Pre-algebra
8th grade
I will give everything that I can give you I just need to understand this
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Related Questions
Select all ratios equivalent to 3:6.
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Step-by-step explanation:
3:6=3/6=1/2
28:36=28/36=7/8
4:9=4/9
8:16=8/16=1/2
Hence, 8:16 is equivalent to 3:6.
I hope it helped U
stay safe stay happy
Answer:
3:6=3/6=1/2
28:36=28/36=7/8
4:9=4/9
8:16=8/16=1/2
Step-by-step explanation:
How far was Zane from the edge of the volcano when he started climbing?
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Answer:
Hope this helps
accoding to the web "He started out 25 meters below the edge of the volcano. It takes him 6.25 seconds to reach the edge."
Answer:
25 meters below the edge; 6.25 seconds
Step-by-step explanation:
We can represent this with a linear function in slope-intercept form.
We know the rate of change is 4 since he climbs up at 4 meters per second. We do not know the value of b, the y-intercept.
This gives us
y = 4x + b
We know that he is 13 meters below the edge after 3 seconds. Using -13 for y and 3 for x,
-13 = 4(3) + b
-13 = 12 + b
Subtract 12 from each side:
-13-12 = 12+b-12
-25 = b
This gives us the equation
y = 4x - 25
He started out 25 meters below the edge of the volcano.
To find how long it took him to reach the edge, substitute 0 in for y:
0 = 4x - 25
Add 25 to each side:
0+25 = 4x-25+25
25 = 4x
Divide both sides by 4:
25/4 = 4x/4
6.25 = x
It takes him 6.25 seconds to reach the edge.
What is the step by step explanation on how to solve 8 1/2 + 3 4/5? I already know the answer is 12.3 but I just need help on the how to do the work.
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To add the fractions, 1/2 + 4/5, you need a common denominator. With 2 and 5, you’d have an LCD of 10.
1/2 = 5/10
4/5 = 8/10
So 1/2 + 4/5 = 5/10 + 8/10 = 13/10
Now, 13 is bigger than 10, so 13/10 is the same as 1 and 3/10.
We’ll add that to the 11 we found back in the beginning and get 11 + 1 and 3/10 = 12 and 3/10 or 12.3.
½ a bottle of cola is shared between 3 children. What fraction of the bottle will they each get
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Answer:
1/6
Step-by-step explanation:
6.4 x- 10 = 4.4x + 6
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Answer:
x=8
Step-by-step explanation:
2x=16
x=16/2
x=8
that should be the answer
Answer:
8
Step-by-step explanation:
Help me Guess just help please
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Answer:
it would be no <3
Step-by-step explanation:
because it has no integers and any rational number are expressed by a pq :)
Answer:
Naaa
Nope
Notta
No way
Step-by-step explanation:
get the point
please help! I will greatly appreciate it
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Answer:
(1 1/4, -3/4)
Step-by-step explanation:
The x value, it is 1 and 1/4 units to the right of 0 so its 1 1/4
The y value, it is 3/4 units below 0 so -3/4
Coordinates = (x,y) so it is (1 1/4, -3/4)
If my answer is incorrect, pls correct me!
If you like my answer and explanation, mark me as brainliest!
-Chetan K
Answer:
A
Step-by-step explanation:
please help it would mean a lot thanks ! :)
How does this graph change between (2.5, 2) and (4.5, 0.25)?
increases
decreases
or
no change
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Given the line below.
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Randall has 19 coins in his pocket. 12 are quarters, and the others are pennies. Randall selects two coins at random from his pocket replacing each coin before drawing the next coin. Which answer choice best describes this event?
A. This is an independent event because he is replacing the coin before drawing the next one.
B. This is a dependent event because he has different amounts of coins in his pocket.
C. This is an independent event because he could select a quarter and then a penny.
D. This is a dependent event because he could select a quarter and then a penny.
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Answer:
it might be C
Step-by-step explanation:
I'm just guessing
Select all ratios equivalent to 1:2.
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Answer:
10:20 and 4:8 I think .........
Answer:
The answer is the last 2
Step-by-step explanation:
10:20 can simplify to 1:2. 4:8 can also simplify to 1:2. 24:12 simplifies to 2:1, so that isn't the same.
If this helped, please mark me as brainliest. Thank you! ;)
Given the line below.
Write the equation of the line, in point-slope form. Identify the point (-2, -2) as (x1, y1). Use the box provided to submit all of your calculations and final answer.
