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3 years ago

10

2x+y=4 -2x+y=-4 Answer for this equations and inequalities problem please

1 answer:

Elena-2011 [213]3 years ago

8 0

Answer:

(2,0); x = 2; y= 0

Step-by-step explanation:

add the system and u get y = 0. substitute in the first equation and u get x = 2

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2. A package of ground beef costs $6.98. The price per pound is $3.86. How many pounds of ground beef are in the package? Round

Cerrena [4.2K]

1.81 pounds
you divide 6.98/3.86

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3 years ago

An industrial printing machine printed 714 pages in 3

crimeas [40]

Answer:

238 pages

Step-by-step explanation:

So you can set up a proportion for this one:

714pages/3minute=x pages/1minute

Solve for X by dividing 714 by 3 you get 238pages

8 0

3 years ago

Read 2 more answers

Use the equation and type the ordered-pairs. y = log 3 x {(1/3, a0), (1, a1), (3, a2), (9, a3), (27, a4), (81, a5)

vagabundo [1.1K]

Answer:

Considering the given equation $y = log_{3}x\\$

And the ordered pairs in the format $(x, y)$

I don't know if it is log of base 3 or 10, but I will assume it is 3.

For $(\frac{1}{3}, a_{0} )$

$x=\frac{1}{3}$

$y=a_{0}$

$y = log_{3}x\\y = log_{3}(\frac{1}{3} )\\y=-\log _3\left(3\right)\\y=-1$

So the ordered pair will be $(\frac{1}{3}, -1 )$

For $(1, a_{1} )$

$x=1$

$y=a_{1}$

$y = log_{3}x\\y = log_{3}1\\y = log_{3}(1)\\Note: \log _a(1)=0\\y = 0$

So the ordered pair will be $(1, 0 )$

For $(3, a_{2} )$

$x=3$

$y=a_{2}$

$y = log_{3}x\\y = log_{3}3\\y = 1$

So the ordered pair will be $(3, 1 )$

For $(9, a_{3} )$

$x=9$

$y=a_{3}$

$y = log_{3}x\\y = log_{3}9\\y=2\log _3\left(3\right)\\y=2$

So the ordered pair will be $(9, 2 )$

For $(27, a_{4} )$

$x=27$

$y=a_{4}$

$y = log_{3}x\\y = log_{3}27\\y=3\log _3\left(3\right)\\y=3$

So the ordered pair will be $(27, 3 )$

For $(81, a_{5} )$

$x=81$

$y=a_{5}$

$y = log_{3}x\\y = log_{3}81\\y=4\log _3\left(3\right)\\y=4$

So the ordered pair will be $(81, 4 )$

4 0

3 years ago

What is the midpoint of the line segment with endpoints (3.2, 2.5) and<br> (1.6, -4.5)

jok3333 [9.3K]

Answer:

(2.4, -1)

Step-by-step explanation:

Using midpoint formula plug in the info (x1+x2)/2, (y1+y2)/2

8 0

2 years ago

Trail mix sold in 1 Lb bags. Mary will buy trail mix for 15 members and each gets 2/5 pound bag. How many 1 lb bags should she b

solong [7]

Answer:

Mary should buy 6 bags

Step-by-step explanation:

To find the answer multiply $\frac{2}{5}$ by 15

$\frac{2}{5}*15=6$

So 6 Ib of trail mix will be perfect for the whole group

5 0

3 years ago