Answer:
176
Step-by-step explanation:
How many grams are 7.00 x 1022 molecules of NaOH?
Answer:
46.5
explanation
6.022*10^23 molecules=40g.
7.00*10^23=40*7.00*10^23/6.022*10^23 g =46.5 g
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 4.65g are 7.00 x 10²² molecules of NaOH.
What is mole?The mole is used to measure the quantity of amount of substance. It measure the number of elementary entities of a given substance that are present in a given sample.
we know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number
mole =given number of atoms ÷ 6.022×10²³(Avogadro number)
given number of atoms of NaOH= 7.00 x 10²² atoms
Substituting the values
mole=7.00 x 10²²÷ 6.022×10²³
mole =0.116 moles of NaOH
mass of NaOH= Molar mass of NaOH× moles of NaOH
= 40 × 0.116
= 4.65g
Therefore, 4.65g are 7.00 x 10²² molecules of NaOH.
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Please help me. I am pretty confused on this
Answer:
C
Step-by-step explanation:
16's square root is 4
Which shapes make up this composite figure?
A cylinder and 2 half spheres.
a cylinder and a cone
a cylinder and two cones
a half sphere, a cylinder, and a cone
a sphere and a cylinder
Answer:
A cylinder and 2 half spheres
Step-by-step explanation:
Using my eyes, I see 1 cylinder and 2 half spheres at the ends of the cylinder.
The shapes that combined to form the comppsite figure are a Cylinder and two half Sphere.
Option A) A cylinder and 2 half spheres is the correct answer.
What is a cylinder and a hemisphere?A cylinder is simply a 3-dimensional shape having two parallel circular bases joined by a curved surface.
A hemisphere is gotten when a sphere is cut into two equal halves. It is half of a shere.
From the Image, one can see that a cylinder and two hemispheres combined to form the composite figure.
Hence, the shapes that combined to form the comppsite figure are a Cylinder and two half Sphere.
Option A) A cylinder and 2 half spheres is the correct answer.
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can you guys help me with this i am down to my last nerve
Answer:
(-1, 1)
Step-by-step explanation:
um i kinda feel like i got it wrong buuuuuuut yea
y=x²+2x+2
First, we should try to change the last number in a way so we can factor the entire thing
y=x² + 2 x + 1
tooo make it look like y=(x + 1 )²
the only difference between the original y=x² + 2x + 2
and the factor-able y=x² + 2x + 1 is simply changing the
2 to a 1 (Since we can't randomly change the 2 to a 1, we can add 1 and subtract a 1 to the equation at the same time to keep it balanced.)
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find the 12th term of the geometric sequence 5,20,80
Answer:
20971520
Step-by-step explanation:
Thank me later
In OPQ, O = 10 cm, p=67 cm and angle Q=24^ . Find angle P , to the nearest degree.
152Answer:
Step-by-step explanation:
A swim instructor would like to test the effect of a new swim technique versus the standard technique for a group of 25 competitive swimmers.
The swim instructor divides the students by class (junior or senior), and then randomly allocates half of the 14 juniors and 5 of the 11 seniors to receive instruction on the new technique.
During swim practice, the instructor times the juniors as they race against each other to see if those who learned the new technique outperform their peers. The instructor does the same for the seniors.
At the end of practice, the instructor compares the average swim time for both juniors and seniors among those who did and did not use the new technique.
A) The instructor should place the 25 student names on slips of paper and place them in a hat. Twelve of the slips should be drawn out and those students should receive the instruction on the new technique.
B) The instructor should place the names of the 14 juniors on slips of paper and place them in one hat. The 11 seniors’ names should be placed on slips of paper and placed into a separate hat. The instructor should randomly select 7 juniors and 5 seniors to receive instruction on the new technique.
C) For each student, the instructor should flip a coin. If the coin lands on heads, the student will receive instruction on the new technique. If the coin lands on tails, the student will not receive instruction on the new technique.
D) The students should line up alphabetically and count off by 2s. Every student who gets a 1 will receive instruction on the new technique. Every student who gets a 2 will not receive instruction on the new technique.
Answer:
B on Edge 2021.
Step-by-step explanation:
BBBBBB
Answer:randomized block experimental design
Step-by-step explanation:
CORRECT ON EDGE 2022
A factory made 100 jars of peanut butter. 70% of the jars contained creamy peanut
butter. How many jars of creamy peanut butter did the factory make?
Answer:
70
Step-by-step explanation:
Answer:
70 jars of peanut butter.
