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11111nata11111 [884]
3 years ago
6

Needdddd help pls ill mark brainlist​

Mathematics
1 answer:
Ilya [14]3 years ago
4 0

Step-by-step explanation:

correct answer 2) y> 3x+2

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Write an equation of a line containing the point (-2, 1) and is perpendicular to y= -1/4x-4
frosja888 [35]

the answer should be -4

hope this is correct for you and this helped

6 0
3 years ago
3x+1/5 y= 7 solve for x
TiliK225 [7]
X = -1/15y+7/3

I hope this helps! :>
4 0
3 years ago
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The ratio of the side lengths of a quadrilateral is 3:3:5:8, and the perimeter is 380cm. What is the measure of the longest side
MariettaO [177]

Answer: The second option (160 cm)

Step-by-step explanation:

1. You can obtain the perimeter of a quadrilateral by adding the lenghts of the sides.

2. You know that the ratio of the side lengths is 3:3:5:8 and the perimeter is 380 centimeters.

3. Therefore, you can write the following expression, where x is an integer:

3x+3x+5x+8x=380

4. Solve for x:

3x+3x+5x+8x=380\\19x=380\\x=\frac{380}{19}\\x=20

5. Therefore, the longest side is:

8x=8*20=160 (160 cm)

5 0
3 years ago
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A section of a boardwalk is made using 15boards. Each board is 9/1/4 inches wide. The total width of the section is 144 inches.
sleet_krkn [62]
If there are 15 boards there are 14 gaps in-between. 
But first, 15 boards each 9 and 1/4th inches so you get  a total of 138 inches and 3/4th
If you subtract that from 144 you get 5 inches and 1/4th. The remaining amount is the total of all of the distance from the spacing.
Then you divide that by 14 (number of gaps/spacing in-between.)
So you get .375 inches. (3/8)
So width of the spacing between each board is 3/8ths of a inch
4 0
3 years ago
Question 7 of 10<br> What is the length of BC in the right triangle below?
horsena [70]

Answer:

A

Step-by-step explanation:

Using Pythagoras' identity in the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

BC² = 9² + 12² = 81 + 144 = 225 ( take the square root of both sides )

BC = \sqrt{225} = 15 → A

7 0
2 years ago
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