9514 1404 393
Answer:
4 hours
Step-by-step explanation:
There are several ways to work this. One way that often works well with multiple choice questions is "try the answers".
6.5 hours
If the half-life is 6.5 hours, then 200 mg will remain after 6.5 hours, and 100 mg will remain after 13 hours. The decay rate is faster than that, so 6.5 hours is not right, but a lesser value is.
4 hours
If the half-life is 4 hours, then 200 mg will remain after 4 hours, and 100 mg will remain after 4 more (=8) hours. An additional 4 hours will cut that in half again to 50 mg after 12 hours.
The half-life is 4 hours.
what's 380 divided by 40
Can someone please answer this?
What is the slope of a line that passes through points (1,5) and (3,1)?
Answer:
Slope = -2
Step-by-step explanation:
(x₁, y₁) = (1 , 5) and (x₂ , y₂) = (3 , 1)
Slope = [tex]\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]
[tex]= \frac{1- 5}{3 - 1}\\\\=\frac{-4}{2}\\\\= - 2[/tex]
we are told 5 miles is 8 km.
Convert 32 km to miles.
Step-by-step explanation:
5miles=8km
so, x miles=32km
8x=160
x= 160÷8
=20miles
Mr. Smith had 3/4 of a peach pie left over. He spilt the leftover pie among his 3 co-workers. What fraction of the pie did each co-worker receive
Answer:
[tex]Fraction = \frac{1}{4}[/tex]
Step-by-step explanation:
Given
[tex]Pie = \frac{3}{4}[/tex]
[tex]Workers = 3[/tex]
Required
Determine the fraction received by each worker
To do this, we simply divide the fraction of the pie by the number of workers.
[tex]Fraction = \frac{Pie}{Workers}[/tex]
[tex]Fraction = \frac{3}{4}/3[/tex]
Convert to multiplication
[tex]Fraction = \frac{3}{4} * \frac{1}{3}[/tex]
[tex]Fraction = \frac{3}{12}[/tex]
Divide numerator and denominator by 3
[tex]Fraction = \frac{3/3}{12/3}[/tex]
[tex]Fraction = \frac{1}{4}[/tex]
Answer:
86
Step-by-step explanation:
A rocket being launched has three engines that are independent of each other. The probability of an engine firing is 0.97. What is the probability of at least one engine not firing? PLEASE HELP
Answer:
.0873
Step-by-step explanation:
Jennifer is 20 miles north of her house, and she is driving north on the highway at a rate of 55 miles per hour. How far has she driven after 2 hours?
Answer:
130 miles
Step-by-step explanation:
(55 x 2) + 20 = x Miles
110 + 20 = x miles
130 miles
I added pics cause it’s 2 in the morning.. I’m having back pain, thigh pain, cramps EVERYWHERE.. headache and just finished babysitting my baby brother.. help a gurl out please
Answer:
1/4^2 (The first one)
Step-by-step explanation:
Which point lies on the circle that has a center at (-2,3) and a radius of 4
Answer:
(-6,3) is one of infinitely many answers.
Step-by-step explanation:
The radius of the circle is 4, so any point that is 4 units away from the point (-2,3) would be considered a correct answer.
Circumference of circle T is 4 times the circumference of circle S
Answer:
Circumference of S = T/4
I didn't quite catch your question though, could you elaborate a bit more?
Solve the proportion x/21 = 1/3
Answer:
21 (Verified Answer) ✅Step-by-step explanation:
A proportion is solved by cross multiplying.
3x = 21
x = 7
Now, let's check it
3(7) = 21 x 1
21 = 21 ✅
Answer:
x=7
Step-by-step explanation:
CROSS MULTIPLY
x/21=1/3
3*x=3x
21*1=21
3x=21
x=7
Find the slope of the line that passes through each pair of points
Answer:
Slope of 2
Step-by-step explanation:
First thing is to look at the change in x and y from the points. You can do this by subtracting the x valie from the other value and the same for the y values. So you would do 2-0=2.
So we know the change in x between the points, so now we find the change in y. 5-1=4.
Now that we know the change in x and y, we use the expression below to solve for the slope.
