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
enot [183]
3 years ago
11

I need some help please

Mathematics
2 answers:
AleksandrR [38]3 years ago
7 0

Answer:

a)-10 b)7

Step-by-step explanation:

a)2 ( x + 3 ) = x - 4

2x+6=x-4

2x+6-x=-4

x+6=-4

x=-4-6

x=-10

b)4 ( 5 x - 2 ) = 2 ( 9 x + 3 )

20x-8=2(9x+3)

20x-8=18x+6

20x-8-18x=6

2x-8=6

2x=6+8

2x=14

x=14/2

x=7

gizmo_the_mogwai [7]3 years ago
3 0

Answer:

a) -10

b) 7

Step-by-step explanation:

a) 2(x + 3) = x - 4

=  > 2x + 6 = x - 4

=  > 2x - x =  - 4 - 6

=  > x =  - 10

b) 4(5x - 2) = 2(9x + 3)

=  > 20x -8 = 18x + 6

=  > 20x - 18x = 8 + 6

=  > 2x = 14

=  > x =  \frac{14}{2}  = 7

You might be interested in
Mrs. Cho has 24 students in her class. Some of her students are also in the play. Explain why it is not possible for exactly 24%
lora16 [44]
Let's start by calculating how many students does 24% represent.
24% * 24 = 0.24 * 24 = 5.76
We got a decimal number as solution. The reason why exactly 24% students can't be in the play is because this percentage does not represent whole number of students. She can't take 0.76 students

If she wanted 25% students to be in a play it would mean she has to take:
25% * 24 = 0.25 *24 = 6 students
3 0
3 years ago
Can I get some help with this plz?
valina [46]

Answer:

I think on the y-axis you should count by 4s so its more spaced out and label the x axis (which is the line going horizontaly) 1-6 spaced out and you got numbers 1-3 correct I think your name is good you could also put number of bacteria vs number of days :)

Hope this helps

8 0
3 years ago
NEED HELP PLEASE ASAP THIS A FUNCTION HELP!!!
andrey2020 [161]
You have to deal with this type of question step by step. Firstly, you can figure out all the unknown values (such as sqrt x-3), by substituting x for 19, as you are trying to figure out f(x) when x=19. Therefore:
x+2=21
sqrt(x-3)=sqrt(19-3)=sqrt 16=4
Now the equation is easier to handle:
3/21 - 4
We can write this as 3/21 - 4/1 , which equals -27/7.
4 0
3 years ago
Please help me on this im so overwhelmed right now
Allushta [10]
He hiked 15 miles on friday
3 0
3 years ago
Read 2 more answers
1. IF the function f(x) = 2(x – 3)2 – 4 is shifted vertically three units up and horizontally
hichkok12 [17]

Answer:

I believe it is 2(x-5)²−1

Step-by-step explanation:

The parentheses represent the horizontal shift. (X-__) is a shift to the right. (X+__) is a shift to the left. The last number of the function is the vertical shift. A negative number is shifting down and a post number is shifting up.

So, if the graph shifts up three units, then you add 3 + -4 to get -1. And if the graph shifts right 2 units, then you subtract 2 from -3 to get -5.

3 0
3 years ago
Other questions:
  • What is the probability of rolling 2 dice with sides 2,4,6, and 8? Then, what is the probability of getting a sum of 4,6,8,10,12
    10·1 answer
  • If your income of $1500 increased by 15%, find the amount it has increased by
    9·2 answers
  • Which of the following is closest to 27.8 × 9.6?. A. 280. B. 300. C. 2,800. D. 3,000
    6·1 answer
  • Identify an equation in slope Intercept form for the line parallel to y= -3x+7 that passes through (2,-4)
    8·1 answer
  • The length of a rectangle is 9 inches and it’s width 4 inches what is the perimeter of the rectangle
    7·1 answer
  • I need help with this question..
    9·1 answer
  • Help please what is this?
    12·1 answer
  • Write the equation for the red part of the piecewise function. Ex: f(x) = mx+b
    6·1 answer
  • If p varies directly as r and p= 3.2 when r=4, find the value of p when r= 6.5<br>​
    7·1 answer
  • Help QUICKKKKK please
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!