Answer:
132 gStep-by-step explanation:
Initial amount = 2112 gTime = 188 daysHalf-life = 47 days188 days / 47 days = 4 periods
Mercury left after 188 days:
2112 * (1/2)^4 = 2112* 1/16 =2112/16 =132 gJordie builds a model from 9:14am to 9:47am how many minutes does jordie spends building his model
Answer:
33 minutes
Step-by-step explanation:
You would do 9:47 - 9:14am which would equal 33(minutes).
evaluate the expression
(7×18+45)÷3×2
please help
Answer:
28.5
Step-by-step explanation:
(7×18+45)÷3×2
7x8 = 126
3x2 =6
(126+45) / 6
126+45= 171
171 /6
171/6 = 28.5
Find the slope of the line that passes through (6,1) and (9,8)
Answer:
2 1/3
Step-by-step explanation:
8-1=7
9-6=3
7/3= 2 1/3
What is the greatest common factor (GCF) of 54 and 45?
A.
9
B.
270
C.
6
Answer:
9
Step-by-step explanation:
BECAUSE 54 : 2,3,9. and 45 : 5,9. so the greatest common factor is 9
PLZ HELP ME PLZ I NEED IT
Answer:
Step-by-step explanation:
we see that when x = 0 the y = 7 so we already kno our y intercept is 7
then we can see that it decreases by 4 each time so our slope is -4x
now we just put that in equation form
y=-4x+7
hope this helps <3
What is the equation of the line that has a slope of 5 and passes through the point (-4, 10)? * (20 Points)
WILL GIVE BRAILLEST IF YOU HELP ME!
Answer:
3 centimeters per minute so solving the equation 15 divided by 4 for the y value equal to 30
Step-by-step explanation:
BRAINLIEST PLEASE
what is 2+n+6?
solve.
Answer:
2 + n + 6 = 8 + n
Step-by-step explanation:
that should be the answer
Can you arrange 25 small squares to make a larger square? Can you arrange
35 small cubes to make a larger cube?
I need 6x-10 ima not too good with these
x=11
the angles are congruent so 6x-10=56
6x=66
x=11
"6 reduced by a number"
Answer:
6-x
Step-by-step explanation:
Whats the percent of 550% of 22
Answer:
121
Step-by-step explanation:
Convert 550% into a decimal by moving the decimal point 2 times to the left. 5.5. Then multiply 5.5 x 22 to get 550% of 22.
Which graph represents the function below?
Look at picture
Answer:
Third graph
Step-by-step explanation:
what is 3/4 ÷ 1/8 tell me th asnwer
Answer:
3/4 * 8/1=24/4= 6
Step-by-step explanation:
3/4 ÷ 1/8
keep change flip
3/4 × 8/1
3×8=24 4×1=4
24/4 improper fraction
6 answer
Answer:
answers = 24/4 = 6
Step-by-step explanation:
Help needed, much appreciated
Answer:
7
Step-by-step explanation:
4 x -2 + 3 x 5 = 7
A manager of the credit department for an oil company would like to determine whether the mean monthly balance of credit card holders is equal to $75. An auditor selects a random sample of 100 accounts and finds that the mean owed is $83.40 with a sample standard deviation of $23.65. If you were to conduct a test to determine whether the auditor should conclude that there is evidence that the mean balance is different from $75, which test would you use? a) Z-test of a population mean b) Z-test of a population proportion c) t-test of population mean d) t-test of a population proportion
Answer:
c) t-test of population mean
Explanation:
The t-test statistic is used in hypothesis testing. Here we would use a one sample t test to test our hypothesis. The one sample t test measures the statistical difference between the hypothesized mean and the sample mean. In a one sample t test or single sample t test, a test variable is measured against a test value.
Example we compare our test variable to the hypothesized mean value $75 above.
The t test is used instead of z score when standard deviation is unknown.
Using the t test, we either accept or reject the null hypothesis given alternative hypothesis.
Can someone please help me out with 15 and 16
If you do just one of them that’d be great.
geometry proofs
Answer:
Step-by-step explanation:
MORE EASY POINTS FOR Y'ALL
Answer:
False
Step-by-step explanation:
There are 2 y values for 6 and 12. A function only has one for each x value.
Hope I helped!!!!
The sum of eleven and three times a number is equal to twenty six
Answer:
3x5+11 equals 26
Step-by-step explanation:
SOMEONE HELP ME WITH GEOMETRY PLEASE!!!!
Find the coordinates of the orthocenter of the triangle with the given vertices.
A(−1, 2), B(9, 2), C(−1, −3)
Answer:
is there a picture or something?
