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3 years ago

14

One lap around a track is one eigth of a mile.a horse ran a distance of 11 laps in 3 minutes and 30 seconds.what is the horses a

verage speed in miles per minute

1 answer:

pantera1 [17]3 years ago

5 0

Miles earned= ((1÷8)×11)÷1
= 1.375 miles
average speed=total distance/total time
=1.375÷3.5=0.3928 miles/min

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when your finding the area of a rectangle do you multiply the numbers around the perimeter or add them.

Flura [38]

When you are finding the area, you multiply the length x the width. So for example, we have a rectangle that the length is 6 feet and the width is 4 feet. So, first of all we multiply 6x4= 24. Since its area don't forget it is Square Feet (or any other type of measurement).

Hope it helps!

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3 years ago

Which expression is equivalent to 5(2x + 10)?

Reika [66]

It’s E because if your multiply 5 x 2x u get 10x and 10 x5 = 50 so our answer is E 10x +50

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2 years ago

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What is the intercept for the graph of this line? 5x -3y =11

MatroZZZ [7]

Step-by-step explanation:

$5x-3y=11\\\\x-intercept\ is\ for\ y=0\\\\5x-3(0)=11\\5x-0=11\\5x=11\qquad\text{divide both sides by 5}\\x=\dfrac{11}{5}\\\\y-intercept\ is\ for\ x=0\\\\5(0)-3y=11\\0-3y=11\\-3y=11\qquad\text{divide both sides by (-3)}\\y=-\dfrac{11}{3}$

3 0

2 years ago

Rationalise 5 divide by square root of 12

Fantom [35]

Answer:

(5√12)/12

Step-by-step explanation:

In general, 1/√a can be rationalized as (√a)/a. That is the denominator can be multiplied by the square root of the same number to rationalize it. The numerator needs to be multiplied by the same square root.

$\dfrac{5}{\sqrt{12}}=\dfrac{5}{\sqrt{12}}\cdot\dfrac{\sqrt{12}}{\sqrt{12}}=\boxed{\dfrac{5\sqrt{12}}{12}}$

4 0

2 years ago

How to do this question plz answer my question

Degger [83]

Answer:

$121.82

Step-by-step explanation:

Okay, this is kind of complex, so let's go step by step.

First, we want to find the area of the rectangular lawn - we can do this by multiplying the length and width. The length is 100 and the width is 45 so $45\cdot100=4500$ m² is the area of the rectangle.

However, there are 3 ponds in which the grass seeds will not be going - so we need to find the area of all 3 of these circles and subtract it from 4500 (our rectangle area).

The area of a circle is represented by the formula $\pi r^2$

The diameters are given here, which is double the radius, so to find the radius of each circle let's divide the diameters by 2.

First circle's radius: $20\div2=10$

Second circle's radius: $10\div2=5$

Third circle's radius: $5\div2=2.5$

Now let's find the area of each circle.

<em>First Circle</em>: $\pi \cdot10^2 = \pi\cdot100=3.14\cdot100=314$

<em>Second Circle</em>: $\pi\cdot5^2 = \pi \cdot25 = 3.14\cdot25=78.5$

<em>Third Circle:</em> $\pi \cdot 2.5^2 = \pi \cdot6.25 = 3.14\cdot6.25=19.625$

Adding all of these values gets us 412.125.

Now we can subtract from this from 4500 to get us 4087.875

If the grass seeds that cost £1.49 cover 50m² each, then we need $4087.875\div50=81.7575$ bags.

Each bag costs £1.49, so the total cost is $81.7575\cdot1.49\approx121.82$

Hope this helped!!

5 0

3 years ago