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shusha [124]
2 years ago
8

a shop owner offered a 25% discount off the regular price of a picture frame the amount of the discount is 4$ what is the regula

r price of the picture frame
Mathematics
1 answer:
guajiro [1.7K]2 years ago
5 0

Hello and welcome to Brainly! I'm Gabriella and I'm a part of the Engagement team on Brainly. Thank you for posting your first question! I hope you enjoy your time here on Brainly! If you have any questions about navigating and understanding the Brainly website, don't hesitate to reach out to me or anyone else on the Engagement team!

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9000 dollars is placed in an account with an annual interest rate of 7.75%. How much will be in the account after 18 years, to t
NNADVOKAT [17]

In one year, $ 9,000 with a profit of 7.75%, is $ 697.5

697.5 × 18 = 12555

After 18 years old, it is $ 15,222

7 0
3 years ago
Read 2 more answers
Find the slope of the line.
ElenaW [278]

Answer:

-\frac{5}{4}

Step-by-step explanation:

m=\frac{rise}{run}=\frac{-4-1}{1+3}=\frac{-5}{4} =-\frac{5}{4}

Hope this helps.

5 0
2 years ago
3(-3a-1) what is the answer if you answer it correct you get 10 points​
Mandarinka [93]

Answer: the best answer is 3(-3a-1)

Step-by-step explanation:

7 0
3 years ago
Josh is a software salesperson. His base salary is 2200$ and he makes 70$ more for everycopy of history is fun he sells. What is
natta225 [31]

Answer: \$3,740

Step-by-step explanation:

You know that Josh's base salary is:

base\ salary=\$2,200

And, according to the information given in the exercise, Josh makes $70 more for every copy he sales.

 Knowing this you can determine that his total pay will be the sum of his base salary and the podruct of $70 and the number of copies.

Therefore, if Josh sells 22 copies, then we get that his total pay is:

Total\ pay=\$2,200+(22)(\$70)\\\\Total\ pay=\$3,740

6 0
3 years ago
Which of the following functions are solutions of the differential equation y" + y = 7 sin(x)? (Select all that apply.)
Nikitich [7]

The homogeneous equation

y'' + y = 0

has characteristic equation

r² + 1 = 0

with roots at r = ± √(-1) = ± i, and so the characteristic solution is

y = C₁ cos(x) + C₂ sin(x)

Using the method of undetermined coefficients, suppose

y = a x cos(x) + b x sin(x)

(we would normally consider y = a cos(x) + b sin(x), but cos(x) and sin(x) are already part of the characteristic solution)

The derivatives are

y' = a cos(x) - a x sin(x) + b sin(x) + b x cos(x)

y' = (b - a x) sin(x) + (a + b x) cos(x)

and

y'' = -a sin(x) + (b - a x) cos(x) + b cos(x) - (a + b x) sin(x)

y'' = (-2a - b x) sin(x) + (2b - a x) cos(x)

Then

y'' + y = (-2a - b x) sin(x) + (2b - a x) cos(x) + a x cos(x) + b x sin(x)

7 sin(x) = -2a sin(x) + 2b cos(x)

and it follows that a = -7/2 and b = 0.

So, the general solution to the DE is

y = C₁ cos(x) + C₂ sin(x) - 7/2 x cos(x)

which means the only valid solutions from the given choices are

y = 7 sin(x)

y = 7 cos(x)

4 0
2 years ago
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