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3 years ago

How do u solve the equation -17=n-5+3n

2 answers:

8 0

To solve an equation, we should isolate the variable by doing the reverse operations and simplify. It is sometimes easier to simplify at the beginning, and then again at the end.

-17=n-5+3n
-17=-5+4n
+5 +5
-12=4n
/4 /4
-3=n

Using the math above, we can see that n=-3.

Triss [41]3 years ago

3 0

-12=4n
/4 /4
n=-3 the answer is -3=n
i hope it's will be help u

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The circumference of a circle is 47.1 and the diameter of the circle is 15. Which best represents

kvv77 [185]

Answer: $\pi =\frac{47.1}{15}$

Step-by-step explanation:

The complete exercise is: "The circumference of a circle is 47.1 and the diameter of the circle is 15. Which best represents the value of π? "

In order to solve this exercise, it is important to remember that the circle can be calculated with the following formulas:

1. $C=\pi D$

Where "C" is the circumference of the circle and "D" is the diameter of the circle.

2. $C=2\pi r$

Where "C" is the circumference of the circle and "r" is the radius of the circle (Remeber that the diameter is twice the radius).

In this case, the exercise gives you the circumference of the circle and its diameter. These are:

$C=47.1\\\\d=15$

Then, knowing those values, you can substitute them s into the first equation $C=\pi D$ , as following:

$47.1=\pi (15)$

The final step is to solve for $\pi$ :

$\pi =\frac{47.1}{15}$

8 0

3 years ago

Solve the inequality. 2(4+2x)25x+5

stealth61 [152]

Answer:

Step-x ≤ 3

Given

2(4 + 2x) ≥ 5x + 5 ← distribute parenthesis on left side

8 + 4x ≥ 5x + 5 ( subtract 4x from both sides )

8 ≥ x + 5 ( subtract 5 from both sides )

3 ≥ x , hence

x ≤ 3by-step explanation:

3 0

3 years ago

Help fast please ! Match the graph go one of the exponential functions

lara [203]

Answer:

$f(x)=(\frac{1}{4} )^{x} +4$

Step-by-step explanation:

The way I did this was I noticed that the graph had a y-intercept of 4 and the only exponential function that had a y-intercept of 4 was $f(x)=(\frac{1}{4} )^{x} +4$

3 0

3 years ago

Which quotient matches the description of solving with partial quotients for 240÷15

Illusion [34]

Answer:

C. 16

Step-by-step explanation:

240/15

Step one: 10x15= 150

240-150= 90

Partial quotient: 10

Step two: 6x15= 90

90-90= 0

Partial quotient: 6

Step 3: 10+6= 16

Answer check: 240/15= 16

3 0

3 years ago

Assume that when adults with smartphones are randomly selected, 57% use them in meetings or classes. If 8 adult smartphone use

vovikov84 [41]

Answer:

≈ 0.2526

Step-by-step explanation:

The number of combinations of 4 out of 8:

8C4 = 8!/(4!(8-4)!)= 8*7*6*5/(1*2*3*4)= 70

Success factor is:

57% = 0.57

and failure factor is:

(100 - 57)%= 43%= 0.43

Probability:

0.57⁴*0.43⁴*70 ≈ 0.2526

6 0

3 years ago