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Volgvan
3 years ago
6

Please help me!

Mathematics
2 answers:
soldi70 [24.7K]3 years ago
6 0

Answer:

-1.20

Step-by-step explanation:

You are correct because you just had to subtract 2.50 - 3.75 and you get -1.20.

kotegsom [21]3 years ago
6 0

Answer:

-1.25 feet below surface level.

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PLEASE HELP<br> Solve. x^2+9x+2=0
Nataliya [291]

Answer:

x = (1/2) (-9 ± √73)

Step-by-step explanation:

Using completing the square method

x²+9x+2=0

x²+9x = -2   (complete the square by adding (9/2)² to both sides)

x²+9x + (9/2)² = -2 + (9/2)²

( x + (9/2) )² = -2+ (9/2)²

( x + (9/2) )² = -2+ (81/4)

( x + (9/2) )² = 73/4

x + (9/2)  = ± √(73/4)

x + (9/2)  = ± √(73) / 2

x = -(9/2) ± √(73) / 2  (factorize out (1/2) )

x = (1/2) (-9 ± √73)

8 0
3 years ago
Without further study, you forget things as time passes. A model of human memory gives the percentage, p, of acquired knowledge
PIT_PIT [208]

Answer:

42.69% of information is acquired by the student in two weeks.

Step-by-step explanation:

We are given the following in the question:

p = (100 -a)e^{-bt} + a

where a and b are constants.

a = 18\\b = 0.6

p tells us about the percentage of acquired knowledge that a person retains after t weeks.

We have to find the percentage of knowledge acquired in two week.

We put t = 2

p = (100 -18)e^{-(0.6)(2)} + 18\\p = 42.69

Thus, 42.69% of information is acquired by the student in two weeks.

5 0
3 years ago
BRAINLIST AND 100 POINTS!!! PLEASE HELP!!
luda_lava [24]

Answer:

a.) d,c and a,b

Step-by-step explanation:

hope it helped

8 0
3 years ago
choose the method of pay that would result in the most earnings for one month on sales of $40,000. a. straight commission of 7.5
Brums [2.3K]
The correct answer is a.
3 0
3 years ago
Read 2 more answers
helpppp! The population of a town is 20,000 people in the year 2000. How many people with live in the town in 2016 if the popula
Brut [27]

Answer:

31877 people with live in the town in 2016 if the population increases at a rate of 6% every 2 years

Step-by-step explanation:

The formula used will be

A(t) = P(1+r)^t

A(t) = Future value

P = population

r = rate

t = time

P= 20,000

r =6% or 0.06

t = 16

Since population is increased every 2 years, so t = 16/2 = 8

Putting value:

A(16) = 20,000(1+0.06)^8

A(16)= 20,000(1.06)^8

A(16) = 31876.9 ≈ 31877

So, 31877 people with live in the town in 2016 if the population increases at a rate of 6% every 2 years

5 0
3 years ago
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