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Karolina [17]
1 year ago
7

Please please help me 30 points if you can I need the answer I know how to do it I just suck with the fractions

Mathematics
2 answers:
Marysya12 [62]1 year ago
7 0

Answer:

1

Step-by-step explanation:

\text{Given that,}~ (x_1,y_1) = (-2,4)~ \text{and}~ \text{slope,}~ m  = -\dfrac 32\\ \\\text{Equation of line,}~\\\\~~~~~~~y -y_1 = m(x-x_1)\\\\\implies y  -4 =-\dfrac 32(x+2)\\\\\implies y-4 =-\dfrac 32x - 3\\\\\implies y = -\dfrac 32x -3 +4\\\\\implies y = -\dfrac 32x +1

Ivan1 year ago
5 0

<u>The current equation of the perpendicular line</u>;

 ⇒ is the slope-intercept form: y= mx + b

  • m: is the coefficient in front of the x, which is also the slope's value
  • b: y-intercept of the function

<u>Now for the point-slope form, we need a point on the line and the slope of the line</u>:

⇒ we have

  • slope = -3/2
  • point: (-2,4)

<u>Since this is the point-slope form:</u> (y-y_1)=m(x-x_1)

 ⇒ where the (x₁,y₁) is the point on the line and m is the slope

    = > Equation: (y-4)=-\frac{3}{2}(x+2)

<u>To convert the equation to slope-intercept form</u>:

  ⇒ must isolate 'y' to one side and everything to the other side

      y= -\frac{3}{2}(x+2)+4\\ y=-\frac{3}{2} x-3+4\\y=-\frac{3}{2}x+1

<u>Answer:</u> y = -\frac{3}{2}x+1

Hope that helps!

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What is 5/8 divided by 1/4
Llana [10]

Answer:

Exact form: 5/2

Decimal form: 2.5

Mixed number form: 2 and 1/2

Step-by-step explanation:

when you divide a fraction you keep, change, flip

Equation: 5/8 ÷ 1/4

keep 5/8 the same

change the divide symbol into a multipulcation symbol

flip 1/4 the other way, so it's 4/1 (it's a whole number now)

then just multiply across

Equation now: 5/8 × 4/1

6 0
3 years ago
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Irina-Kira [14]

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5 0
3 years ago
In the same circle or in congruent circles:
Natali5045456 [20]

Answer:

congruent minor

Step-by-step explanation:

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8 0
2 years ago
A marketing firm is considering making up to three new hires. Given its specific needs, the management feels that there is a 50%
IRISSAK [1]

Answer:

a) 0.9

b) Mean = 1.58

Standard Deviation = 0.89

Step-by-step explanation:

We are given the following in the question:

A marketing firm is considering making up to three new hires.

Let X be the variable describing the number of hiring in the company.

Thus, x can take values 0,1 ,2 and 3.

P(x\geq 2) = 50\%= 0.5\\P(x = 0) = 10\% = 0.1\\P(x = 3) = 18\% = 0.18

a) P(firm will make at least one hire)

P(x\geq 2) = P(x=2) + P(x=3)\\0.5 = P(x=2) + 0.18\\ P(x=2) = 0.32

Also,

P(x= 0) +P(x= 1) + P(x= 2) + P(x= 3) = 1\\ 0.1 + P(x= 1) + 0.32 + 0.18 = 1\\ P(x= 1) = 1- (0.1+0.32+0.18) = 0.4

\text{P(firm will make at least one hire)}\\= P(x\geq 1)\\=P(x=1) + P(x=2) + P(x=3)\\ = 0.4 + 0.32 + 0.18 = 0.9

b) expected value and the standard deviation of the number of hires.

E(X) = \displaystyle\sum x_iP(x_i)\\=0(0.1) + 1(0.4) + 2(0.32)+3(0.18) = 1.58

E(x^2) = \displaystyle\sum x_i^2P(x_i)\\=0(0.1) + 1(0.4) + 4(0.32) +9(0.18) = 3.3\\V(x) = E(x^2)-[E(x)]^2 = 3.3-(1.58)^2 = 0.80\\\text{Standard Deviation} = \sqrt{V(x)} = \sqrt{0.8036} = 0.89

7 0
3 years ago
String a is 35 centimeters long.string b is 5 times as long as string a .both are necessary to create a decorative bottle .find
yulyashka [42]
First you convert centimeters to meters which will be 35 centimeters-> 0.35 meters

Once you have that, you multiply String A's length (0.35 m) by 5 to find String B's length which will be 1.75 meters.

Now that you have the two lengths you multiply each by 17.
 
17 x 1.75 = 29.75 and 17 x 0.35 = 5.95

Now you just add 29.75 and 5.95 and you get your answer which is
 
35.7 meters 
4 0
3 years ago
Read 2 more answers
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