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Lerok [7]
3 years ago
10

-1/2 (−4n+6)+3n=47 solve n=?

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

Answer:

N:10

Step-by-step explanation:

mafiozo [28]3 years ago
5 0

Answer:

N = 10

Step-by-step explanation:

isolate  the  variable  by  dividing  each  side  by  factors  that  don't  contain  the  variable

PLZ GIVE BRAINLIEST

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Which angles are supplementary to each other ? Select all that apply
swat32

Answer:

6 and 4

Step-by-step explanation:

5 0
3 years ago
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in the life of a car engine, calculatedin miles, is normally distributed, with a mean of 17,000 miels and a standard deviation o
Alinara [238K]

Answer:

the guarantee period should be less than 136010 miles

Step-by-step explanation:

From the given information;

Let consider Y to be the life of a car engine

with a mean μ = 170000

and a standard deviation σ = 16500

The objective is to determine what should be the guarantee period T if the company wants less than 2% of the engines to fail.

i.e

P(Y < T ) < 0.02

For the variable of z ; we have:

z = \dfrac{x - \mu }{\sigma}

z = \dfrac{x - 170000 }{16500}

Now;

P(Y < T ) = P( Z < \dfrac{T- 170000}{16500})

P( Z < \dfrac{T- 170000}{16500})< 0.02

From Z table ;

At P(Z < -2.06) ≅ 0.0197  which is close to 0.02

\dfrac{T- 170000}{16500}

{T- 170000}

{T- 170000}< - 33990

{T}< - 33990+ 170000

{T}

Thus; the guarantee period should be less than 136010 miles

4 0
4 years ago
Similar right triangles plss helpp
jeka57 [31]

Answer:

your añswer is c) I hope it helps!

5 0
3 years ago
Read 2 more answers
Please answer fast
Darya [45]

Answer:

(5,-3)

Step-by-step explanation:

Solve by Graphing.

Graph the lines.

When we graphed them, the intercepted at point (5,-3).

The solution the the system of equations is (5,-3).

7 0
4 years ago
Sergi's grandmother sent him 10.00 for his birthday. He gave 1/10 of it in church, spent 1/5 of it on a toy , and spent 3/5 of i
LiRa [457]

Answer:

He has $1 left.

Step-by-step explanation:

In order to calculate the amount of money he have left we need to calculate how much each individual fraction represents from the original value, sum everything that he spent and subtract from the original value. So we have:

church = (1/10)*10 = 1

toy = (1/5)*10 = 2

shirt = (3/5)*10 = 6

total spent = church + toy + shirt = 1 + 2 + 6 = 9

amount left = 10 - total spent = 10 -9 = 1

He has $1 left.

6 0
3 years ago
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