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3 years ago

15

Sandi has 3/5 of an hour to wrap presents. If it takes her 1/10 of an hour to wrap each present, how many can she wrap in the ti

me she has left?

1 answer:

Mandarinka [93]3 years ago

3 0

6, 3/5 of 60minutes is 36. 1/10 of 60mins. is 6. 36/6 is 6.

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Give the equation of the circle centered at the origin and passing through the point (0,5)

Julli [10]

Answer:

$x^{2} +y^{2}=25$

Step-by-step explanation

The standard equation of a circle centered at origin is $x^{2} +y^{2} =r^{2}$

r = radius of the circle

The circle is passing through the point (0,5)

∴ radius $r=\sqrt{(0-0)^{2}+(5-0)^{2} }$

$r=\sqrt{0+25}$

$r=\sqrt{25}$

$r^{2}=25$

∴ The equation of the circle is

$x^{2} +y^{2} = 25$

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3 years ago

A cylindrical well has a radius of 10 feet and a height of 15 feet.what volume of water will it take to fill in the well?

horsena [70]

The volume of the well...
V ≈ 4712.39

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3 years ago

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A company estimates that it will sell ????(x) units of a product after spending x thousand dollars on advertising, as given by ?

zepelin [54]

Answer:

$(11\frac{1}{3},20)$

Step-by-step explanation:

If the Number of Sales of x units, N(x) is defined by the function:

$N(x)=-5x^3+235x^2-3400x+20000,10\leq x\leq 40$

$N'(x)=-15x^2+470x-3400\\When -15x^2+470x-3400=0\\x=20, x=11\frac{1}{3}$

Next, we text the critical points and the end points of the interval to see where the derivative is increasing.

$N'(10)=-200\\N'(11\frac{1}{3})=0\\N'(19)=115\\N'(20)=0\\N'(40)=-8600$

Thus, the rate of change of sales $N'(x)$ is increasing in the interval $(11\frac{1}{3},20)$ on 10≤x≤40.

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3 years ago

Solve the equation. Check your solution.

VladimirAG [237]

-5x/6 + 1=7/18
lowest common multiple=18
-15x+18=7
-15x=7-18
-15x=-11
x=-11/-15=11/15

The solution set is [11/15]

we check it out.
-5(11/15) /6 + 1 =7/18
(-55/15) / 6 +1=7/18
-55/90 + 1=7/18
(-55+90) /90=7/18
35/90=7/18
7/18=7/18

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4 years ago

Find the length of the third side of the right triangle

Maurinko [17]

Answer:

9

Step-by-step explanation:

2 2

b + 8 = 17

b + 16 = 34

34 - 16 = 18

18 ÷ 2 = 9

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3 years ago

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