Step-by-step explanation:
70% = 70 ÷ 100
= 0.7
Total jars of peanut butter = 100
—> 0.7 × 100 = 70
(a) An angle measures 30°. What is the measure of its supplement?
(b) An angle measures 26°. What is the measure of its complement?
Answer:
32 and 58.
Step-by-step explanation:
complementary angles add up to 90.
26+x=y
x+y=90
plug y=26+x into the above equation
x+26+x=90
2x=64
x=32
The angles are 32 and 58.
Pls help !!!!!!!!!!!!
Answer:
x = 100°
Step-by-step explanation:
15° + 65° + x = 180°
80° + x = 180°
x = 100°
The length of a picture frame is 6 inches more than the width. For what values of x is the perimeter of the picture frame greater than 152 inches?
Answer:
35
Step-by-step explanation:
35 is exactly 152 but since its asking for greater then you're right it is 36.
But since it says '>' it means not equal to so it would be:
x > 35
or
x ≥ 36
what is the exact value of tan(195)
Answer:
Im pretty sure its 11.43
Step-by-step explanation:
Answer:
QUESTION:
what is the exact value of tan(195)
ANSWER:
Find the exact value using trigonometric identities.
Exact Form:
2 - [tex]\sqrt{ 3[/tex]
Decimal Form:
0.26794919
Step-by-step explanation:
Hope that this helps you out! :)
If you have any questions please put them in the comment section below this answer.
Have a great rest of your day/night!
Please thank me on my profile if this answer has helped you.
Joanne has a rectangular kitchen that is 10 ft by 15 ft. She decides to increase the length and the width by the same amount (x) in order to have a new kitchen whose area is double the area of the original kitchen. How much should the length and the width increased by?
Answer:
NO
Step-by-step explanation:
The volume of a cylinder is 980 in cubed.
The height of the cylinder is 20 in. What is the radius of the cylinder?
Express your answer to the nearest hundredth.
9514 1404 393
Answer:
3.95 in
Step-by-step explanation:
The volume is given by ...
V = πr²h
Solving for radius, we get ...
r = √(V/(πh))
For the given numbers, the radius is ...
r = √(980 in³/(π·20 in)) = 7/√π in ≈ 3.95 in
The radius of the cylinder is about 3.95 inches.
If the probability that it will rain
tomorrow is 3/8, what is the
probability that it will not rain?
Answer:
5/8
Explanation: 8/8 - 3/8 = 5/8
Answer:
0.625
Step-by-step explanation:
1-3/8 total probability is 1 thus you take the probability that it will rain from 1 and get the answer
What is the best estimate for the quotient of the problem below? Round your answer to the nearest whole number
Answer:13
Step-by-step explanation: turn 6 1/4 into an improper fraction. Then, proceed to do the reciprocal of 1/2 which is 2/1 since this is division. You should get 12.5 and round from there to 13.
Write the equation of the line that passes throught the points (-1, 6) and (5, -4).
Answer:
y = -5/3x + 13/3
Step-by-step explanation:
(-1, 6) and (5, -4).
First you want to find the slope of the line that passes through these points. To find the slope of the line, we use the slope formula: (y₂ - y₁) / (x₂ - x₁)
Plug in these values:
(-4 - 6) / (5 - (-1))
Simplify the parentheses.
= (-10) / (5 + 1)
= (-10) / (6)
Simplify the fraction.
-10/6
= -5/3
This is your slope. Plug this value into the standard slope-intercept equation of y = mx + b.
y = -5/3x + b
To find b, we want to plug in a value that we know is on this line: in this case, I will use the second point (5, -4). Plug in the x and y values into the x and y of the standard equation.
-4 = -5/3(5) + b
To find b, multiply the slope and the input of x(5).
-4 = -25/3 + b
Now, add 25/3 to both sides to isolate b.
-4 ⇒ -12/3
-12/3 + 25/3 = 13/3
13/3 = b
Plug this into your standard equation.
y = -5/3x + 13/3
This is your equation.
Check this by plugging in the other point you have not checked yet (-1, 6).
y = -5/3x + 13/3
6 = -5/3(-1) + 13/3
6 = 5/3 + 13/3
6 = 18/3
6 = 6
Your equation is correct.
Hope this helps!
A store sells watches for $69.99 each and watch batteries for $9.50 each. Justin is buying 2 watches and x number of watch batteries. Which equation can be used to find y, the total price Justin must pay in dollars?
A y = 139.98x + 9.50x
B y = 69.99x + 9.50
C y = 9.50x + 69.99
D y = 9.50x + 139.98
Answer:
D. y= 9.50x + 139.98
Step-by-step explanation:
69.99 x 2 = 139,98
What is the approximate value of
3
√
35
?
