation:
Area of the triangle is (12 x 4)/2 = 12 x 4 x 1/2 = 24
D
step by step
This scatter plot shows the relationship between the time studied and the percent score on an exam taken by 11 students in a class. Noting the trend in the scatter plot, which is the most reasonable approximation of the percent score earned by a student who studies for 120 minutes for this test?
Answers
Answer:
Step-by-step explanation:
On Wednesday, 50 cars received parking tickets. The next day only 24 cars received parking ticket.
What is the percent change?
Answers
Answer: -52
Step-by-step explanation:
Answer: -52%
Step-by-step explanation: Number of tickets received on Wednesday = 50
Number of tickets received on the next day = 24
Difference = 24 - 50 = 26
Percentage = -26/50 x 100% = -52%
Can someone plz help me with this one problem!!!
Answers
Answer:
yes
Step-by-step explanation:
Answer:
no
Step-by-step explanation:
Paloma ran 3 3/4 miles around the school track. If each lap is 1/2 mile , how many laps did she run?
Answers
I need help asap ^-^
Which equation results from adding the equations in this system?
Answers
Answer:
Step-by-step explanation:
the answer is C chose c
Answer: -8+14=6
Step-by-step explanation:
Use the Midpoint Rule with \(n=5\) to estimate the volume obtained by rotating about the y-axis the region under the curve \(y=\sqrt{1+x^3}\), \(0\leq x\leq 1\).
Answers
To estimate the volume using the Midpoint Rule with \(\displaystyle n=5\), we need to divide the interval \(\displaystyle 0\leq x\leq 1\) into \(\displaystyle n\) subintervals of equal width. Since \(\displaystyle n=5\), each subinterval will have a width of \(\displaystyle \Delta x=\frac{1-0}{5}=\frac{1}{5}\).
Now, let's calculate the volume using the Midpoint Rule. The formula for the volume obtained by rotating about the y-axis is:
\(\displaystyle V\approx 2\pi \sum _{i=1}^{n}y_{i}\Delta x\)
where \(\displaystyle y_{i}\) represents the value of the function \(\displaystyle y=\sqrt{1+x^{3}}\) evaluated at the midpoint of each subinterval.
First, let's find the midpoints of the subintervals. Since the width of each subinterval is \(\displaystyle \Delta x=\frac{1}{5}\), the midpoint of the \(\displaystyle i\)-th subinterval is given by:
\(\displaystyle x_{i}=\frac{\Delta x}{2}+\left( i-\frac{1}{2}\right) \Delta x=\frac{1}{10}+\left( i-\frac{1}{2}\right) \frac{1}{5}\)
Substituting \(\displaystyle x_{i}\) into the function \(\displaystyle y=\sqrt{1+x^{3}}\), we obtain:
\(\displaystyle y_{i}=\sqrt{1+\left( \frac{1}{10}+\left( i-\frac{1}{2}\right) \frac{1}{5}\right) ^{3}}\)
Now, we can calculate the approximate volume using the Midpoint Rule:
\(\displaystyle V\approx 2\pi \sum _{i=1}^{5}y_{i}\Delta x\)
Substituting the values of \(\displaystyle y_{i}\) and \(\displaystyle \Delta x\) into the formula, we can evaluate the sum and compute the estimated volume.
\(\huge{\mathfrak{\colorbox{black}{\textcolor{lime}{I\:hope\:this\:helps\:!\:\:}}}}\)
♥️ \(\large{\underline{\textcolor{red}{\mathcal{SUMIT\:\:ROY\:\:(:\:\:}}}}\)
Probability and Likelihood
A team of scientists is studying the animals at a nature reserve. They capture the animals, mark them so they can identify each animal, and then release them back into the park. The table gives the number of animals they’ve identified. Use this information to complete the two tasks that follow.
Animal Total in Park Number Marked
[elk 5,625 225]
[wolf 928 232]
[cougar 865 173]
[bear 1,940 679]
[mountain goat 328 164]
[deer 350 105]
[moose 215 86]
Answers
Answer:
i dont understand the words of these problems
Step-by-step explanation:
Use the best-fit line below to predict the value of y when x = 7
Answers
Answer:
the answer is 6 because when x=7 on the line it is also equal to 6 on the y axis
Suppose a certain breed of dog loses about 75 hairs per day. What integer represent this change in the amount of hair per week write a mathematical argument that can be used to defend your solution
Answers
Answer:
75 hairs/ day = 525 hairs / week
Step-by-step explanation:
so your base question for this is 75 hairs/ day =? h/ week. how? if the dog is losing 75 hairs per day, then you would do 75 x 7 becuase there are 7 days in a week. the answer to that would give you how many hairs the dog was losing per week. (see attached image for reference)
Hope this helps!
#MRS
Please help me! I will give brainly!
A law in Washington, D.C., restricts a new building's height to no more than 20 feet taller than the width of the street it faces. You design a building with stories that are each 15 feet tall for a street that is 88 2/3 feet wide. What is the greatest number of stories your building can have?
_______ Stories
How much shorter is your building than the height restriction?
________Feet
Answers
It can be up to 20 feet taller so add 20
To the width:
88 2/3 + 20 = 108 2/3
Divide total height by the height of one story:
108 2/3 / 15 = 7.24
The building can have 7 stories.
b. 7 x 15 = 105 total feet
108 2/3 -105 = 3 2/3 feet below the restrictions
Which of these situations can be represented with an integer that, when combined with the opposite of −5, makes 0?
Select all that apply.
A.
You earn $5 from your chores.
B.
You walk down 5 flights of stairs.
C.
The temperature drops 5°F.
D.
You climb up 5 flights of stairs.
E.
You spend $5 on a game.
Plz help plz I will give points and brain list
Answers
Walk Down and Climb Up is both opposite.
If you climb up 5 flights of stairs will give zero. The correct option is D.
What is an expression?Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.
Given that situations can be represented with an integer that, when combined with the opposite of −5, makes 0.
If you climb up 5 flights of stairs it will give the positive value of 5 when it is added to -5 then it will give zero.
Therefore, If you climb up 5 flights of stairs will give zero. The correct option is D.
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need fast
Simplify the expression.
the expression negative three fifths times k minus 9 plus the expression 6 plus one fourth times k
negative 7 over 20 times k plus negative 3
7 over 20 times k plus negative 3
negative 2 over 9 times k plus negative 15
negative 17 over 20 times k plus negative 15
Answers
Answer:
\(-\frac{7}{20}k-3\) (or negative seven over twenty times k plus negative 3)
Step-by-step explanation:
Step 1: Write out into numeral form
\(-\frac{3}{5}k-9+6+\frac{1}{4} k\)
Step 2: Factor out the common term
\(k(-\frac{3}{5} + \frac{1}{4})-9+6\)
Step 3: Find a common denominator
\(k(-\frac{12}{20}+\frac{5}{20} )-9+6\)
Step 4: Add and Distribute
\(-\frac{7}{20}k-9+6\)
Step 5: Simplify
\(-\frac{7}{20}k-3\)
Hope this helped!
I need help on these 5 questions:
Answers
Step-by-step explanation:
(2x-3)² - (4x+1)(x − 4)
4x² - 12x + 9 - 4x² - 16x + x - 4
group like terms
4x² - 4x² - 12x+x+9-4
-11x + 5