Answers
Answer:
31.5 years.
Step-by-step explanation:
Half life is given by [tex]= -\frac{ln(2)}{k}[/tex]. Where we use the natural logarithm. Plugging in a value of [tex]k = -0.022[/tex] we get: 31.5 years for the half life.
Related Questions
I need help with questions 4-9 please and thank you
Answers
Answer:im not sure but i thinkk its like this
Step-by-step explanation:
You use the distributive property so
4. 16
5. 18
in numbre six you multuply 6x5 and 5x5 then you add it and its 55
6.55
7.6
8.39
9.17
Triangle ABC is translated according to the rule (x, y) → (x + 2, y – 8). If the coordinates of the pre-image of point B are
(4, –5), what are the coordinates of B'?
(2, 3)
(1, –9)
(–3, –4)
(6, –13)
Answers
Answer:
(6,-13)
Step-by-step explanation:
substitute x=4 and y=-5.
Therefore,
B(4, -5 ) → B(4+2,-5-8)
Simplify
B(4,-5) → (6,-13)
or you can do:
(4, -5) ⇒ (4+2, -5-8) = (6, -13)
Lenvy~
Answer:
(6, –13)
Step-by-step explanation:
The answer above is correct.
one digit even prime numbers
a.finite b. infinite
Answers
Answer:
a
Step-by-step explanation:
Answer:
a
Step-by-step explanation:
hope this helps
i took this test
A series of isosceles triangles are drawn between two red line segments.
a
= 22°.
Work out
x
, explaining each stage of your working in the comment box.
Answers
Based on the definition of isosceles triangle, the value of x in the given diagram is: 84°.
What is an Isosceles Triangle?An isosceles triangle has two base angles of equal length.
Given that, a = 22°, and using the information in the image attached below, we have the following:
m∠1 = a = 22° (base angles)
m∠2 = a + m∠1 = 22 + 22 = 44° (external angle theorem)
m∠3 = m∠2 =44° (base angles)
m∠4 = 180 - (180 - m∠2 - m∠3) - m∠1 = 180 - (180 - 44 - 44) - 22
m∠4 = 70°
m∠5 = m∠4 = 70° (base angles)
m∠6 = 180 - (180 - m∠5 - m∠4) - m∠3
m∠6 = 180 - (180 - 70 - 70) - 44
m∠6 = 96°
m∠7 = m∠6 = 96° (base angles)
x = 180 - m∠7
x = 180 - 96
x = 84°
Therefore, based on the definition of isosceles triangle, the value of x in the given diagram is: 84°.
Learn more about isosceles triangle on:
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which is the right one???
Answers
Ston:A
ep-by-step explnswer:
anati
Belle bought an aquarium priced at $90. Shipping and handling cost an additional 10% of the price. What was the total cost of the aquarium, including shipping and handling?
Answers
Steps:
Original: $90.00
Total: $ ?
100% = $90.00
10% Shipping and Handling
100% + 10% = Total
90.00 * 1.10 = 99.00
$99.00
5kg of food is £45 jim buys 3kg how much does it cost
Answers
€27
Why
45/5=9
Meaning that for 1kg if food it’s €9
So
9*3=27
5 - (x + 5) > -2(x+4)
Answers
Answer:
5-(1+5)= -1
-2(1+4)=-10
Step-by-step explanation:
Answer:
x>16
Step-by-step explanation:
5-(x+5) cancels out to just x
Every conditional has two parts. The part following "IF" is the ____ and the part following "THEN" is the ____.
Answers
Answer:
hypothesis is the answer for the fist blank
Step-by-step explanation:
The volume of two spheres are in the ratio 27:125. What is the ratio of their areas?
Answers
The volume of two spheres are in the ratio 27:125. The ratio of their areas is 9:25
If the volume of two spheres are in the ratio 27:125, then the ratio of their areas is 9:25.
How to compute the above ratioThe ratio of the volumes of two spheres is equal to the ratio of the cubes of their radii.
