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
Rainbow [258]
2 years ago
6

Which values of x make this equation true?

Mathematics
1 answer:
Evgesh-ka [11]2 years ago
3 0

Answer:

{x}^{2}  + x = 12 \\  {x}^{2}  + x - 12 = 0 \\  {x }^{2}  + 4x - 3x - 12 = 0 \\ x(x + 4) - 3(x + 4) = 0 \\ (x + 4)(x - 3) = 0 \\ either \:  \:  \: or \:  \\ x =  - 4 \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: x = 3

the answer is -4 and 3

You might be interested in
In a survey of 100 Phoenix high school students, 43 were male students. 42 students were female and went to Phoenix Full time. I
Elanso [62]
30 male students do full time.
3 0
3 years ago
Select the five kinds of graphs
DanielleElmas [232]
Pie chart, bar graph, line graph, scatter plot, and circle graph
7 0
3 years ago
What is the y to y=7x+120​
Afina-wow [57]

Answer:

805

Step-by-step explanation:

x=y-120÷7

y÷7=y-720÷7

7y=y-4830

y=4830÷6

y=805

3 0
3 years ago
A stone is dropped into a lake, creating a circular ripple that travels outward at a speed of 50 cm/s. Find the rate at which th
Evgen [1.6K]

Answer:

1.) 15,708cm^2/s

2) 47,124cm^2/s

3.) 109,956cm^2/s

Step-by-step explanation:

Given the following:

50cm/s is the radius of the ripple per second , that is, radius(r) of ripple after t seconds = speed * time(t)

Speed = 50cm/s

r = 50t

.area of a circle(A) = πr^2

Rate of change of area with radius :

dA/dt = π2r . dr/dt

Speed of ripple created = 50cm/s; this is the rate at which the radius changes with time (dr/dt)

dr/dt = 50cm/s

Rate at which area is increasing with time:

dA/dt = π2r . dr/dt

dA/dt = π2(50t).50

dA/dt = 5000πt

After 1 second:

dA/dt = 5000π(1)

= 15,707.963cm^2/s

After 3 second:

dA/dt = 5000π(3)

= 47,123.889cm^2/s

After 7 second:

dA/dt = 5000π(7)

= 109,955.74cm^2/s

8 0
3 years ago
What does it mean for an equation to express y in terms of x?
Troyanec [42]
It means putting X at the front. So you'd express the equation as x = ay + b
5 0
3 years ago
Other questions:
  • The numbers Of students in the four sixth-grade classes at Northside School are 26,19,,34,and 21.Use the properties to find the
    12·1 answer
  • How has Katherine Johnson’s childhood affect her math career?
    8·1 answer
  • Ali drove 567 miles in 9 hours. At the same rate, how long would it take him to drive 441 miles?
    15·1 answer
  • Mrs. Escalante was riding a bicycle on a bike path. After riding 2/3 of a mile, she discovered that she still needed to travel 3
    8·1 answer
  • -4x+3x<4 what is the awenswer to this equation
    8·1 answer
  • Please help test due in 1 hour and it’s a grade! Will give good review and brainliest!
    12·1 answer
  • Answer This Please With explanation If You do I Will Mark Brainliest
    14·1 answer
  • In ΔXYZ, ∠X=82° and ∠Y=84°. ∠XWZ=90° and XY=97. Find the length of XW to the nearest integer.
    12·1 answer
  • Which one is a function quick
    10·1 answer
  • What is the area of this figure? ​
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!