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lianna [129]
3 years ago
14

HELP PLS HELPP ITS ONLY TWO SMALL QUESTIONS SUPER QUICK

Mathematics
2 answers:
Zanzabum3 years ago
8 0

Answer:

Y =-7 and X -3

Solution:

4x-2y=2

2(2x-y)=2⋅1

2x-y=1

and y+4=x

∴y-x=-4

Suppose,

2x-y=1→(1)

and -x+y=-4→(2)

Taking equation (1), we have

2x-y=1

⇒y=2x-1→(3)

Putting y=2x-1 in equation (2), we get

-x+y=-4

-x+(2x-1)=-4

⇒-x+2x-1=-4

⇒x-1=-4

⇒x=-4+1

⇒x=-3

⇒x=-3→(4)

Now, Putting x=-3 in equation (3), we get

y=2x-1

⇒y=2(-3)-1

⇒y=-6-1

⇒y=-7

∴y=-7andx=-3

____ [38]3 years ago
7 0

Answer:

y=-7 and x=-3

Step-by-step explanation:

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Katen [24]
The volume of this prism is 
V=l*w*h
rewrite the mixed number as fractions
V= 11 3/5* 9* 12 1/2=
V= 58/5 *9/1* 24/2
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V=12528/10=1252 8/10 m^3
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4 0
3 years ago
Hi can someone help me w this
scoray [572]

Answer:

336 ft³ or 336 cubic feet

Step-by-step explanation:

Volume = Area triangle * height

Area triangle = 1/2(8 x 14)

Area triangle = 1/2(112) = 56 ft²

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If my answer is incorrect, pls correct me!

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8 0
3 years ago
In January, the depth of a lake was 900 feet. In August, the depth of the lake was 810 feet. What is the percentage decrease of
andriy [413]
OA because 900 x 0.9 = 810
5 0
3 years ago
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Good morning can anybody help me out with this assignment please and thanks! \
garri49 [273]

Good Morning hope this helped.

Answer:

1: The cost of twelve bottles is $24 cause 12x2=24.

2: The ratio is 24/12 or 2/1

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5 0
3 years ago
You are laying in a field flying a kite and have let out 60 meters of string. The kites angle of elevation with the ground is 40
IRINA_888 [86]

Answer:

38.6m

Step-by-step explanation:

Theory of solving angle of elevation problem bus to take it as a right angle triangle.

The length of the the rope is the hypotenuse and the angle formed is the hypotenuse angle.

To determine the height , we take the side as opposite the angle.

Sin (angle) = height/hypotenus

Sin40= height/60

0.6428 *60 = height

38.568 = height

Approximately 38.6m

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