Therefore, if the volume ratio is 27:125, the radius ratio would be the cube root of that, which is 3:5.
The surface area of a sphere is given by the formula A = 4πr², where A is the surface area and r is the radius.
Since the radius ratio is 3:5, the ratio of their surface areas would be (3/5)² : 1², which simplifies to 9:25.
Therefore, the ratio of the surface areas of the two spheres is 9:25.
Learn more about ratio at:
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#SPJ2
NO LINKS!!!
Use the fact that the trigonometric functions are periodic to find the exact value of each expression. Don't use a calculator. This is NOT MULTIPLE CHOICE!!
a. sin (405°)
b. cot (390°)
c. cos (33π/4)
d. sec (17π/4)
c.
Answers
[tex]\\ \rm\rightarrowtail sin(405)[/tex]
[tex]\\ \rm\rightarrowtail sin(360+45)[/tex]
[tex]\\ \rm\rightarrowtail sin45[/tex]
[tex]\\ \rm\rightarrowtail \dfrac{1}{\sqrt{3}}[/tex]
#2
[tex]\\ \rm\rightarrowtail cot(390)[/tex]
[tex]\\ \rm\rightarrowtail cot(360+30)[/tex]
[tex]\\ \rm\rightarrowtail cot30[/tex]
[tex]\\ \rm\rightarrowtail \sqrt{3}[/tex]
#3
[tex]\\ \rm\rightarrowtail cos(33\pi/4)[/tex]
[tex]\\ \rm\rightarrowtail cos(8\pi+\pi/4)[/tex]
[tex]\\ \rm\rightarrowtail cos\pi/4[/tex]
[tex]\\ \rm\rightarrowtail \dfrac{1}{\sqrt{2}}[/tex]
#4
[tex]\\ \rm\rightarrowtail sec(17\pi/4)[/tex]
[tex]\\ \rm\rightarrowtail sec(4\pi +\dfrac{\pi}{4})[/tex]
[tex]\\ \rm\rightarrowtail sec\dfrac{\pi}{4}[/tex]
[tex]\\ \rm\rightarrowtail \sqrt{2}[/tex]
Answer:
[tex]\sin(405)=\dfrac{\sqrt{2}}{2}[/tex]
[tex]\cot(390)=\sqrt{3}[/tex]
[tex]\cos\left(\dfrac{33}{4}\pi\right)=\dfrac{\sqrt{2}}{2}[/tex]
[tex]\sec\left(\dfrac{17}{4}\pi\right)=\sqrt{2}[/tex]
Step-by-step explanation:
Trig identities used:
[tex]\sin(A\pm B)=\sin A \cos B \pm \cos A \sin B[/tex]
[tex]\cos(A \pm B)=\cosA \cos B \mp \sin A \sin B[/tex]
[tex]\tan(A \pm B)=\dfrac{\tan A \pm \tan B}{1 \mp \tan A \tan B}[/tex]
[tex]\cot A=\dfrac{1}{\tan A}[/tex]
[tex]\sec A=\dfrac{1}{\cos A}[/tex]
Standard trig angles
[tex]\sin(0 \pm 360n)=\sin(0 \pm 2 \pi n)=0\\\\\cos(0 \pm 360n)=\cos(0 \pm 2 \pi n)=1\\\\\tan(0 \pm 180n)=0\\\\\sin(45 \pm 360n)=\sin(\frac14 \pi \pm 2\pi n)=\dfrac{\sqrt{2}}{2}\\\\\cos(45 \pm 360n)=\cos(\frac14 \pi \pm 2\pi n)=\dfrac{\sqrt{2}}{2}\\\\\tan(30 \pm 180n)=\dfrac{\sqrt{3}}{3}[/tex]
Question a
[tex]\sin (405) = \sin (360 + 45)[/tex]
[tex]= \sin(360)\cos(45) + \cos(360)\sin(45)[/tex]
[tex]=0 \cdot \dfrac{\sqrt{2}}{2}+1 \cdot \dfrac{\sqrt{2}}{2}[/tex]
[tex]=\dfrac{\sqrt{2}}{2}[/tex]
Question b
[tex]\cot(390)=\dfrac{1}{\tan(390)}[/tex]
[tex]=\dfrac{1}{\tan(360+30)}\\\\[/tex]
[tex]=\dfrac{1-\tan(360) \tan(30)}{\tan(360)+\tan(30)}[/tex]
[tex]=\dfrac{1-0 \cdot \frac{\sqrt{3}}{3}}{0+\frac{\sqrt{3}}{3}}[/tex]
[tex]=\dfrac{1}{\frac{\sqrt{3}}{3}}[/tex]
[tex]=\sqrt{3}[/tex]
Question c
[tex]\cos\left(\dfrac{33}{4}\pi\right)=\cos(8\pi+\frac14\pi)[/tex]
[tex]=\cos(8\pi)\cos(\frac14\pi)}-\sin(8\pi)\sin(\frac14\pi)}[/tex]
