There are two atoms of hydrogen and one atom of oxygen in one molecule of water . How many atoms of hydrogen are there in 51 molecules of water ?
If there are two hydrogen atom molecules in one atom of water you'd do 51 times 2, getting you 102 hydrogen atoms in 51 water molecules.
There are 102 atoms of hydrogen are there in 51 molecules of water.
Given that,
There are two atoms of hydrogen and one atom of oxygen in one molecule of water.
We have to find,
How many atoms of hydrogen are there in 51 molecules of water.
According to the question,
There are two atoms of hydrogen and one atom of oxygen in one molecule of water.
Therefore,
Atoms of hydrogen are there in 51 molecules of water is,
= 2 × 51 = 102 atoms of hydrogen
Hence, there are 102 atoms of hydrogen are there in 51 molecules of water.
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If a credit card company charges 13.5% yearly interest, which of the following calculations would be used in the process of calculating the monthly interest rate?
Answer:
(1.135)^[tex]^1/12[/tex]
Step-by-step explanation:
The monthly interest rate is 1.125%
What is rate of change?
The rate of change of a function is the rate at which the output values change over the input value.
The rate of change of a function is one degree less than the actual function.
Here, it is given that :
a credit card company charges 13.5% yearly interest
therefore, to find the rate of interest charged per month divide 13.5% with 12 :
rate of interest charged per month = 13.5%/12
rate of interest charged per month = 1.125%
Therefore, the monthly interest rate is 1.125%
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find the slope of the line that passes through the points 1,-9 and -3,-9
Answer:
It's 0
Step-by-step explanation:
Pleaseee I really need help I only got 45
A local little league has a total of 70 players, of whom 40% are left-handed. How marly
left-handed players are there?
There are left-handed players.
Answer:
28
Step-by-step explanation:
Multiply 70 * 0.4
Answer:
28
Step-by-step explanation:
half of 70- 10% of that
help me with this math problem...
Answer:
x=11
Step-by-step explanation:
2x + 40 = 62
-40 -40
2x= 22
/2 /2
x=11
For these questions, give your answers to 1 decimal place.
a) Change 5 out of 19 to a percentage
b) Change 72 out of 123 to a percentage
Answer:
a) 26.3% b) 58.5%
Step-by-step explanation:
(5/19) * 100 = 26.3
(72/123) * 100 = 58.5
Matthew has n nickels and d dimes. He has a minimum of $1 worth of coins
altogether. Write this situation as an inequality.
Answer: [tex]5n + 10d \ge 100[/tex]
===============================================
Explanation:
5n represents the value of all the nickels, where n is the number of nickels. Let's say he had 8 nickels. This would mean 5n = 5*8 = 40 cents is from just the nickels.
The 10d represents the value of all the dimes. For example, if he had d = 2 dimes, then he has 20 cents from those dimes because 10d = 10*2 = 20.
Combining the two expressions leads to 5n+10d as the total value of both types of coins. This total value is in cents. We want this value to be 100 cents or more. This is why we set 5n+10d to be greater than or equal to 100. That's how we arrive to [tex]5n+10d \ge 100[/tex]
Optionally we can divide each term by 5 to get [tex]n + 2d \ge 20[/tex] ,but I'll put the other inequality as the answer because it seems more descriptive in my opinion. Keeping 5n shows each nickel is 5 cents, and 10d shows each dime is 10 cents. Something like n+2d loses a bit of its descriptive nature.
The inequality for the given situation is 5n+10d≥100.
Given that, Matthew has n nickels and d dimes. He has a minimum of $1 worth of coins altogether.
What are inequalities?Inequalities are the mathematical expressions in which both sides are not equal. In inequality, unlike in equations, we compare two values. The equal sign in between is replaced by less than (or less than or equal to), greater than (or greater than or equal to), or not equal to sign.
We know that,
A nickel is worth 5 cents. A dime is worth 10 cents. A dollar is worth 100 cents.
Now, the inequality 5n+10d≥100
Therefore, the inequality for the given situation is 5n+10d≥100.
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The side length of a square is 8 cm. what is the area? What is the perimeter?
Answer:
Area = 64 cm² ; Perimeter = 32 cm
Step-by-step explanation:
Since we know that the side lengths of a square are all equal, this means that all 4 square lengths are 8 cm. Knowing that, we could simply square one of the side lengths to find the area:
8² = 64 cm²
To find the perimeter, just add all the side lengths. There are four sides to a square so we can just multiply the side length by 4:
8 · 4 = 32 cm
evaluate
7n-(m+18)
if n = 4; m=10 how do you solve ?
