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3 years ago

In ∆ABC, ∠A is a right angle and m∠B = 45°. Find BC.

Mathematics

1 answer:

Oxana [17]3 years ago

3 0

Answer:

22ft

Step-by-step explanation:

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4-2(3+2)<br> 2<br> How do you do this help me

Nataly_w [17]

Answer:

Step-by-step explanation:

$4 - 2(3 + 2) ^{2} \\ 4 - 2( {5}^{2} ) \\ 4 - 2(25) \\ 4 - 50 = - 46$

6 0

4 years ago

Determine the number of degrees in 8π/9 radians

snow_tiger [21]

Answer:

π radians=180°(basic definition) 8π9 radians=89⋅180∘=160∘

Hope this helps!! If so please mark brainliest and rate/heart to help my account if it did!!

6 0

4 years ago

Explain how to solve the equation 2x+4=-6x+38 in complete sentences. Your response needs to be a paragraph in length and use app

icang [17]

Answer:

×=17/4

Step-by-step explanation:

The equation 2x+ 4=-6x+38

First of all you collect like terms by moving the number -6x over to the left hand side which then becomes +6x as it crosses the equal to sign, likewise you move +4 over to the right hand side which then becomes -4. The equation is now 2x+6x=38-4, which when solved gives 8x=34. X is then made subject of formula by dividing both sides by 8 therefore x=34/8 which when reduced to the lowest term is 17/4

I hope it helps

8 0

3 years ago

(15 ^3) x 15^-6 <br> Plz help me

masya89 [10]

put 3 into 15 than put 6 into 15 then the answer u get from putting 6 into 15 subtract that by 2 and the answer u get from the u multpy the answer that u got from putting 3 into 15 together

4 0

4 years ago

You are dealt one card from a standard 52-card deck. Find the probability of being dealt a card greater than 2 and less than 5.

sladkih [1.3K]

Answer:

$p =\frac{Possible cases}{Total cases}$

And replacing 8 for the possible cases and 52 for the total number of cards for a single selection we got:

$p =\frac{8}{52}= 0.154$

Step-by-step explanation:

For a standard deck we need to remember that we have 4 types suits of Spades, Hearts, Diamonds, and Clubs. And in total 13 possible options A,2,3,4,5,6,7,8,9,10,J,Q,K.

If we want the probability that a card selected would be greater than 2 and less than 5 means that we are interested in the cards with denomination 3's and 4's because the card can't be 2 or 5.

And from the previous info we know that we have four cards for the 4's and four for the 3's so then we have a total of 8 possible cards in the standard deck of 52 who satisfy the conditions required.

And then we can find the probability desired with this formula:

$p =\frac{Possible cases}{Total cases}$

And replacing 8 for the possible cases and 52 for the total number of cards for a single selection we got:

$p =\frac{8}{52}= 0.154$

3 0

3 years ago