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3 years ago

Decide which of the two points lies on the graph something line X+3y=-2 A. -6,6 B. 4,-2

Mathematics

2 answers:

sergey [27]3 years ago

7 0

X + 3y = -2

(4) + 3(-2) = -2

4 + -6 = -2

-2 = -2

True

B) 4, -2 is your answer

hope this helps

MrRa [10]3 years ago

3 0

B. (4,-2)
Plug them into the line's equation and you get...
4+3(-2)=-2
4-6=-2
-2=-2

Hope this helps!

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A gold coin appreciated in value from $200.00 to $475.00 in 6 years. Find the yearly rate of appreciation. Show or explain all w

Travka [436]

Answer:

16%

Step-by-step explanation:

To solve this we are using the standard growth equation:

$y=a(1+b)^x$

Were

$y$ is the final value after $x$ years

$a$ is the initial value

$b$ is the growth factor (yearly rate of appreciation in our case) in decimal form

$x$ is the time in years

We know from our problem that gold coin appreciated in value from $200.00 to $475.00 in 6 years, so $y=475$ , $a=200$ , and $x=6$ .

Let's replace the values in our equation and solve for $b$ :

$y=a(1+b)^x$

$475=200(1+b)^6$

$\frac{475}{200} =(1+b)^6$

$2.375=(1+b)^6$

$\sqrt[6]{2.375} =\sqrt[6]{(1+b)^6}$

$1+b=\sqrt[6]{2.375}$

$b=\sqrt[6]{2.375}-1$

$b=0.155$

which rounds to

$b=0.16$

Since our appreciation rate is in decimal form, we need to multiply it by 100% to express it as percentage:

0.16*100% = 16%

We can conclude that the yearly appreciation rate of our gold coin is approximately 16%

3 0

3 years ago

Whats the fraction decimal and percent for 15 out of 9

creativ13 [48]

1 2/3, 1.66, 166.66%

btw, put a forever hat above the last 6's in 1.66 and 166.66

a forever hat is just a horizontal line above a number to indicate it goes on forever.

7 0

3 years ago

Plz help me with this problem

mixer [17]

I don’t know what is your problem is

7 0

4 years ago

Two apples and three peaches cost $1.65. three apples and two peaches cost $1.60. what is the cost of one peach

marta [7]

Apples = $.30
Peaches = $.60

You can get this by setting up a system of equations that looks like this.

2x + 3y = 1.65
3x + 2y = 1.60

Where x is the amount of apples and y is the number of peaches. Then you can solve using any of the methods (I would suggest elimination for ease).

7 0

3 years ago

HARD BUT LOTS OF POINTS PLS HELP FIRST GET BRAINLIEST.<br><br> Find the area of the figure below.

viva [34]

Answer:

132

Step-by-step explanation:

the top rectangle is 28

the middle rectangle is 56

each of the triangles are 24

48+28+56

7 0

3 years ago

Read 2 more answers