Answer:
erylium Be Z=4, A=10 ... Oxygen O Z=8, A=16 ... Vanadium Va Z=23, A=51 Rubidium Rb Z=37, A=85.5. Strontium Sr Z=38, A=88. Yttrium Y Z=39, A=89
Step-by-step explanation:
?
Which expression represents three minus the quotient of five divided by x?
Answer:
The correct answer is B.
Now write 12% as a fraction in simplest
Answer:
12/100
Step-by-step explanation:
Percent is basically per 100 so 12/100
Simplest is 3/25
Find the composition (fog)(-2) for the functions f(x) = 2x + 1 and g(x) = x- 3.
Show work
Step-by-step explanation:
(f o g)(x)
= f(x - 3)
= 2(x - 3) + 1 = 2x - 5.
Hence (f o g)(-2) = 2(-2) - 5 = -4 - 5 = -9.
56 is what percent of 72
Integer fraction or mixed number
Answer:
The resulting percentage is seventy seven and seven ninths, or approximately 77.78%
Step-by-step explanation:
You can solve this by dividing 56 by 72 and multiplying by 100:
56 / 72 × 100
= 7 / 9 × 100
≅ 0.7778 × 100
≅77.78%
Samantha is trying to decide between two brands of crackers. Brand A: $1.12 for 8 ounces Brand B: $1.56 for 12 ounces. What is the difference between the unit rates (cost per ounce) between these the two brands?
Answer:
b
Step-by-step explanation:
Answer:
The difference is 1 cent
Step-by-step explanation:
1.12/8 is 0.14
1.56/12 is 0.13
subtract and you get 1
HELP ME PLZ WITH THIS PROBLEM
Answer:
its to blurry
Step-by-step explanation:
Choose all that apply. An individual’s financial irresponsibility may affect _____. them people they know people they don’t know the community the global community
Answer:
an individual's financial irresponsibility may affect them
Answer:
An individual’s financial irresponsibility may affect the community
Step-by-step explanation:
Mr. Hammond is the volunteer coordinator for a company that puts on running races. Last year, the company organized 7 short races and 8 long races, which required a total of 804 volunteers. This year, the company organized 11 short races and 5 long races, which required 688 volunteers in total. How many volunteers does each type of race require?
Answer:
28 short race volunteers
76 long race volunteers
Step-by-step explanation:
Let :
Short races = a
Long races = b
LAST YEAR:
7a + 8b = 804 - - - - (1)
THIS YEAR:
11a + 5b = 688 - - - (2)
Multiply (1) by 5 and (2) by 8
35a + 40b = 4020
88a + 40b = 5504
Subtract
-53a = - 1484
a = 1484 / 53
a = 28
Put a = 28 in equation (1)
7(28) + 8b = 804
196 + 8b = 804
8b = 804 - 196
8b = 608
b = 76
28 short race volunteers
76 long race volunteers
what is 1 whole 1/5 - 1/3
The District Commissioner levies a fine of 200 bags of cowries for the crime, yet the messengers collect 250 bags from the villagers. Why
Answer:
Extra 50 bags were collected by the messengers.
Step-by-step explanation:
a) Number of bags of cowries levied as fine by the District Commissioner = 200 bags
Number of bags of cowries collected by the messengers = 250 bags
The difference or extra bags collected above the authorized fine = 50 (250 - 200)
b) The extra 50 bags could be bribes collected by the messengers to settle their own selfish interests. They could also represent extras freely donated by the villagers for the messengers' trouble. In the colonial days, when literacy levels were very low among the indigenous peoples of Africa and white men were in charge of governance, it was established that the black "middlemen," called interpreters or messengers, greatly exploited their own people through inflated and wrongful interpretations of fines, contrary to what was levied by the District Commissioners (DCs).
I need the answers. Please hurry.
Answer:
A.She used the incorrect inverse operation.
Step-by-step explanation:
Hopefully it is help
help me please this is due today
Answer:
490
Step-by-step explanation:
19.6
25
980
3920
4900
then add the decimal
490.0
HELPPPPP IS IT MORE OR LESS ?
Answer:
i think more
Step-by-step explanation:
Simplify 7(3x+5)-11x
If you can help that would be greatly appreciated
Answer:
10x+35 please give brainliest
Step-by-step explanation:
21x+35-11x
10x+35
_____% of 300 plants is 195 plants
Answer:
65%
Step-by-step explanation:
16 decreased by a number is - 5
In a random sample of 60 computers, the mean repair cost was $150. Assume the population standard deviation is $36. Construct a 95% confidence interval for the population mean.
Answer:
The 95% confidence interval for the population mean is between $140.89 and $159.11
Step-by-step explanation:
We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:
[tex]\alpha = \frac{1-0.95}{2} = 0.025[/tex]
Now, we have to find z in the Ztable as such z has a pvalue of [tex]1-\alpha[/tex].
So it is z with a pvalue of [tex]1-0.025 = 0.975[/tex], so [tex]z = 1.96[/tex]
Now, find the margin of error M as such
[tex]M = z*\frac{\sigma}{\sqrt{n}}[/tex]
In which [tex]\sigma[/tex] is the standard deviation of the population and n is the size of the sample. So
[tex]M = 1.96\frac{36}{\sqrt{60}} = 9.11[/tex]
The lower end of the interval is the sample mean subtracted by M. So it is $150 - $9.11 = $140.89
The upper end of the interval is the sample mean added to M. So it is $150 + $9.11 = $159.11
The 95% confidence interval for the population mean is between $140.89 and $159.11
Simplify.
I need this answered ASAP pleaseee.
I believe the answer is 4.
Step-by-step explanation:
Hope this helps!