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Answer:
Step-by-step explanation:
Can someone help me with questions 22, 23, and 24 please I’ll appreciate it!
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Answer:
for 24 Q it is 1/4
Step-by-step explanation:
Its so simple!
24=1/4 it’s simple yk
23= volume : l*w*h didn’t got don’t round your answer...
Find the unit rate.
12 books in 2 boxes
books per box
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Answer:
6
Step-by-step explanation:
12 per2
=12/2
=6 per box
Select all ratios equivalent to 5:4.
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Step-by-step explaining
Answer: 25 : 20
Step-by-step explanation:
= 5 * 5 = 25
= 4 * 5 = 20
So , the answer is 25 : 20
So, can someone help me with this?
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which number produces an irrational number when added to 1/4
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Answer:
A. 0.545454 - 1/4 = 0.295454 yes this is an irrational number
C. 3.4641016 - 1/4 = 3.2141016 yes this is an irrational number
Step-by-step explanation:
A. 0.545454 - 1/4 = 0.295454 is an irrational number as the closest fraction is shown below at 3 decimal points only
As this can be converted to a fraction 147727 /500000 ≈ 0.295
B. - 4/9 - 1/4 = -0.694444444 is not an irrational number so answer is no
As this can be converted to a fraction -173611111 / 250000000
To write 0.694444444 as a fraction you have to write 0.694444444 as numerator and put 1 as the denominator. Now you multiply numerator and denominator by 10 as long as you get in numerator the whole number.
0.694444444 = 0.694444444/1 = 6.94444444/10 = 69.4444444/100 = 694.444444/1000 = 6944.44444/10000 = 69444.4444/100000 = 694444.444/1000000 = 6944444.44/10000000 = 69444444.4/100000000 = 694444444/1000000000. Then divide by 470 and we know to use this some as 250000000/531915 = 470
C. 3.4641016 - 1/4 = 3.2141016 yes this is an irrational number
closest fraction is only 4 significant figures
4017627 / 1250000
=3 and 267627 over 12500003
267627 /1250000
≈3.214 so in closer proof it is an irrational number.
D. sq rt 4 - 1/4 = 1.75 is not an irrational number as this fraction is 7/4 = 1 3/4
I WILL MARK AS BRAINLIEST! Find the area and perimeter of the following figures
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Step-by-step explanation:
it is really not complicated. we only need to type the numbers into the calculator.
so, what's the problem ? you don't know what a perimeter is ? it is the circumference, the total way you have to go when waking all around the figure.
you don't know the formulas for the areas of specific figures ?
let's start :
a)
the area of a rectangle is length×width. I hope you know this at least since first grade.
the important thing here is : the result is in² and not just in. it means an area counts the little squares that fill that area.
A = 30×8 = 240 in²
the perimeter, as explained, is the whole way around it. so, in the end, as you can easily see, we would have to go 2 times the long side and 2 times the short side.
the result is in (just a length, a distance not an area, not a cube, ...).
P = 2×30 + 2×8 = 60 + 16 = 76 in
b)
the area of a triangle is
baseline × height / 2
in this case (a right-angled triangle) we can assume one of the sides enclosing the 90 degree angle as baseline and the other as height (since there is already a 90 degree angle between them).
and again, the result is ft². we could express it also e.g. as in², but since the basic measures are in ft, it makes it better understandable to use ft².
A = 12×5/2 = 6×5 = 30 ft²
the perimeter is even easier than for the rectangle, as we have one side less to count.
and as before, we stay with ft.
P = 12 + 13 + 5 = 30 ft
c)
this is the only more special case.
but it is still easy.
the area is baseline × height.
and our unit of measurement here is cm, so the result will be cm².
A = 10×2 = 20 cm²
the perimeter is the same principle as with a regular rectangle, as the angles don't matter. only the side lengths matter.
so, again, while waking around it, we have to pass 2 times the long side and 2 times the short side.
and the result is a length, a distance again, so, it is cm.
P = 2×10 + 2×4 = 20 + 8 = 28 cm
2. A= 30 feet squared. P=30 feet
3. A= 20 cm squared P= 28 cm
I WILL MARK AS BRAINLIEST! Simplify
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a) | -21 -17| = | - 38 | = 38
b) | 39 - 26 | = | 13 | = 13
c) | -17 -79 | = | - 96 | = 96
d) | -9+25 |= | 16 | = 16
e) | -21 -61 |= | - 82 | = 82
f) | 61-74 |= | - 13 | = 13
g) | -31 -79 |= | - 110 | = 110
h) | -12 +55 | =| 43 | = 43
I hope I helped you^_^
Find the unit rate.
