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3 years ago

Please help i need help with this answer please answer i will give brainliest

Mathematics

1 answer:

Studentka2010 [4]3 years ago

4 0

Answer:

number 2

Step-by-step explanation:

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Error bars on four different data points are shown below.

Verdich [7]

I think it is point 3. Hope that helps

7 0

3 years ago

Read 2 more answers

Which statement describes a process to solve sqrt b+20 - sqrt b=5?

babunello [35]

Answer:

Step-by-step explanation:

The equation is:

√b+20 - √b = 5

The first step is we will add √b to both sides:

√b+20 -√b +√b = 5 +√b

√b+20 = 5+√b

Now take square at both sides:

(√b+20)^2 = (5+√b)^2

b+20 = 25+10√b+b

Now combine the like terms:

b+20-25-b=10√b

-5 = 10√b

Divide both the terms by 10

-5/10 = 10√b/10

-1/2=√b

Take square at both sides:

(-1/2)^2 = (√b)^2

1/4 = b

So in this type of question we add radical terms to both sides and square both sides twice....

7 0

3 years ago

write an exponential formula of the form f (t)= a×b^t to represent the following situation. assume t is in years. The beginning

nika2105 [10]

Answer:

$f(t)= 27000 * 0.965^t$

Step-by-step explanation:

Given

$a = 27000$ -- initial

$r = 3.5\%$

Required

The exponential equation

The exponential equation is

$y =ab^t$

Where

$b=1 -r$

We used minus, because the rate decreases..

So, we have:

$b=1 -3.5\%$

$b=1 -0.035$

$b=0.965$

So:

$y =ab^t$

$y = 27000 * 0.965^t$

Hence:

$f(t)= 27000 * 0.965^t$

5 0

3 years ago

How to find the max area that a 880 foot fence can enclose?

Nataliya [291]

To find the max area you would use length times width times height

6 0

4 years ago

Due to inflation, the price of an item increased by 45% and then dropped by 20%. By what percent did the price increase?

Marysya12 [62]

<u>Answer</u>:

Percentage of increase = 16%

===============================================

<u>Step-by-step explanation:</u>

Let the price of an item ⇒ x

When the price of the item increased by 45%, the price will be ⇒ 1.45 x

Then dropped by 20%

So, the final price will be ⇒ (1 - 0.2) * 1.45x = 0.8 * 1.45 x = 1.16 x

By comparing between the original price and the final price

The difference = 1.16 x - x = 0.16x

Percentage of increase = $\frac{1.16x}{x} *100=16$ %

8 0

3 years ago