13) A certain radioactive isotope decays at a rate of 0.1% annually. Determine the half-life of this isotope, to the
nearest year.
C) 301 yr
D) 500 yr
A) 7 yr
B) 693 yr

Answers

Answer 1

Answer:

se__xxxx cha_t

Step-by-step explanation:

aaah aaaah


Related Questions

what is this equation????
m=y2-y1\y2-y1​

Answers

Answer:

Are you sure it ia not x2 - x1 in the denominator?

Answer:

x=2-y

Step-by-step explanation:

Root (2,0)

Vertical intercept (0,2)

What is the answer 1/2 x 2 1/3

Answers

Answer:

7/6

Step-by-step explanation:

Lucy has $60,000 in a savings account that earns simple interest of 14% per year. How much will she have in her account after 5 years?

Answers

Answer:

$42,000

Step-by-step explanation:

60,000 × .14 × 5 = 42,000

An electronics store is having a 15% off sale. Suppose the sale price(p) of a laptop is $495. Which statement are true for this stuation
A. P+ 0.15p represents the sales price
B. P- 0.15p represent the sales price
C. 0.85p represents the sales price
D. The sale price is 420.75
E. The sale price is 569.25

Answers

Answer:

The answer to the Question is D

Answer:

B, C, D

Step-by-step explanation:

If the sales price is 15% off, then the the price is .85(100-15%) of the price so c is true

this also makes b true. (100-15%) is p-.15

495 x .85 (100-15%)=420.75 so d is true

What is 3r-2 ?? Algebra is not my strong suit

Answers

if you trying to make r the subject then it would be

3r-2=0

3r=2 (added to both sides)

3r= 2/3

r=2/3 which is 0.6667 as a decimal

7
Carly has a bank account with a balance of $3,575. The account pays simple interest at a rate of
4.15%. How long will it take for the account to grow to $7000? Round to the nearest year.

Answers

Answer:

It will take 23 years for the account to grow to $7000.

Step-by-step explanation:

Simple Interest

The simple interest formula is given by:

[tex]E = P*I*t[/tex]

In which E is the amount of interest earned, P is the principal(the initial amount of money), I is the interest rate(yearly, as a decimal) and t is the time.

After t years, the total amount of money is:

[tex]T = E + P[/tex]

Carly has a bank account with a balance of $3,575.

This means that [tex]P = 3575[/tex]

The account pays simple interest at a rate of 4.15%.

This means that [tex]I = 0.0415[/tex]

How long will it take for the account to grow to $7000?

[tex]T = 7000[/tex]

The interest is:

[tex]T = E + P[/tex]

[tex]E = T - P = 7000 - 3575 = 3425[/tex]

Now we have to find t.

[tex]E = P*I*t[/tex]

[tex]3425 = 3575*0.0415*t[/tex]

[tex]t = \frac{3425}{3575*0.0415}[/tex]

[tex]t = 23.1[/tex]

Rounding to the nearest year, it will take 23 years for the account to grow to $7000.

honestly lost on these problems

Answers

Answer:

29

Step-by-step explanation:

Hope this helps

mark me brainlist

Answer:

27

Step-by-step explanation:

We know the missing angle for the triangle on the left is 63. And that is the same angle reflected to the other side. There is a right angle so its 63 + 90 = 157.

180 - 157 = 27

Help me out thanks !!!!!!

Answers

Answer:

a = 12

Step-by-step explanation:

as C^2 = A^2 + B^2

by Pythagoras theorem

so

A^2 = C^2 - B^2

= 13^2 - 5^2

= 169- 25

144

as 12^2 is equal to 144

hence side a is equal to 12

Answer:

[tex]h^2 = p^2 + b^2 \\ {13}^{2} = {p }^{2} + {5}^{2} \\ 169 = {p }^{2} + 25 \\ 169 - 25 = {p}^{2} \\ 144 = {p}^{2} \\ \sqrt{144} = p \\ 12 = p \\ p = 12[/tex]

find the variable h+ 1/2 = 3 1/4

Answers

Answer:

h=2 3/4

Step-by-step explanation:

2 3/4+1/2=

you can convert 1/2 into 2/4 so they have like denominators

2 3/4+2/4= 2 5/4 which is also equal to 3 1/4

The batteries produced in a manufacturing plant have a mean time to failure of 30 months with a standard deviation of 2 months. I select a simple random sample of 400 batteries produced in the manufacturing plant. I test each and record how long it takes for each battery to fail. I then compute the average of all the failure times. The sampling distribution of is approximately:

Answers

Answer:

By the Central Limit Theorem, the sampling distribution is approximately normal, with mean 30 and standard deviation 0.1.

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean [tex]\mu = p[/tex] and standard deviation [tex]s = \sqrt{\frac{p(1-p)}{n}}[/tex]

The batteries produced in a manufacturing plant have a mean time to failure of 30 months with a standard deviation of 2 months.