[tex]=1 \cdot \dfrac{\sqrt{2}}{2}-0 \cdot \dfrac{\sqrt{2}}{2}[/tex]
[tex]=\dfrac{\sqrt{2}}{2}[/tex]
Question d
[tex]\sec\left(\dfrac{17}{4}\pi\right)=\dfrac{1}{\cos(4\pi+\frac14\pi)}[/tex]
[tex]=\dfrac{1}{\cos(4\pi)\cos(\frac14\pi)-\sin(4\pi)\sin(\frac14\pi)}}[/tex]
[tex]=\dfrac{1}{1 \cdot \dfrac{\sqrt{2}}{2} -0 \cdot \dfrac{\sqrt{2}}{2}}[/tex]
[tex]=\dfrac{1}{\dfrac{\sqrt{2}}{2} }[/tex]
[tex]=\sqrt{2}[/tex]
Finding the surface area of a right triangular prism
Answers
Answer:
The formula that is used to calculate the surface area of a triangular prism is, Surface area = (Perimeter of the base × Length of the prism) + (2 × Base Area) = (S1 + S2+ S3)L + bh; where 'b' is the bottom edge of the base triangle, 'h' is the height of the base triangle, L is the length of the prism and S1, S2 and S3 ...
I need the mathematical language pls
Answers
Magan owns a small business selling bagels. He knows that in the last week 39
customers paid cash, 9 customers used a debit card, and 59 customers used a credit
card.
Based on these results, express the probability that the next customer will pay with a
debit card as a fraction in simplest form.
Answers
Using it's concept, it is found that there is a [tex]p = \frac{9}{107}[/tex] probability that the next customer will pay with a debit card.
What is a probability?A probability is given by the number of desired outcomes divided by the number of total outcomes.
In this problem, there were 39 + 9 + 59 = 107 purchases, of which 9 were paid with debid cards, hence:
[tex]p = \frac{9}{107}[/tex]
There is a [tex]p = \frac{9}{107}[/tex] probability that the next customer will pay with a debit card.
More can be learned about probabilities at https://brainly.com/question/14398287
Answer: 9/107
Step-by-step explanation:
Explaining Equivalent equations
What are equivalent equations? How do you find them?
Write a few sentences describing them.
Answers
Answer:
Equivalent equations are equations that have exactly the same solution. To find equivalent equations, it is best to solve them individually to find the solutions. The ones with the same solution in the end are considered equivalent equations.
Answer:
Sample Response: Equivalent equations have the same solution. You can create equivalent equations by performing the same operations on each side of the equation. You can check for equivalence by finding the solution for each equation.
Step-by-step explanation:
Hannah has a bag that contains orange chews, lemon chews, and lime chews. She performs an experiment. Hannah randomly removes a chew from the bag, records the result, and returns the chew to the bag. Hannah performs the experiment 74 times. The results are shown below:
An orange chew was selected 39 times.
A lemon chew was selected 17 times.
A lime chew was selected 18 times.
Based on these results, express the probability that the next chew Hannah removes from the bag will be orange chew as a decimal to the nearest hundredth.
