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Alchen [17]
3 years ago
13

Find the value of 7v-6 given that -8v-9=7 Simplify your answer as much as possible 7v-6=

Mathematics
2 answers:
evablogger [386]3 years ago
4 0

Answer:

-20

Step-by-step explanation:

-8v-9=7

Add 9 to each side

-8v-9+9=7+9

-8v = 16

Divide by -8

-8v /-8 = 16/-8

v = -2

Now find

7v -6

7(-2) -6

-14 -6

-20

notka56 [123]3 years ago
3 0

Answer:

negative 20?

Step-by-step explanation:

I tried to remember what I learned about a year ago...

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I want to know the answers to the ones circled
LenaWriter [7]

Hello! I will do my best to help you understand and receive the answers.

Let's begin with our first question..

15.) Dao has 2 3/8 pounds of hamburger meat. He is making 1/4 pound burgers. How many burgers can he make?

 For this problem we will have to use division. Our equation (use a calculator if needed) is 2 3/8  divided by 1/4  which equals 3.

Your final answer should be : Dao can make 3 hamburgers total.

I would answer the next question, but I believe from this information above you can try and figure it out. If you are still stuck, message  me and i can help you from there.


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4 0
3 years ago
If
Leno4ka [110]

Answer:

\frac{s^2-25}{(s^2+25)^2}

Step-by-step explanation:

Let's use the definition of the Laplace transform and the identity given:\mathcal{L}[t \cos 5t]=(-1)F'(s) with F(s)=\mathcal{L}[\cos 5t].

Now, F(s)=\int_0 ^{+ \infty}e^{-st}\cos(5t) dt. Using integration by parts with u=e^(-st) and dv=cos(5t), we obtain that F(s)=\frac{1}{5}\sin(5t)e^{-st} |_{0}^{+\infty}+\frac{s}{5}\int_0 ^{+ \infty}e^{-st}\sin(5t) dt=\int_0 ^{+ \infty}e^{-st}\sin(5t) dt.

Using integration by parts again with u=e^(-st) and dv=sin(5t), we obtain that

F(s)=\frac{s}{5}(\frac{-1}{5}\cos(5t)e^{-st} |_{0}^{+\infty}-\frac{s}{5}\int_0 ^{+ \infty}e^{-st}\sin(5t) dt)=\frac{s}{5}(\frac{1}{5}-\frac{s}{5}\int_0^{+ \infty}e^{-st}\sin(5t) dt)=\frac{s}{5}-\frac{s^2}{25}F(s).

Solving for F(s) on the last equation, F(s)=\frac{s}{s^2+25}, then the Laplace transform we were searching is -F'(s)=\frac{s^2-25}{(s^2+25)^2}

3 0
3 years ago
Each day, enough paperis recycledin the united statesto fill 15 miles of train boxcars.how many miles of boxcars could be filled
topjm [15]
15 x 7 days = 105 then multiply 5 weeks. 5 x 105 = 525 miles
3 0
3 years ago
Greg has two number cubes, each numbered from 1 to 6. He rolls both cubes at the same time. What is the probability that the tot
Mrrafil [7]

Answer:

69 nice

Step-by-step explanation:

u take 4 and make it 69

6 0
3 years ago
-10p+9p=12 And i've tried everything and i can't find it
Vera_Pavlovna [14]
-10p+9p=12 \\ \\  -p = 12 \\ \\ p = -12 \\ \\

The final result is: p = -12.
7 0
3 years ago
Read 2 more answers
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