Answer:
h230 8.0 mol =h2330
Step-by-step explanation:
Answer:
9
Step-by-step explanation:
2(H2) + 02 -> 2(H2O) this is a correct balanced equation
now to solve for grams of H20 with 8 grams of O2 you must turn 8 grams O2 into moles then use the coefficients of the O2 and the H2O, then turn moles of H2O into grams of H20.
8 grams O2 x 1 mol O2 / 32 grams O2 (molar mass)
2 mol H20 (coefficients) / 1 mol O2 (coefficients)
18.02 grams H2O (molar mass) / 1 mol H20
this is 9 grams H20
If you need more help, don't hesitate to ask!
May I have brainliest please?
Rewrite the equation by completing the square. 4x^2-4x+1=0
Answer:
(x+(-x))²=0
Step-by-step explanation:
4 - a
-4 - b
1 - c
D = b²-4ac
D = (-4)² - 4×4×1
D = 16-16=0 => only one root
x= -b/2a
x= 4/2×4
x= 4/8 = 1/2 = 0.5
A membership at Gisele’s Gym costs $145 to join and $3 for each visit.
A membership at Freddie’s Fitness costs $75 to join and $5 for each visit.
For which number of visits would both locations have the same total cost?
Name the two congruent triangles
The distribution of tips given by customers who buy only a cup of coffee is bimodal with a mean of $0.29 and a standard deviation of $0.116. The distribution of tips given by customers who buy only a salad is approximately Normally distributed with a mean of $2.89 and a standard deviation of $1.18. If a random sample of 35 tips from customers who buy only a cup of coffee is selected and a random sample of 20 customers who buy only a salad is selected, what is the probability of a sample mean being at least $2.50 more for customers who buy only a salad than for those who buy only a cup of coffee?
Answer:
0.6781
Step-by-step explanation:
Answer:
edge 2021-22
Step-by-step explanation:
Mrs. Gregory, the golf course superintendent at a country club, plans to reseed the putting green of the first hole. The circular putting green has a diameter of 38 ft.
What is the area of the putting green?
Use π=3.14. Round to the nearest tenth
Answer:
The area of the putting green is 1133.5 square feet.
Step-by-step explanation:
Area of a circle:
The area of a circle is given by:
[tex]A = \pi r^2[/tex]
In which r is the radius, which is half the diameter.
The circular putting green has a diameter of 38 ft.
This means that [tex]r = \frac{38}{2} = 19[/tex]
What is the area of the putting green?
[tex]A = \pi r^2 = 3.14 * 19^2 = 1133.5[/tex]
The area of the putting green is 1133.5 square feet.
Answer:
1133.5 is the answer.
Step-by-step explanation:
Hope its right
It worked for me
Chris owns a bike rental shop.he rents bikes for $15 an hour. on Friday,he has rented bikes for a total of 52 hours. how much did he make?
Answer:
780
Step-by-step explanation:
15*52=780
Find the measure of the supplement of a
16° angle.
Answer:
164
Step-by-step explanation:
Hey There!
If they are supplementary angles then they will add up to equal 180
So given one of the angles (16) we subtract that from 180 to find the value of the missing angle
180-16=164
Your answer is 164
Hope this helps :)
HELP ASAP PLS!!
what is composite area?? How do we use it in the real world???
Answer:
A composite figure (or shape) is one that can be separated into more than one of the basic figures. Examples of using it in the real world is building cars or houses.
Evaluate −6 − (−1). (1 point)
Select one:
a. −7
b. 5
c. −5
d. 6
help me answer this question please
Answer: 23
Step-by-step explanation:
subtract and write the difference in simplest form 12 5/8 - 7 1/3
Answer:
5 7/24
Step-by-step explanation:
Given the following mathematical expression;
12 5/8 - 7 1/3
First of all, we would subtract the whole numbers;
12 5/8 - 7 1/3 = (12 - 7) 5/8 - 1/3
12 5/8 - 7 1/3 = 5 [5/8 - 1/3]
Next, we subtract the fractions from each other;
5/8 - 1/3
Lowest common multiple (lcm) = 24
5/8 - 1/3 = (15 - 8)/24
5/8 - 1/3 = 7/24
Combining the two parts, we have;
12 5/8 - 7 1/3 = 5 7/24
The sum of three consecutive even numbers is 150. What is the smallest of the three numbers ?
If the sum of 3 numbers is 150, then their average is 50. Then if they are consecutive even numbers, then they are 48, 50 and 52. The smallest 48.
Answer:
the smallest of the three numbers is 48
48+50+52 =150
Step-by-step explanation:
smaller number = x
next even number = x+2
next even number = x+4
x+x+2 + x+4 =150
3x+6= 150
3x=144
x= 48
48+2 = 50
48+4 = 52
48+50+52 = 150
Someone please help:)
Answer:
2. Addition property of inequality. You're adding 6x to both sides.
3. 4x = 28
4. 4x/4 = 28/4 Justification: Division property of inequality
You're dividing both sides by 4.
5. x = 7
Hope that helps.