Answers
Based on these results, probability that the next chew Hannah removes from the bag will be orange chew is 0.53.
What is the probability of picking an orange chew?Probability determines how likely it is that event would occur. The probability that an event would occur lies between 0 and 1. It is zero if the event does not occur and 1 if the event occurs.
The probability of picking an orange chew = 39 / 74 = 0.53
To learn more about probability, please check: https://brainly.com/question/795909
these numbers form an addition and subtraction fact family 6,7,13 choose the fact family formed by these numbers a 7+13=20 13+7=20 13-13=0 13-0=13 b 7+0=7 6+0=6 13-0=13 13-13=0 c 7+6=13 6+7=13 13-6=7 13-7=6 c 7+6=13 13=7+6 13-6=7 7=13-6 is it abc or d
Answers
In the game of Pick-A-Ball, there are 10 colored balls: 2 red, 4 white, and 4 blue. The balls have been placed into a small bucket, and the bucket has been shaken thoroughly. You will be asked to reach into the bucket without looking and select 2 balls. Because the bucket has been shaken thoroughly, you can assume that each individual ball is selected at random with equal likelihood of being chosen. It is common in games of chance to be rewarded for obtaining unlikely results. For example, in the game of poker, hands that are less likely to occur tend to trump hands that are more likely to occur. That same concept applies in this game. It costs $10 to play Pick-A-Ball, and your prize is the reciprocal of the probability of obtaining your exact sequence of results, expressed in dollars. For example, if the probability of obtaining your exact sequence of results is 0.10, your prize is 1/0.10
Required:
What is the probability of selecting the color of ball that you just selected?
Answers
Answer:
The probability of selecting the color of ball that you just selected(a red ball) is [tex]P(r) = \frac{2}{10}[/tex]
Step-by-step explanation:
From the question we are told that
The total number of colored balls is n = 10
The number of red balls is r = 2 red
The number of white ball is w = 4
The number of blue balls is b = 4
The number of balls to be selected is N = 2 balls
The cost of playing picking a ball is c = $10
The winnings is [tex]k = \$ P(A)[/tex]
Here P(A) is the probability of obtaining the exact sequence of result and from the question it is P(A) = 0.10
Generally my price according to the question is
[tex]k = \frac{0.10 }{10}[/tex]
=> [tex]k = 0.01 [/tex]
Let assume we selected a red ball
Generally the probability of selecting a red ball is mathematically represented as
[tex]P(r) = \frac{2}{10}[/tex]
Use the discriminant to find what type of solutions the equation has,
3x^2+ 7x = 7
Answers
=
−
7
±
133
6
x=
6
−7±
133
7 Jamila has a large toy box and a small toy box The large box is 120 cm long and 90 cm high. Each length of the small box is one-sixth the length of the large box
Write the length and height of the small box. Show your working
LENGTH of small box: .......cm
HEIGHT of small box: ......cm
Answers
Answer:
length = 20 cm
height = 15 cm
Step-by-step explanation:
Large Toy Box
length = 120 cmheight = 90 cmGiven:
Each length of the small toy box is one sixth of the corresponding lengths of the large toy box.Therefore, to calculate the length and height of the small toy box, multiply the length and height of the large toy box by one sixth:
[tex]\sf length=120 \times \dfrac16=\dfrac{120 \times 1}{6}=\dfrac{120}{6}=20 \ cm[/tex]
[tex]\sf height=90 \times \dfrac16=\dfrac{90 \times 1}{6}=\dfrac{90}{6}=15 \ cm[/tex]
Therefore,
length = 20 cmheight = 15 cmAnswer:
length = 20 cm , height = 15 cm
Step-by-step explanation:
calculate [tex]\frac{1}{6}[/tex] of the dimensions by dividing the large box dimensions by 6
length of small box = 120 cm ÷ 6 = 20 cm
height of small box = 90 ÷ 6 = 15 cm
Jake joins a soccer club. There is a registration fee of $35 dollars and a charge of $60 a month. If m is the number of months that Jake plays in the club and c is the total amount he pays, write an equation to represent the relationship between c and m.
Answers
60m + 35 = c
hope that helps :)
What kind of solution is x+3=2x-18
Answers
Step-by-step explanation:
x + 3 = 2x - 18- x = - 21x = 21This is your answer.I need to find the length
Answers
Answer:
5.5
Step-by-step explanation:
[tex]-(a+b)+a[/tex]
Its so hard please help me quickly
Answers
Answer:
-b
Step-by-step explanation:
❖ Step 1: Apply distributive property.
[tex](-1)(a) + (-1)(b)+a[/tex] [tex]-a-b+a[/tex]❖ Step 2: Combine like terms.
[tex](-a+a)+(-b)[/tex] [tex]-b[/tex]Therefore, the answer is -b.
Have a lovely rest of your day/night, and good luck with your assignments! ♡
Ordered pair for 3x + 5y = 2
9x + 11y = 14
Answers
Answer:
y = -3/5x +2 y = -9/11 + 14
Step-by-step explanation:
3x + 5y = 2(subtract 3x on both sides)
5y = -3x +2(divide by 5)
y = -3/5x + 2
9x + 11y = 14 (subtract 9x on both sides)
11y = -9x + 14 (divide by 11)
y = -9/11x + 14
Answer:
Step-by-step explanation:
-9x - 15y = -6
9x + 11y = 14
-4y = 8
y = -2
3x + 5(-2) = 2
3x - 10 = 2
3x = 12
x = 4
(4, -2)
Can someone help me how to solve this please
200/50*17/2*5/17*50
Answers
Answer:
500
Step-By-Step Explanation:
200/50 = 4
4 * 17 = 68
68 / 2 = 34
34 x 5 = 170
170 / 17 = 10
10 x 50 = 500
there are 36 pupils in mr. castro mathematics class mr. castro wants to seperate the class into equal group for doing an activity. what are the five diffrent ways that the teacher can do to the group he class?
Answers
Answer:
He can use the factors of 36 to determine the number of groups he can divide the class into such that they are equal.
The Factors (excluding 1) are;
2, 3, 4, 6, 9, 12, 18
Using these therefore he can divide them;
Into 3 groups each with 12 people.Into 4 groups each with 9 people.Into 6 groups each with 6 people. Into 9 groups each with 4 people. Into 12 groups each with 3 people.(a lot of points) just show work please: 18x^2y^2−24xy^2+36y^2
Answers
Answer:
[tex]6y^2(3x^2-4x+6)[/tex]
Step-by-step explanation:
I'm assuming that you wanted us to factor the equation.
[tex]18x^2y^2 - 24xy^2+36y^2\\= 6y^2(3x^2-4x+6)[/tex]
The function within the parentheses doesn't factor anymore. Hope this is what you needed!
Suppose that your younger sister is applying for entrance to college and has taken the SATs. She scored at the 85th percentile on the verbal section of the test and at the 96th percentile on the math section of the test. Because you have been studying statistics, she asks you for an interpretation of these values. What would you tell her?
I would tell her that out of all the people who took the verbal section, ___% scored higher than she did and ___ % scored at or below her score. For the math section, ___ % of those who took the exam scored at or below her score and ____ % scored higher than she did.
Answers
Answer:
See below
Step-by-step explanation:
Score at the 85th percentile on the verbal section of the testScore at the 96th percentile on the math section of the testBased on this info filling in the gaps
I would tell her that out of all the people who took the verbal section, _15__% scored higher than she did and _85__ % scored at or below her score. For the math section, _96_ % of those who took the exam scored at or below her score and _4_ % scored higher than she did.Which statement correctly describes the expression 19 · 3?
Answers
Answer:
Both factors are positive, so the product will be positive.
Step-by-step explanation:
no option available here so I hope
(Both factors are positive, so the product will be positive.)
bcz 19 · 3 are positive factors nd there product will be also postive
[tex] \bold {19 \times 3 = 57}[/tex]
All the best!