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2 years ago

X+2y=-14. X-y=13. Solve the equation by elimination method

Mathematics

1 answer:

Akimi4 [234]2 years ago

5 0

Eliminate 2nd equation from 1st equation here:

3y = -27

y = -27/3

y = -9

Now, substitute the value in 2nd equation, x - (-9) = 13

x + 9 = 13

x = 13 - 9 = 4

In short, Your Answer would be: (4, -9)

Hope this helps!

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If DM=35, what is the value of r? Where DG is r+5 and GM is 3r-14

AlekseyPX

R=17.5
DG=22.5
GM=38.5

8 0

3 years ago

The distribution of the amount of money spent by first-time gamblers at a major casino in Las Vegas is approximately normal in s

Leya [2.2K]

Answer:

$720

Step-by-step explanation:

Given :

Mean, m = 600

Standard deviation, s = 120

Z = (x - m) / s

P(Z > x) = 84%

P(Z > x) = 0.84

Zscore corresponding to P(Z > x) = 0.84 will be -0.994

Hence,

-0.994 = (x - 600) / 120

120 * -0.994 = x - 600

119.28 = x - 600

119.28 + 600 = x

719.28 = x

Hence,

X = $720

4 0

3 years ago

Find the surface are of the cylinder in terms of pi

Andrej [43]

Hello!

To find the surface area of a cylinder you use the equation

$SA = 2 \pi rh + 2 \pi r^{2}$

SA is surface area
r is radius
h is height

PUt in the values you know

$SA = 2 \pi (7)(18) + 2 \pi * 7^{2}$

Square the number

$SA = 2 \pi (7)(18) + 2 \pi * 49$

Multiply 7 and 18

$SA = 2 \pi * 126 + 2 \pi * 49$

Multiply 126 by 2

$SA = 252 \pi + 2 \pi * 49$

Multiply the 49 by 2

$SA = 252 \pi + 98 \pi$

Add

$SA = 350 \pi$

The answer is $A)350 \pi cm^{2}$

Hope this helps!

7 0

3 years ago

Equation:y=5/3x+5<br> Slope:5/3<br> y-intercept:?

Anettt [7]

The y intercept will be 5

4 0

3 years ago

Read 2 more answers

F(x)=12x2-4x-8. G(x)=11x-6

AlekseyPX

Answer: Second option.

Step-by-step explanation: