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Fofino [41]
3 years ago
9

I’m confused on this one

Mathematics
1 answer:
scoray [572]3 years ago
6 0
The general form of slope-intercept form is y=mx+b

m stands for the slope
b stands for the y intercept

They are giving you m so you can replace m with -4/5 ⇒ y=-4/5x+b

Now you just need to find b. They also give you the point (0,-3). This means that when x is 0, y is equal to -3.

Lets go back to y=-4/5x+b and replace x with 0 and y with -3.
⇒ -3=(-4/5)(0) + b
⇒ -3= 0+b
⇒ -3=b 
⇒ b=-3

Now that you have m and b, you can find your final answer in the form y=mx+b
⇒ y=-4/5x + (-3)
⇒ y= -4/5x - 3


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Seth is trying to find the unit price for a package of blank compact discs on sale at 10 for $5.49 . Find his mistake and correc
andriy [413]

The unit price of the disk is $0.549

<h3>Unit price of goods</h3>

The unit price of goods are the price of one portion of the goods in question.

From the given question,  a package of blank compact discs on sale at 10 for $5.49, this can be expressed as;

10 disc = $5.49

The unit price of the disc is the price of just one of the disc. The unit price is expressed as;

1 disc = x

Find the ratio

10/1 = 5.49/x

Cross multiply

10x = 5.49

Divide both sides by 10

10x/10 = 5.49/10

x = $0.549

Hence the unit price of the disk is $0.549

Learn more on unit price here: brainly.com/question/825113

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6 0
2 years ago
Hello Solving Equations Puzzle ​
ludmilkaskok [199]

Green crescent should be 11
2+2+11=15
Pink trapezoid should be 15
30-15=15
15=15
6 0
3 years ago
Read 2 more answers
Dean is comparing prices on ground beef. Store A is selling 5 pounds of ground beef for $23.49. Store B is selling 8 pounds of g
lora16 [44]

Store B is offering the better deal on ground beef

Step-by-step explanation:

Dean is comparing prices on ground beef

  • Store A is selling 5 pounds of ground beef for $23.49
  • Store B is selling 8 pounds of ground beef for $36.96

We need to know which store is offering the better deal on ground beef

To find the better deal we must to find the unit price of each store

The unit price = total price ÷ number of pounds

∵ Store A is selling 5 pounds of ground beef for $23.49

∴ The unit price of Store A = 23.49 ÷ 5 = $4.698

∴ The unit price of Store A is $4.698 per pound

∵ Store B is selling 8 pounds of ground beef for $36.96

∴ The unit price of Store B = 36.96 ÷ 8 = $4.620

∴ The unit price of Store B is $4.620 per pound

∵ $4.620 < $4.698

∴ The unit price of Store B is less than the unit price of Store B

∴ Store B is cheaper than Store A, then it is offering the better deal

Store B is offering the better deal on ground beef

Learn more:

You can learn more about the word problems in brainly.com/question/317697

#LearnwithBrainly

4 0
3 years ago
The variable Z is inversely proportional to X. When X is 3, Z has the value 6.3333333333333. What is the value of Z when X = 8 R
sveta [45]
Inverse variation is of the form y=k/x or if you prefer yx=k.

z=6.3 bar  I assume you mean 6.33333333 forever

10z-z=63.3333...-6.3333

9z=57

z=57/9  (exact)

Now back to the problem...

xz=k, we are told x=3 and we have shown z=57/9 so we can solve for k, the constant of variation

k=3(57/9)=19

So our equation is:

xz=19, now we wish to know what z is when x=8 so

8z=19  divide both sides by 8

z=19/8  

z=2.375  (exact, no rounding necessary)
8 0
3 years ago
Find the area of the shaded region.
Fofino [41]

Answer:

21.46 cm²

Step-by-step explanation:

So we need to find the r for the circle

r=10/4=5/2

so  the area of one circle is Ac=πr²

Ac=π(5/2)²=25/4π

and there are 4 of them: 25/4π*4=25π=78.54

the area of square is 10²=100

100-78.54=21.46 cm²

4 0
3 years ago
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