HELP ME PLS!!! This is important
Answer:
2
Step-by-step explanation:
if you see in 1996 the cost was 1.00 and in 2000 it was 3.00 so 3 - 1 = 2
Answer $2.00
1996 had 1 dollar and 2000 has 3 dollars
Find x for the side given
Answer:
3) 5
Step-by-step explanation:
Sine = [tex]\frac{opposite}{hyphotenuse}[/tex]
Sine 30 = [tex]\frac{x}{10}[/tex]
sine of 30 is 0.5
0.5 = [tex]\frac{x}{10}[/tex]
multiply 10 on both sides
0.5 x 10 = [tex]\frac{x}{10}[/tex] x 10
5 = x
sound travels about 750 miles per hour. If you stand in a canyon and sound a horn, you will hear and echo. Suppose it takes about 3 seconds to hear the echo. How far away is the canyon wall, in feet?
Answer:
The answer is 1650 feet.
Step-by-step explanation:
This is because the sound's speed, in feet/second is:
(750 mi/hour)*(1 hour/3600 seconds)*(5280 feet/mile) = 1100 ft/sec
In 3 seconds, the sound will have traveled 3300 feet. Since the sound's movement is a round trip, the canyon wall is 3300/2 = 1650 feet
This is the pic to the question :)
convert this improper fraction into mixed number 10/3
Answer:
3 1/3
Step-by-step explanation:
10 points
Write an equation of the line in slope-intercept form -5,1) 0,-3) A) y=-4/5x-3 B) y=-4/5x+3 C) y=-5/4x-3 D) y=-5/4xt3
Answer:
A
Step-by-step explanation:
slope rise/run= -4/ 5
plugging it in we get
y= -4/5x+b
-3=-4/5x+b
-3= -4/5(0) +b
-3=0+b
b=-3
so we get y= -4/5x-3
or A
if my answer helps please mark as brainliest.
1,2,3 or 4
Thank you!
Answer:
Option 3
Step-by-step explanation:
for the water balloon fight your mom filled up 100 balloons with 5 gallons of water how many ounces of water did she use make sure to label your ounces 
Answer:
Step-by-step explanation: I don’t know
Match the equation to the answer.
URGENT WILL GIVE BRAINLIEST
Write 10^6 in Exponential form
Answer:
This is exponential form. You are raising 10 to the degree of 6. 10^6 is 1000000.
Step-by-step explanation:
Answer:
10 × 10 × 10 × 10 × 10 × 10
Step-by-step explanation:
Another way you can say it is "10 to the sixth power"
You are the manager of a restaurant that delivers pizza to college dormitory rooms. You have just changed your delivery process in an effort to reduce the mean time between the order and completion of delivery from the current 21 minutes. A sample of 36 orders using the new delivery process yields a sample mean of 22.4 minutes and a sample standard deviation of 6 minutes.
A.) Please compute the test statistic. Please round to four decimal places.
B.) Please determine the p-value. Please round to four decimal places.
C.) Using a 0.05 level of significance, please provide the critical value for the appropriate test. Please round to four decimal places.
D.) Using a 0.05 level of significance, is there evidence that the population mean delivery time has been reduced below the previous population mean value of 25 minutes?
Answer:
1.4000 ;
0.0807 ;
1.69 ;
Fail to reject the Null
Step-by-step explanation:
Given :
μ = 21 minutes
x = 22.4 minutes
Sample size, n = 36
Standard deviation, s = 6
H0: μ ≥ 21
H1: μ < 21
Test statistic : (x - μ) ÷ s/sqrt(n)
Test statistic : (22.4 - 21) ÷ 6/sqrt(36)
Test statistic : 1.4 ÷ 1
Test statistic = 1.4000
Pvalue : Using the Test statistic value at α = 0.05 ; One - tail test = 0.0807
The t critical value using a critical value calculator ; DF = (n - 1) = 36 - 1 = 35 ; α = 0.05 = 1.69
Decision region :
Reject H0 if
|Test statistic| > |critical value|
1.4 < 1.69
Hence, we fail to reject H0
There isn't enough evidence they delivery time has been reduced below previous mean
Due NOW!!! Please help!
Answer:
At x = 7 and x= 1
Step-by-step explanation:
Set each equation equal to 0 and solve.
x - 7 = 0
x = 7
x-1 =0
x = 1
PLEASE HELP!!!!!!!!!!! A clown has two performances today, in cities A and B, which are 240 km apart. The clown drives from City A to City B at a certain speed and performs. On his way back to City A, he drives half the distance at the same speed as before, but then increases his speed by 10 km/h to be on time for his performance in City A. Thus, the drive from B to A takes 2/5 of an hour less than the drive from A to B. At what speed does the clown drive from A to B?
Answer: 50 km/hr
240 = rt
120 = rt1
120 = (r+10)t2
t1 + t2 = t - 2/5 ==> t2 = 1/2 t - 2/5
So you get
240 = rt
120 = (r + 10)(1/2 t - 2/5)
Solve the system
You het 50 km/hr
How do you divide 336 by 6 by long dvision step by step?
Answer:
56 is your answer
Step-by-step explanation:
336/6=(56×3)/3=56
The picture shows two boxes a teacher stacks in the storage closet.
What is the total volume of the two boxes?
Answer: I donut know
Step-by-step explanation:
Factor 24j-16 to identify the equivalent expressions. Its multiple choice. A=8(3j−2) B=6(4j−2j) C=4(6j−4) D2(12−8)
Answer:
I would say either A or C
Step-by-step explanation:
because when you distribute both they both come out to be 24j - 16
I need help ASAP will mark the brainliest
Answer:
addition property
Step-by-step explanation: