1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ArbitrLikvidat [17]
2 years ago
12

4/5 x (v−7) = 2 what is the value of v

Mathematics
1 answer:
Juliette [100K]2 years ago
3 0

Answer:

4/5x(v-7)=2

multiply both sides by 5/4, the reciprocal of 4/5

v-7=2x(5/4)

Express 2x(5/4) as a single fraction

v-7=<u>2</u><u>x</u><u>5</u>

4

Multiply 2 and 5

v-7=<u>1</u><u>0</u>

4

Reduce the fraction 10/4 to the lowest by extracting and cancelling 2

v-7=<u>5</u>

2

Add 7 to both sides

v=<u>5</u>+7

2

Covert fraction to 14/2

v=5/2+14/2

Since 5/2 and 14/2 have the same denominator, add them by adding their numerators

v=<u>5</u><u>+</u><u>1</u><u>4</u>

2

Add 5 and 14 together

v=<u>1</u><u>9</u>

2

You might be interested in
The hawk population in a county is declining at a rate of 1.4% per year. the population was 3800 in the year 2016. which answer
Anika [276]

After a year the population will be 98.6% (100% - 1.4%) 98.6% as a decimal is 0.986 ... so after 1 year it will be: <span>

3800 x 0.986 

after 2 years it will be: 

3800 x 0.986 x 0.986... 

after 3 years: 3800 x (0.986)^3 

<span>in 2018. And after 4 years it will be 3800 x (0.986)^4 = which is 3591.62724 or 3592</span></span>

6 0
2 years ago
Can someone help me with this thanks ​
Ugo [173]

The length of the brace required is 4.3m

What is sine rule?

In a ΔABC a, b and c are the sides and A, B and C are angles then,

\frac{a}{SinA}=\frac{b}{sinB}=\frac{c}{sinC}

We can find the length, l as shown below:

Let AB=3m, BC=2m and AC=l

Let ∠A=25°

So, in ΔABC

\frac{BC}{sinA}=\frac{AB}{sinC}=\frac{AC}{SinB}

\frac{BC}{sinA}=\frac{AB}{sinC}

\frac{2}{sin25}=\frac{3}{sinC}

\angle{C}=sin^{-1}(\frac{3\times sin25}{2} )

∠C=39.34°

∠A+∠B+∠C=180°

∠B=180°-25°-39.34°

∠B=115.66°

\frac{BC}{sinA}=\frac{AC}{SinB}

\frac{2}{sin25}=\frac{l}{sin(115.66)}

l=\frac{2\times sin(115.66)}{sin25}

l=4.2659

Rounding to nearest tenth of meter.

l=4.3m

Hence, the length of the brace required is 4.3m

Learn more about Sine Rule here:

brainly.com/question/25852087

#SPJ1

8 0
1 year ago
R is inversely proportional to A.
hjlf

Here are the answer: a) R = 3.6 and b) A = 2

Step-by-step explanation:

Given,

R is inversely proportional to A.

R ∝ \frac{1}{A}

so, R = \frac{k}{A}  -------eq 1 where k is any constant

To find the values of a) R when A = 5 and

b) Value of A when R = 9

Now,

Putting R = 12 and A = 1.5 in eq 1 we get,

12 = \frac{k}{1.5}

or, k = 12×1.5 = 18

From eq 1 we get,

R = \frac{18}{A} --------- eq 2

Now,

a) Putting A= 5 in eq 2 we get,

R = \frac{18}{5} = 3.6

b)  Putting R = 9 in eq 2 we get

R = \frac{18}{A}

or, A = \frac{18}{9} = 2

5 0
3 years ago
Read 2 more answers
Your total bill for Cracker Barrel was $37 and you want to pay a 15% tip. How much
Lena [83]

Answer:42.55$

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
What is x/-3+20=30? Can someone pls help me
VARVARA [1.3K]

Answer:

x=510

Step-by-step explanation:

You can first combine like terms to get x/17=30

The inverse operation of division is multiplication so you can multiply by 17 on both sides to get your final answer: x=510

5 0
2 years ago
Other questions:
  • A girl asks her father how many ties he has and he answers with a riddle: "seven-eighths of my ties plus four."
    13·2 answers
  • Jody has already hiked 4 kilometers. The trail is 12 kilometers long. She can hike 2.5 per hour. Which function will help Jody f
    8·2 answers
  • What is the probability that 4 randomly selected adult americans have visisted a casino in past 12 months?
    6·1 answer
  • A number z times 2 minus 6is the same as m divided by 3
    8·2 answers
  • A person wishes to mix coffee worth $6 per pound with coffee worth $3 per pound to get a 120 pound of a mixture worth $4 per pou
    8·1 answer
  • 5.Solve:
    7·1 answer
  • The current population of Fun City is 21000 people. If the population of the city will double every 51 years then the population
    11·1 answer
  • Choose as many answers as apply.
    7·2 answers
  • I REALLY NEED HELP
    10·2 answers
  • Rhonda has an extra credit protect to make a rectangular prism whit the volume of at least 24 in*3 . if the area of her base is
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!