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Anna35 [415]
4 years ago
10

I'm lost!! please help!

Mathematics
2 answers:
vladimir1956 [14]4 years ago
7 0
X=9 and y=-3 if you need help comment back and i would love to help!
boyakko [2]4 years ago
6 0
Subtract both equations to get : -3y=9 , y=-3

insert y-value in one of the equations:

x+4(-3) = -3
x-12=-3
x=9

so, x= 9,  and y=-3
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ddd [48]

Answer:

mabye the reflixive prop

Step-by-step explanation:

6 0
3 years ago
An elliptical culvert is 3.5 feet tall and 6 feet wide. It is filled with water to a depth of 0.95 feet. Find the width of the s
maks197457 [2]

Answer:

W_s \approx5.3

Step-by-step explanation:

From the question we are told that

Height H=3.5ft

Weight W= 6ft

Depth  D=0.95ft

Generally the equation for ellipses is given as

\frac{x^2}{a^2} +\frac{y^2}{b^2} =1

Where

b=H/2\\b=3.5/2\\Therefore\\b=1.75\\a=W/2\\a=6/2\\Therefore\\a=3\\

\frac{x^2}{3^2} +\frac{y^2}{1.75^2} =1

Generally to find y in the equation \frac{x^2}{a^2} +\frac{y^2}{b^2} =1

y=-b+d

y=-1.75+0.95

y=-0.8

Therefore

\frac{x^2}{3^2} +\frac{(0.8)^2}{1.75^2} =1

\frac{x^2}{3^2} =1-\frac{(0.8)^2}{1.75^2}

\frac{x^2}{3^2} =1-0.2089795918

X^2 =3^2(1-0.2089795918)

X^2 =7.119183674

X =\sqrt{7.119183674}

X =2.66817984

Therefore the width of the given stream is

W_s=2.66817984*2

W_s=5.33635968

W_s \approx5.3

3 0
3 years ago
Jim rented a truck for one day . There was a base fee of $18.95 and there was an additional charge of 74 cents for each mile dri
Oksana_A [137]

Answer:

136 miles

Step-by-step explanation:

subtract $119.59 with how much he rented the truck for, which is $18.95 which makes his money at $100.64, then divide by how much each mile costed which was 74 cents

which gives you 136 so 136 miles.

Hope this helps :)

8 0
2 years ago
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seropon [69]
The second is true answer.
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otez555 [7]

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7 0
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