Answer:
7(4) - (10+18)
28 - 28
0
Step-by-step explanation:
Step-by-step explanation:
okay, 7 (n) if n = 4 that means 7 times 4 so that equals 28 BUT we do (m + 18) first so if m= 10 that means (10 + 18) would be 28, so
28 - 28= 0
what is the slope of the line with the following equation? (y-3)= -4(x-5)
Answer:
slope = - 4
Step-by-step explanation:
The equation of a line in point- slope form is
y - b = m(x - a)
where m is the slope and (a, b) a point on the line
y - 3 = - 4(x - 5) ← is in point- slope form
with slope m = - 4
Answer:
-4
Step-by-step explanation:
First express it in the form of y=mx+b where m is the slope and b is the y-intercept
y-3=-4x+20
y=-4x+20+3
y=-4x+23 then m=-4 which is the slope
^
6 m
8 m
What is the length of the hypotenuse?
C =
meters
Answer:
formula: a squared + b squared= c squared
6 squared+ 8 squared= c squared
36+64= c squared
100= c squared
Square root both sides
You get 10= c
Please help me I need the work
Sheila can ride her bicycle 6,000 meters in 15 minutes. How far can she ride her bicycle in 3 minutes? please help im retarted
Answer:
The answer is 1,200 meters
Step-by-step explanation:
So what I did was find the rate so we want to know how much Sheila can do in just 1 minute first so you would have to do 6,000/ 15 which gives you 400 so he does 400 meters in just 1 minute. So then you would have to multiply 400 by 3 which gives you 1,200, making that your answer.
hope that helped!
Answer: 800 meters
Step-by-step explanation:
We first find the speed of Sheila by the speed equation, which is:
v =d/t
d is the total distance traveled
t is the total time taken
And so, we get:
v = 6000m/ 15min
= 400m/min
Now, we find the distance traveled in 2 minutes by solving for distance in the speed equation, which becomes:
d=v⋅t
Inputting our values, we get:
400m/min ⋅ 2min=800
The probability of choosing a green grape out of the bag that contains red and green grapes without looking is StartFraction 11 over 15 EndFraction. Which term best describes this probability?
impossible
unlikely
likely
certain
Answer:
likley
Step-by-step explanation: edge 2021 on the quiz for me its question 6
Answer:
C. likely
Step-by-step explanation:
It is likely because if the bag holds red and green grapes then its not impossible to get a green grape because there are green grapes in the bag. It is not unlikly because there are 11/15 green grapes there, so there are more green grapes than red. But its still not certain that you will get a green grape, remember there are still quite a few red grapes too! So you would likely get a green grape.
I hope this helps!
Find the length of the segment AB
Answer: 3
Step-by-step explanation:
[tex] - 2(3x - 5) = 4(x + 3) + 8[/tex]
can you solve this step by step?
Answer:
-6x+10=4x+12+8
-6x10= 4x+20
-6x=4x+10
-10x=10
x=-1
Order the steps and justifications in solving the system of linear equations.
Equation 1: -2x+y=7
Equation 2:2x+y=-9
I have a few minutes
Answer:
eqaution 1: Proportinal
eqaution 2:Proportinal
Step-by-step explanation:
12x-19=9x+5 solve for x
Answer:
Step-by-step explanation:
Here you go mate
Step 1
12x-19=9x+5 Equation/Question
Step 2
12x-19=9x+5 Simplify
12x-19=9x+5
Step 3
12x-19=9x+5 Subtract 9x
3x-19=5
Step 4
3x-19=5 add 19
3x=24
Step 5
3x=24 Divide by 3
answer
x=8
Hope this helps
Plsssss help.
A,B,C and D lie on a circle, center O, radius 8cm. AB and CD are tangents to a circle, center O, radius 4cm.
ABCD is a rectangle. a) calculate the distance AE
b) calculate the shaded area
Answer:
a) [tex]AE=4\sqrt{3}[/tex]
b) [tex]A_s=16(4\sqrt{3}-\pi)\ cm^2[/tex]
Step-by-step explanation:
Lines in a Circle
(a)
Points AEO form a right triangle, which hypotenuse is the radius of the larger circle (8 cm) and one of its legs is the radius of the smaller circle (4 cm).
