Jeannie took 40 milligrams of a medicine. The amount of medicine in her body will decrease by 15% each hour. Approximately how much of the medicine will be left in Jeannie's body after 4 hours? ​

Answers

Answer 1

Answer:23

Step-by-step explanation:


Related Questions

will give brainliest!

Answers

Answer: I recommend starting treatment immediately. If you take more than 8 days to make a decision, the disease can no longer be cured because it will affect more than 50% of the body.

Step-by-step explanation:

The percentage of the body affected by the disease is a function of the number of days:  

P(d) = 6d + 5

This percentage is a dependent variable and the number of days is the independent variable.

If we give values to d, we can calculate the percentage of the body affected by the disease.

P(1)= 6·1 + 5 = 11%

P(2)= 6·2 + 5 = 17%

P(3)= 6·3 + 5 = 23%

P(4)= 6·4 + 5 = 29%

P(5)= 6·5 + 5 = 35%

P(6)= 6·6 + 5 = 41%

P(7)= 6·7 + 5 = 47%

P(8)= 6·8 + 5 = 53%

Depending on the days since the beginning of the disease, the doctors have a treatment for a different stage.

Starting immediately, the treatment will be stage 1: less than 15%

Starting on day 2 or 3, the treatment will be stage 2: 15-25%

After day 3, the treatment will be stage 3: 25-50%

After day 8, there is no cure: more than 50% of the body is affected by the disease.

I recommend starting treatment immediately. If you take more than 8 days to make a decision, the disease can no longer be cured because it will affect more than 50% of the body.

Spymore

What is (x+2) times 1 over x ???

Answers

Answer:

(x + 2)/x

Step-by-step explanation:

(x + 2) × 1/x

= (x + 2)/x

2(t-3)² - 72 = 0. extracting square roots. with solution please​

Answers

Answer:

t = 9

Step-by-step explanation:

Here, we want to find the value of t

2(t-3)^2 -72 = 0

2(t-3)^2 = 72

divide both sides by 2

(t-3)^2 = 72/2

(t-3)^2 = 36

(t-3)^2 = 6^2

Since powers are equal, we equate base

t-3 = 6

t = 6 + 3

t = 9

NEED HELP QUICK HURRY

Answers

Answer:

Domain: -5 ≤ x < 1

Range: -4 ≤ x < 7

Step-by-step explanation:

Domain is the set of x-values that can be inputted into function f(x).

Range is the set of y-values that are outputted by function f(x).

We see from the graph that our x-values span from -5 to 1. Since -5 is closed dot, it is included in the domain, but since 1 is open dot, it is not included in the domain:

[-5, 1) or -5 ≤ x < 1

We see from the graph that our y-values span from -4 to 7. Since -4 is closed dot, it is included in the range, but since 7 is open dot, it is not included in the range:

[-4, 7) or -4 ≤ x < 7

What’s is the answer for 9-(-3)

Answers

Answer:

negative times A negative is a positive so your answer is 27

Step-by-step explanation:

-6n - 2n = 16 solve for n multi step equations

Answers

Answer:

n = -2

Step-by-step explanation:

-6n - 2n = 16

Combine like terms

-8n = 16

Divide each side by -8

-8n/-8 = 16/-8

n = -2

Answer:

n=-2

Step-by-step explanation:

-6×-2=12

-2×-2=4

12+4

=16

A hot air balloon is flying 260 feet in the air. It descends at a rate of 10 feet per second. Identify the rate of change

Answers

Answer:

26 secs until reaching ground level

Step-by-step explanation:

260/10=26

Which of the following is not a perfect square?
A. 50
B. 49
C. 121
D. 1

Answers

50 is not a perfect square because it doesn’t have a square root.

Hope this helped :)
A. 50
Because there’s no number multiplied by the same number once equals 50

if the volume of a cube is 1,729 cubic inches, what is the length of each of its sides

Answers

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I think It must be 1,728.

So :

[tex] \sqrt[3]{1728} = 12[/tex]

Thus each of its sides has a length of 12 inch.

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lan has $6,000. He wants to buy a car within $1,500 of this
amount. What is the price range of the car he wants to
purchase?
f. x2 $4,500 or x 2 $7,500 g. $4,500 2 x 2 $7,500
h. x < $4,500 or x = $7,500 j. $4,500 < x < $7,500

Answers

Answer: $7,500

Step-by-step explanation:

12x + k = c solve for x Explain how to do it please

Answers

Answer: x=(c-k)/12

Step-by-step explanation:

So you're trying to find x, and in order to do that, you need x by itself. First, move k to the right side by subtracting k from both sides to get 12x=c-k. After that, you divide 12 for both sides to get x=(c-k)/12. It looks like this: [tex]\frac{c-k}{12}[/tex]

x=c-k/12
ndjdksk sorry i needed more characters


Write in index form using powers of 10
1

Answers

Answer:

In standard index form a number is written firstly with a sign (if negative) followed ... by a power1 of 10. Powers of 10. Non-negative powers of 10. 100. 1. 101. 10.

Step-by-step explanation:i hope it helps

Write a linear equation with a slope of 14 and y-intercept -12.

Answers

Answer:

y=14x-12

Step-by-step explanation:

in the standard format y=mx+b, m is the slope and b is the y-intercept, so this equation would be y=14x-12 since the slope is 14 and the y-intercept is -12.

find solution and show work for: (3.4^17)4

Answers

Answer:

231.2

Step-by-step explanation:

first multiply 34 and 17 which will give you 578. Then put the decimal after the 7 because you only have one decimal in the tenths place: 57.8. Then multiply 578 by 4: 2312. Then put the decimal after the 1 to get 231.2

Gracy is selling picture frames and wants to compute the areas of each of the frames that she sells one of the frames measure 1/2 foot wide and 3.8 feet long.what is the area of this size of piture frame
The answer choice is
A 1.9 square feet
B 3.3 square feet
C 4.3 square feet
D 7.6 square feet
Plz help

Answers

Answer:a

Step-by-step explanation:

Answer:

a

cause that is the right answer had that quiz

-21w + 5 + 3w -1 pls anwser

Answers

Answer:

-18w +4

Step-by-step explanation:

-21w + 5 + 3w -1

Combine like terms

-21w +3w   +5-1

-18w +4

Triangle PQR has side lengths 6 cm, 7 cm, and 11 cm. A
triangle with what side lengths would be similar to
triangle PQR?

Select one:
1) 24 cm, 28 cm, 44 cm
2) 3 cm, 5 cm, 9 cm
3) 7 cm, 8 cm, 12cm
4) 24 cm, 21 cm, 33 cm

Answers

Answer: the correct answer is 3

The side lengths similar to triangle PQR are 24 cm, 28 cm, 44 cm

What are similar triangles?

Two triangles are similar if they have the same ratio of corresponding sides and equal pair of corresponding angles.

Given that, a triangle PQR with side lengths 6 cm, 7 cm, and 11 cm.

Considering option 1) 24 cm, 28 cm, 44 cm

To see the similarity, we will check if the ratio of the corresponding sides are equal or not,

6/24 = 1/4

7/28 = 1/4

11/44 = 1/4

That means, 6/24 = 7/28 = 11/44 = 1/4

Since, the corresponding sides of these triangles are in equal ratios,

Hence, The side lengths similar to triangle PQR are 24 cm, 28 cm, 44 cm

For more references on similar triangles, click;

https://brainly.com/question/25882965

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What is the value of x???

Answers

Answer:

x = 136

Step-by-step explanation:

The two angles are vertical angles and vertical angles are equal

x = 136

Answer:

x=13

Step-by-step explanation:

The two angles are vertical angles and vertical angles are equal  

x = 136

plss i need help for this question real fast ?(10-(-9)*-1) plss real quick!!!!​

Answers

Answer:

1

Step-by-step explanation:

(10-(-9)*-1)

Remember that 2 negative equal a positive. So -(-9) is positive.

(10+9*-1)

Then, PEMDAS is how you should finish this.

So, 9*-1 is -9

Then, 10-9 is 1

At the San Diego zoo you can either pay $22.75 for the entrance fee or $71 for the yearly pass which entitles you to unlimited admission. At most how many times can you enter the zoo for the $22.75 entrance fee before spending more than the cost of a yearly membership? Write and solve an inequality

Answers

Answer:

3

Step-by-step explanation:

3x22.75=68.25 or less than the yearly pass

what is 2 1/2 ÷ 1/3​

Answers

Answer:

15/2

or 7.5

or 7 1/2

Step-by-step explanation:

Dividing two fractions is the same as multiplying the first fraction by the reciprocal of the second fraction. The first step to dividing fractions is to find the reciprocal (reverse the numerator and denominator) of the second fraction. Next, multiply the two numerators. Then, multiply the two denominators.

Answer:

Exact Form:

15/2

Decimal Form:

7.5

Simplified:

7 1/2

Step-by-step explanation:

Alex and Carmen both sell items at craft fairs. Alex earns $36 for 3 birdhouses, and Carmen earns $75 for 5 scarves. What is the unit rate that each person earns for their craft? How many birdhouses will Alex need to sell in order to make as much as Carmen does when she sells 12 scarves? How do you know?

Answers

Answer:

To be able to find the unit rate that each person earns for their craft, you have to divide the amount each person earns by the number of units:

Alex: $36/3=$12 per unit

Carmen: $75/5=$15 per unit

To find the amount of birdhouses that Alex will need to sell in order to make as much as Carmen does when she sells 12 scarves, first you have to determine the amount that Carmen earns when she sells 12 scarves:

$15*12=$180

Now, you need to divide $180 by the price per unit Alex earns to find the amount of birdhouses that he needs to sell:

$180/$12=15

This means that Alex needs to sell 15 birdhouses to make as much as Carmen does when she sells 12 scarves

if y=198 when x=22, find y when x=182.

Answers

Answer:                

y = 1638      

Hope that helps

Find the equation of the line from the following graph in slope-intercept form:
A) y = 3/2x + 2
B) y = -3/2x + 2
C) y = -2/3x + 2
D) y = 2/3x + 2

Answers

Answer: the slope is -3/2x and B is the only one that SLOPE

Step-by-step explanation:

RISE/RUN

IT WENT UP 3 AND WENT 2 TO THE LEFT

BTW: TO THE LEFT IS NEG AND POS IT TO THE RIGHT

so the slope is a neg be it is going toe the up towards left

please answer asap !!
What is the zero of f?
(15 points!)

Answers

The zero is x = 3, since that is where it crosses the x-axis

Ten times a number, x, is one-half the sum of the number and three.

Which answer represents this situation?

10x=12(x+3)

10x+12x+3

10x=12x+3

10x+12(x+3)

Answers

Answer:

10x=1/2(x+3)

If you substitute numbers and characters in for words you would get this equation.

Daniel has 3 sets of colored pencils. Each set has 6 pencils. How many pencils does Daniel have in all? Model this by drawing base - 10 blocks.

Answers

Answer: 18

Step-by-step explanation:

if he has 3 sets of pencils and there are 6 pencils in each set then you would do 6 x 3 = 18 or 6 + 6 + 6 = 18 To solve it

Evaluate. Write your answer as a fraction in simplest form.

(-2/3)^{2}−3/4(2 1/3)

Answers

Answer:

-47

____

36

Step-by-step explanation:

9. During training, a hurdler wants to raise the height of the hurdles from the high school standard of 39 inches to the
NCAA standard of 42 inches. His best race from last season included a clear over a 39-inch hurdle that was modeled by
h(t) = (-0.0251)(1-25), where t is time (in tenths of a second) after his lead leg left the track and h is the height (in feet).
If he runs as well as his best race last year, will this hurdler clear the new height? Why or why not

Answers

Answer:

Something doesn't make sense. The time when his height is 0 is time t=0 and t=25.

The vertex would be halfway in between at time t=(0+25)/2 = 12.5 seconds.

But plugging that in, we get a height of:

3.90625 inches

I think you must have a typo... let's try this equation instead:

h(t) = (-0.25t)(t - 25)

In that case, the maximum at h(12.5) is 39.0625 inches.

Answer:

No, the function for his height has him just barely clearing 39 inches. He can't clear 42 inches.

10

No, according to the function for his height, he only just clears 39 inches. He is unable to jump 42 inches.


What is an expression?

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Something doesn't make sense. The time when his height is 0 is time t=0 and t=25.

The vertex would be halfway in between at time t=(0+25)/2 = 12.5 seconds.

But plugging that in, we get a height of:

3.90625 inches

h(t) = (-0.25t)(t - 25)

In that case, the maximum at h(12.5) is 39.0625 inches.

Therefore, the according to the function for his height, he only just clears 39 inches. He is unable to jump 42 inches.

To know more about an expression follow

https://brainly.com/question/21528962

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each morning darnell does a combination of aerobics and stretching exercises. the exercises burn different amounts of calories per minute. the following system represents the time darnell exercises and the amount of calories burned. in the system, x represents the number of minutes darnell spends doing aerobics and y represents the number of minutes he spends stretching

x+y=60
15x+5y=500

Answers

Answer:

x=34

Step-by-step explanation:

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