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Elena L [17]
3 years ago
15

6x - 2y = 10

Mathematics
2 answers:
pishuonlain [190]3 years ago
5 0

Answer:

y = 3x -5

Step-by-step explanation:

6x - 2y = 10

-6x. -6x

Inverse Operations

-2y = -6x + 10

÷-2. ÷-2. ÷-2

y = 3x - 5

scoray [572]3 years ago
5 0

Answer:

6x – 2y = 10

2x + 3y = 51

Solving the first equation above for y gives:

   

     y =        (3)     x – 5

Which choice shows the result of substituting

3x – 5 into the second equation for y?

2(3x – 5) + 3x = 51

----------2x + 3(3x – 5) = 51      its B

2(3x – 5) + 3y = 51

Solving the equation 2x + 3(3x – 5) = 51

for x gives x =

---6.

The complete solution to the system is:

----(6,  13)

Step-by-step explanation:

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A ladder 20 feet long leans against a building forming and angle of 46 degrees with the level ground. To the nearest foot how fa
sleet_krkn [62]

Answer:

The distance of the foot of the ladder to the building is 14 ft.

Step-by-step explanation:

The length of ladder = 20 ft

Angle formed by ladder with level ground, θ = 46

We are required to find out the distance of the foot of the ladder from the building

The above question can be found out by using trigonometric relations as follows;

Cos\theta = \frac{Adjacent\, side \, to\,  angle}{Hypothenus\, side \, of\,  triangle}

The adjacent side of the right triangle formed by the ladder the building and the ground is the distance of the foot of the ladder from the building

The hypotenuse side is the length of the ladder = 20 ft

Therefore;

Adjacent side of triangle = Hypotenuse × cosθ

∴ Distance of the foot of the ladder from the building = Hypotenuse × cosθ

Distance of the foot of the ladder from the building = 20 ft × cos(56)

Distance of the foot of the ladder from the building = 13.893 ft

To the nearest foot, the distance of the foot of the ladder to the building = 14 ft.

7 0
3 years ago
According to a study conducted by an​ organization, the proportion of Americans who were afraid to fly in 2006 was 0.10. A rando
krek1111 [17]

Answer: Even is not unusual.

Step-by-step explanation:

Given:

P = 0.10

n = 1200

x = 132

1. Sample of proportion ( ˆp ) = x/n

= 132/1200

= 0.11

2. Z = ˆp - p / √p ( 1 - p )/ n

= 0.11 - 0.10 / √0.10 ( 1 - 0.10 ) / 132

= 0.01 / 0.02611

= 0.3829

3. Probability

P ( ≥ 132 ) = P( Z > 1.50 ) = 1 - P( Z > 1.50 )

= 1 - 0.9332

= 0.0668

The probability is higher than (0.05). Which makes the event unusual, therefore there is no enough evidence which suggest that the number of Americans who are afraid to fly has increased.

4 0
4 years ago
Plzzzz help I gotta hury
VikaD [51]

Answer:

Top option / (x ,y) -> (x + 6, y + 6)

Step-by-step explanation:

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To figure out the answer though, we need to figure out the dilation,

See attached photo!

(sorry for sloppy drawing/etc, it is hard on the laptop haha)

7 0
3 years ago
Plzzz help plzzz I need help on both of them
Paul [167]
The answer to the first problem is G.

Since there are 3 boys and 9 girls who are left-handed, that makes 12 people in total in sixth grade who are left-handed. The total number of sixth graders at the middle school is 150 since there are 90 girls and 60 boys in that grade. Divide 150 from 12 to get 0.08. You change it to percentage form by multiplying 0.08 by 100 to get 8%.

The answer for the second problem is C. You change the percentage (in this case it is 76%) to decimal form by dividing by 100 to get 0.76. You then multiply 0.76 with 8,950 to get 6,802.
5 0
3 years ago
If 5 apples sell for $.95 what is the cost of 12 apples
laiz [17]

Answer:$2.28

Step-by-step explanation:

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