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erik [133]
3 years ago
13

Solve for n. –9n − 1 = –10n

Mathematics
2 answers:
mario62 [17]3 years ago
7 0

Answer:

n = -1

Step-by-step explanation:

-9n - 1 = -10n

<u>+9n        +9n</u>

-1 = n

givi [52]3 years ago
6 0

Answer:

n=1

Step-by-step explanation:

Let's solve your equation step-by-step.

−9n−1=−10n

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PLEASE HELP AND EXPLAINN!!!!!!!!1
kirill [66]

Answer:

2 - x

Step-by-step explanation:

Add together any numbers that need to be together

 5 - 2x - 3 + x

   2 - x

Let me know if you need more of an explanation

7 0
3 years ago
Read 2 more answers
Problem PageQuestion It takes an older pump twice as long to drain a certain pool as it does a newer pump. Working together, it
umka2103 [35]

Answer:

It will take 6 hours for the new pump to drain the pool.

Step-by-step explanation:

As the complete question is not given, the complete question is found online and is attached herewith

Let the rate of new pump is given as x=W/t_1

Let the rate of the old pump is given as y=W/t_2

it is given that the time t_2=2t_1

So by substituting the values of t_2 in the rate equation of y

y=W/2t_1

y=(W/t_1*2)=x/2

Also the total rate of both the pumps is given as W/t3 where t3 is given as 4 hours so the equation becomes

x+y=W/4

x+x/2=W/4

3x/2=W/4

As x=W/t_1

3W/2t_1=W/4

Now as W is same on both sides so

3/2t_1=1/4

12=2t_1

t_1=6 hours

So it will take 6 hours for the new pump to drain the pool.

7 0
3 years ago
Can anyone help me I don’t understand plz
Citrus2011 [14]

There we have an information of two functions g(t)\,  and \, h(t)

Using this two functions g(t)\,  and \, h(t), we need to find the composition of functions (h\circ g)(t).

The composition of two functions h and g is the new function , by performing g first and then performing h.

(h\circ g)(t)=h(g(t))

g(t)=3(t+1)

h(t)=2t

Composition of h and g (t) = (h\circ g)(t)

=h(g(t))

First plugin the value of g(t)=3(t+1)

h(g(t))=h(3(t+1))

=h(3t+3)

We know that h(t)=2t, we need to find h(3t+3),

That is, to replace t by 3t+3,

=2(3t+3)

Now distribute 2 into 3t+3,

=6t+6

Now plug in t=-6,

h(g(-6))=6(-6)+6

=-36+6 \\ =-30

Thus the solution is (D). h(g(-6))=-30.

5 0
3 years ago
Read 2 more answers
5. Jocelyn needs to study two stars for her astronomy research. She has narrowed her choices down to four stars that are located
user100 [1]
The four stars are located in star m
7 0
3 years ago
Miguel decided to buy a cell phone for $150. It is currently on sale for 10% off. When he got to the counter, he got an addition
aleksandrvk [35]

Answer:

The final cost price of the cellphone is  $121.5

Step-by-step explanation:

The marked price of the cell phone = $150

Now, sale percentage on the marked price = 10%

Now, 10 % of 150 = \frac{10}{100}  \times 150 = 15

⇒The sale discount on the marked price = $15

So, the  selling price of cellphone = Marked Price - Sale discount

                                                        = $150  - $15  = $135

Now, the second discount offered on $135 is 10%

10 % of 130 = \frac{10}{100}  \times 130 = 13.5

⇒The additional sale discount on the selling price = $13.5

So, the final cost of cellphone = Selling Price - Additional Sale discount

                                                        = $135  - $13.5  = $121.5

Hence, the final cost price of the cellphone is  $121.5

5 0
3 years ago
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