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enot [183]
3 years ago
9

Mark’s brother is five years older than Mark. Their combined ages add up to 23. How old is Mark? Write an equation to help you s

olve.

Mathematics
1 answer:
Tema [17]3 years ago
7 0
Should be this .. hoped this helped:)

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What is the slope of the line with equation <br>-3x+6y=12
notka56 [123]

Note the slope intercept form: y = mx + b, in which m = slope

Isolate the y. Note the equal sign, what you do to one side, you do to the other. First, add 3x to both sides

-3x (+3x) + 6y = (+3x) + 12

6y = 3x + 12

Fully isolate the y. Divide 6 from both sides (and to all terms)

(6y)/6 = (3x + 12)/6

y = (3x)/6 + (12)/6

Simplify

y = (1/2)x + 2

y = 0.5x + 2 is your equation.

The slope is direclty left of the x (or the m variable). In this case, it is 0.5

0.5 is your answer (or 1/2 if wanted in fraction form)

~

3 0
3 years ago
Read 2 more answers
Write the equation of the line that passes through (-1,8) and is parallel to the graph of y = 4x - 2
NikAS [45]

Answer:

When a line is parallel to another line, they have the same slope. So far the equation would be, y=4x+b. To find the value of b, substitute the given point into the equation.

8=4(-1)+b

8=-4+b

b=12

So, the equation of the line is y=4x+12.

:)

8 0
2 years ago
The graph shows the relationship between the number of correct answers given by Mini and the number of marks she scored. How man
Alborosie

Answer:

18

Step-by-step explanation:

8 0
3 years ago
Identify the zero that has a multiplicity greater than one:<br> f(x) = (x - 2)(x + 2)(x – 5)
nadya68 [22]

Answer:

2(multiplicity 2)

Step-by-step explanation:

2 is repeated twice in the function.

4 0
3 years ago
What substitution should be used to rewrite 4x^4-21x^2+20 =0 as a quadratic equation
marysya [2.9K]

I would substitute y = x^2

4y^2 -21y+20=0

7 0
3 years ago
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