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2 years ago

Original price $3:29;markdown 35% What the value please help me

Mathematics

2 answers:

Naya [18.7K]2 years ago

8 0

Answer:

2.94

Step-by-step explanation:

3.29 - 35/100 = 2.94

denpristay [2]2 years ago

6 0

Need help on this too

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An equilateral triangle has sides of length 2 units. A second equilateral triangle is formed having sides that are 150% of the l

murzikaleks [220]

Answer:

The percent increase in the perimeter is 337.5%

Step-by-step explanation:

The easiest way to approach this problem is by using consecutively the simple rule of three.

If the first triangle has sides of length two then, we can compute the second triangle's sides length as follows:

2 units------100%

X units------150%

this way

$X = 2*\frac{150}{100}\\ X =2*1.5\\X=3units$ .

Now for the third triangle we repeat the same process

3 units------100%

X units------150%

getting that the length of the sides for the third triangle is

$X = 3*\frac{150}{100}\\ X =3*1.5\\X=4.5units$ .

Now for the last triangle we repeat the same process

4.5 units------100%

X units------150%

getting that the length of the sides for the last triangle is

$X = 4.5*\frac{150}{100}\\ X =4.5*1.5\\X=6.75units$ .

Now, we need to know the perimeter of the first and last triangle. This can be calculated as the sum of the length of the sides of the triangle.

For the first triangle

$P_{first}=2+2+2\\P_{first}=6$

and for the last triangle

$P_{first}=6.75+6.75+6.75\\P_{first}=20.25$ .

To compute the percent increase in the perimeter from the first to the fourth triangle we will use one last simple rule of three (this time the percentage will be the variable)

6 units------100%

20.25 units------X%

$X = 100\frac{20.25}{6}\\ X=337.5\%$ .

4 0

3 years ago

Keegan jogs laps around a park playground. The playground is 90m long and 35m wide. How many laps will it take him to jog 1 km?

VMariaS [17]

It will take 3 laps. 90*35=3150 1000 m = 1 km

8 0

3 years ago

If the sum of the interior angles is 720°, how many sides does the polygon have?

JulsSmile [24]

Answer:

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

The weight distribution of parcels sent in a certain manner is normal with mean value 17 lb and standard deviation 3.3 lb. The p

Yakvenalex [24]

Answer: The value of c would be 26.514 lb.

Step-by-step explanation:

Since we have given that

Mean = 17 lb

Standard deviation = 3.3 lb

At 99% level of significance, z = 2.58

So, it becomes,

$Z=\dfrac{X-\mu}{\sigma}\\\\2.58=\dfrac{X-17}{3.3}\\\\2.58\times 3.3=X-17\\\\8.514+17=X\\\\X=25.514$

So, the weight c would be

$c=25.514+1\\\\c=26.514$

Hence, the value of c would be 26.514 lb.

7 0

3 years ago

What is the volume of a certain cube? (1) The sum of the lengths of the edges of the cube is 36. (2) The surface area of the cub

german

Answer:

(1) The sum of the lengths of the edges of the cube is 36.

A cube has 12 equal edges. Sum = 36. Length of each edge = 36/12 = 3

Volume = 3*3*3 = 27

(2) The surface area of the cube is 54.

A cube has 6 identical faces. Area of each face = s^2 (s is the length of the side)

6s^2 = 54

s = 3

Volume = 3*3*3 = 27

Step-by-step explanation:

All you need to uniquely define a cube is any one measurement - length of a side/edge, area of a surface, volume etc. If you have any one of them, you can uniquely determine the others. So each statement alone is sufficient here.

To show how,

(1) The sum of the lengths of the edges of the cube is 36.

A cube has 12 equal edges. Sum = 36. Length of each edge = 36/12 = 3

Volume = 3*3*3 = 27

(2) The surface area of the cube is 54.

A cube has 6 identical faces. Area of each face = s^2 (s is the length of the side)

6s^2 = 54

s = 3

Volume = 3*3*3 = 27

8 0

3 years ago