Thus, the distance AE is calculated by using the Pythagora's Theorem:
[tex]AE^2=8^2-4^2[/tex]
[tex]AE^2=64-16=48[/tex]
[tex]AE=\sqrt{48}[/tex]
Since 48=16*3:
[tex]AE=\sqrt{16}\sqrt{3}[/tex]
[tex]\boxed{AE=4\sqrt{3}}[/tex]
(b)
The shaded area is the area of the rectangle ABCD minus the area of the smaller circle:
[tex]A_s=A_r-A_c[/tex]
The rectangle has a length of twice AE:
[tex]L=8\sqrt{3}\ cm[/tex]
And a width equal to the diameter of the smaller circle:
[tex]W=8\ cm[/tex]
The area of the rectangle is:
[tex]A_r=8\sqrt{3}\ cm*8\ cm[/tex]
[tex]A_r=64\sqrt{3}\ cm^2[/tex]
The area of the smaller circle is:
[tex]A_c=\pi\ r^2[/tex]
[tex]A_c=\pi\ 4^2\ cm^2[/tex]
[tex]A_c=16\pi\ cm^2[/tex]
Thus, the shaded area is:
[tex]A_s=(64\sqrt{3}-16\pi)\ cm^2[/tex]
Factoring:
[tex]\boxed{A_s=16(4\sqrt{3}-\pi)\ cm^2}[/tex]
a. the length of AE is: 6.9 cm
b. the shaded area is: 60.13 sq. cm.
Recall:
Area of rectangle = length × widthArea of circle = πr²a. Find AE:
Considering right triangle AOE, apply the Pythagorean Theorem to find AE, given that,
EO = 4 cm
AO = 8 cm
Thus:
AE = √(AO² - EO²)
AE = √(8² - 4²)
AE = 6.9 cm
b. Shaded Area = Area of rectangle - area of circle
Area of rectangle = length × width = 2(6.9) × 2(4) = 110.4 sq. cm
Area of circle = π(4)² = 50.27 sq. cm
Shaded Area = 110.4 - 50.27 = 60.13 sq. cm.
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PLZZZ helppppppppppppp
Answer:
"Y" will be at ( 7 , 8 )
Step-by-step explanation:
"R" is moved up 4, to the right 1.
Doing this to "Y" leads to the answer.
Answer:I’m not able to see your Image
Step-by-step explanation:
I WILL GIVE BRAINLIEST..... The perimeter of a triangle is 22cm. if one of the sides is 9cm, find the other sides if the area of the triangle is 20.976cm2
Help please
Evaluate -9 - (-4)
Answer:
The answer should be -5.
Step-by-step explanation:
Remember that if there are two negative signs next to each other then it will turn into a positive sign, in which you get the equation -9 + 4. Your answer should be -5 when you add 4 from -9.
Numbers such as 1,2,3,... are also called the ?
numbers.
Answer:
Whole
Step-by-step explanation:
1,2,3 are all whole numbers
Roger had $1200. He bought a phone with 0.4 of the money and a helmet with 0.5 of the remaining money. What is the amount of money Roger had left?
Answer:
the remaining money is $1189.22
Step-by-step explanation:
pls help me 20 points
Answer:
I think it's B
Step-by-step explanation:
I hope you get it right
The video rental kiosk rented out 130 videos on Monday, 124 on Tuesday, 80 on Wednesday, and 74 on Thursday. If the kiosk has the same number of rentals over the next four days, how many total videos will have been rented?
Answer:
816 videos
Step-by-step explanation:
The computation of the total videos rented is as follows:
= Monday + tuesday + wednesday + thursday + friday + saturday + sunday + monday
= 130 + 124 + 80 + 74 + 130 + 124 + 80 + 74
= 816 videos
Here we assume that the question asked for total number of days i.e. 8 days
So according to that we calculate it
The rectangle shown has a perimeter of 54 cm and the given area. Its length is 3 more than 3 times its width. Write and solve a system of equations to find the dimensions of the rectangle.
The length of the rectangle is what cm ?
the width of the rectangle is
what cm.?
Answer:
Step-by-step explanation:
the perimeter P=2(L+W)=54
P=2L+2W=54 OR L+W=27
we know that L=3W+3
P=3W+W=27-3
4W=24
W=6 CM
L=21CM
Apply the distributive property to factor out the greatest common factor.
55+35
Answer:
Step-by-step explanation:
We have,
55 + 35
To find, the distributive property to factor out the greatest common factor,
55 + 35 = ?
We know that,
The distributive property of multiplycation,
The factors of 55 = 1, 5, 11 and 55 and
The factors of 35 = 1, 5, 7 and 35
The greatest common factor of 55 and 35 = 5
Using distributive property of multiplycation,
The greatest common factor = 5
Hence, the greatest common factor of 55 and 35 is .
A man keeps birds in a big cage in his garden.
2
of the birds are brown.
5
4 of the birds are black.
The rest of the birds are white.
The man takes a bird out of the cage at random.
The probability that this bird is black is 0.2.
How many of the birds in the cage are white?
