All categories

3 years ago

-3b-75=0 I need 2 solutions

Mathematics

1 answer:

stich3 [128]3 years ago

6 0

Answer:

-25

Step-by-step explanation:

-3b-75=0

+75 +75

-3b=75

/-3 /-3

b=-25

There isn't 2 solutions

---

hope it helps

You might be interested in

7/12 fractions that is equivalent to 2/4

zhenek [66]

Answer:

Step-by-step explanation:

So we multiply 7 by 4, and get 28. Then we multiply 2 by 12, and get 24. Next we give both terms new denominators 12 × 4 = 48.

6 0

3 years ago

Of the customers who enter a store for stereo speakers, only 24% make purchases. if 38 customers enter the showroom tomorrow, fi

notsponge [240]

24% of 38 = (1 - 24/100) × 38 = 28,88 = 29

24 % ←→ 29
x% ←→ 10

x = 10 × 24 ÷ 29
x = 8,27586
x = 8 %

ANSWER 8%

6 0

3 years ago

What is the unit rate of $25 and 6 hours

docker41 [41]

Answer:

It's about $4.17

Step-by-step explanation:

Just 25 divided by 6.

Hope this helps!!!

Can u mark brainliest pls?

Im Brooke

14 yrs old

8 0

4 years ago

A radioactive substance is decaying exponentially. If there are initially 15 grams of the substance and after 3 hours there are

sukhopar [10]

Answer:

Ok, an exponential decay is written as:

P(t) = A*(1 - r)^t

Where A is the initial population, r is the rate of decay and t is the unit of time.

We know that the initial population is 15g

then:

P(t) = 15g*(1 - r)^t

And at t = 3hs, the populations is 5g

P(5h) = 5g = 15g*(1 - r)^5

5/15 = 1/3 = (1 - r)^5

(1/3)^(1/5) = (1 - r) = 0.8

Now, the half life time of the sustance is t = x, such that the population reduces to it's half:

P(x) = A/2 = 15g/2 = 7.5g

Then:

7.5g = 15g*0.8^x

7.5g/15g = 1/2 = 0.8^x

Now, remember that if we have:

a = b^x

then

x = ln(a)/ln(b)

ln(1/2)/ln(0.8) = x = 3,11 hours

3 0

3 years ago

Tell me numbersin order

Paul [167]

Part 1:-

cost to park of a day is= $25+$43+$61+$79 =$208

and the hourly rate to a paddle boat =208÷24=$8.6 per hour

______________________

<h3>What will Lin pay if she rents a paddleboat for 3.5 hours and splits the total cost with a friend? Completethe explanation.</h3>

The total cost to rent the boat will be

3.5 hours x $ 12 per hour + $ 5 =$47

if she spilt cost with a friend ,they will each pay$47 ÷ 2= $ 23.5

7 0

3 years ago