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3 years ago

15

What do I need to multiply by to decrease by 42%?

2 answers:

Arisa [49]3 years ago

7 0

Hi there!~

So first off we need to use a variable to solve the given percentage, lets use "y" (This can also be used as any other letter, most commonly can be known as "x")

The formula is " $\frac{100-y}{100}$ "

And because we are increasing, we would use that ^

So for us we get 0.58 as an answer.

Leona [35]3 years ago

4 0

32.88.36 72 thats your awnser

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Find polar coordinates of the point whose cartesian coordinates are given. (-2√3 , 2)

gavmur [86]

The polar coordinates of the point whose cartesian coordinates is (-2√3 , 2) is (4cos210, 4sin210)

<h3>Polar form of a rectangular coordinate</h3>

The polar form of a rectangular coordinate (x, y) is expressed as (rcos theta, r sin theta)

Given the coordinate (-2√3 , 2)

r = √(-2√3)²+2²

r = √12+4

r = 4

theta = tan^-1(-2/2√3)

theta = tan^-1(-1/√3)

theta = -30 degrees = 210 degrees

The polar coordinates of the point whose cartesian coordinates is (-2√3 , 2) is (4cos210, 4sin210)

Learn more on polar coordinate here: brainly.com/question/14965899

#SPJ1

8 0

2 years ago

if one point is located at (-5,3) and another point is located at (7,-4). find the distance between the points. round to the nea

Novay_Z [31]

Answer:

13.9

Step-by-step explanation:

Use the distance formula:

$d = \sqrt{(x_2 - x_1)^2 + (y_2-y_1)^2}\\\\d = \sqrt{(7 - (-5))^2 + (-4-3)^2}\\d = \sqrt{(12)^2 + (-7)^2}\\d = \sqrt{144 + 49}\\d = \sqrt{193}\\$

The square root of 193 rounded to the nearest tenth is 13.9.

7 0

3 years ago

Nate's weekly pay increased from $710 to $770. Which of the following is closest to the

Maksim231197 [3]

Answer:

about 7.2 I think

Step-by-step explanation:

if his pay went up all the way to 770 it would be going up either 7.8 or 7.2

7 0

3 years ago

2.) What value for c will make the expression a perfect square trinomial?

andre [41]

Answer : $\frac{49}{4}$

Given expression is $x^2 - 7x + c$

To make perfect square trinominal we use completing the square method

In completing the square method we add and subtract the half of square of coefficient of middle term

Here coefficient of middle term is -7

Half of -7 is $\frac{-7}{2}$

Square of $\frac{-7}{2}$ is $(\frac{-7}{2})^2$ = $\frac{49}{4}$

So the expression becomes $x^2 - 7x + [tex] \frac{49}{4}$ that gives perfect square trinomial

Hence , the value of 'c' is $\frac{49}{4}$

6 0

3 years ago

Read 2 more answers

SO basically uhh I suck at math

postnew [5]

Ok so you plug them in. -5 squared is 25 minus 27

6 0

3 years ago

Read 2 more answers