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Tanya [424]
3 years ago
11

THE PICTURE Is Up THERE PLEASE HELP ME WTHH

Mathematics
1 answer:
Damm [24]3 years ago
5 0
The last one i think
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B. Write an equation that shows the relationship 64% of
White raven [17]

B.

0.65 \times y = 40 \\ y =  \frac{40}{0.65}

C.

.45 \times x = 72 \\ x =  \frac{72}{.45}  \\ x = 160 \\ 45 \: percent \: of \: 160 \: is \: 72

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3 years ago
Please help me if yk tha answer :))
Basile [38]

Answer:

cosθ = sinθ/tanθ

Step-by-step explanation:

tanθ = sinθ/cosθ (Given)

cosθ(tanθ) = sinθ (Mulitplied cosθ on both sides)

cosθ = sinθ/tanθ (Divided tanθ on both sides)

3 0
2 years ago
[GEOMTRY]~Which of the following steps would be more useful in proving that a circle with a radius of 4 inches is similar to a c
svp [43]

Answer:

B) dilate the smaller circle by a scale factor of 9

Step-by-step explanation:

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3 years ago
Travel and tourism in the United States fell off after the 9/11 terrorist attacks but _____ in 2010.
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Travel and tourism stabilized in the usa in 2010
5 0
3 years ago
A lighthouse is located on a small island 5 km away from the nearest point P on a straight shoreline and its light makes seven r
Vaselesa [24]

Answer:

Light is moving at the speed = 77.78 km/min

Step-by-step explanation:

Given:

Distance between island and point P = 5 km

Moving along the the shoreline when it is 1 km from P.

So, x = 1

From the above statement light makes seven revolutions per minute.

Therefore,              

\frac{d\theta}{dt}=\frac{7\times 2\pi\ rad}{1\ min}  = 14\pi\ rad/min  

Solution:

From the given figure.

tan\theta=\frac{x}{5}

Substitute x = 1

tan\theta=\frac{1}{5}  -------------------(1)

Now, first we differentiate both side with respect to t.

\frac{d(tan\theta)}{dt} = \frac{d}{dt}.(\frac{x}{3})

Using chain rule.

\frac{d(tan\theta)}{dt}.\frac{d\theta}{dt}  = (\frac{1}{5})\frac{dx}{dt}

sec^{2} \theta.\frac{d\theta}{dt} = \frac{1}{5}.\frac{dx}{dt}

(1+tan^{2} \theta).\frac{d\theta}{dt} = \frac{1}{5}.\frac{dx}{dt}

Substitute tan\theta=\frac{1}{5} from equation 1.

(1+(\frac{1}{3})^{2} ).\frac{d\theta}{dt} = \frac{1}{5}.\frac{dx}{dt}

(1+\frac{1}{9}).\frac{d\theta}{dt} = \frac{1}{5}.\frac{dx}{dt}

Substitute \frac{d\theta}{dt}=14\pi

\frac{10}{9}.14\pi  = \frac{1}{5}.\frac{dx}{dt}

Applying cross multiplication rule.

\frac{dx}{dt}= \frac{700\pi }{9}

\frac{dx}{dt}= 77.78\pi

Therefore, light is moving along the shore at the speed of 77.78 km/min

6 0
3 years ago
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