This means that [tex]\mu = 30, \sigma = 2[/tex]

Sample of 400 batteries. The sampling distribution of is approximately:

So [tex]n = 400, s = \frac{\sigma}{\sqrt{n}} = \frac{2}{\sqrt{400}} = 0.1[/tex]

By the Central Limit Theorem, the sampling distribution is approximately normal, with mean 30 and standard deviation 0.1.

Write 8 1/5 as a fraction

Answers

Answer:

8.2

Step-by-step explanation:

let me know if its wrong

( 3 x + 2 ) + ( − 5 x + 7 )

Answers

Answer: -2x+9

Step-by-step explanation:

(3

Answer:

It wasnt letting me answer so I put it in the comments but the answer is -2x+9

Step-by-step explanation:

Brainliest??

How can you find f(4) if f(x)=7x^(2)-5

Answers

Answer:

107

Step-by-step explanation:

f(x)=7x^(2)-5

f(4) means that x=4

f(4)=7*4^(2)-5

    = 7 * 16 -5

    = 112 -5

    = 107

a bag has 7 red scraps, 3 orange scraps, and 5 speckled scraps. you randomly pull a scrap from the bag, keep it out, and then pull out another one.

what is the probability of getting a speckled and then not getting a orange? write answer as a fraction.

Answers

Answer:

Step-by-step explanation:

total scraps=7+3+5

Red  Orange   Speckeled

  7         3                 5

                               -1

   7                3            4

P1=5/15

[tex]P2(1~red~ or~ 1 ~speckeled)=\frac{7}{14} +\frac{4}{14} =\frac{11}{14} \\P=\frac{5}{15} \times \frac{11}{14} =\frac{11}{42}[/tex]

What is the area of the shaded region?

Answers

(answer is 17,680.) 24*30=720 40*40=1600 720+1600=2320. 100*200=20,000. 20,00-2320=17,680.
Yes correct the answer is 17,680

Will Give Brainleist! Plz help me on this problem

Which equation represents a line with slope 3/5 of and y-intercept of -1 ?

Answers

Answer:

y = 3/5x - 1

i think that's what's supposed to be there...

Gavin needs to buy candy for the 11 students in his class plus himself. Gavin and each student will get one bag of candy. He uses $20 to buy two different types of candy. Gavin buys x bags of gummy bears that cost $1.50 per bag and y bags of chocolates that cost $2.00 per bag. The system of equations used to represent this situation is graphed, as shown.

Answers

Answer:

20=1.50(6)+2.00(4)

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

PLEASE HELP I WILL GIVE BRANLIEST IF YOUR ANSWER IS CORRECT!

Answers

Answer:

1:4

2:8

3:12

4:16

Step-by-step explanation:

1:4 2:8 3:12 4:16 because every one is adding 4 hope this helps. ;)

help w all please!!! i dont even know where to plot lol

Answers

a) -2
b) -1
c) -0,75; -4
d) 2

can somebody help me with this quickly I forgot how to do this and yeah ill mark you!

Answers

Answer:

4/11 i believe

Step-by-step explanation:


a gift box in the shape of a rectangular prism measures 8in by 8in by 10in. what is the least amount of wrapping paper needed to wrap the gift box? ​

Answers

Answer:

Step-by-step explanation:

The surface area of a rectangular prism is

A=2(xy+xz+yz), where x,y,z are the dimensions, in this case

A=2(8(8)+8(10)+8(10))

A=2(64+80+80)

A=2(224)

A=448in^2

So the minimum amount of wrapping paper is 448in^2

(7.11 x 10') (2.97 x 10-3)​

Answers

Answer:

The answer is 1898.37

if you click the image it will show you how to solve the equation. I hope this helps you.

I need help sooo please HELP ME :’) ill give good points because its my last question:


When is the multiplicative relationship used? Select all that apply.

options (more than 1):

1.When multiplying the same amount to an x-value.
2.When subtracting the same amount to an x-value.
3.When dividing the same amount to an x-value.
4.When adding the same amount to an x-value.

Answers

Answer:

1 and 3

Step-by-step explanation:

What is the slope of a line of best fit if its equation is y = −2x + 3?

−2
Negative 1 over 2
1 over 3
3

Answers

Answer:

-2

Step-by-step explanation:

y=m(slope)x+b(y axis)

please help me. In the circle below, U is the center, VX is a diameter, and m VW = 110 degrees Use this information to fill in the blanks.

Answers

Answer:

Step-by-step explanation:

Inscribed angle → ∠VXY

(Angle included between two chords meeting at a point on circumference)

Minor arc → (arc VY)

(Arc measuring less than 180° is called as minor arc)

Semicircle → (arc VWX)

(Arc inscribed by the diameter)

m(arc VWX) = 180°

(Semicircle)

m(∠VUW) = 110°

(Central angle subtended by an arc)

PLEASE HELP!! Will give out brainliest!!! But also have to explain how you got the answers!! Please and thanks!!
1) Consider the piecewise
function shown on the graph, which is composed of exponential,
linear, and polynomial pieces.
h(x)
Complete the statements describing function h.
10
8
6
Over the interval [0, 3), function h is represented
4
2
by
function
-10
-8-6
4
02
-2
4
6
8
10
Function h
a continuous function.
As x approaches positive infinity,
h(x) approaches
As x approaches negative infinity,
-10
h(x) approaches

Answers

9514 1404 393

Answer:

exponentialis+∞-∞

Step-by-step explanation:

Neither linear nor exponential functions have a "wiggle" in their graph, so the piece in the region x < 0 is polynomial.

The piece in the interval [0, 3] is concave upward and has increasing slope. It could be polynomial, but is most likely the exponential piece of the function.

For x > 3, the function is linear.

There are no gaps in function value where the transition is made from one piece to another, so the function is continuous.

The function tends upward at the right side of the graph. It tends downward at the left side of the graph. This tells you the sign of the infinity they tend toward matches the sign of the infinity x tends toward.

__

On the interval [0, 3], h(x) is represented by an exponential function.

H(x) is a continuous function.

As x approaches +∞, h(x) approaches +∞.

As x approaches -∞, h(x) approaches -∞.

I aould appreciate if someone helped​

Answers

4/5 = 0.80
1/5 + 3/5 = 3/5 + 1/5

ASAP will give brainliest
Question 6(Multiple Choice Worth 4 points)
(07.06) There are currently 3 people signed up for the debate club. The school will not recognize the club officially until it has more than 5 members.
Which of the following graphs includes the possible values for the number of people who still need to sign up to make the club "official?"
H>
-10-9-8-7-6-5-4-3-2-1 0 1 2 3 4 5 6 7 8 9 10
-10-9-8-7-6
-3-2-1 0 1 2 3 4 5 6 7 8 9 10
--10-9-8-7-6
1-2-1 0 1 2 3 4 5 6 7 8 9 10
OH
-10-9-8-7-6-5-4-3-2-1 0 1 2 3 4 5 6 7 8 9 10

Answers

Answer:

it should be the last one

Step-by-step explanation:

identify the coefficeient following expression

6a+7​

Answers

Answer:

6

Step-by-step explanation:

The coeffecient is the number next to the variable. Boom. Done.

Answer:

6

Step-by-step explanation:

a coefficient is a number in front (behind) the variable (ex. the coefficient in 2x is 2, and the variable is x)

i hope this helps :)

The part of an expression that is being added or subtracted

Answers

The terms of a mathematical expression are parts of the expression that are connected with addition or subtraction. The factors in a mathematical expression are parts of the expression that are connected with multiplication.  

I don't know what you meant  but I hope this helps.

Other Questions
Please help please giving out brainless helppppppppppppppppppppppppppppppppppppp plz 4. According to the graph above, which ofthe following best represents the number ofcalories from protein a person on a 2,200-calorie diet should consume?A. 450B. 550C. 625D. 650 If a plant has xylem and phloem, then the plant is best described asnonflowering.vascular. flowering. nonvascular. ill mark brainist plss help Como se llama la novia de don Quijote de La Mancha? H help xxjvfgfhgjjjjjjjjjj Find the discriminant when a= 3, b= -1, and c= -8 A scientist is studying a liquid. If she lowers the temperature of the liquid,which of the following will most likely occur? *PLEASE HELPPPPPPPPP*The liquid will boilThe liquid will meltThe liquid will freezeThe liquid will evaporate Which of the following sets of ordered pairs represents a function?O (-5, 10), (0.15), (5, 10)O (3.5),(3.9),(4,2)O (9.6).(6.3). (9.3)O (0.6), (12.10), (0.-6) What kind of triangle is this? (ASA, SAS, HL, AAS, SSS) Which processes are involved in sexual reproduction in plants? an innovation among the dicynodonts that allowed them to fill brand new niches. an innovation among the dicynodonts that allowed them to fill brand new niches. the availability of previously occupied niches. the availability of previously occupied niches. the extinction of the dinosaurs (except the birds). the extinction of the dinosaurs (except the birds)., the evolution of humans. Answer the questions below to help me!!! summary of "The Tornado That Changed America."1. Who or what isthe article mainlyabout?2. What significantevent does thearticle describe?3. Who or whatcaused this event?4. How did thisevent affect themain person orpeople in thearticle?5. Write any otherimportant detailsyou haven'tmentioned.Plz I need help with this Find the slope of the line that contains the points:(-4,3) and (4,9) A cheetah can run 67.52 feet per second. How fast can a cheetah run in 3.6 seconds? Show your work, write your answer in a complete sentence I really need help with this. Nicole bought a pair of shoes for$37.93. The sales tax was $2.84. Howmuch money did Nicole spend on thepair of shoes before taxes? Describe the communism system that the Soviet Union had Choose the expression that is NOT equivalent to the following expression:45y + 995(9y + 19.8)9(5y + 11)2(22.5y + 49.5)4(11y + 22)