1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Vladimir79 [104]
2 years ago
12

7+n=−5 18=−3y−6 3/5x=18

Mathematics
2 answers:
Keith_Richards [23]2 years ago
8 0

Answer:

1) n=-12

2) y=-8

3) x= 1/30

Step-by-step explanation:

1) 7+n=-5

7+n-7=-5-7

n=-12

2) 18=-3y-6

  -3y-6=18

 -3y-6+6=18+6

 -3y=24

 -3y/-3 = 24/-3

      y= -8

3) 3/5x=18

   3/15 X 5x= 18 X 5x

        3=90x

    90x/90= 3/90

        x= 1/30

nataly862011 [7]2 years ago
5 0
Yeahh He is right lol ^^
You might be interested in
The magnitude and direction of two vectors are shown in the diagram. What is the magnitude of their sum? ​
VLD [36.1K]

Separate the vectors into their <em>x</em>- and <em>y</em>-components. Let <em>u</em> be the vector on the right and <em>v</em> the vector on the left, so that

<em>u</em> = 4 cos(45°) <em>x</em> + 4 sin(45°) <em>y</em>

<em>v</em> = 2 cos(135°) <em>x</em> + 2 sin(135°) <em>y</em>

where <em>x</em> and <em>y</em> denote the unit vectors in the <em>x</em> and <em>y</em> directions.

Then the sum is

<em>u</em> + <em>v</em> = (4 cos(45°) + 2 cos(135°)) <em>x</em> + (4 sin(45°) + 2 sin(135°)) <em>y</em>

and its magnitude is

||<em>u</em> + <em>v</em>|| = √((4 cos(45°) + 2 cos(135°))² + (4 sin(45°) + 2 sin(135°))²)

… = √(16 cos²(45°) + 16 cos(45°) cos(135°) + 4 cos²(135°) + 16 sin²(45°) + 16 sin(45°) sin(135°) + 4 sin²(135°))

… = √(16 (cos²(45°) + sin²(45°)) + 16 (cos(45°) cos(135°) + sin(45°) sin(135°)) + 4 (cos²(135°) + sin²(135°)))

… = √(16 + 16 cos(135° - 45°) + 4)

… = √(20 + 16 cos(90°))

… = √20 = 2√5

5 0
3 years ago
Read 2 more answers
John was told that his IQ score was 3 standard deviations above the mean. If IQ scores were approximately normal with μ=93 and σ
Darina [25.2K]

9 is the standard deviation in this problem. The mean iq score is 93.

This meant that his IQ score is 93+9*3=93+27=120 :) also this john person is really smart im jealous :(

4 0
2 years ago
What is the recursive formula, if the sequence is 4, 7, 10, 13, ...?
tensa zangetsu [6.8K]

Answer:

Step-by-step explanation:

In the arithmetic sequence \(t_1\), \(t_2\), \(t_3\), ..., \(t_n\), \(t_1=23\) and \(t_n= t_{n-1} - 3\) for each n > 1. What is the value of n when \(t_n = -4\)?

A. -1

B. 7

C. 10

D. 14

E. 20

Hide Answer

Official Answer and Stats are available only to registered users.  

Register

/

Login

.

_________________

Best Regards,

E.

MGMAT 1 --> 530

MGMAT 2--> 640

MGMAT 3 ---> 610

GMAT ==> 730

4 0
2 years ago
Read 2 more answers
Water was leaking from a pipe at a constant rate, filling a 2-cup container every hour. How man gallons of water leaked from the
Harrizon [31]
The answer is C. 3 gallons of water
7 0
2 years ago
Read 2 more answers
A sphere with a radius of 4 cm is enlarged by a scale factor of 2. What is the approximate volume of the new sphere in cubic cen
Lisa [10]

\textit{volume of a sphere}\\\\ V=\cfrac{4\pi r^3}{3}~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ \stackrel{original}{r=4}\\ \stackrel{enlarged}{r=(4)(2)} \end{cases}\implies \begin{array}{llll} V=\cfrac{4\pi (\stackrel{enlarged}{~~(4)(2)~~})^3}{3} \\\\\\ V=\cfrac{2048\pi }{3}\implies V\approx 2144.66~cm^3 \end{array}

5 0
1 year ago
Other questions:
  • PLEASE COMMENT THE CORRECT ANSWER I WILL REWARD BRAINLY
    7·1 answer
  • In a graduating class with the same number of boys and girls, 1/8 of the girls and 5/6 of the boys are honor students. What part
    8·1 answer
  • Can you please walk me through how to simplify this? <br><br> 3x^2 – 5x^2 +4x^2
    13·2 answers
  • You want to put $2,500 in a simple interest account.It has a 4% annual interest rate.How long will it take you to earn $200 in i
    7·1 answer
  • What is equivalent to expression 2(7x + 3 - x) ?<br> PLEASE DO STEP BY STEP
    12·2 answers
  • I will give brainliest
    8·1 answer
  • A single ice skating pass costs $2.75. A monthly pass costs $24.00. Peter estimates he will go skating 8 times this month and Ju
    8·1 answer
  • The diagonal of a rectangle is 25 in. The width is 15 in. What is the area of the rectangle?
    8·1 answer
  • Find the value of x and show work
    13·1 answer
  • PLEASE ASAP!! ALSO PLEASE INCLUDE AN EXPLANATION OF HOW YOU GOT THE ANSWER!!! THANK YOU! BTW THERE ARE TWO PICTURES! :)
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!