Answer:
17.7
Step-by-step explanation:
Use a calculator. Enter 3 and then √35. The calculator should return
17.748. Round this off to 17.7.
Answer:
17. 7 is the answer.
Step-by-step explanation:
#CarryOnLearningHell I’ll mark brainlest!
Answer:
Read answer below :)
Step-by-step explanation:
So you know that the height is 12 cm, and the base is 27 cm at full. When they show you half, that's 13.5. So, having three sides in the entire base-length of 27 cms, you'll divide 27 by 3, in which case you get 9. Each the the base lengths are 9.
So the formula for volume is length * width * height. Knowing the width (13.5), the length (9), and height (12), multiply them. Your final answer is 1458 for all of it. For one side, divide by 6.
Hope this helps
PLS HELP PLS PLS PLS For #1-2, determine if the sequence is arithmetic or geometric. Then find its common difference or ratio.
1.
[tex]\frac{1}{2}[/tex], 1, 2, 4…
2. -5, 1, 7, 13 …
Answer:
#1 is Geometric
its common ratio is 2
#2 is Arithmetic
its common difference is 6
Select the correct answer.
Consider the first four terms of the sequence below.
-3, -12, -48, -192, . . .
What is the 8th term of this sequence?
A.
-196,608
B.
-49,152
C.
-12,288
D.
-768
Answer:
D
Step-by-step explanation:
The value of 8th term of this sequence is,
⇒ a (8) = - 49,152
What is Geometric sequence?An sequence has the ratio of every two successive terms is a constant, is called a Geometric sequence.
Given that;
Consider the first four terms of the sequence are,
⇒ -3, -12, -48, -192, . . .
Here, Common ratio is,
⇒ - 12 / - 3
⇒ 4
Thus, The sequence are in Geometric sequence.
Hence, The value of 8th term of this sequence is,
⇒ a (8) = - 3 × (4)⁸⁻¹
⇒ a (8) = - 3 × 4⁷
⇒ a (8) = - 3 × 16,384
⇒ a (8) = - 49,152
Thus, The value of 8th term of this sequence is,
⇒ a (8) = - 49,152
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Plz answer for goodluck
Answer:
It says that most of the data is greater than the mean
Step-by-step explanation:
Answer:
A large mad means many of the points deviate far from the average
Step-by-step explanation:
Solve the equation using the distributive property and properties of equality. 2 (x minus 8) = 68 What is the value of x?
Answer:
x=42
Step-by-step explanation:
2(x-8)=68
Distribute the 2
2x-16=68
Use the addition property of equality (add 16 to both sides)
2x=68+16
2x=84
Use the division property of equality (divide both sides by 2)
x=84/2
x=42
What is the Mean, Median, Mode, and Range for number 4
Please help
Answer:
Mean: 63. Median: 69. Mode: 41. Range: 51.
Step-by-step explanation:
The "mean" is the "average" you're used to, where you add up all the numbers and then divide by the number of numbers. The "median" is the "middle" value in the list of numbers. To find the median, your numbers have to be listed in numerical order from smallest to largest, so you may have to rewrite your list before you can find the median. The "mode" is the value that occurs most often. If no number in the list is repeated, then there is no mode for the list. The "range" of a list a numbers is just the difference between the largest and smallest values.
Hope this helps!
A circle is centered at the point (-7,-1) and passes through the point (8, 7). The radius of the circle is ___ units. The point (-15, __ ) lies on this circle
Answer:
(x + 7)2 + (y + 1)2 = r2.
To get we use point (8, 7): (8 + 7)2 + (7 + 1)2 = r2, r2 = 225 + 64 = 289 = 172.
So, equation of circle: (x + 7)2 + (y + 1)2 = 289
Step-by-step explanation:
what two numbers multiply to 10 and add up to 11
Answer:
1 and 10
Step-by-step explanation:
Answer:
1 and 10
Step-by-step explanation:
1×10=10
1+10=11
7x+3y=11
3x-y=23
Solve by substitution
Between which two points is 95 located on the number line below?
Answer: A
Step-by-step explanation: The square root of 9 is 9.7 so it would be between 5 and 10
Answer:
A. W and X
Step-by-step explanation:
√95
9.74679434481
This number is close to 10.
5 and 15 are on the sides of 10.
X(10) is between W(5) and Y(15).
I'LL GIVE BRAINLIEST PLS ANSWER THIS!! QUICK PLEASEEE
Answer:
your answer is 40 percent
Step-by-step explanation:
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