3 years ago

(17) Please help with math!

Mathematics

1 answer:

Naddika [18.5K]3 years ago

8 0

The correct answer is Amit should have multiplied both sides of the equation by 12/5
Hope it helps

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An urn contains 6 red and 7 black balls. 4 balls are randomly drawn from the urn in succession, with replacement. That is after

Nataly [62]

Answer:

0.538

Step-by-step explanation:

There are 13 balls in the urn

7 are black and 6 are red

There are 7 chances out of 13 to pick a black ball

7/13
7 ÷ 13 = 0.53846.....

Round and get:

<u>0.538</u>

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3 years ago

Which of the following represents the set of possible rational roots

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Answer:

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Step-by-step explanation:

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3 years ago

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A 30 ft ladder leans against the side of a house. If the base of the ladder sits 10 ft away from the base of the house, what is

musickatia [10]

Answer:

70.5°

Step-by-step explanation:

To solve for the ladder's angle of elevation, we solve using the Trigonometric function of Cosine

= cos θ = Adjacent/Hypotenuse

Where

Adjacent = Distance of the base from the house = 10ft

Hypotenuse = Length of the ladder = 30 ft

cos θ = 10/30

cos θ = 1/3

θ = arc cos 1/3

θ = 70.528779366

Approximately = 70.5°

Therefore, the ladder's angle of elevation is 70.5°

3 0

3 years ago

If sin theta = 2/3 and tan theta <0 what is the value of cos theta?

Mrac [35]

Answer:

d) $\cos(\theta)=-\frac{\sqrt{5}}{3}$

Step-by-step explanation:

If $\sin(\theta)=\frac{2}{3}$ and $\tan(\theta)\:$ , then

$\theta$ is in quadrant 2.

Recall that;

$\sin^2(\theta)+\cos^2(\theta)=1$

We substitute the given sine ratio to obtain;

$(\frac{2}{3})^2+\cos^2(\theta)=1$

$\frac{4}{9}+\cos^2(\theta)=1$

$\cos^2(\theta)=1-\frac{4}{9}$

$\cos^2(\theta)=\frac{5}{9}$

$\cos(\theta)=\pm \sqrt{\frac{5}{9}}$

$\cos(\theta)=\pm \frac{\sqrt{5}}{3}$

We are in the second quadrant, therefore

$\cos(\theta)=-\frac{\sqrt{5}}{3}$

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3 years ago

Help me this is divison slove it pls

djverab [1.8K]

Answer:

i would say 0.14 pls mark brainly :3

8 0

2 years ago

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