All categories

3 years ago

-3=1/2(4d-12) what is d? And what are the steps

Mathematics

1 answer:

Nookie1986 [14]3 years ago

5 0

Answer:

d equals to 3/2

Step-by-step explanation:

1. use distributive property :

-3= 1/2d - 6

2. get rid of six by adding it on both sides of the equation:

-3 =1/2d - 6

+6 + 6

________________

3=1/2d

3. multiply both sides by 1/2

3*1/2 = 1/2d *1/2

3/2=d

You might be interested in

If \triangle △RST is isosceles. find x then find m∠S.<br><br> x=<br> m∠S=

pickupchik [31]

Answer:

You know that you can look it up then you can see the answer right away

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Please help me!!! I will give brainliest to the person who explains their answer the best!!

Basile [38]

Answer:

I think elimination with subtraction would be the best answer choice, since all the numbers are positive.

5 0

3 years ago

Read 2 more answers

What is the slope of the line that passes through the points (-6, 8) and (-9, 7)? Write your answer in simplest form.

yanalaym [24]

Answer:

m=1/3

equation y=1/3x+10

Step-by-step explanation:

Find the rise and run.

1. -6--9=run=3

2. 8-7=rise=1

6 0

2 years ago

Read 2 more answers

Identify an equation in slope intercept form for the line parallel to Y equals 4X -9 that passes through (-5,3)

Kobotan [32]

Slope intercept form of a line is y=mx+b where m= slope and b=y-intercept.

Now compare this form with the tiven equation y=4x-9 to get the value of m.

So, m= 4.

Slope of all parallel lines are always equal. Which means the line which is parallel to this has also the same slope: m=4.

Now we need to find the value of b to get the equation. That parallel line passes through (-5,3).

The point intercept form of a line is,

(y-y1)=m(x-x1)

So, we can plug in the m=4, x1=-5 and y1=3 in the above equation. Hence,

y-3=4(x-(-5))

y-3=4(x+5) Since -(-5)=+5

y-3=4x+20 By distributing property.

y=4x+20+3 Adding 3 to each sides.

y=4x+23

So, the slope-intercept form of that parallel line is y=4x+23.

7 0

3 years ago

A professor has learned that three students in his class of 20 will cheat on the final exam. He decides to focus his attention o

balu736 [363]

Answer:

$P(X \ge 1) = 0.509$

$P(X \ge 1) = 0.6807$

Step-by-step explanation:

From the question we are told that

The number of students in the class is N = 20 (This is the population )

The number of student that will cheat is k = 3

The number of students that he is focused on is n = 4

Generally the probability distribution that defines this question is the Hyper geometrically distributed because four students are focused on without replacing them in the class (i.e in the generally population) and population contains exactly three student that will cheat.

Generally probability mass function is mathematically represented as

$P(X = x) = \frac{^{k}C_x * ^{N-k}C_{n-x}}{^{N}C_n}$

Here C stands for combination , hence we will be making use of the combination functionality in our calculators

Generally the that he finds at least one of the students cheating when he focus his attention on four randomly chosen students during the exam is mathematically represented as

$P(X \ge 1) = 1 - P(X \le 0)$

Here

$P(X \le 0) = \frac{ ^{3} C_0 * ^{20 - 3} C_{4- 0}}{ ^{20}C_4}$

$P(X \le 0) = \frac{ ^{3} C_0 * ^{17} C_{4}}{ ^{20}C_4}$

$P(X \le 0) = \frac{ 1 * 2380}{ 4845}$

$P(X \le 0) = 0.491$

Hence

$P(X \ge 1) = 1 - 0.491$

$P(X \ge 1) = 0.509$

Generally the that he finds at least one of the students cheating when he focus his attention on six randomly chosen students during the exam is mathematically represented as

$P(X \ge 1) = 1 - P(X \le 0)$

$P(X \ge 1) =1- [ \frac{^{k}C_x * ^{N-k}C_{n-x}}{^{N}C_n}]$