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3 years ago

If 3x+13= 19, find the value of 4x +1

Mathematics

1 answer:

12345 [234]3 years ago

6 0

Answer:

It would be 8

Step-by-step explanation:

It would be six because 13 plus 3 is 16 and the answer was 19 so I added 3 more and I got 19. So that made me think that the value of x is 3. :)

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Solve for x in the equation 4×-32=0

sergejj [24]

Answer:

x = 8

Step-by-step explanation:

4x - 32 = 0

4x = 0 + 32

4x = 32

x = 32/4

x = 8

8 0

3 years ago

How to find the are of each regular polygon

Ghella [55]

Answer:

Hi there!

To find the area of a regular polygon, all you have to do is follow this simple formula: area = 1/2 x perimeter x apothem.

Apothem: a segment that joins the polygon's center to the midpoint of any side that is perpendicular to that side.

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4 years ago

A crate containing 4 boxes of Sour Patch Kids weighs 8.4 kg. The crate, when empty, weighs 5.2 kg. Using x to represent the weig

Leokris [45]

Answer:

(8.4-5.2)

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Can anyone help me ?

gtnhenbr [62]

The formula for the volume of a sphere is V=(4/3) (pi) r^3. if r is doubled then you get 2r as the radius and V=(4/3) (pi) * 8r^3 so the volume is eight times bigger than the original r value. if r is tripled the r =3r and (3r)^3 so the volume is 27 times bigger. If r is multiplied by n the radius is nr and (nr)^3 =n^3 r^3, Therefore, the volume is n^3 times bigger than the original.

7 0

3 years ago

A watch seller gained 20% by selling a watch for rupees 1260. what was its cost price and if we add gain 30% at what price shoul

vekshin1

Answer:

1365 rupees

Step-by-step explanation:

1. Approach

The easiest method to solve this problem is via the method of proportions. One can use a proportion to find the original price of the watch. Then one can find the price of the watch if the watch had a (30%) mark up, by using a proportion.

2. Find the original price

Remember, the general format of a proportion is the following:

$\frac{part}{total}=\frac{percent}{100}$

The following information is given:

The watch sold for (1260) rupees which is (120%) of the original price. Remember, there was a (20%) gain, meaning that the seller recovered (120%) of the price, in essence, the price of the watch, plus (20%) extra, thus (120%). Substitute these values into the proportion and solve,

$\frac{part}{total}=\frac{percent}{100}$

$\frac{1260}{total}=\frac{120}{100}$

Simplify,

$\frac{1260}{total}=\frac{120}{100}$

$\frac{1260}{total}=\frac{6}{5}$

Cross product,

$\frac{1260}{total}=\frac{6}{5}$

$(5)(1260)=(6)(total)$

Simplify,

$(5)(1260)=(6)(total)$

$6300=6*total$

Inverse operations,

$6300=6*total$

$1050=total$

3. Find the price if the mark up is (30%)

Now, one knows the original price of the watch. Set up a proportion to find the price of the watch if there is a (30%) mark up. Use the same logic to set up this proportion as was used to set up the last one. The (percent) will be (130%) because the new price of the watch is (130%) of the original watch.

$\frac{part}{total}=\frac{percent}{100}$

Substitute,

$\frac{part}{total}=\frac{percent}{100}$

$\frac{part}{1050}=\frac{130}{100}$