Mathematics College

PLEASEEEE HELP!!!The function y=15(0.84)^x models the amount y of a 15mg dose of
antibiotic remaining in the bloodstream after x hours. How much remains
after 8 hours? *
A)7.52mg
B)3.25mg
C)5.63mg
D)03.72mg

PLEASEEEE HELP!!!The Function Y=15(0.84)^x Models The Amount Y Of A 15mg Dose Ofantibiotic Remaining

Answers

Answer 1

Answer:

3.72

Step-by-step explanation:

y=15(0.84)^8

15*0.84

12.6*8

y=3.72

Answer 2

Answer:

3.72

Step-by-step explanation:

:)

Related Questions

-5/2a+5=25 what does a equal

Answers

Answer:

-8

Step-by-step explanation:

Lines of latitude, also called parallels, do what?

Answers

Answer: Lines of latitude (parallels) run east-west around the globe and are used to measure distances NORTH and SOUTH of the equator.

Step-by-step explanation:

Step-by-step explanation:

yeah what guy below me or above me said

If you could change the instrument you play would you or wouldn't you? Tell me why.



PLZ ANSWER I'LL GIVE BRAINLIEST!

Answers

Answer:

No, because i wouldn't know how to play it, and you'd get frustrated because you cant play it

Step-by-step explanation:

Answer:

yes because i'm not very good at it. the other instrument i have started to play

A recipe needs 3/4 cups of sugar to make 24 cookies.How much will be needed to make 36 cookies?

Answers

Answer:

Step-by-step explanation:

36 cookies = 1.5 times 24 cookies. therefore 1.5 times ¾ c of sugar will be required. Total sugar needed for 36 cookies is 9/8 c or 1.125 c.

A recipe calls for 1 cup of sugar and 5 cups of water how many sugar is used per cup of water

Answers

Answer: 0.2

Step-by-step explanation: 1 divided by 5 = 0.2

another way to think of this is 5 x 2 = 10 = 5 x 0.2 = 1

Answer: 0.2

Step-by-step explanation: 1 divided by 5 = 0.2

5 x 2 = 10  5 x 0.2 = 1

simplify
3/4 - 4x + 1/2x - 1/2 + 1/2x

Answers

Answer:

x=4

Step-by-step explanation:

Answer:

1/4 - 3x

Step-by-step explanation:

Combine like terms

-4x + 1/2x + 1/2x = -3x

3/4 - 1/2 = 1/4

Now put it together

1/4 - 3x

Write an expression that represents the
difference between the areas of the two
shapes.
A= 3x + 3
A = 2x + 6

Answers

Answer: x-3

Step-by-step explanation:

3x+3-(2x+6)

= 3x+3-2x-6

3x-2x+3-6

x+3—6

Answer=  x-3

help me! :( will appreciate any type of help

Answers

Answer:32

Step-by-step explanation: (2+3x)= 98 then solve

What is the product? 2x+8 x2 + 3x-4 x(x-4)(x-1) 20x+4) 2 (x+4)(x-4) 2x(x-1) 2x(x+4)​

Answers

=−640x10+1280x9+19904x8−40728x7−144488x6+323904x5−162304x4+1024x3+2048x2

step by step

(2x+8x2+3x−4x(x−4)(x−1)(20)x+4)(2)(x+4)(x−4)(2)x(x−1)(2)x(x+4)

=((2x+8x2+3x−4x(x−4)(x−1)(20)x+4)(2)(x+4)(x−4)(2)x(x−1)(2)x)(x+4)

=((2x+8x2+3x−4x(x−4)(x−1)(20)x+4)(2)(x+4)(x−4)(2)x(x−1)(2)x)(x)+((2x+8x2+3x−4x(x−4)(x−1)(20)x+4)(2)(x+4)(x−4)(2)x(x−1)(2)x)(4)

=−640x10+3840x9+4544x8−58904x7+91128x6−40608x5+128x4+512x3−2560x9+15360x8+18176x7−235616x6+364512x5−162432x4+512x3+2048x2

=−640x10+1280x9+19904x8−40728x7−144488x6+323904x5−162304x4+1024x3+2048x2

The product is the same as the answer

An object is moving at a speed of 230 feet per week. Express this speed in inches per
minute. Round your answer to the nearest hundredth.

