Solve the system of linear equations by graphing. y=-x+4. y= 2x – 8

Mathematics

1 answer:

drek231 [11]2 years ago

7 0

Step-by-step explanation:

suppose,x=1,2 .so y=1+4=5,2+4=6...eq..(I)

and y=2×1-8=-6,y=2*×2-8=-4

now plot in graph where they intercept with each other i.e x and y

I could plot but it's difficult here..and remember u can suppose any point as x for y

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£240 is divided between Sara , Gordon and Makachy so that sara has twice as much as gordon and Gorgon gets three times as much a

ivanzaharov [21]

Answer:

Gordon gets £72

Step-by-step explanation:

£240....together

Sara.....2*(3x)

Gordon.....3x

Makachy......x

2*(3x)+3x+x=240

6x+3x+x= 240

10x=240/10

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Gordon 3*24= 72

3 0

3 years ago

What property is 7+(4+6)=7+n

Ket [755]

This looks like "half" a property. I'm assuming you mean something that looks like this:

IF a + b = a + c, THEN b = c. In the expression in your problem, the role of a is being played by 7. The role of b is played by (4 + 6), and the role of c is played by n.

The conclusion would be that 4 + 6 = n.

But you asked about what the property is called. The likely name is the subtraction property of equality. How did we go from a + b = a + c to the conclusion b = c? We subtracted a from both sides of the equation.

7 0

2 years ago

Question 3(Multiple Choice Worth 2 points)

Lilit [14]

The equivalent expression is seven-fifths squared times one-third cubed. Then the correct option is D.

<h3>What is an equivalent expression?</h3>

The equivalent is the expression that is in different forms but is equal to the same value.

Five-sevenths squared times one-third raised to the power of negative three all raised to the power of negative one.

Convert the sentence into numerical form.

$\rm \rightarrow \left [ \left (\dfrac{5}{7} \right )^2 \times \left ( \dfrac{1}{3}\right )^{-3} \right ] ^{-1}$