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Anettt [7]
3 years ago
6

3[-x+(2x+1)]=x-1 ? What is X?

Mathematics
1 answer:
Nonamiya [84]3 years ago
7 0
<span>3[-x+(2x+1)]=x-1
</span><span>3[x+1]=x-1
3x + 3 = x -1
3x - x = -1 -3
2x = -4
x = -4/2
x = -2</span>
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HELPPPPPPPPPPPPPPPPPPPP and explain plz
tiny-mole [99]
This is a lot of information at once, so break down the question step by step! 

1) You are told that 34.6% of Mr. Camp's class of 26 students reported that they have at least 2 siblings. Find the number of students in his class that have at least two siblings by multiplying 0.346 (the decimal form of 34.6%) by 26:
0.346 x 26 = 9 students

However, be careful! Notice that you want the number of students with fewer than 2 siblings. That means you need to subtract 9 from 26 to find the number of students with less than 2 siblings:
26 - 9 = 17 students

2) You are told that there are 1800 eighth-grade classes in the state, and the average size of the classes is 26. That means you can assume that there are 1800 classes of 26 in the state.

Since you are told that Mr. Camp's class is representative of students in the state's 8th grade classes. That means in the state, for each class of 26, 17 students (the number we figured out in step 1) have fewer than two siblings!

For each of the 1800 classes of 26, 17 students have fewer than two siblings. That means you need to multiply 1800 classes by 17 students per class to get your final answer, which is answer C:
1800 x 17 = 30,600

------

Answer: C) 30,600
7 0
3 years ago
Read 2 more answers
62,591 + 7.1 X 10-2 in standard notations ​
quester [9]

Answer:

0.000071

Step-by-step explanation:

The given number that is given in scientific notation is, ............(1)

We need to write this number in standard notation. A number can be written in scientific notation as :

..........(2)

In standard notation,  

So,  is equivalent to . Hence, the correct option is (d)

7 0
3 years ago
Read 2 more answers
Examine the system of equations.
MakcuM [25]

Answer:

\boxed{\boxed{\sf x=-3}}

Step-by-step explanation:

\sf y = -3x - 2

\sf y=7

We'll substitute y into the equation:

\sf 7 = -3x - 2

Switch sides:

\sf -3x-2=7

Add 2 to both sides

\sf -3x-2+2=7+2

\sf -3x=9

Divide both sides by -3:

\sf \cfrac{-3x}{-3}=\cfrac{9}{-3}

\sf x=-3

Therefore, the value of x/solution is -3

________________________________________

8 0
3 years ago
Read 2 more answers
A line passes through the point (-8, -3) and has a slope of -3/2
rjkz [21]

Answer:

this is the answer

Step-by-step explanation:

hope it helped!!!

4 0
3 years ago
Is the relationship shown by the data linear? How can you tell if it is or is not? If so, model the data with an equation.
Marat540 [252]

Answer:

linear and y = 2x + 19

Step-by-step explanation:

the x- values increment by 2 and the values of y increment by 4

This indicates a linear relationship exists in the form

y = mx + c ( m is the slope and c the y-intercept )

m = \frac{rise}{run} = \frac{4}{2} = 2

y = 2x + c ← is the partial equation

to find c use any ordered pair from the table

using (- 5, 9 ), then

9 = - 10 + c ⇒ c = 9 + 10 = 19

y = 2x + 19 ← linear equation

As a check

x = - 7 : y = - 14 + 19 = 5 ← correct value of y

x = - 5 : y = - 10 + 19 = 9 ← correct value of y

x = - 3 : y = - 6 + 19 = 13 ← correct value of y

x = - 1 : y = - 2 + 19 = 17 ← correct value of y


4 0
3 years ago
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