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Nady [450]
2 years ago
13

PLEASE HELP BEST ANSWER GETS BRAINLIEST URGENT

Mathematics
1 answer:
dybincka [34]2 years ago
3 0

Answer:

x

--    = y

25

Step-by-step explanation:

Because it is 25% off, x is divided by 25 to get the price.

For example if x was 100, divide it by 25 you get 75, which is y.

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B) Write an expression for fin terms of d.<br> c) Work out e-f<br> Simplify your answer.
olga2289 [7]

Answer:

3d+ e+f

Step-by-step explanation:

7 0
3 years ago
What is the sign of f on the interval -2
TEA [102]

Answer:

f is sometimes positive and sometimes negative.

Step-by-step explanation:

f(x)=(x-3)(x+2)(x+4)(x+4)(x-1)(2x-9)

Take x=-1\in(-2,\frac{9}{2})\ as-2

f(-1)=(-1-3)(-1+2)(-1+4)(-1-1)(-2-9)\\\\=(-4)(1)(3)(-2)(-11)\\\\=-264\\\\f(-1)

Take x=2\in(-2,\frac{9}{2})\ as\ -2

f(2)=(2,-3)(2+2)(2+4)(2-1)(2\times2-9)\\\\=(-1)(4)(6)(1)(-5)\\\\=120\\\\f(2)>0

Hence f(x) for x=-1 and f(x)>0 for x=2

So f is sometimes positive and sometimes negative in the interval.

3 0
3 years ago
A festival charges $3 for child admission and $5 for adult admision. At the end of the festival they have sold 779 tickets for a
lutik1710 [3]

Answer:

562 child tickets were sold

217 adult tickets were sold

Step-by-step explanation:

A festival charges $3 for children admission and $5 for adult admission

At the end of the festival they have sold a total number of 779 tickets for $2771

Let x represent the child ticket

Let y represent the adult ticket

x + y= 779..............equation 1

3x + 5y= 2771..........equation 2

From equation 1

x + y = 779

x= 779 -y

Substitute 779-y for x in equation 2

3x + 5y= 2771

3(779-y) + 5y= 2771

2337 - 3y + 5y= 2771

2337 +2y= 2771

2y= 2771 -2337

2y = 434

y = 434/2

y = 217

Substitute 217 for y in equation 1

x + y= 779

x + 217= 779

x = 779-217

x= 562

Hence 562 child tickets were sold and 217 adult tickets were sold

6 0
3 years ago
Dm de math appareil photo aidee moi svp svpppp
mixer [17]
No idea what language you're talking in, sorry but I only understand English? There is no photo here either.

Please Evaluate?

Thank you.
8 0
3 years ago
Question 1 of 10
Jet001 [13]
The answer should be true
4 0
2 years ago
Read 2 more answers
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