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Romashka [77]
3 years ago
7

Which of the graph below passes the vertical line test ?

Mathematics
1 answer:
ExtremeBDS [4]3 years ago
5 0
The answer is choice A
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2x+4y+2z= -8<br> 5y-2z= 0<br> 4z= -20
kondaur [170]

Answer:

The given solution for the system is x = 5, y = -2 and z = -5

Step-by-step explanation:

Here, the given set of equations are:

2 x + 4 y +2 z = -8

5 y- 2 z = 0

4 z = -20

Now, simplifying each question one by one ,we get:

Simplifying third equation for the value of z:

4 z = -20 ⇒ z  = -20 / 4 = - 5

or, z =  -5

Simplifying second equation for the value of y:

Substitute the value of z  = -5 in (2) , we get

5 y- 2 z = 0    ⇒ 5 y - 2(-5)  = 0

or, 5 y + 10 = 0

or, 5 y = -10

or, y  =  -10/5 = -2

⇒ y = -2

Simplifying first equation for the value of x:

Substitute the value of z  = -5 and y  = -2 in (1) , we get

2 x + 4 y + 2 z = -8  ⇒ 2 x + 4 (-2) + 2 (-5) = -8

or,  2 x - 8 - 10 = -8

or, 2 x = 10

x = 10 / 2  = 5, or x  = 5

Hence, the given solution for the system is x = 5, y = -2 and z = -5

7 0
4 years ago
6/15 in simplest form
Evgen [1.6K]
6/15 in simplest form is 2/5.

Divide the numerator and denominator by 3. :)

God bless
3 0
4 years ago
A BANK EXCHANGES BRITISH CURRENCY FOR SINGAPORE CURRENCY AT THE RATE OF $3.20 TO £1. CALCULATE IN £ THE AMOUNT EXCHANGED FOR $1,
lapo4ka [179]

Answer: £485

Step-by-step explanation: Given that the rate is $3.20 to £1. 

Exchange of $1,600 will be

1600/3.20 = £500

With commission on 3%

3/100 × 500 = 15

Take away £15 from £500

500 - 15 = 485

4 0
3 years ago
Look I got the Drip
WINSTONCH [101]

Answer:

الحقيقة لن تكون جيدة جدًا

5 0
3 years ago
Which equation can be solved using the expression StartFraction negative 3 plus-or-minus StartRoot (3) squared + 4 (10) (2) EndR
katen-ka-za [31]

Answer: B.  2 = 3x + 10x2

Step-by-step explanation:

This is the concept of quadratic equations; We required to find the type of equation that can be solved using the model that has been used to solve the equation such that the answer is:

[-3+-sqrt(3^2+4(10)(2))]/(2(10))

The formual that was applied here was a quadratic formula given by:

x=[-b+\-sqrt(b^2-4ac)]/2a

whereby from the our substituted values above,

a=10,b=3 and c=-2

such that the quadratic equation will be:

10x^2+3x-2 

3 0
4 years ago
Read 2 more answers
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