1. By what factor did the medicine decrease in the first hour and a half? Explain how you know.

Answers

Answer 1

Answer:

4/9

Step-by-step explanation:

At t = 0 ; volume = 270

At t = 1.5 ; volume = 80

y = P(1 - r)^t

y =ab^x (exponential)

a = initial amout at t = 0

y = final amount

t = 1.5

80 = 270b^t

80/270 = b^t

8/27 = b^1.5

8/27 = b^3/2

b^3/2*2/3 = (8/27)^2/3

Cube root of 8/27 = 2/3

Square of 2/3 = (2/3)^2 = 4/9

1. By What Factor Did The Medicine Decrease In The First Hour And A Half? Explain How You Know.

Related Questions

The a question is attached below

Answers

Answer:

22.2m

Step-by-step explanation:

vol of a sphere = 4/3 x pi x r^3

vol of a hemisphere is 1/2 the vol of a sphere, so vol of a hemisphere= 2/3 x pi x r^3

2/3pi x r^3 = 257

Divide both sides by 2/3pi

r^3 = 122.708

Cube root both sides.

r = 11.077

Diameter is twice the radius, so diameter = 22.154m

To the nearest 10th of a meter this is 22.2m.

Hope I helped x

xxxxxxxxxxxxxxcccccccc

Answers

Answer:

12 and 9

Step-by-step explanation:

what is the equation of the trend line in the scatter plot ? HELP ME HURRY ILL MARK BRAINLIEST

Answers

Answer:

[tex] y = \frac{3}{7} x + 3 [/tex]

Step-by-step explanation:

Line is passing through the points (0, 3) and (7, 6)

So, y-intercept (b) = 3

Slope of the line (m) = (6 - 3)/(7 - 0) = 3/7

Equation of line in slope-intercept form is given as :

y = mx + b

Plugging the values of m and b in the above equation, we find:

[tex]y = \frac{3}{7} x + 3 \\ [/tex]

List six consecutive multiples of five that are decreasing

Answers

Answer:

30, 25, 20, 15, 10, 5

Hope this helps :)

factor:
9u^2+12uv+4v^2

Answers

Answer:

(3u+2v)^2

Step-by-step explanation:

Can anyone help me with decimal numbers (year 6, 6th grade) ? The thing that i need help with is decimal numbers on number line​

Answers

Answer:

I can help you!

Step-by-step explanation:

I'm pretty good at math and I've gotten all As this year so

Jan's pays a monthly fee, ​f​, for a gym membership. Complete the equation to represent the cost, ​c​, of Jan's gym membership for 12 months?

Answers

The answer is f for a gym membership

I need help I'm confused

Answers

(4x+27) = (16x-21)
12x = 6
so x = 2
then you just add the 2 into where the x is placed

Whats the answer to this?

Answers

Step-by-step explanation:

area of figure = 5x² + 3

plz mark my answer as brainlist plzzzz.hope this will be helpful to you if you find it useful ☺️

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Answers

Answer:

D

Step-by-step explanation:

If you figure out the median you'll see that for 8th grafe its 21 and 7th 25 therefore 4 points higher

What is the value of the expression
-8 + 14?

Answers

What the other person said

If the surface area of a cube is 384 square inches, what is the length of each side

Answers

Answer:

There are six equal surfaces of a cube. Then,

384 / 6 = 64 sq in (the area of one surface)

The area of one surface of a cube will be equal to x*x (if we let the edge length be x)

x^2 = 64

x = 8 inch

Step-by-step explanation:

you are evenly dividing up 57 apples among 5 friends

Answers

Answer:

11.4 have a great day :)

Step-by-step explanation:

Answer:

This cannot be true.

Step-by-step explanation:

You cannot divide 57 evenly among 5 because 57 is not a multiple of five therefore 57 can't be divided by 5.

Find h. 11 in. h = [?] in. 1 1 1 14 in. Enter​

Answers

Answer:

You know that the Pythagorean Theorem is:

a²+b²=c²

,

Where:

a

is the length of one of the legs,

b

is the length of the other leg, and

c

is the length of the hypotenuse.

You know the lengths of the two legs are

7 and 11

, so we'll say that

a is 7 , and b is 11

Knowing that, we can plug those into our equation and simplify like so:

7²+11²=c²

49+121=c²

170=c²

√170=c

c=13.0384

Answer:

√72

Step-by-step explanation:

Use Pythagorean:

h² + (14/2)² = 11²h² + 49 = 121h² = 121 - 49h² = 72h = √72 in

Find an equation for the nth term of the arithmetic sequence.

30 POINTS!!!
Find an equation for the nth term of the arithmetic sequence.
a19 = -92, a20 = 6

A an = -1856 + 98(n - 1)
B an = -1856 - 98(n - 1)
C an = -1856 - 98(n + 1)
D an = -1856 + 98(n + 1)

Answers

Answer:

I think it is C

Step-by-step explanation:

The answer to this question is C

please help, algebra two problem

Answers

Answer: -12

Step-by-step explanation:

What decimal is equivalent to 13/20?

Answers

Answer: 0.65

13/20 as a decimal is 0.65.

0.65 is equivalent to 13/20

Two glasses of milk and 3 snack bars have a total of 67 carbohydrates​ (carbs), and 4 glasses of milk and 2 snack bars have a total of 47 carbs. Determine how many carbs are in one glass of milk and in one snack bar.

Answers

Answer: there are 11 calories in one glass of milk and 14 calories in one snack bar.

Step-by-step explanation:

Take milk to to be M and snack bars to be S.

Use algebra, so

2m + 3s = 64 and also

4m + 2s = 72

Multiply the top equation by 2 so both have 4m, so

4m + 6s = 128 and also

4m + 2s = 72

Then minus the numbers form the top equation by the bottom equation, so

4m + 6s = 128

- - -

4m + 2s = 72

This gives you 4s=56 so divide by 4 so s=14

No put 14 into the equation for s and rearrange to solve for m, so

2m+3s=64 So

2m+3x14=64

2m+42=64

Then minus 42

2m=22

m=11

help me please! it would help so much! ill mark you brainliest if you're correct :)

Answers

Answer:

Chinese people live in harmony with nature.

I hope it helped!

find the area of the arrow below

Answers

Answer:

36

Step-by-step explanation:

Because the box is a 4x5 so that's 20 and then the triangle is a 8x4 so 32 divided by 2 is 16 and finally 16 + 20 is 36

36 feet squared purrrriodr

What is the factored form of x^2+4x-12=0

Answers

Answer:

if this is what you looking for

= 2

x = − 6

6Step-by-step explanation:

PLEASE HELP!! A circle is divided into three central angles that have measures in the ratio 2:13:15. find the measure of the largest angle.

Answers

Answer:

First angle = 24'

Second angle = 156'

Third angle = 180'

Step-by-step explanation:

Given:

Ratio of circles angle = 2:13:15

Find:

All three angle

Computation:

Sum of all angle from center = 360'

So,

First angle = 360[2/(2+13+15)]

First angle = 360[2/(30)]

First angle = 24'

Second angle = 360[13/(2+13+15)]

Second angle = 360[13/(30)]

Second angle = 156'

Third angle = 360[15/(2+13+15)]

Third angle = 360[15/(30)]

Third angle = 180'

 WHO KNOWS FUNCTIONS AND ALL THAT PLZZZ HELP ME ASAP I REALLY NEED IT PLZZ

Answers

the last set because a function can’t have the same two x values

I need help with this question can someone help

Answers

Answer:

c = 72

a = 51

b = 57

x = 28

Step-by-step explanation:

2x+1 + 2x-5 = 108

4x -4 = 108

4x = 112

x = 28

(2(28)-5)= 51

(2(28)+1) = 57

1 picture 2 questions please and thank you

Answers

Answer:1) 1661

Step-by-step explanation:23x23 =529, 529xpi=1661

Answer:

Step-by-step explanation:

what is the value of the expression when s=2 and t=1.5 -3|5-s3|+3t​

Answers

Answer:

-4.5

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

|Absolute Value| - makes any negative number positive

Step-by-step explanation:

Step 1: Define

-3|5 - s³| + 3t

s = 2

t = 1.5

Step 2: Evaluate

Substitute in variables:                                                                                     -3|5 - 2³| + 3(1.5)|Absolute Value| Exponents:                                                                            -3|5 - 8| + 3(1.5)|Absolute Value| Subtract:                                                                               -3|-3| + 3(1.5)Absolute Value:                                                                                                -3(3) + 3(1.5)Multiply:                                                                                                             -9 + 4.5Add:                                                                                                                   -4.5

Find the output, ddd, when the input, ttt, is 111111. d =-20+11td=−20+11td, equals, minus, 20, plus, 11, t d=d=d, equals

Answers

Answer:

d=101

Step-by-step explanation:

If 11 is being multiplied by t, and t is 11, we multiply 11 by 11, we get 121.

After adding that to our equation, we get -20 + 121, which equals 101.

Therefore d=101

The value of d, when t = 11 is equal to 141.

What is a function?

An expression in mathematics defines a relationship between one variable (the independent variable, x)  and another variable (the dependent variable, y). For example -

f(x) = 4x + 6

Given is the following equation -

d = - 20 + 11t

We have -

d = - 20 + 11t

for t = 11, we get -

d = 20 + 11 x 11

d = 20 + 121

d = 141

Therefore, the value of d, when t = 11 is equal to 141.

To solve more questions on functions, visit the link below -

brainly.com/question/26182329

#SPJ5

Derrick wants to calculate the interest he would earn from investing $400 into an account that earns 5.5% annual compound interest for 60 months. Which of the following formulas is set up correctly to help him do this?

Answers

Answer:

c

Step-by-step explanation:

The formula that should be set up correctly to help him do this should be considered as the [tex]400(1 + 5.5\%)^{60}[/tex]

Calculation of the formula:

Since

the invested amount is $400

The annual compound interest is 5.5%

And, the number of months should be 60

So here the formula that should be used should be [tex]400(1 + 5.5\%)^{60}[/tex]

Hence, The formula that should be set up correctly to help him do this should be considered as the [tex]400(1 + 5.5\%)^{60}[/tex]

Learn more about interest rate here: https://brainly.com/question/14191952

Subtract right answers please

Answers

Answer: 11 - (-12) = 23

              -22 - 49 = -71

Answer:

23

-71

Step-by-step explanation:

11 - (-12) = ?

-22 - 49 = ?

11 - ( -12) = 11 + 12 = 23

-22 - 49

subtracting a negative from a negative is like adding a positive to a positive it has the same affect just a different sign

-22 - 49 = -(22 + 49)

22 + 49 = 71

-(71) = -71

ABCD is a rhombus. If AB = 2x + 12 , AC = 7x - 3, ∠=12°, and ∠= (4y - 1)°.

CD = __ .

Answers

Answer:

Step-by-step explanation:

ABCD is a rhombus. If AB = 2x + 12 , AC = 7x - 3, ∠=12°, and ∠= (4y - 1)°.

CD = __ .

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