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
torisob [31]
2 years ago
5

He sum of two numbers is negative twelve​, and one number is five​ less than the other. Using the variables mm​ and nn​ to repre

sent the two numbers, write a system of equations that describe the situation. Enter the equations below, separated by a comma.
Mathematics
1 answer:
arlik [135]2 years ago
6 0

Answer:

mm + nn = -12

mm - nn = 5

Step-by-step explanation:

two equations can be derived from the question

You might be interested in
Maribel is having a pizza party for her friends. Each pizza costs $12. Maribel only has $108 saved for the pizza party. C=12p is
pishuonlain [190]

Answer:

12 pizzas were ordered and Maribel only has 108 dollars.

12x12=144, 144-108=36, meaning that Maribel needs 36 more dollars for the whole number of pizzas. She could only get 9 pizzas instead of 12 because 12x9=108.

Step-by-step explanation:

8 0
3 years ago
Solve the equation for x∈Z <br><br>-x² +8x -14 ≥ 0
kenny6666 [7]
ax^2+bx+c=0\\\Delta=b^2-4ac\\if\ \Delta < 0\ then\ no\ solutions\\if\ \Delta=0\ then\ one\ solution:x=\frac{-b}{2a}\\if\ \Delta > 0\ then\ two\ solutions:x=\frac{-b\pm\sqrt\Delta}{2a}\\================================\\\\-x^2+8x-14\geq0\ \ \ \ |multiply\ both\ sides\ by\ (-1)\ \{change\ \geq\ on\ \leq\}\\\\x^2-8x+14\leq0\\\\a=1;\ b=-8;\ c=14\\\\\Delta=(-8)^2-4\cdot1\cdot14=64-56=8 > 0\\\sqrt\Delta=\sqrt8=\sqrt{4\cdot2}=\sqrt4\cdot\sqrt2=2\sqrt2

x_1=\frac{-(-8)-2\sqrt2}{2\cdot1}=\frac{8-2\sqrt2}{2}=\frac{8}{2}-\frac{2\sqrt2}{2}=\boxed{4-\sqrt2}\\\\x_2=\frac{-(-8)+2\sqrt2}{2\cdot1}=\frac{8+2\sqrt2}{2}=\frac{8}{2}+\frac{2\sqrt2}{2}=\boxed{4+\sqrt2}\\\\============================

ax^2+bx+c=0\\\\if\ a > 0\ then\ the\ parabola\ o pen\ up\\if\ a < 0\ then\ the\ parabola\ o pen\ down\\========================\\\\a=1 > 0-therefore\ o pen\ up\ (look\ at\ the\ picture)\\\\===============================\\\\Answer:x\in\left


Solutions\ in\ \mathbb{Z}:\\\\\sqrt2\approx1.4\\\\threfore:4-\sqrt2\approx4-1.4=2.6\ and\ 4+\sqrt2\approx4+1.4=5.4\\\\look\ at\ the\ second\ picture:x=3\ or\ x=4\ or\ x=5\ (x\in\{3;\ 4;\ 5\})

6 0
3 years ago
Read 2 more answers
Math help rightnow plzzzzzzzzzzzzzzzzzzzzzz 1 attachment answer all
raketka [301]

#1

x-7>10

x>10 + 7 

x>17

#2

3x <= 21

x <= 21/3

x<= 7

#3

5a - 2<18

5a < 18 + 2

5a <20

a <20/5

a<4

#4

2t + 8 >= -4(t +1)

2t +8>= -4t -4

2t + 4t >= -4 - 8

6t >= -12

t>= -12/6

t>= -2

6 0
3 years ago
Help me for 1-4???????
Stolb23 [73]
1.A 2.B 3.B 4.D    !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!11                                
7 0
3 years ago
Read 2 more answers
A flower bed has the shape of a rectangle 5 yards long and 4 yards wide. What is its area in square feet?
aalyn [17]
To find the area, use A= bh (base x height), or A = lw (length x width)

There are 3 feet in 1 yard

3 x 5 = 15
4 x 3 = 12

15 x 12 = 180

The flower bed is 180 ft² 

hope this helps
3 0
3 years ago
Other questions:
  • Help me with number 2 please !
    9·2 answers
  • Algebra 2B lesson 8
    13·1 answer
  • Identify the two numbers less than 20 with the most factors
    9·1 answer
  • Which best describes the relationship between the successive terms in the sequence below? –3.2, 4.8, –7.2, 10.8, …
    14·2 answers
  • I need help due tomorrow
    15·1 answer
  • Sally has a steady babysitting job on Saturday nights. She charges $9.50 an hour plus 3.50 for each child she watches. How many
    10·1 answer
  • PLEASE HELP! Create a table of points from the equation f(x)=3x^2-8x+2. (I'll add a picture of the tables)
    9·1 answer
  • PLEASE HELP!! (QUESTION 1)
    10·1 answer
  • Which street is parallel to 2nd St?<br> A. 1st St. <br> B. 3rd St. <br> C. 4th St.
    7·2 answers
  • What is the surface area of a square pyramid that has a base of 12 cm. and the sides of the pyramid have a slant height of 9 cm.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!