How do you round 272,062 to the nearest thousand?
Also, 866,390 to the nearest thousand
Answer:
first one is 127,000 second one is 866,000
Step-by-step explanation:
Answer:
272162that's how you round it because 6 is greater than 5 so u can round it up from 0 to 1
At 8:02 a jogger sets out .By 8:04 she has run 360 meters
Help me out with this question (geometry/angle bisectors)
32 athletes are going camping for the weekend. Three athletes can sleep in one tent. What is the minimum number of tents that will be needed?
Minimum number of tents are 11.
Here,
32 athletes are going camping for the weekend.
3 athletes can sleep in one tent.
We have to find the minimum number of tents.
What is Number system?
A system of writing to express number is called Number system.
Now,
Number of athletes = 32
Number of athletes in one tent = 3
Hence, Minimum number of tents = 32 ÷ 3
We get 11 tents for 32 athletes.
Therefore, Minimum number of tents are 11.
Learn more about the number system visit:
https://brainly.com/question/19460684
#SPJ2
The cost for Shania's groceries is $215. If the sales tax rate is 8%, how much will Shania pay for tax?
Answer:
The tax paid by shania is $17.2
Step-by-step explanation:
The computation of the tax paid by shania is as follows:
= Cost of the shania groceries × sales tax rate
= $215 × 8%
= $17.2
by multiplying the cost of the shania groceries with the sales tax rate we can measured the tax paid by shania
hence, the tax paid by shania is $17.2
A cable is attached to a radio tower 100 ft
above the ground and forms an angle of 50 ( degrees ) with the ground. To the nearest foot, how long is the cable?
Answer:
L = 131 feet
Step-by-step explanation:
Right Triangles
The cable, the ground, and the radio tower form a right triangle with an angle of 90° located where the ground and the tower meet.
The cable is the hypotenuse of the triangle and the angle of 50° is opposite to the height of the radio tower.
To find the hypotenuse L we use the sine ratio:
[tex]\displaystyle \sin\theta=\frac{\text{opposite leg}}{\text{hypotenuse}}[/tex]
[tex]\displaystyle \sin 50^\circ=\frac{100}{L}[/tex]
Solving for L:
[tex]\displaystyle L=\frac{100}{\sin 50^\circ}[/tex]
Calculating;
L = 131 feet
PLEASE HELP ILL GIVE BRAINLYEST IF U GET IT RIGHT
Answer:
I think its A
Step-by-step explanation:
I'm not 100% sure but I think its A
Answer:
it is 100 mm side length
Does anyone know how to do this, I’m failing math and I need this to boost my grade. Someone help please
Answer:
Step-by-step explanation:
Hey, I'm not sure if I am right, but I hope it can create a spark or something.
8. Find x
10x - 1 = 14x - 37 Combine like terms
+37 +37
10x + 36 = 14x Combine like terms
-10x -10x
36 = 4x Divide to isolate x
36 = 4x
4 4
9 = x
You can also do this method with the others.
PS: I am still not sure if this is the right method, lol. I just really want to help.
A jazz concert brought in $119000 on the sale of tickets. If the tickets sold for and each, how many of each type of ticket were sold
Answer:
6850 & 650
Step-by-step explanation:
The question is partly incomplete as it didn't state the cost of ticket sold. Also, it didn't state the total number of tickets sold. But, assuming that the tickets sold were $15 and $25 tickets, and the total number of tickets sold was 7500, then we say that
Let x = the number of $15 tickets sold
Let y = the number of $25 tickets sold
x + y = 7500 y = 7500 - x
15x + 25y = 119000
15x + 25(7500-x) = 119000
15x + 187500 - 25x = 119000
-10x = -68500
x = 68500 / 10
x = 6850 tickets at $15 each
Remember from the first calculation, we said x + y = 7500, then
y = 7500 - 6850
y = 650 tickets at $25 each
All you have to do is substitute the values I assumed for your given value. Thanks
Angle ABC is taken by a dilation with the center P and scale factor 3 to angle A'B'C'
The measure of angle ABC is 21 degrees. What is the measure of angle A'B'C'?
Answer: 21
Step-by-step explanation: We are given that angle ABC is dilated with center P.
Scale factor=3
Angle A'B'C' is formed after dilation of angle ABC.
Dilation: when a figure is dilated by scale factor a then, the figure shape does not change.
After dilation, the size of figure changes.
The initial figure and the figure obtained after dilation are similar in shape.
When two figures are similar then , the angles of one figure are congruent to its corresponding angles in other figure and ratio of their corresponding sides are equal.
The measure of angle ABC=21'
After dilation by scale factor 3 then, the measure of angle A'B'C' remains=21'
Because the shape does not change in dilation transformation.
Chau runs 10 miles in 58 minutes. How many minutes does he take per mile?
Answer:
Per mile Chau takes 5.8 minutes per mile.
Step-by-step explanation:
To find this answer you would have to do the amount of time divided by the amount of miles. Always remember when dividing time most of the time goes first unless the problem / instructions say differently. So, when you do 50 divided by 10 you will get 5.8. So, Chau takes 5.8 minutes per mile.
PLEASE ANSWER THIS QUESTION RIGHT Name the x-intercept(s)?
A:0 and 4,B:2,C:4,D:0.
Answer:
A. 0 and 4
Step-by-step explanation:
The x-intercepts are simply the values of x when y = 0. In other words it is the points where the line curve intercepts or cuts across the x-axis.
Form the graph given, we can see that at x = 0 and x = 4, the value of y = 0. Simply put, the curve cuts the x-axis at x = 0 and x = 4.
x-intercepts are 0 and 4.