Answer:
225
Step-by-step explanation:
Mary = 3x (3 times Carey)
Carey = x
Barry = x/2 (Because Carey read twice as many as Barry, it means he read half the amount Carey did)
3x + x + x/2 = 405
4x + x/2 = 405
8x/2 + x/2 (treat these as fractions) = 405
9x/2 = 405
9x = 810 (cross multiply)
x = 90
Mary = 3(90) 270
Carey = 90
Barry = 90/2 45
Mary - Barry
270 - 45 = 225
Hope this helps! :)
I WILL MARK AS BRAINLIEST! Find the area and perimeter of the following figures
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
cole and rose are compairing their heights. cole is 7.1 meters tall. Rose is 20 centimeters shorter than cole
what is coles height
Answer:
150 meters is your answer hun.
Find the unit rate.
56 newspapers in 2 piles =
newspapers per pile
Answer: The answer is 28 per pile
Can someone help me with questions 22, 23, and 24 please I’ll appreciate it!
Answer:
for 24 Q it is 1/4
Step-by-step explanation:
Its so simple!
Please can you answer these Alegbra questions.
30 POINTS ON THE LINE AND BRAINLIEST
(Please answer in step by step)
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
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?
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
Find the unit rate.
10 minutes for 2 songs
=
minutes per song
Hi ;-)
10 minutes for 2 songs = 5 minutes per song
10 : 2 = 5
Answer:
5
Not to sure if it's correct
Step-by-step explanation:
10 ÷2= 5
Write 5/8 as a percent
A. 0.625
B. 62.5
C. 625%
D. 6.25
Question:- Write ⅝ as a percent
Answer:-
[tex] \frac{5}{8} [/tex]
For making it in percentage we need to multiple the fraction with 100
[tex] \frac{5}{8} \times 100\% \\ \frac{5}{ \cancel{8} {}^{ \: \: \: 2} } \times \cancel{100} {}^{ \: \: \: 25} \\ \frac{5 \times 25}{2} [/tex]
Now we will multiple and divide the above equation with 5 for easy solution. Or you can just divide the equation upto decimal for your answer
[tex] \frac{125}{2} \times \frac{5}{5} \\ \frac{625}{10} \\ 62.5 \: \% \: \: ans[/tex]
So your options (B) 62.5% is correct
Hello everyone, I have one more question. What is the formula for dividing decimals again? I reviewed this yesterday but continued to forget anyway.
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:
Select all ratios equivalent to 3:6.
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:
I WILL MARK BRAINLIEST! Graph each coordinate pair on the graph and then indicate which quadrant or axis the point lies on.
Answer:
Shown in order of table.
quadrant 3
quadrant 3
quadrant 2
quadrant 2
quadrant 4
quadrant 1
quadrant 4
quadrant 3
Step-by-step explanation:
The quadrants left to right on an x and y standard form graph are
quadrant 2 , then quadrant 1
quadrant 3 then quadrant 4
On an xyz graph they do not change the z line becomes y line and diagonal acending axes becomes y in example.
I have a question that says: Sound is used to measure ocean depth. Sound travels 1.5 km per second through water. If it takes 3.7 seconds for a sound to reach the bottom of the ocean, how deep is the water? It is not that I can't solve the problem, I don't know the problem is asking. The only thing I know is that it multiplication. Please help me.
Hey there!
All you need to do to answer this question is to do 3.7 x 1.5 = 5.55 km. I hope this helps you out. Have a good day :).
Find all the angles in each of the following triangles (image
attached)
Answer:
1.
solution :
x+2x+2x=180degree(sum of angle of triangle )
5x=180degree
x=180/5
x=36
therefore, x= 36
2x=2*36
=72#
I WILL MARK AS BRAINLIEST! Simplify
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^_^
how do you rewrite 2^-2
Answer:
[tex]2 ^{ - 2} \\ \frac{1}{2 ^{2} } \\ ( \frac{1}{2} ) ^{2} [/tex]
I hope it helped U
stay safe stay happy
Answer:
1/2^2
Step-by-step explanation:
When you have a number to a negative power, you can rewrite it inverting it's fraction and changing the signal of the power. 2 can be wrote as a fraction like 2/1, so you have 2^-2, it's like 2^-2/1, so you invert the fraction and the signal of the power, and have 1/2^2
Please help! Greatly appreciated. Thank you!
Answer: Q(7,-2), S(-3,6)
Step-by-step explanation:
please help! I will greatly appreciate it
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:
PLEASSEEE HELPPPPPPPPP I WILL GIVE BRAINLIEST
Answer:
The answer's below :)
Hope this helps <3
Find the number that makes the ratio equivalent to 3:2.
:24
Answer:
36:24
Step-by-step explanation:
24 divided by 2 which is 12 then 12x3 which is 36
I might be wrong but i think this is the answer.
Answer: 36 : 24
Step-by-step explanation:
3 / 2 = 12 * 3 / 12 * 2
= 36 / 24
= 36 : 24
Hope it helps !!
Does the expression 30 + (-23) represent the temperature at night?
How far was Zane from the edge of the volcano when he started climbing?
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.
please help, thank u :)
Answer:
answer is 4√10x^2Step-by-step explanation:
4√10x^2
-7/8 - ( -3/16 ) write your answer in simplest from
Answer:
-7/8 - ( -3/16 )
-7/8 + 3/16
Answer:
-11/16 or -0.6875
Step-by-step explanation:
-7/8-(-3/16)=
-7/8+3/16=
-11/16
or -0.6875
Given the line below.
Help me Guess just help please
you would try all becauseyou all try you are intilligent mare than other
Select all ratios equivalent to 14:4.
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
I need help on this question.
Answer:
answer for your question is 2) 5 and 7
Select all ratios equivalent to 1:2.
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! ;)
Translate into a phrase 2x+9
Step-by-step explanation:
2x is added with 9
OR
sum of 2x and 9.