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Snezhnost [94]
3 years ago
5

Pleaseeeee help me with this!zn

Mathematics
1 answer:
BigorU [14]3 years ago
8 0
The answer is 1, the first option
You might be interested in
The prices of two ratios are in the ratio x:y
Archy [21]

Answer:

4:1

Step-by-step explanation:

x+20 : y+20 = 5 : 2

(x+20)/(y+20) = 5/2

2(x+20) = 5(y+20)

2x+40 = 5y+100

2x = 5y+60 (1)

x-5 : y-5 = 5:1

(x-5)/(y-5) = 5/1

x-5 = 5(y-5)

x-5 = 5y-25

x = 5y-20 (2)

Solve (1) & (2) simultaneously,

2(5y-20) = 5y+60

10y-40 = 5y+60

5y = 100

y = 20

x = 5y-20

x = 5(20)-20 = 100-20

x = 80

x:y

80:20

4:1

8 0
3 years ago
Read 2 more answers
I need help please I will mark you brainlists
V125BC [204]

Answer:

2. ΔABC is isosceles

Step-by-step explanation:

Given : m∠A = 50

m∠BCD = 180 - (m∠BDC + m∠DBC)

              = 180 - (100 + 30)

              = 50

then

m∠A = m∠BCD

therefore ΔABC is isosceles

6 0
3 years ago
Please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!!
Mila [183]
The answer is 51 because 180-139=51
3 0
3 years ago
Which triangles are similar?
Helga [31]
I believe the answer is B
8 0
2 years ago
John Street Barber Shop pays $25 per month for water for the first 8,000 gallons and $3.50 per thousand gallons above 8,000. Cal
Blizzard [7]
For this case, the first thing to do is find the equation of the line in order to model the problem mathematically.
 Using Excel (see attached image) we find that the equation of the line is:
 y = 0.0035x - 3

 We evaluate for:

 For x = 7000:
 y = 0.0035 * (7000) - 3
 y = 21.5 $

 For x = 10000
 y = 0.0035 * (10000) - 3
 y = 32 $

 For x = 13000
 y = 0.0035 * (13000) - 3
 y = 42.5 $

 Answer:
 The total water cost when the barber shop uses 7,000 gallons, 10,000 gallons, and 13,000 gallons is:
 21.5 $, 32 $, 42.5 $, respectively.

6 0
3 years ago
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