Answer:
it's (-1,2)
Step-by-step explanation:
2 pens in each pack of black pens 5 pens in each pack of red pens 6 pens in each pack of green pens On Monday number of packs sold of black, red and green pens = 7 : 3 : 4 A total of 212 were sold.
Answer:
The number of green pens sold is 96.
Step-by-step explanation:
Note: This question is not complete. The complete question is therefore provided before answering the question as follows:
A shop sells packs of black pens, packs of red pens and packs of green pens. There are:
2 pens in each pack of black pens
5 pens in each pack of red pens
6 pens in each pack of green pens
On Monday, number of packs of black pens sold : number of packs of red pens sold : number of packs of green pens sold = 7:3:4
A total of 212 pens were sold.
Work out the number of green pens sold.
The explanation of the answer is now given as follows:
Since the ratio is given in packs of pens, we have to first convert it to number of pens based on the number of pens in each pack. Therefore, we have:
7:3:4 is converted to (7 * 2) : (3 * 5) : (4 * 6) = 14 : 15 : 24
Based the new ratio, we have:
Weight of contribution of the green pens to the total number of pens sold = 24 / (14 + 15 + 24) = 24 / 53 = 0.452830188679245
The number of green pens sold can now be calculated as follows:
Number of green pens sold = Total pens sold * Weight of contribution of the green pens to the total number of pens sold = 212 * 0.452830188679245 = 96
Therefore, the number of green pens sold is 96.
DUE ASAP AT 11!!!!!!!!1 -3x - 6x = 6 + x - 7x
A -2
B -12
C -3
D 11
Answer:
The correct answer is -2
Answer:
-2
Step-by-step explanation:
3x-6x=6+x-7x
=> -3x-x+7x=6
=> -4x+7x=6
=> 3x=6
=> x=6/3
=>x=2
Y=2x + ? ITS DUE IN 20 MINUTES
3(2y + 4) = 7y + 4 - y y =
I cant get an accurate answer for this problem Help!
Answer:
No solutions
Step-by-step explanation:
3(2y + 4) = 7y + 4 - y
~Simplify both sides
6y + 12 = 6y + 4
~Subtract 12 to both sides
6y = 6y - 8
~Subtract 6y to both sides
0 = 8
Best of Luck!
Calculate the average rate of change for the given graph from x = 3 to x = 5 and select the correct answer below.
Answer:
Average rate of change between x = 3 to x = 5 is 0.
Step-by-step explanation:
Given quadratic function s passing through two points (3, 0) and (5, 0).
Average rate of change of a function between x = a and x = b is given by,
Average rate of change = [tex]\frac{f(b)-f(a)}{b-a}[/tex]
From the graph attached,
Average rate of change between x = 3 to x = 5 will be,
= [tex]\frac{f(5)-f(3)}{5-3}[/tex]
= [tex]\frac{0-0}{5-3}[/tex]
= 0
Therefore, average rate of change between x = 3 to x = 5 is 0.
Answer: The average rate of change for the given graph from x=3 to x=5 is 0
how do you write 7/10 as a decimal Can someone please help me!!
Answer:
0.7
Step-by-step explanation:
To get 7/10 as a decimal you simply divide 7 by 10 which gets you 0.7.
Evaluate, if x = -12, y = -4, and
z is = 9
richard and teo have a combined age of 42 richard is 12 years older than twos age how old are richard and teo
Answer:
teo= 15 years old
richard= 27 years old
Step-by-step explanation:
richard=r
teo=t
r + t=42
t + 12= r
u can use substitution here
(t+12) + t=42
2t + 12= 42
2t=30
t= 15
to find r, you just do 15 + 12= 27
to check you can do 27 + 15= 42
The age of Richard and Teo will be 27 years and 15 years, respectively.
What is the solution to the equation?The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.
Richard and Teo are 42 years old. Richard is 12 years older than Teo.
Let x be the age of Richard and y be the age of Teo. Then the equation is given as,
x + y = 42 ...1
x = y + 12 ...2
From equations 1 and 2, then we have
y + 12 + y = 42
2y = 30
y = 15
Then the value of the variable 'x' is given as,
x = 15 + 12
x = 27
The age of Richard and Teo will be 27 years and 15 years, respectively.
More about the solution of the equation link is given below.
https://brainly.com/question/545403
#SPJ2
For the function f(x)=3x-4 find f(2)
Hi there!
[tex]\large\boxed{f(2) = 2}[/tex]
Evaluate f(x) at x = 2 by substituting 2 for x:
f(x) = 3x - 4
f(2) = 3(2) - 4
f(2) = 6 - 4
f(2) = 2
It took Melanie ⅓ of an hour to ride her bike 2¾ of a mile. How many miles per hour can Melanie ride her bike?
Answer:
8.25 or 8 [tex]\frac{1}{4} \\[/tex]
Step-by-step explanation: