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pickupchik [31]
3 years ago
7

A suit is on sale for 71% off. The sale price is $121.80 what is the regular price?

Mathematics
2 answers:
mr Goodwill [35]3 years ago
6 0

Answer:

$420

Step-by-step explanation:

Let the regular price be represented by r.  Then:

(1.00 - 0.71)r = $121.80, or

0.29r = $121.80.

Solving for r by dividing both sides of this equatin by 0.29, we get:

r = $121.80 / 0.29 = $420.

The regular price of the suit was $420.

Art [367]3 years ago
4 0

Answer: I’m pretty sure it’s 541.8

Step-by-step explanation:

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A political pollster wants to know what proportion of voters are planning to vote for the incumbent candidate in an upcoming ele
balandron [24]

Answer:

1.\ \ np\geq 10\\\\2.\ \ n\geq 10x

Step-by-step explanation:

-Let x be the sample size and n the population size

-The conditions for a one-sample proportion z-test are:

-The sample is randomly selected from the population.

-The sample size is greater than or equal to ten times the population size:

n\geq 10x\\\\n=2000\\x=150\\10x=1500\\\therefore n\geq 10x

-The expectation np is greater than or equal to 10:

np\geq 10\\n=2000, p=0.6\\np=1200\\\\Hence, np\geq 10

5 0
3 years ago
Please help with this it’s due today
kramer
10/16 is the correct answer
7 0
3 years ago
Read 2 more answers
Is anyone able to give a step by step process to this?
Thepotemich [5.8K]

Answer:

The value of y is 3 cm.

Step-by-step explanation:

Given,

Perimeter of triangle = 29\ cm

Solution,

Lets redraw the triangle with nomenclature ABC, given in the attachment.

∴P(ΔABC) = 29 cm  (P stands for perimeter)

Length of AB = y+9

Length of BC = 2y

Length of CA = 4y-1

Now, we all know that the perimeter of a triangle is sum of all the three sides of triangle.

P(ΔABC) = Length of AB+Length of BC+Length of CA

On substituting the values, we get;

(y+9)+2y+(4y-1)=29\\y+2y+4y+9-1=29\\7y+8=29\\7y=29-8\\7y=21\\y=\frac{21}{7} =3\ cm

Length of AB =y+9=3+9=12\ cm

Length of BC =2y=2\times3=6\ cm

Length of CA =4y-1=4\times3-1=12-1=11\ cm

Hence the value of y is 3 cm.

8 0
3 years ago
The hypotenuse of a right triangle is 16 ft longer than the length of the shorter leg. If the area of this triangle is exactly 1
yarga [219]

Answer:

  A.  26 ft

Step-by-step explanation:

You might recognize that this triangle is a 5-12-13 triangle scaled up by a factor of 2. If so, you know immediately, that the hypotenuse is 2×13 = 26 feet in length.

__

If you're not so lucky, you can write equations involving the lengths of the legs of the triangle. Let those be x and y, with x being the shorter leg. Then the Pythagorean relation tells you ...

  x² + y² = (x+16)²

and the area relation tells you ...

  120 = (1/2)xy

Using the second equation to write an expression for y, we have ...

  y = 240/x

Substituting this into the first equation gives ...

  x² + (240/x)² = (x+16)²

  (240/x)² = 32x +256 . . . . subtract x²

  1800 = x²(x +8) . . . . . . . . .multiply by x²/32

This is a cubic with one real root. It can be solved several ways. I like "graphing" as it is quick and easy. Trial and error also works. The factors of 1800 include 10²·18, so it is clear that x=10 is the solution.

The hypotenuse length is x+16, so is 26 feet.

___

The attachment shows the graphical solution of the original two equations. This tells you the legs of the triangle are 10 and 24, so the hypotenuse will be 10+16 = 26. The 10-24-26 triangle is recognizable as a scaled version of the 5-12-13 triangle often used in math problems.

4 0
3 years ago
Help me get the answer and explain your answer.
max2010maxim [7]

Answer:

Step-by-step explanation:

eq. of any line with slope m and passing through (x1,y1)  is

y-y1=m(x-x1)

reqd. eq. is

y-1=3/4(x-2)

4y-4=3x-6

4y=3x-6+4

4y=3x-2

so 3.

3 0
3 years ago
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