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malfutka [58]
3 years ago
13

A forest fire covers twice the amount of forest as it did 3 days ago. 3 days ago, this fire covered 300 square miles and it cont

inues to grow at the same rate. How many square miles will it cover 9 days from now? A. 9,600 sq miles B. 4,800 sq miles C. 3,200 sq miles D. 6,400 sq miles
Mathematics
2 answers:
yanalaym [24]3 years ago
7 0
D. 6400 sq miles in 9 days
yKpoI14uk [10]3 years ago
6 0

Answer:

The correct option is B) 4800 square miles.

Step-by-step explanation:

Consider the provided information.

It is given that the fire covered 300 square miles in 3 days ago. And it continues to grow at the same rate.

Therefore, today it covers the twice of area it covers on yesterday.

The area covers by fire 2×300=600 square miles

Now the area covers after 3 days from today will be:

2×2×300 = 2×600 = 1200 square miles

The area covers after 3×2=6 days from today is:

2×2×2×300 = 2400 square miles

The area covers after 3×3=9 days from today is:

2×2×2×2×300 = 4800 square miles

Hence, the correct option is B) 4800 square miles.

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What can you triple and then subtract by 7 to get -1
iVinArrow [24]

Answer:

2

Step-by-step explanation:

<em>let </em><em>the </em><em>number </em><em>be </em><em>x</em>

<em>The</em><em>n</em><em> </em><em>you </em><em>triple </em><em>the </em><em>x </em><em>and </em><em>minus </em><em>7 </em><em> </em><em>from </em><em>it </em><em>and </em><em>you </em><em>equate </em><em>it </em><em>to </em><em>-</em><em>1</em>

7 0
3 years ago
A lap around Natalie's neighbourhood is 20 kilometres. Natalie ran 2 laps before
Fynjy0 [20]
I would say about 40 kilometers it’s ifs 20 around her neighborhood that 20+20=40 and walking tha rest made the question easier but yea 40
8 0
3 years ago
Which shows the expression below simplified? 0.00048 - (3.4 × 10-5) A. 4.46 × 10-4 B. 3.39952 × 10-5 C. 4.46 × 10-5 D. 1.4 × 10-
MakcuM [25]

Option C

The simplified form of given expression is 4.46 \times 10^{-4}

<em><u>Solution:</u></em>

Given that we have to simplify the expression shown below

0.00048 - (3.4 \times 10^{-5})

Let us first convert 0.00048 to scientific notation

<em><u>Steps to follow:</u></em>

Move the decimal point in your number until there is only one non-zero digit to the left of the decimal point. The resulting decimal number is a.

Count how many places you moved the decimal point. This number is b.

If you moved the decimal to the left b is positive.

If you moved the decimal to the right b is negative.

If you did not need to move the decimal b = 0.

Write your scientific notation number as a x 10^b and read it as "a times 10 to the power of b."

Remove trailing 0's only if they were originally to the left of the decimal point.

0.00048 = 4.8 \times 10^{-4}

So the given expression becomes,

\rightarrow 4.8 \times 10^{-4} - 3.4 \times 10^{-5}

Let us make the exponent of second term as -4

\rightarrow 4.8 \times 10^{-4} - 0.34 \times 10^{-4}

Take 10^{-4} as common term,

\rightarrow 10^{-4} (4.8 - 0.34)

\rightarrow 4.46 \times 10^{-4}

Thus option C is correct

7 0
3 years ago
Please help with this
Dmitriy789 [7]

Step-by-step explanation:

All has been answered... send me any questions at comments

8 0
2 years ago
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OD) A tree is 30 feet tall and casts a shadow that is 25 feet long. At the same time, a man
RUDIKE [14]

Answer:

6ft

Step-by-step explanation:

7 0
3 years ago
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