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algol13
3 years ago
9

Stuck, please help and give explanation thank you.

Mathematics
1 answer:
KatRina [158]3 years ago
3 0
The price of Deluxe=D
the price of standard- S

D=S+5
2D+3S=47,5
2*(S+5)+3S=47,5
2S+2*5+3S=47,5
5S+10=47,5
5S=47,5-10
5S=37,5
S=37,5:5
S=7,5 $ the price of standard Chocolates

D=7,5+5=12,5$
D=12,5$

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the calorie cafe is known for their hotdogs and burgers. the number of calories in a burger is 220 more than the number of calor
meriva

Answer:

  • Number of calories in burger = 620 calories
  • Number of calories in hotdog = 400 calories

Step-by-step explanation:

Number of calories in burger = x

Number of calories in hotdog = y

y = x - 220

x + 2y = 1,420

Substitution:

x + 2 * (x - 220) = 1,420

x + 2x - 440 = 1,420

3x = 1,420 + 440

x = 1,860 / 3

x = 620 calories

y = x - 220

= 620 - 220

= 400 calories

6 0
2 years ago
The school auditorium has 22 rows with 28 seats and 19 seats are empty. How many seats are filled?
zhuklara [117]
597.
22•28=616-19=597
6 0
3 years ago
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Sever21 [200]
-2? it’s been awhile sorry if it’s wrong
4 0
2 years ago
Solve /x-5/=3<br> A. x=2, x=8<br> B. x=-8, x=8<br> C. x=-2, x=2<br> D. x=-8, x=-2
zhenek [66]

Answer:

A) x=2, 8

Step-by-step explanation:

abs(x-5)=3

x-5=3, x-5=-3

x=3+5=8,

x=-3+5=2

5 0
3 years ago
Find the value of x.
hichkok12 [17]
<h3>Angles sum up to:</h3><h3>( n - 2 ) × 180 = ( 5 - 2 ) × 180 = 3 × 180 = 540</h3>

x + 4x + 4x + 135 + 135 = 540

9x + 270 = 540

9x = 540 - 270 \\ 9x = 270

x =  \frac{270}{9}  = 30

8 0
1 year ago
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