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
Helga [31]
3 years ago
8

What is the answer to 3 x - {-4 x} +12?

Mathematics
2 answers:
kumpel [21]3 years ago
8 0

Answer:

7x+12

Step-by-step explanation:

since its neg, it take out { and } it no use.

if its like that, you add it.

so the equation: 3x+4x

that is 7x

+12 is after

so you do 7x+12

you can't simp it. So that is the answer

100% SURE

viktelen [127]3 years ago
3 0
Answer: x=-7/12

3x+4x=7x
7x+12
7x=-12
x=-7/12
You might be interested in
2mn + 4n 2 and 5m 2 - 7mn
Katyanochek1 [597]
Answer: 5mn + 5m + 4n + 4

because

2mn - 7mn = 5mn

5m = 5m
stays the same

4n = 4n
stays the same

2 + 2 = 4

if you put them toghether than you get:

5mn + 5m + 4n + 4

is equal to

2mn + 4n + 2 and 5m + 2 -7mn
4 0
3 years ago
Experience raising New Jersey Red chickens revealed the mean weight of the chickens at
Nikolay [14]

Answer:

p-value = 0.1277

Step-by-step explanation:

p-value is the probability value tell us how likely it is to get a result like this if the Null Hypothesis is true.

Firstly we find the mean and standard deviation of the given data set.

⇒ Mean = \frac{4.41 +4.37+ 4.33+ 4.35 +4.30 +4.39 +4.36+ 4.38+ 4.40+ 4.39}{10}

⇒ Mean = 4.368

Standard deviation(\sigma) = \sqrt{\frac{1}{n}\sum_{i=1}^{n}{(x_{i}-\bar{x})^{2}} }

where, \bar{x} is mean of the distribution.

⇒ Standard Deviation = 0.034

Applying t- test:

Let out hypothesis is:

H₀: μ = 4.35

H₁: μ ≠ 4.35

Now,

Here, μ = Population Mean = 4.35

\bar{x}= Sample Mean = 4.368

σ = Standard Deviation = 0.034

n = 10

t=\frac{\bar{x}-\mu}{\frac{\sigma}{\sqrt{n}} }

Putting all values we get, t = 1.6777 with (10 -1) = 9 degree of freedom.

Then the p-value at 99% level of significance.

⇒ p-value = 0.1277

6 0
3 years ago
What time is 5 3/4 hours after 9:22pm
ExtremeBDS [4]
I think 4:45?...
......
8 0
3 years ago
The temperature at a point (x, y) is T(x, y), measured in degrees Celsius. A bug crawls so that its position after t seconds is
aniked [119]

Answer:

10.50°C

Step-by-step explanation:

Given x = 2 + t , y = 1 + 1/2t where x and y are measured in centimeters. Also, the temperature function satisfies Tx(2, 2) = 9 and Ty(2, 2) = 3

The rate of change in temperature of the bug path can be expressed using the composite formula:

dT/dt = Tx(dx/dt) + Ty(dy/dt)

If x = 2+t; dx/dt = 1

If y = 1+12t; dy/dt = 1/2

Substituting the parameters gotten into dT/dt we will have;

dT/dt = 9(1)+3(1/2)

dT/dt = 9+1.5

dT/dt = 10.50°C/s

Hence the rate at which the temperature is rising along the bug's path is 10.50°C/s

7 0
3 years ago
Help me pretty pls :)
Zarrin [17]
APC your welcome mark me brainliest please
8 0
3 years ago
Other questions:
  • What are the length and width of a rectangle if the length exceeds the width by 75 inches and the perimeter is 158 inches
    15·1 answer
  • Plz help me with these three
    14·1 answer
  • Interest earned : $837 principal : $3100 Interest rate : ? time : 6 years
    8·1 answer
  • Least common multiples of 8 and 12
    5·2 answers
  • Urgent
    14·2 answers
  • &gt; 2 2x &lt; x +5<br>2 s 2x &lt; x + 5 inequality​
    11·1 answer
  • PLS HELP
    10·1 answer
  • 3<br> x. 3x²+x-3=0<br> Find the zeros
    14·1 answer
  • Mitosis and meiosis escape room level 5 <br><br>please help​
    9·1 answer
  • Simplify the expression –3(x 3)2 – 3 3x. what is the simplified expression in standard form?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!