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Arada [10]
3 years ago
8

(2x+y=0 { -x + 3y = -14

Mathematics
1 answer:
mestny [16]3 years ago
4 0

Answer:

x=2 y=-4

Step-by-step explanation:

-2x=y

-x-6x=-14

-7x=-14

x=2

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Something else i’m supposed to know
Andru [333]

Answer:

x equals 9.

The largest angle is 90.

Step-by-step explanation:

10x + 3x + 7x = 180 \\   \frac{20x}{20}  =  \frac{180}{20}  \\ x = 9

x = 9 \\ 10x \\ 10(9) \\ 90

8 0
3 years ago
In New York State, 38% of the houses have a pool and 21% of the houses have both a pool and a hot tub. What is the probability t
SSSSS [86.1K]

Answer:

Probability that a  house has a hot tub given that it has a pool is 55%.

Step-by-step explanation:

We are given that in New York State, 38% of the houses have a pool and 21% of the houses have both a pool and a hot tub.

Let the probability that houses have a pool = P(A) = 0.38

Also, let B = event that houses have a hot tub

Probability that houses have both a pool and a hot tub = P(A \bigcap B) = 0.21

Now, the conditional probability that a  house has a hot tub given that it has a pool is given by =  P(B / A)

<u>As we know that</u>;   P(B / A)  =  \frac{P(A \bigcap B)}{P(A) }

                                              =  \frac{0.21}{0.38}  

                                              =  0.553 ≈ 55%

Hence, the probability that a  house has a hot tub given that it has a pool is 55%.

8 0
3 years ago
Find the area of the triangle.<br> 3 cm<br> 11 cm<br> C с<br> 14.5 cm
boyakko [2]

Answer: The answer is 43.5 because when using the formula you get this result.

Step-by-step explanation: Area of triangle is base x height divided by 2. So do our base 14.5 and our height 6 and multiply them together. 14.5 x 6 = 87 / 2 = 43.5

6 0
3 years ago
You have a truck with two gas tanks. The volume of the larger tank is "8x2 + 2x − 1" in3 and the volume of the smaller tank is "
DaniilM [7]
Tank1+tank2=8x^2+2x-1+7x^2-2x+1

Total=15x^2
7 0
4 years ago
The diameter of a ping pong ball is 4.0cm. find the length in kilometers of a row of 6.02×1023 ping pong balls.
Vikentia [17]
The length is determined by multiplying the number of balls with the diameter. The answer that would come out of this is in units of centimeters.

    L = (6.02 x 10^23 balls)(4 cm/ball)
    L = 2.408 x 10^24 cm

Then, we use the proper conversion factor to convert centimeter to kilometer.

     L = (2.408 x 10^24 cm)(1 m/100 cm)(1 km/1000 m)
       L = (2.408 x 10^24)(10^5)
        

The answer to this item is 2.408 x 10^19 km. 
3 0
3 years ago
Read 2 more answers
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