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3 years ago

Of 98 bikes 37 are mountain bikes. How many are not

Mathematics

2 answers:

nirvana33 [79]3 years ago

6 0

Answer:

61 bikes are regular the other 37 are moutain bikes.

Step-by-step explanation:

can i have brainliest

tia_tia [17]3 years ago

3 0

Answer:

61 bikes are not mountain bikes.

Step-by-step explanation:

To figure this out you have to simply subtract the amount of mountain bikes from the total amount of bikes.

98 - 37 = 61

Now you know that 61 of the bikes are not mountain bikes.

I hope this helped! :)

~<em>CaityConcerto</em>

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Step-by-step explanation:

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3 years ago

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A company that manufactures storage bins for grains made a drawing of a silo. The silo has a conical base, as shown below:

sasho [114]

To find the volume of this storage bin, you will use the formula for volume of a cylinder and of a cone.

V = Bh (cylinder)
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All of these choices show correct answers!

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3 years ago

Find the product of all real values of r for which 1/2x=r-x/7

Dahasolnce [82]

Answer:

$r = \±\sqrt{14$

$Product = -14$

Step-by-step explanation:

Given

$\frac{1}{2x} = \frac{r - x}{7}$

Required

Find all product of real values that satisfy the equation

$\frac{1}{2x} = \frac{r - x}{7}$

Cross multiply:

$2x(r - x) = 7 * 1$

$2xr - 2x^2 = 7$

Subtract 7 from both sides

$2xr - 2x^2 -7= 7 -7$

$2xr - 2x^2 -7= 0$

Reorder

$- 2x^2+ 2xr -7= 0$

Multiply through by -1

$2x^2 - 2xr +7= 0$

The above represents a quadratic equation and as such could take either of the following conditions.

(1) No real roots:

This possibility does not apply in this case as such, would not be considered.

(2) One real root

This is true if

$b^2 - 4ac = 0$

For a quadratic equation

$ax^2 + bx + c = 0$

By comparison with $2x^2 - 2xr +7= 0$

$a = 2$

$b = -2r$

$c =7$

Substitute these values in $b^2 - 4ac = 0$

$(-2r)^2 - 4 * 2 * 7 = 0$

$4r^2 - 56 = 0$

Add 56 to both sides

$4r^2 - 56 + 56= 0 + 56$

$4r^2 = 56$

Divide through by 4

$r^2 = 14$

Take square roots

$\sqrt{r^2} = \±\sqrt{14$

$r = \±\sqrt{14$

Hence, the possible values of r are:

$\sqrt{14$ or $-\sqrt{14$

and the product is:

$Product = \sqrt{14} * -\sqrt{14}$

$Product = -14$

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3 years ago

A rectangular dog park was built with the dimensions shown. The fencing that completely surrounds the park cost $12 a yard. Each

leonid [27]

Answer:

sod- 1662.6

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Step-by-step explanation:

sod-

25.5 * 8.25 = 207.825

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fencing-

8.25+8.25+25.5+25.5= 67.3

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fencing + sod

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2 years ago

Solve for r <br> r/8 =7<br> r = ____

Nostrana [21]

Answer:

r=56

Step-by-step explanation:

Since, r divided by 8 gives 7, if you do the inverse function(which is basically like the reverse of the question)

you can multiply 8 and 7 to find the r.

So 8 times 7 gives 56.

And to check you can do

$\frac{56}{8}$ which gives 7

You can tell me if my explanation is wrong. Thanks

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2 years ago

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