[tex] \frac{rise}{run} \: or \: \frac{y}{x} [/tex]
We can insert what we found and then solve for the equation
[tex] \frac{4}{2} [/tex]
So we solve for that, which is 2. Now we know the slope is 2.
Answer:
given us,
(x1y1)= (2,5)
(x2y2)= (0,1)
here,
(y-y1)= (y2-y1)/ (x2-x1)× (x-x1)
or, (y-5)=(1-5)/(0-2)× (x-2)
or, y-5= -4/-2 ×(x-2)
or,y-5= 2(x-2)
or, y-5/ x-2= 2
or,y-5= 2x-4
or, 2x-y= -4+5
:. 2x-y= 1
Step-by-step explanation:
2x-y= 1
solve 2x+y=3.5,-x+2y=2.5
Answer:
y=1.7
x=.9
Step-by-step explanation:
Answer:
x = 1.75 -y, y = 1.25 + x
Step-by-step explanation:
Part One
2x + y = 3.5
Divide
x + y = 1.75
Move the variable and change its sign
x = 1.75 -y
Part Two
-x + 2y = 2.5
Divide
-x + y = 1.25
Add
y = 1.25 + x
the lenth of a quarter is 0.955 inch round the length of a quarter to the nearest tenth of an inch.
Answer: 1 inch
Step-by-step explanation: when you round to the tenth place, you look at the number to the right of the decimal. Because it is .95, you round up. If it was .94 or under, you would round down. .95 rounded up would make 10 in the tenths place, so we add our decimal to get 1.0, or 1 inch
4 x 6 - 8 / 4 = help me out
Answer:
22
Step-by-step explanation:
You use the order of operations: PEMDAS.
Sooo...
4*6-8/4=
24-8/4=
24-2=
22
DUE IN 20 PLS HELP!!!!
2+2 lmmmaaoooooo
Answer:
444444444444444
Step-by-step explanation:
Please help me with this assignment. Will give brainliest
Answer:
Step-by-step explanation:
B
A well respected wild life researcher recently conducted a
study of wild Jackalopes. He trapped and weighed 60 adult
wild Jackalopes in an attempt to gauge their health. As a
population, if a species loses weight it could be a signal
that the health of the population is in danger. Research conducted 10 years prior found that the population mean was 69.9 pounds. Test the claim that population mean of wild Jackalopes is equal to 69.9 lbs. Use a significance level of .01.
Claim: ______________
Null Hypothesis: ________
Alternative Hypothesis: ___________________________
Test Statistic: (state the statistic and find it’s value):
Find the pvalue for the given test statistic:
At the 0.01 significance level would you reject the null or fail to reject the null? Justify your answer.
What final conclusion could you draw from your research?
Answer:
Claim : men weigh of wild jackalopes is 69.9
The null hypothesis : H0 : μ = 69.9
Alternative hypothesis : H1 : μ ≠ 69.9
Test statistic = −2.447085
P value = 0.0174
Conclusion :
Fail to Reject the Null hypothesis
Step-by-step explanation:
From the question given :
The claim is that : mean weight of wild jackalopes is still the same as 10 years with a mean weight of 69.9 lbs.
The null hypothesis : H0 : μ = 69.9
Alternative hypothesis : H1 : μ ≠ 69.9
Using calculator :
Sample mean (x) = 66
Sample standard deviation (s) = 12.345
The test statistic t :
(x - μ) / (s/√n)
n = sample size = 60
(66 - 69.9) / (12.345 / √60)
t = −2.447085
P value at α 0.01, df = 59 is 0.0174
Since the p value is > 0.01, the result is not significant at 0.01. Therefore, we fail to reject the Null
find slope of the line giving brainly
Answer:
1
Step-by-step explanation:
Slope is x-y, so its 1
Answer
the slope is 1
Step-by-step explanation:
Which statement correctly distinguishes the functions of lipids from other types of biomolecules
Answer:
The answer is below.
Step-by-step explanation:
Given that there are no available options.
Here are the functions that are peculiar to lipids but not to other biomolecules (proteins, carbohydrates, nucleic acids)
1. contributes to the structure of membranes, particularly in cell enclosures and compartments.
2. guide against desiccation
3. keeps more energy.
