3 years ago

X – y +z = 5 x + y + 2z = 19 x + y + z = 15

Mathematics

1 answer:

otez555 [7]3 years ago

8 0

Answer:

x=5,y=5,z=5

Step-by-step explanation:

x=15-y-z

15-y-z-y+z=5

15-2y=5

y=5

x+y+z=15

15-2y+y+z=15

15-10+5+z=15

z=5

x-y+z=5

x-5+5=5

x=5

You might be interested in

What’s the measure of A?

Mekhanik [1.2K]

Answer: x = 11

Step-by-step explanation:

Complementary angles = 90*

Set the two equations equal to 90. Solve

4x + 6 + 4x - 4 = 90

8x +2 = 90

8x = 88

x = 11

Plug it in to see if it makes equation true

4 (11) + 6 + 4 (11) - 4 = 90

44 + 6 + 44 - 4 = 90

50 + 40 = 90

90 = 90

5 0

3 years ago

The height of a cylinder is 5 centimeters. The diameter of the base of the cylinder is 16 centimeters. Find the lateral surface

soldier1979 [14.2K]

Answer:

Lateral surface area of the cylinder = $251.2 cm^2$

Step-by-step explanation:

Lateral surface area of he cylinder = $2*\pi*r*h$ i.e area of side surface.

$Height(h) = 5 cm$

$Diameter = 16 cm$

$radius(r)= 16/2= 8 cm$

Lateral surface area of the cylinder = $2*\pi *8*5$

$\pi =\frac{22}{7}=3.14$

L.S.A= $2*3.14*8*5$

L.S.A= $251.2 cm^2$

The lateral surface area of the cylinder with radius 8 cm and height 5 cm is $251.2 cm^2$

6 0

3 years ago

Help pls it’s really hard

slavikrds [6]

Answer:

1 acute and 2 right (the last option)

3 0

3 years ago

The graph of y = x^2 is translated 6 units upward

Paul [167]

Answer:

y = x^2 + 6

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

Please help 25 points and brainliest!

Doss [256]

Answer:

a = -29

Step-by-step explanation:

$12=\frac{a+5}{-2} \\\\-24=a+5\\a=-24-5\\a=-29$

1st step is to multiply -2 on both sides

6 0

3 years ago

Read 2 more answers