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nexus9112 [7]
3 years ago
12

Martin would like to start training to run a Martin the first week he runs a total of 15 miles he would like to run 30% more mil

es each week than the week before how far will Martin run the third week
Mathematics
1 answer:
Mice21 [21]3 years ago
3 0

Answer:

Third week = 23.35 miles

Step-by-step explanation:

First week total miles = 15 miles

he would like to run 30% more miles each week than the week before

Second week = 15 miles + (30% of 15 miles)

= 15 + (30% * 15)

= 15 + (0.3 * 15)

= 15 + 4.5

= 19.5 miles

Second week = 19.5 miles

Third week = 19.5 miles + (30% of 19.5 miles)

= 19.5 + (30% * 19.5)

= 19.5 + (0.3 * 19.5)

= 19.5 + (5.85)

= 23.35 miles

Third week = 23.35 miles

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Please explain your answer. Thank you!
Liula [17]

Answer:

C

Step-by-step explanation:

Let length of rectangle be "l"

Let width of rectangle be "w"

We know,

LENGTH is 2 MORE THAN WIDTH, we can write:

l = w + 2

Also, note the perimeter is the sum of all 4 sides of a rectangle, thus:

length + width + length + width

Now,

The perimeter is given as 72, so we can write:

l + l + w + w = 72

2l + 2w = 72

We have 2 equations that we need to solve and find the length (l).

The first equation is:

l = w + 2

Rearranging, we have:

w = l - 2

We put this into 2nd equation and find the value of l:

2l + 2w = 72\\2l + 2(l-2) = 72\\2l+2l-4=72\\4l-4=72\\4l=76\\l=\frac{76}{4}\\l=19

The length is 19 meters, the correct answer is C

3 0
4 years ago
Which expression is equivalent to 45a-10b
emmainna [20.7K]
The answer is D............
4 0
3 years ago
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There are 800 members in an astronomy club, and 320 of them are females. What percent of the members are males.
Liula [17]
ANSWER: 60% of the members are males

How?
-800 total
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Hope this Helps!
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3 years ago
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At the beginning of an environmental study, a forest covered an area of 1500km^2. Since then, the area has decreased by 6.3% eac
geniusboy [140]

The <em><u>correct answer</u></em> is:

y=1500(0.937)^t

Explanation:

An exponential function is of the form

y=a\times b^x, where a is the initial population, b is 1 plus the amount of yearly change, and x is the number of years.

For our problem, a, the initial population, is 1500.

The yearly change is 6.3%; 6.3% = 6.3/100 = 0.063.  Since it is decreasing, this is negative; 1+(-0.063) = 0.937.

We use t as the number of years.

This gives us

y=1500(0.937)^t

3 0
3 years ago
Maths easy class 8 whoever gets it I will give u brainlist​
asambeis [7]

Answer:

424 cm²

Step-by-step explanation:

The figure is composed of a square and a trapezium on top

A of square = 18² = 324 cm²

A of trapezium = \frac{1}{2} h (b₁ + b₂ )

where h is the perpendicular height and b₁, b₂ the parallel bases

Here h = 8, b₁ = 18 and b₂ = 7 , then

A = 0.5 × 8 × (18 + 7) = 4 × 25 = 100 cm²

Area of hexagonal park = 324 + 100 = 424 cm²

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3 years ago
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