3 years ago

Help what’s the rule

Mathematics

1 answer:

solong [7]3 years ago

5 0

Doubling or quadruple

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1/4 times X -1+ 3X equals 2

iris [78.8K]

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Step-by-step explanation:

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2 years ago

The price of one share of stock in BadInvestment.com plunged 14 points in 4 weeks. Find the average change in the stock price pe

kiruha [24]

4 weeks at 7 days per week = (4 x 7) = 28 days

28/-14 = - 2....so the average change is -2 per day

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3 years ago

For sin2x+cosx=0, use a double-angle or half-angle formula to simplify the equation and then find all solutions of the equation

Archy [21]

Answer:

Step-by-step explanation:

Given is a trignometric equation in x, as

$sin2x+cosx=0$

TO make it in one trig ratio, we can replace sin2x as 2sinx cosx

WE get now

$2sinxcosx+cosx=0\\$

$cosx(2sinx+1)=0\\cosx=0, sinx =-0.5\\$

Principal solution is $x=\frac{\pi}{2} , \frac{-\pi}{6}$

x = ±π/2 + 2kπ, where k is any integer or

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General solution is

4 0

2 years ago

The pool at "splash around" is open for 14 weeks during the summer. you can swim for $6 a session, or you can buy a membership f

Ratling [72]

Let

x--------> the number of sessions

y-------> the total payment

we know that

without membership:

$y=6x$ --------> equation $1$

with membership:

$y=100+4x$ --------> equation $2$

using a graph tool------> resolve the system of equations

see the attached figure

the solution is the point $(50,300)$

that means

For $x=50\ sessions$

the cost is $\$300$ in both forms

to justify buying the membership

$x > 50\ sessions$

therefore

<u>the answer is</u>

$x > 50\ sessions$

3 0

3 years ago

Read 2 more answers

Brett works at a local pet store. When he works 5 hours he earns $25. When he works 10 hours he earns $50. What is the rate per

vampirchik [111]

Answer:

$5 per hour

Step-by-step explanation:

25/5 = 5

10*5 = 50

8 0

3 years ago