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Elan Coil [88]
2 years ago
11

One box of crackers costs $1.75. The crackers are advertised as “3 boxes for $5.25.” Which proportion can be used to represent t

he cost of the crackers?
Mathematics
2 answers:
Art [367]2 years ago
6 0

Answer:

\frac{1}{3}=0.33    

Step-by-step explanation:

Given : One box of crackers costs $1.75. The crackers are advertised as “3 boxes for $5.25.”

To find : Which proportion can be used to represent the cost of the crackers?

Solution :

The cost of 1 box is = $1.75

The cost of 3 boxes is = $5.25

A proportion is when two ratios are equal.

Ratio of boxes is equal to the ratio of cost of crackers.

Therefore,  1 : 3 = 1.75 : 5.25    

In Proportion it can be written as \frac{1}{3}=\frac{1.75}{5.25}

This is true also, as \frac{1}{3}=0.33

\frac{1.75}{5.25}=0.33

Daniel [21]2 years ago
5 0
A.  1/1.75 = 3/5.25 


Ignore this part I'm just trying to get at least 20 characters.
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Daniel [21]

Answer:

y=\frac{3}{2}x-5

Step-by-step explanation:

There are a couple of ways to solve this, depending on what you already know.

Point-Slope Form

y-y_1=m(x-x_1)  where <em>m</em> is the slope and (x_1, y_1) is a point on the line.

First, calculate the slope using the two given points (x_1, y_1), (x_2, y_2).

m=\frac{y_2-y_1}{x_2-x_1}=\frac{1-(-2)}{4-2}=\frac{3}{2} .

Fill in the point-slope pattern

y-(-2)=\frac{3}{2}(x-2) \\ y+2=\frac{3}{2}x-3 \\ y=\frac{3}{2}x-5

There's the equation in slope-intercept form (y=mx+b).

Slope-Intercept Form

Use y=mx+b directly.

Find the slope just like the above, so m=\frac{3}{2}.

Now, plug one of the points (either one!) together with <em>m</em> into

y=mx+b\\-2=\frac{3}{2}(2)+b \\ -2=3+b \\ b=-5

Now you know the value of <em>b</em>, so the equation for the line is

y=\frac{3}{2}x-5

3 0
2 years ago
Let x = 8.99999 . (a) Is x &lt; 9 or is x = 9? x &lt; 9 It is neither; x &gt; 9 x = 9 x &lt; 9 and x = 9 It cannot be determined
qaws [65]

Answer: idk

Step-by-step explanation:

idk

4 0
2 years ago
Aileen can read 1.5 pages for every page her friend can read. Aileen's mom was very excited and she said to Aileen: "So, if your
dalvyx [7]

No, Aileen's mom is incorrect. Aileen can read 30 pages in the same time period as her friend reads 20 pages.

To get this answer, you multiply 20 by 1.5

20 x 1.5 = 30

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2 years ago
Read 2 more answers
Malcolm and Ravi raced each other.
Semenov [28]

Malcolm maximum speed is 200 km/h and Ravi maximum speed is 320 km/h

Step-by-step explanation:

Lets assume Malcolm maximum speed to be M km/h and Ravi  maximum speed to be R km/h

Average of their maximum speed is; (M+R)/2 =260 km/h

This can be simplified to M+R= 260*2

M+R = 520.......................................(I)

When Malcolm's speed is doubled,

2M=R+80 km/h ----------------------(ii)

The two equations are;

M+R = 520 ------ M=520-R ----(i)

2M=R+80 ---------------------------(ii)

Replacing M with (i) above

2M=R+80

2(520-R) =R+80

1040 -2R =R+80

1040-80 = R+2R

960 = 3R

960/3 =R

320 =R

M+R =520

M=520-320 =200

Malcolm maximum speed is 200 km/h and Ravi maximum speed is 320 km/h

Learn More

Simultaneous equations:brainly.com/question/12919422

Keywords: Average, maximum, speeds, doubled,

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3 0
2 years ago
A steel pipe 100 cm long has an outside diameter of 2 cm and an inside diameter of 1.8 cm. If thee density of the steel is 7.8 g
ELEN [110]

Answer:

The mass of the pipe is 465\ g

Step-by-step explanation:

step 1

Find the volume of the steel pipe

The volume is equal to the area of outside circle minus the area of inside circle, multiplied by the length of the pipe

so

V=\pi [r2^{2}-r1^{2}]L

we have

r2=2/2=1\ cm ---> the radius is half the diameter

r1=1.8/2=0.9\ cm ---> the radius is half the diameter

L=100\ cm

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substitute

V=(3.14)[1^{2}-0.9^{2}](100)=59.66\ cm^{3}

step 2

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The mass is equal to the density multiplied by the volume

so

m=7.8(59.66)=465\ g

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2 years ago
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