56 newspapers in 2 piles =
newspapers per pile
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Answer: The answer is 28 per pile
HELPPPPPP meeeeeeeeeeeeeeeeeeeeeeeeeee
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please help math i need ittt
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1/3 of that distance is 7, so you need Q to be 7 units from P towards R.
-16 + 7 = -9
So, Q is at -9.
Select all ratios equivalent to 14:4.
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Answer:
the first option
Step-by-step explanation:
21:6=7:2
14:4=7:2
Answer:
Only option a is equivalent to the given ratio.
I hope it helped U
stay safe stay happy
Help me wit math questionsssss plssss
Answers
i think its 3 x 10³
Answer:
3x10^3
Step-by-step explanation:
For each set of measurements, decide whether or not it is possible to draw a triangle with those measurements. If it is possible, draw the triangle.
a. Side lengths 2 cm, 3 cm, and 4 cm
b. Side lengths 2 cm, 3 cm, and 6 cm
c. Angles 90 degrees, 45 degrees, and 45 degrees
d. Angles 90 degrees , 60 degrees, and 60 degrees
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Answer:
only A & C possible
Step-by-step explanation:
the sum total of the two smallest sides should be bigger than the third.
the sum total of the three interior angles should be 180 degree
The figure on the left is reflected using the y-axis to form the image on the right. Use the information in the original figure to find the measure of side A, side B, angle C and angle D.
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Please show all work and explanation.
[tex]6\frac{1}{4}-4\frac{3}{5}[/tex]
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Steps:
6 1/4 - 4 3/15 can also be written as 25/4 - 23/5
The LCD of 4 and 5 is 20.
That gives us 125/20 - 92/20.
Now, just subtract the numerators (leave the denominators the same).
That brings us to 33/20, which can be simplified to 1 13/20
Final Answer:
[tex]1\frac{13}{20}[/tex]
--------------------------------------------------------------------------------------------------------------
*Please mark brainliest if that helped!*
Answer:
1 [tex]\frac{13}{20}[/tex]
Step-by-step explanation:
1. Convert both [tex]\frac{1}{4}[/tex] and [tex]\frac{3}{5}[/tex] into a common denominator. 4 multiplied by 5 is 20. 20 works for both 4 and five. So convert the denominator into 20. Multiply [tex]\frac{1}{4}[/tex] by [tex]\frac{5}{5}[/tex] and multiply [tex]\frac{3}{5}[/tex] by [tex]\frac{4}{4}[/tex]
2. You should've gotten, [tex]\frac{5}{20}[/tex] and [tex]\frac{12}{20}[/tex]
3. 6 - 4 = 2, so 2 [tex]\frac{5}{20}[/tex] - [tex]\frac{12}{20}[/tex]
4. You have to convert 1 into [tex]\frac{20}{20}[/tex] and add that to [tex]\frac{5}{20}[/tex]. You should've got [tex]\frac{25}{20}[/tex]
5. Subtract.
The Answer is 1 [tex]\frac{13}{20}[/tex]
I believe I am correct.
Please mark me as brainliest if I am correct
A car factory made 8 cars with a sunroof and 18 cars without a sunroof what is the ratio of the number of cars without a sunroof to the total number of cars?
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Answer:
No of cars without sunroof=18
Total no of cars=18+8=26
Now,the ratio of cars without sunroof to total no of cars=18÷26
= 9÷13
Did your teacher what answer is simplest form? If so put 9/13
If she just wants ratio 18/26
Marcie solved the following inequality, and her work is shown below:
−2(x − 5) ≤ 6x + 18
−2x + 10 ≤ 6x + 18
−8x +10 ≤ 18
−8x ≤ 8
x ≤ −1
What mistake did Marcie make in solving the inequality?
A. She subtracted 6x from both sides when she should have added.
B. She subtracted 10 from both sides when she should have added.
c. She did not make a mistake.
D. When dividing by −8, she did not change the direction of the sign.
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Answer:
d
Step-by-step explanation:
Hello everyone, I have one more question. What is the formula for dividing decimals again? I reviewed this yesterday but continued to forget anyway.
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Answer:
multiply the divisor by as many tens as necessary until we get a whole number, and remember to multiply the dividend by the same number of tens.
Step-by-step explanation: