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
Dmitry [639]
3 years ago
12

P varies inversely with x. If P = 7 when x = 8, find the value of P when x = 7.

Mathematics
1 answer:
inna [77]3 years ago
3 0

Answer:

P = 8

Step-by-step explanation:

Given that P varies inversely with x then the equation relating them is

P = \frac{k}{x} ← k is the constant of variation

To find k use the condition P = 7 when x = 8 , then

7 = \frac{k}{8} ( multiply both sides by 8 )

56 = k

P = \frac{56}{x} ← equation of variation

When x = 7 , then

P = \frac{56}{7} = 8

You might be interested in
50 POINTS!
photoshop1234 [79]

Answer:

9.4

Step-by-step explanation:

interpret and match The approximate

4 0
2 years ago
Solve the equation for t. (t-7)^2+18=9
Anika [276]

Answer:

t = 7 + 3i

Step-by-step explanation:

(t-7)^2 + 18 = 9

(t-7)^2 = 9 - 18

(t-7)^2 = -9

(t-7) = sqrt(-9) = |3| sqrt(-1)

t = 7 + 3i

4 0
3 years ago
The cafeteria wants to buy 4,500 new forks. If each package contains 90 forks, how many packages should the cafeteria buy?
nikdorinn [45]

Answer:

50

Step-by-step explanation:

4,500÷90=50

and to check

90×50=4500

4 0
3 years ago
Which of the following is not a case of direct variation?a Number of sheets of some kind and increased when their total weight i
VladimirAG [237]

Answer:

Step-by-step explanation:

If two variables, x and y have a direct variation, it means that an increase in x would lead to a corresponding increase in y. A decrease on x would lead to a corresponding decrease in y.

Therefore, we would compare the scenarios to determine which is not a direct variation. The correct option is

d) Time taken will be less if number of workers are increased to complete the same work.​

The rest are direct variation scenarios

3 0
3 years ago
What is the measure of angle XYZ?
Ierofanga [76]

Answer:

63degrees

Step-by-step explanation:

Using the theorem which states that the measure of angle at the vertex is half the angle of its intercepted arc.

Given

angle of its intercepted arc = 126 degree

Required

angle at the vertex = x =<XYZ

According to the theorem;

x = 1/2(126)

x = 126/2

x = 63

Hence the measure of <XYZ is 63degrees

6 0
3 years ago
Other questions:
  • Find sin(2x), cos(2x), and tan(2x) from the given information.<br> sin(x) = - x in Quadrant III
    15·1 answer
  • Four more than a number is no more than thirteen
    8·2 answers
  • For i≥1 , let Xi∼G1/2 be distributed Geometrically with parameter 1/2 . Define Yn=1n−−√∑i=1n(Xi−2) Approximate P(−1≤Yn≤2) with l
    10·1 answer
  • What is 23/41 as a percentage?<br> Give your answer rounded to one decimal place.
    8·1 answer
  • Can you please help me out
    6·1 answer
  • Mr. Reagans is taking advantage of the outdoor space at his new apartment. He plans to create a garden and build a fence around
    10·2 answers
  • If she spends her entire budget, Ya Binta can afford 74 peaches and 9 pineapples. She can also just afford 14 peaches and 21 pin
    10·1 answer
  • (MARKING) How many solutions does this equasion have? -4 - 10n = 8h + 10
    12·2 answers
  • Pythagoream Theorem Escape Room
    7·1 answer
  • The function f(x) = x3 – 8x2 + x + 42 has zeros located at 7, –2, 3. Verify the zeros of f(x) and explain how you verified them.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!