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3 years ago

How can I solve the statement below?

Mathematics

1 answer:

QveST [7]3 years ago

6 0

9514 1404 393

Answer:

A ≈ 65.4°

Step-by-step explanation:

The mnemonic SOH CAH TOA is intended to remind you of the trig relations associated with pairs of sides. For angle A, given sides b and c are the adjacent side and the hypotenuse, respectively. The appropriate relation is ...

Cos = Adjacent/Hypotenuse

cos(A) = b/c

A = arccos(b/c) = arccos(2.5/6)

A ≈ 65.4°

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Help me pls 20 POINTS

Tema [17]

Answer:

bottom =80m^2

Side =50m^2

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2 years ago

A box of jerseys for a pick-up game of basketball contains 9 extra-large jerseys, 6 large jerseys, and 5 medium jerseys. If you

aleksley [76]

Answer:

1/114 or 0.008772

Step-by-step explanation:

I am not very sure, my answer seems unlikely, but here's what I think:

There are 20 jerseys in the box to begin with, and 5 medium jerseys that you can have.

Therefore, the probability of you randomly grabbing a medium sized jersey is 5/20 or 1/4.

After taking out one medium sized jersey, there are 19 jerseys in the box and 4 medium jerseys you can pick from.

The probability of you randomly grabbing a medium sized jersey is 4/19.

After taking out another medium sized jersey, there are 18 jerseys left in the box and 3 medium jerseys you can pick from.

The probability of you randomly grabbing a medium sized jersey is 3/18.

To get the answer, you do 1/4 * 4/19 * 3/18, and get 1/114, or 0.00877192982.

If you round that to the nearest millionth, it's 0.008772

Don't judge me, it might not be correct.

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3 years ago

Factor the trinomial:<br> 5x^2+41x+42

babunello [35]

Answer:

(5x + 6) (x + 7)

Step By Step Explanation:

Use the sum form to the product.

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2 years ago

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What two numbers add to -15 but multiply to 50

liberstina [14]

Answer:

-10 and -5

Step-by-step explanation:

Add -10 and -5 and you get -15, multiply the two and you'll get positive 50, because multiplying two negative numbers gives you a positive number, in this case 50.

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3 years ago

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How many L of A 90% saline solution must be mixed with 4 L of a 50% saline solution to make a 74% solution ?

insens350 [35]

Answer:

6 L

Step-by-step explanation:

Given two solutions:

1st solution is 90% saline solution. Let the volume of this solution be $x$ litres.

2nd solution is 50% saline solution. Volume of this solution = 4 L

Resultant solution is 74% saline.

To find:

The volume of 1st solution = ?

Solution:

Total volume of the 74% saline mixture = (4+ $x$ ) Litres

We can write equation here, as per the percentage of saline in the mixtures.

90% of $x$ L + 50% of 4 L = 74% of ( $x$ +4)

$\Rightarrow \dfrac{90x}{100} + \dfrac{50}{100}\times 4 = \dfrac{74}{100}\times (x+4)\\\Rightarrow 90x + 200 = 74x+296\\\Rightarrow 90x-74x = 296-200\\\Rightarrow 16x = 96\\\Rightarrow x = \bold{6\ L}$

Therefore, the volume must be <em>6 L</em>.

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3 years ago