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Brums [2.3K]
3 years ago
11

Solve the system by substitution. -5x+2y=-42 6x=y

Mathematics
1 answer:
Drupady [299]3 years ago
6 0

Step-by-step explanation:

since y=6x

by substitution

-5x+ 2 (6x)= -42

-5x+ 12x=-42

7x= - 42

divide both sides by 7

x= 6

y=6x

y =6*6

y=36

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49/63 reduced fraction
marin [14]
49 / 7 = 7
63 / 7 = 9,
You place 7 over 9 and you get your answer!

7/9
3 0
4 years ago
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Which of the following pairs are not equivalent statements?
lesya692 [45]

Answer:

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4 0
3 years ago
What's the product of 3 2⁄3 and 14 2⁄5 ?
kodGreya [7K]

Here is your answer:


3 2/3 = 11/3

14 2/5 = 72/5


11 × 72 = 792

3 × 5 = 15


792/15 divided into 52\frac{12}{15}

12 ÷ 3 = 4

15 ÷ 3 = 5


"= 52 4/5 into a improper fraction is 264/5"


Hope this helps!

3 0
3 years ago
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Find the average rate of change of the function defined by the following table. x y -2 -5 2 35 6 75 10 115
Pani-rosa [81]

By definition we have that the average rate of change of the function is:

 AVR =  \frac{f(x2) - f(x1)}{x2 - x1}

 Evaluating the function for the complete interval we have that the AVR is given by:

 AVR = \frac{115 - (-5)}{10 - (-2)}

 Rewriting we have:

 AVR = \frac{115+5}{10+2}

 Simplifying the expression we have:

 AVR = \frac{120}{12}

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 Answer:

 the average rate of change of the function defined by the table is:

 AVR = 10

6 0
3 years ago
50 points help asap!
Luden [163]

Answer:

58 feet.

Step-by-step explanation

Since the angle given is across from the length we need to find and we are given the hypotenuse, we use sine.

Sin(46)=x/80 where x is the height of the triangle and 80 is the hypotenuse.

80sin(46)=x

x=57.55 or 58 feet.

8 0
3 years ago
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