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Alja [10]
3 years ago
13

Can someone answer 6???

Mathematics
2 answers:
sergeinik [125]3 years ago
6 0

Answer:

c

Step-by-step explanation:

erik [133]3 years ago
3 0

Answer: Choice B

15 + 5*sqrt(3)

=======================================================

How to get this answer:

Let A, B, C be the sides of the triangle such that  A < B < C.

A is the short leg, B is the long leg, C is the hypotenuse

For any 30-60-90 triangle, the hypotenuse is twice as long as the short leg, so

C = 2*A

C = 2*5

C = 10

For any 30-60-90 triangle, the long leg is exactly equal to sqrt(3) times the short leg

B = A*sqrt(3)

B = 5*sqrt(3)

Now add up the three sides

A+B+C = 5+5*sqrt(3)+10

A+B+C = 15+5*sqrt(3)

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From a point on a river, two boats are driven in opposite directions, one at 7 miles per hour and the other at 11 miles per hour
Bogdan [553]

Answer:

Both boats will be 54 miles apart after 3 hours.

Step-by-step explanation:

Given that from a point on a river, two boats are driven in opposite directions, one at 7 miles per hour and the other at 11 miles per hour, to determine how many hours they will be 54 miles apart, the following calculation must be performed :

54 / (11 + 7) = X

54/18 = X

3 = X

Therefore, both boats will be 54 miles apart after 3 hours.

4 0
3 years ago
A zookeeper is monitoring the supply of grain and hay that she has to feed the
garri49 [273]

Answer: Day 6

Step-by-step explanation: Every 3 days 1 pound of hay is used every day 1 pound of grain is used. There are 10 pounds of grain and 8 pounds of hay. On the 6th day there are 6 pounds of hay left and 6 pounds of grain left.

6 0
3 years ago
The cost (in dollars) in making b bracelets is represented by 4+5b. The cost (in dollars) of making b necklaces is represented b
ddd [48]
Answer:

P(b)=3b+2

Step-by-step explanation:

The cost (in dollars) in making b bracelets is represented is

B(b)=4+5b

The cost (in dollars) of making b necklaces is

N(b)=8b+6

To find how much more it will cost to make b necklaces than b bracelets, we find the difference,

P(b)=N(b)-B(b)

P(b)=8b+6-(4+5b)

P(b)=8b+6-4-5b

P(b)=3b+2

This is a polynomial in descending powers of b, hence it is in standard form;
8 0
3 years ago
2x+y=10<br> Y=5x-11<br> Solve the system of equations by substitution
antoniya [11.8K]
The answer would be (3,4)
8 0
3 years ago
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Find 2 consecutive even numbers such that the sum of the
Elena L [17]

Answer:

14,16

Step-by-step explanation:

Let x be the first even number.

Let y be the 2nd even number.

Given, y - x = 2 (Since they are 2 consecutive even numbers.)

rearranging the equation: y = x+2 (equation 1)

Also given,

y+2x=44\\ (equation 2)

Now we can substitute equation 1 into equation 2 to find x.

x+2+2x = 44\\3x+2 = 44\\3x = 44-2\\3x=42\\x = \frac{42}{3} \\x = 14

Given the smaller even number x, is 14, we will substitute x into equation1 to find y, the bigger even number.

y = 14+2

= 16

Therefore the 2 numbers are 14 and 16.

6 0
2 years ago
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