4. Serves as insulation against cold.
5. Absorbs shocks.
HELP 50 POINTS IF RIGHT!
Answer:
we can see how many points it actually it is
Answer:
ahhh
Step-by-step explanation:
Downers grove has gotten 5 inches of snow and the snow depth is increasing by 6 inches every hour. Woodridge has gotten 13 inches of snow and is increasing 2 inches every hour. In how many hours will the snowfall of the towns be equal.
Answer:
2 hours
Step-by-step explanation:
Downers grove = 5 inches of snow + 6 inches every hour
= 5 + 6h
Woodridge = 13 inches + 2 inches every hour
= 13 + 2h
Where,
h = number of hours
In how many hours will the snowfall of the towns be equal?
Equate the snow falls of the towns
Downers grove = Woodridge
5 + 6h = 13 + 2h
Collect like terms
5 - 13 = 2h - 6h
8 = 4h
Divide both sides by 4
h = 8 / 4
= 2
h = 2 hours
The snowfall of the towns will be equal in 2 hours
a. How far would Lin and Noah run in 1 hour? Show
work on the sketch.
Remember - for this question you are trying to find the
number of miles per 1 hour. Miles per hour means miles
divided by hour.
Answer:
i need help
Step-by-step explanation:
Answer is from/credits= WaywardDelaney
The distance cover by Noah in 1 hour to cover distance is 6.5 miles
Step-by-step explanation:
Given as :
The distance cover by Lin = 2 miles = miles
The time taken to cover distance by Lin = hours
Again
The distance cover by Noah = 8 miles = miles
The time taken to cover distance by Noah = hours
Let the distance cover by Noah in 1 hour = d miles
∵ The distance cover by Noah in hours = miles
∴ The distance cover by Noah in 1 hour =
I.e d = miles
or, d = = 6.5 miles
So, The distance cover by Noah in 1 hour = d = 6.5 miles
Hence, The distance cover by Noah in 1 hour to cover distance is 6.5 miles Answer
x/10.24=4 tell me what is the answer?
Answer:
40.96
Step-by-step explanation:
x/10.24=4
times 10.24 on both sides
10.24 times 4
x=40.96
A publisher needs to send a money box to a local bike retailer and will send bucks and a combination of small and large boxes. Each small box can hold 30 books and each large box can hold 55 books.  A total of 10 boxes were sent which can hold 375 books altogether. 
Answer: ok
Step-by-step explanation:
Ok
What is the result of 96 divided by 6 ?use the model to find the anwser.
8
12
16
32
Answer:
96/6= 16
hope this helped hope u have an amazing day goodbye
I’m dead help me
67. A swimming pool holds 6200 L of water.
The water drains at a rate of 20 L/min. How
long will the pool take to empty?
Answer:
310
Step-by-step explanation:
Find the values of x, y, and z
Answer:
Values: x =54, y= 126, z = 35
If a child weighs 83 pounds, how many ounces does she weigh? 664 oz. 664 oz. 830 oz. 830 oz. 966 oz. 966 oz. 1328 oz.
Answer:
The answer is 1,328
Step-by-step explanation:
The number of ounces that she weighs will be 1328 ounces. Then the correct option is D.
What is conversion?Conversion means converting the same thing into different units.
The analysis of mathematical representations is algebra, and the handling of those symbols is logic.
PEMDAS rule means the Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This rule is used to solve the equation in a proper and correct manner.
If a child weighs 83 pounds. We know that in one pound, there are 16 ounces.
Then the number of ounces that she weighs will be
⇒ 83 x 16
⇒ 1328 ounces
Then the number of ounces that she weighs will be 1328 ounces. Then the correct option is D.
More about the conversion link is given below.
https://brainly.com/question/9414705
#SPJ2
I need help ASAP please it’s important
Answer: B.
Step-by-step explanation: If you simplify the equation you get 0 = 0, which is not a valid solution.
Need help ASAP!! Please!! Will mark brainliest
Answer:
D. 37.68
Step-by-step explanation:
Circumference of a circle is 2 x pi x radius
your radius is 6 bc its half of your diameter is 12
when you multify them together, it gives you ab 37.68