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Ksenya-84 [330]
3 years ago
12

Y=_x+4 x + 2y = 8 How many solutions dose this linear system have

Mathematics
1 answer:
jeyben [28]3 years ago
6 0

Answer:

X=-1, y=4

Step-by-step explanation:

y = x + 4 \\ x + 2y = 8 \\  =  =  =  =  =  =  =  =  =  =  =  = \\ y - x = 4 \\ x + 2y = 8

by using eliminating property

3y = 12 \\ y = \frac{12}{3}    = 4

by substitution

X=-1

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Find the average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.
kvasek [131]

Answer:

Average rate of change = 2

Step-by-step explanation:

Find the average rate of change for f(x) = x^2 − 3x − 10 from x = −5 to x = 10.


f(-5) = (-5)^2 − 3(-5) − 10 = 25 + 15 - 10 = 30

f(10) = 10^2 − 3(10) − 10 = 100 - 30 - 10 = 60

Average rate of change:

   f(10) - f(-5)                     60  -  30                         30

-------------------- =   ------------------------------- =   -----------------------  = 2

     10 - (-5)                            15                               15

   

4 0
3 years ago
Question 8 (1 point) Mrs. Hernandez is making a circular skirt for her daughter's Valentine banquet. She will glue a piece of se
lesya692 [45]

Answer: 113 inches

Step-by-step explanation:

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The closest measurement needed for the sequin trim will then be:

= 2πr

= 2 × 3.142 × 18

= 113.112

= 113 inches

4 0
3 years ago
Is 6/8 equal to 75 percent
slega [8]
6/8 is equivalent to 3/4, and 3/4=.75, and .75/100=75 percent. So yes, it is.
8 0
3 years ago
Read 2 more answers
Vertical angles are...? i
gregori [183]

Answer:

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Step-by-step explanation:

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4 years ago
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