Answers

Answer:

Step-by-step explanation:

0.27 inches per minute....

An object is moving at a speed of 230 feet per week. This speed in inches per minute will be 0.27.

We know ,

     1 feet = 12 inches and

     1 week= 7days = 24×7 hours = 24×7×60 min.

                                                    = 10080 min.

Now, we just need to be careful with our multiplication and division. So we are going to have 230 times 12 on top divided by 24 times 7 times 60 i.e., 10,080 on bottom.

230 feet per week in inches per min = 230×12/10,080.

After evaluating and rounding up to 2 decimal places or the hundredth place , we will get our answer i.e., 0.27 inches/min.

To learn more about speed in inches per minute

visit: https://brainly.com/question/7282361

#SPJ1

Using the algebraic expression 4n + 6, what is the greatest whole-number value that will give you a result less than 100?

Answers

Answer:

23

Step-by-step explanation:

Allow 4n+6=100

∴4n=94

∴n=23.5

If 23.5 gives you 100 exactly, the greatest whole number that'll give you a result less than 100 is 23.

Options
-0
- negative
- undefined
- positive

Answers

Answer:

Positive

Step-by-step explanation:

the line isn’t in the negative side (going towards the right) so it’s positive

Two stores are having a donut sale. Donald's Donut Shop is selling 10 donuts for $9.00. Sunrise donut company is selling 8 donuts for $7.00.

a. How much does a donut cost at Donald?


b. How much does a donut cost at Sunrise?


c. Who has the better deal on donuts?​

Answers

Answer:

A. A donut cost 0.9 at donalds shop

B.a donut cost 0.875 at sunrise

C.the better deal is Sunrise

Step-by-step explanation:

A) x=5
B) x= 4
C) x= -1.5
D) x= -2

Answers

Answer:

x=-1.5

Step-by-step explanation:

Answer:

B) X=4

Step-by-step explanation:

Since opposite sides of a rectangle are equal that means line AD and line BC are equal to eachother

8x-12=20

+12     +12

8x=32

/8     /8

x=4

Angie completes 80% of her homework problems before basketball practice. She was assigned 30 problems total. How many problems were completed before basketball practice?
23
24
25
26

Answers

Answer:

24 questions

Step-by-step explanation:

you would make the percentage a decimal and times that by how many problems.

Answer:

24 problems

Step-by-step explanation:

I like to do it like this: I find out what 10 percent is, so I divide it by 10. 30/10=3. 10 percent plus 10 percent is 20 percent. That's 6. 100 percent minus 20 is 80 percent. 30 - 6 is 24. Hope this helps.

At a school, 40% of the sixth-grade students said that hip-hop is their favorite kind of music. If there are 275 sixth-grade students at the school, how many sixth-grade students prefer hip hop music?

Answers

Answer:

Around 80 students

Step by step explaining:

My big brain

Lin rode a bike 20 miles in 150 minutes at a constant
speed.

Answers

Answer:

7.5 miles per minute

Step-by-step explanation:

Sawyer and Emily is so much fun

(2/3x + 2) - (1/3x - 4 )

Answers

The answer to your question would be: 1/3 x + 6

The claim is that the standard deviation of the speeds of drivers in Bradford is 8 mph. An experienced driver feels that this is very low. If a random speed check is conducted for 50 drivers, the standard deviation is 10.5 mph. Can we reject the null at

Answers

Answer:

Null hypothesis is rejected. Standard deviation is > 8 miles per hour

Step-by-step explanation:

σ [Population standard deviation] = 8 , s [sample standard deviation] = s

n [no of items] = 8

H0 [Null] : σ = 8 ; H1 [Alternate - Right Tail] : σ > 8

χ2 = (n - 1) . s^2 / σ^2

= 49 x (10.5)^2 / 82 = 5402.25 / 64

χ2 = 84.410

df [degree of freedom] = n -1 = 50 - 1 = 49

P value (χ^2 49 > 84.410) = 0.00125

p = 0.0013

p < α ie 0.05

So, H0 is rejected

Hence we state that standard deviation is > 8 miles per hpur

Ken has an investment account which compounds interest continuously at a rate of 3.4%. After 4 years, he has $4400 in the account. How much money did he initially place in the account? Round your answer to the nearest dollar. Do NOT round until you have calculated the final answer.

Answers

Answer:

$6617

Step-by-step explanation:

Use the formula for calculating compound interest A=P0ert where A is the unknown, P0=4400, r=0.034, and t=12. Substitute the values into the formula and simplify.

A=4400e0.034⋅12

A=4400e0.408

A=4400(1.503...)

A=6616.75

After 12 years, there will be A≈6617 in the account, rounded to the nearest dollar.

Answer:

$3841

Solve the formula for calculating compound interest

a=Pe rt for

Theo vegetable garden

Answers

Answer:

The area of the garden is 1600

Step-by-step explanation:

BTW your answer is incomplete but if your are asking Theo's vegetable garden has an area of 40 square feet. what is the area, in square feet, of the pat of the garden that is planted with carrots? Then it is 1600! Plz Mark Brainliest Thanks!

3/45/6 simply this complex fraction

Answers

Answer:

1/15/2

Step-by-step explanation:

Divide all the numbers by 3 (the lowest common denominator)

Answer:

90

Step-by-step explanation:

3/45×1/6=3/270=90

Which of the following are valid names for the given triangle? Check all that
apply.

Answers

Answer:

B, E and F hope this is correct

The sum of two numbers is 18. Two less than four times the smaller number is equal to the larger number x. Find the larger number. (Enter an exact number.)

Answers

Answer:

14

Step-by-step explanation:

x+y=18

x is the larger number

4y-2=x

(4y-2)+y=18

5y-2=18

y=4

18-4=14

the larger number is 14

What is the answer for
(3/4)(3/5)=​

Answers

Answer:

9/20 or 0.45

Step-by-step explanation:

we multiply them

3×3/4×5

9/20

or 0.45

9/20 in fraction form or 0.45 in decimal form :))

(9a^2 + 7a + 8) - (2a^2 + 5a + 1)

Answers

Answer:  7a^2+2a+7

Step-by-step explanation:Distribute the Negative Sign:

=9a2+7a+8+−1(2a2+5a+1)

=9a2+7a+8+−1(2a2)+−1(5a)+(−1)(1)

=9a2+7a+8+−2a2+−5a+−1

Combine Like Terms:

=9a2+7a+8+−2a2+−5a+−1

=(9a2+−2a2)+(7a+−5a)+(8+−1)

=7a2+2a+7

Answer C, D Please help will give brainliest.

Answers

Answer:

I am not sure what to do you have any pictures

Step-by-step explanation:

2400 people attended a football game. 1728 of the people attending supported the home team, while 672 supported the visiting team. What percentage of people attending supported the home team?

Answers

Answer:

Percentage= 72%

Step-by-step explanation:

Giving the following information:

Total population= 2,400

People supporting the local team= 1,728

To calculate the percentage of people supporting the local team, we need to use the following formula:

Percentage= (people supporting / total population)*100

Percentage= (1,728/2,400)*100

Percentage= 72%

A teacher will select 7 students in a class of 10 to participate in a social experiment. How many different groups are possible?

Answers

Answer:

the answer is 7/10=0.70

Answer:

7 gropus thats how manh

Help !!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

D. No function.

Step-by-step explanation:

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