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3 years ago

-2 -1 1 2 pls help!!!

Mathematics

2 answers:

Lostsunrise [7]3 years ago

6 0

Step-by-step explanation:

5^(3b−1) = 5^(b−3)

Since the bases are equal, the exponents must also be equal.

3b − 1 = b − 3

2b = -2

b = -1

Y_Kistochka [10]3 years ago

4 0

I’m sure it is -2
I had the same question

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Cody started a fire in a field. The fire was expanding outward in all directions forming a larger and larger circle. The radius

Dimas [21]

Answer:

Step-by-step explanation:

This problem is on the mensuration of flat shapes.

given that the initial radius before Cody alerted the fire department is

10 ft

Then we can calculate the area of the fire as

Area= πr^2

Area=3.142*(10)^2

Area=3.142*100

Area=314.2ft^2

Also, given that the area of the circular fire has grown to 45401 square feet

let us solve for the radius first, then we can calculate the time taken since the radius was increasing by 2 ft/min

let the radius of the large fire be R

45401=πR^2

R^2=45401/3.142

R^2=14449.714

square both sides we have

R=√14449.714

R=120.2ft

The difference between the radius of the initial fire and the large fire is

R-r=120.2-10

=110.2ft

Hence the time taken can be calculated as

time= 110.2/2

time=55.10min

8 0

3 years ago

I really need help!

Mariana [72]

attached image

Step-by-step explanation:

attached image

7 0

3 years ago

A particular beach is eroding at a rate of 4 centimeters per year. A realtor converts this rate to millimeters per day. Which ex

monitta

Correct answer is A) StartFraction 4 centimeters Over 1 year EndFraction times StartFraction 10 millimeters Over 1 centimeter EndFraction times StartFraction 1 year Over 365 days EndFraction

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

We have , A particular beach is eroding at a rate of 4 centimetres per year. A realtor converts this rate to millimetres per day. We need to find correct expression, when evaluated, results in the correct units and numerical value . Let's find out:

We know that, A particular beach is eroding at a rate of $4\frac{cm}{year}$

$1cm = 10mm$

$1 year = 365 days$

⇒ $4(\frac{cm}{year})$

⇒ $4(\frac{10mm}{year})$

⇒ $4(\frac{10mm}{365days})$

⇒ $\frac{40mm}{365days}$

⇒ $\frac{8mm}{73days}$

Therefore, According to calculations, Correct answer is A) StartFraction 4 centimeters Over 1 year EndFraction times StartFraction 10 millimeters Over 1 centimeter EndFraction times StartFraction 1 year Over 365 days EndFraction

3 0

3 years ago

Read 2 more answers

Drag and drop a statement or reason to each box to complete the proof.

zhannawk [14.2K]

The data observed from the triangle are given below.

Statement Reason

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