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Neko [114]
3 years ago
8

Annie earns $15 per hour babysitting. How many hours will it take her to earn $60?

Mathematics
2 answers:
mrs_skeptik [129]3 years ago
6 0

Answer:

4 hours

Step-by-step explanation:

15 x 4 = 60

$60

Fantom [35]3 years ago
3 0

Answer:

4 hours.

Step-by-step explanation:

We are looking for the amount of money Annie will need to earn 60.

Let the equation be 15+x=60.

The equation could be represented as 15+x=60, or 60-15=x.

The easier solution would be to subtract.

When we subtract 60-15 we get 45, therefore the value of x is 45 making the statements true.

15+45=60 and 60-15=45 as well.

We know she earns 15 an hour, so we have to see how many 15 we can add up to get to 60.

15+15+15+15=60, therefore she will need to work 4 hours.

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F(x) = 2x^2 + 6x – 4<br> g(x) = 5x^3 – 6x^2-3<br><br> Find (f +g)(x).
kogti [31]

Answer:

  • 5x^3 - 4x^2 + 6x - 7

Step-by-step explanation:

<u>Given</u>

  • f(x) = 2x^2 + 6x – 4
  • g(x) = 5x^3 – 6x^2-3

<u> To find </u>

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<u>Solution</u>

  • (f +g)(x) = f(x) + g(x) =
  • 2x^2 + 6x - 4  + 5x^3 - 6x^2 - 3  =
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3 years ago
Number one and number two
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The sum of the angles of an n-sided polygon is (n-2)×180°

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3 years ago
Calculate the integral s f · ds, where s is the entire surface of the solid half ball x2 + y2 + z2 ≤ 1, z ≥ 0, and f = (x + 3y5)
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\displaystyle\iint_{\mathcal S}\mathbf f(x,y,z)\cdot\mathrm d\mathbf S=\iiint_{\mathcal V}\nabla\times\mathbf f(x,y,z)\,\mathrm dV

where \mathcal V is the space enclosed by the surface \mathcal S. The divergence of the given vector field is

\nabla\times\mathbf f(x,y,z)=\dfrac{\partial(x+3y^5)}{\partial x}+\dfrac{\partial(y+10xz)}{\partial y}+\dfrac{\partial(z-xy)}{\partial z}=1+1+1=3

So we can write the volume integral (in spherical coordinates) as

\displaystyle3\iiint_{\mathcal V}\,\mathrm dV=3\int_{\varphi=0}^{\varphi=\pi/2}\int_{\theta=0}^{\theta=2\pi}\int_{\rho=0}^{\rho=1}\rho^2\sin\varphi\,\mathrm d\rho\,\mathrm d\theta\,\mathrm d\varphi=\frac{4\pi}3
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If you had 13 cookies and you gave and even amount to 4 friends would you have any cookies left over
koban [17]

Answer:

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Step-by-step explanation:

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5 0
3 years ago
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Find sin(β) in the triangle.
Pachacha [2.7K]

Answer:

4/5

Step-by-step explanation:

<u>Given </u><u>:</u><u>-</u><u> </u>

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We need to find the value of sin(β) in the given triangle . We know that the ratio of sine is ,

:\implies sin(β) = p/h

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:\implies sin(β) = 4/5

<h3>Hence the required answer is 4/5.</h3>
5 0
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